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mpi_mod.f90 @ 8ed5f11

10.4.1_peseiGFS_025bugfixes+enhancementsdevrelease-10release-10.4.1scaling-bugunivie

Last change on this file since 8ed5f11 was 8ed5f11, checked in by Espen Sollum ATMOS <eso@…>, 8 years ago
Minor cosmetic changes
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1	!**********************************************************************
2	! Copyright 1998,1999,2000,2001,2002,2005,2007,2008,2009,2010 *
3	! Andreas Stohl, Petra Seibert, A. Frank, Gerhard Wotawa, *
4	! Caroline Forster, Sabine Eckhardt, John Burkhart, Harald Sodemann *
5	! *
6	! This file is part of FLEXPART. *
7	! *
8	! FLEXPART is free software: you can redistribute it and/or modify *
9	! it under the terms of the GNU General Public License as published by*
10	! the Free Software Foundation, either version 3 of the License, or *
11	! (at your option) any later version. *
12	! *
13	! FLEXPART is distributed in the hope that it will be useful, *
14	! but WITHOUT ANY WARRANTY; without even the implied warranty of *
15	! MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
16	! GNU General Public License for more details. *
17	! *
18	! You should have received a copy of the GNU General Public License *
19	! along with FLEXPART. If not, see <http://www.gnu.org/licenses/>. *
20	!**********************************************************************
21
22	module mpi_mod
23
24	!*****************************************************************************
25	! *
26	! DESCRIPTION *
27	! This module contains subroutines and common variables used for the *
28	! MPI parallelization of FLEXPART. *
29	! *
30	! NOTE *
31	! Depending on the MPI library installed on your system (e.g. mpich2, *
32	! OpenMPI) you may need to choose below in this file between *
33	! use mpi *
34	! (if the MPI library comes with the file 'mpi.mod'); or *
35	! include 'mpif.h' *
36	! *
37	! *
38	!*****************************************************************************
39	! *
40	! Variables: *
41	! *
42	! mp_ierr MPI error code *
43	! mp_np Number of MPI processes *
44	! mp_pid Process ID of each MPI process *
45	! mp_seed Parameter for random number seed *
46	! read_grp_min Minimum number of processes at which one will be *
47	! used as reader *
48	! numpart_mpi, Number of particles per node *
49	! maxpart_mpi *
50	! mp_partid MPI process ID for particle calculation *
51	! mp_partgroup_ Refers to the subset of processors performing *
52	! loops over particles. Will be all processes *
53	! unless a dedicated process runs getfields/readwind *
54	! lmp_sync If .false., use asynchronous MPI *
55	! mp_cp Real precision to use for deposition fields *
56	! *
57	! *
58	! *
59	! *
60	!*****************************************************************************
61
62	use mpi
63	use par_mod, only: dp,sp
64	use com_mod, only: lroot
65
66	implicit none
67
68	! include 'mpif.h'
69
70	public
71
72	! Set aside a process for reading windfields if using at least these many processes
73	!==================================================
74	integer, parameter, private :: read_grp_min=4
75	!==================================================
76
77	! Variables for each MPI process in the world group
78	integer :: mp_ierr, mp_np, mp_pid, mp_partid
79	integer, private :: world_group_id
80
81	! Variables for MPI processes in the 'particle' group
82	integer, allocatable, dimension(:) :: mp_partgroup_rank
83	integer :: mp_partgroup_comm, mp_partgroup_pid, mp_partgroup_np
84
85	integer :: mp_seed=0
86	integer, parameter :: mp_sp=MPI_REAL4, mp_dp=MPI_REAL8
87	integer :: mp_cp
88	integer, parameter :: id_root=0 ! master process
89
90	! MPI tags/requests for send/receive operation
91	integer :: tm1
92	integer, parameter :: nvar_async=26 !27 !29 :DBG:
93	!integer, dimension(:), allocatable :: tags
94	integer, dimension(:), allocatable :: reqs
95
96
97	integer :: id_read ! readwind/getfield process
98	integer :: numpart_mpi,maxpart_mpi ! number of particles per node
99	integer :: tot_numpart=0
100	integer :: mp_comm_used ! global or subgroup communicator
101
102	logical :: lmpreader=.false. ! is set to true for reading process(es) only.
103	logical :: lmp_use_reader=.false. ! true if separate readwind process is used
104
105	! true if only using synchronous MPI send/recv:
106	! If setting this to .false., numwfmem must be set to 3
107	!===============================================================================
108	logical :: lmp_sync=.true.
109	!===============================================================================
110
111	! mp_dbg_mode Used for debugging MPI.
112	! mp_dev_mode various checks related to debugging the parallel code
113	! mp_dbg_out write some arrays to data file for debugging
114	! mp_measure_time Measure cpu/wall time, write out at end of run
115	! mp_time_barrier Measure MPI barrier time
116	! mp_exact_numpart Use an extra MPI communication to give the exact number of particles
117	! to standard output (this does not otherwise affect the simulation)
118	logical, parameter :: mp_dbg_mode = .false.
119	logical, parameter :: mp_dev_mode = .false.
120	logical, parameter :: mp_dbg_out = .false.
121	logical, parameter :: mp_time_barrier=.true.
122	logical, parameter :: mp_measure_time=.true.
123	logical, parameter :: mp_exact_numpart=.true.
124
125	! for measuring CPU/Wall time
126	real(sp),private :: mp_comm_time_beg, mp_comm_time_end, mp_comm_time_total=0.
127	real(dp),private :: mp_comm_wtime_beg, mp_comm_wtime_end, mp_comm_wtime_total=0.
128	real(sp),private :: mp_root_time_beg, mp_root_time_end, mp_root_time_total=0.
129	real(dp),private :: mp_root_wtime_beg, mp_root_wtime_end, mp_root_wtime_total=0.
130	real(sp),private :: mp_barrier_time_beg, mp_barrier_time_end, mp_barrier_time_total=0.
131	real(dp),private :: mp_barrier_wtime_beg, mp_barrier_wtime_end, mp_barrier_wtime_total=0.
132	real(sp),private :: tm_nploop_beg, tm_nploop_end, tm_nploop_total=0.
133	real(sp),private :: tm_tot_beg, tm_tot_end, tm_tot_total=0.
134	real(dp),private :: mp_getfields_wtime_beg, mp_getfields_wtime_end, mp_getfields_wtime_total=0.
135	real(sp),private :: mp_getfields_time_beg, mp_getfields_time_end, mp_getfields_time_total=0.
136	real(dp),private :: mp_readwind_wtime_beg, mp_readwind_wtime_end, mp_readwind_wtime_total=0.
137	real(sp),private :: mp_readwind_time_beg, mp_readwind_time_end, mp_readwind_time_total=0.
138	real(dp),private :: mp_io_wtime_beg, mp_io_wtime_end, mp_io_wtime_total=0.
139	real(sp),private :: mp_io_time_beg, mp_io_time_end, mp_io_time_total=0.
140	real(dp),private :: mp_wetdepo_wtime_beg, mp_wetdepo_wtime_end, mp_wetdepo_wtime_total=0.
141	real(sp),private :: mp_wetdepo_time_beg, mp_wetdepo_time_end, mp_wetdepo_time_total=0.
142	real(dp),private :: mp_advance_wtime_beg, mp_advance_wtime_end, mp_advance_wtime_total=0.
143	real(dp),private :: mp_conccalc_time_beg, mp_conccalc_time_end, mp_conccalc_time_total=0.
144	real(dp),private :: mp_total_wtime_beg, mp_total_wtime_end, mp_total_wtime_total=0.
145	real(dp),private :: mp_vt_wtime_beg, mp_vt_wtime_end, mp_vt_wtime_total
146	real(sp),private :: mp_vt_time_beg, mp_vt_time_end, mp_vt_time_total
147
148	! dat_lun logical unit number for i/o
149	integer, private :: dat_lun
150
151	contains
152
153	subroutine mpif_init
154	!***********************************************************************
155	! DESCRIPTION
156	! Initialize MPI.
157	!
158	! Create the global communicator MPI_COMM_WORLD
159	! If using a separate MPI process for getfields/readwind, a subgroup
160	! is created for the other processes.
161	!
162	! VARIABLES
163	! mpi_mode default 0, set to 2/3 if running MPI version
164	! mp_np number of running processes, decided at run-time
165	!***********************************************************************
166	use par_mod, only: maxpart, numwfmem, dep_prec
167	use com_mod, only: mpi_mode
168
169	implicit none
170
171	integer :: i,j,s,addmaxpart=0
172
173	! Each process gets an ID (mp_pid) in the range 0,..,mp_np-1
174	call MPI_INIT(mp_ierr)
175	if (mp_ierr /= 0) goto 100
176	call MPI_COMM_RANK(MPI_COMM_WORLD, mp_pid, mp_ierr)
177	if (mp_ierr /= 0) goto 100
178	call MPI_COMM_SIZE(MPI_COMM_WORLD, mp_np, mp_ierr)
179	if (mp_ierr /= 0) goto 100
180
181
182	! Variable mpi_mode is used to handle subroutines common to parallel/serial version
183	if (lmp_sync) then
184	mpi_mode=2 ! hold 2 windfields in memory
185	else
186	mpi_mode=3 ! hold 3 windfields in memory
187	end if
188
189	if (mp_pid.ne.0) then
190	lroot = .false.
191	end if
192
193	! Set MPI precision to use for transferring deposition fields
194	!************************************************************
195	if (dep_prec==dp) then
196	mp_cp = MPI_REAL8
197	! TODO: write info message for serial version as well
198	if (lroot.and.verbosity>0) write(,) 'Using double precision for deposition fields'
199	else if (dep_prec==sp) then
200	mp_cp = MPI_REAL4
201	if (lroot.and.verbosity>0) write(,) 'Using single precision for deposition fields'
202	else
203	write(,) 'ERROR: something went wrong setting MPI real precision'
204	stop
205	end if
206
207	! Check for sensible combination of parameters
208	!*********************************************
209
210	if (.not.lmp_sync.and.numwfmem.ne.3.and.lroot) then
211	write(*,FMT='(80("#"))')
212	write(,) '#### mpi_mod::mpif_init> ERROR: ', &
213	& 'numwfmem must be set to 3 for asyncronous reading ####'
214	write(*,FMT='(80("#"))')
215	stop
216	else if (lmp_sync.and.numwfmem.ne.2.and.lroot) then
217	write(*,FMT='(80("#"))')
218	write(,) '#### mpi_mod::mpif_init> WARNING: ', &
219	& 'numwfmem should be set to 2 for syncronous'
220	write(,) ' reading. Results will still be valid, but unneccesary '
221	write(,) 'amount of memory is being allocated.'
222	write(*,FMT='(80("#"))')
223	! Force "syncronized" version if all processes will call getfields
224	else if ((.not.lmp_sync.and.mp_np.lt.read_grp_min).or.(mp_np.eq.1)) then
225	if (lroot) then
226	write(*,FMT='(80("#"))')
227	write(,) '#### mpi_mod::mpif_init> WARNING: ', &
228	& 'all procs call getfields. Setting lmp_sync=.true.'
229	write(*,FMT='(80("#"))')
230	end if
231	lmp_sync=.true. ! :DBG: eso fix this...
232	end if
233
234	! TODO: Add more warnings for unimplemented flexpart features
235
236	! Set ID of process that calls getfield/readwind.
237	! Using the last process in the group ensures statistical identical results
238	! as running with one process less but not using separate read process
239	!**********************************************************************
240
241	! id_read = min(mp_np-1, 1)
242	id_read = mp_np-1
243
244	if (mp_pid.eq.id_read) lmpreader=.true.
245
246	call MPI_Comm_group (MPI_COMM_WORLD, world_group_id, mp_ierr)
247
248	! Create a MPI group/communicator that will calculate trajectories.
249	! Skip this step if program is run with only a few processes
250	!************************************************************************
251	allocate(mp_partgroup_rank(0:mp_np-2))
252
253	! This allows checking for allocation of arrays when no subgroup is used
254	mp_partgroup_pid=0
255
256	if (read_grp_min.lt.2) then
257	write(,) '#### mpi_mod::mpif_init> ERROR ####', &
258	& 'read_grp_min should be at least 2. Exiting'
259	stop
260	end if
261
262	if (mp_np.ge.read_grp_min) then
263	lmp_use_reader = .true.
264
265	! Map the subgroup IDs= 0,1,2,...,mp_np-2, skipping reader process
266	j=-1
267	do i=0, mp_np-2 !loop over all (subgroup) IDs
268	j=j+1
269	if (i.eq.id_read) then
270	j=j+1
271	end if
272	mp_partgroup_rank(i) = j
273	end do
274
275	call MPI_Group_incl (world_group_id, mp_np-1, mp_partgroup_rank, &
276	&mp_partgroup_pid, mp_ierr)
277	if (mp_ierr /= 0) goto 100
278	call MPI_Comm_create (MPI_COMM_WORLD, mp_partgroup_pid, mp_partgroup_comm, mp_ierr)
279	if (mp_ierr /= 0) goto 100
280
281	if (mp_pid.ne.id_read) then
282	call MPI_Comm_rank (mp_partgroup_comm, mp_partgroup_pid, mp_ierr)
283	if (mp_ierr /= 0) goto 100
284
285	! Get size of new group (=mp_np-1)
286	call MPI_COMM_SIZE(mp_partgroup_comm, mp_partgroup_np, mp_ierr)
287	if (mp_ierr /= 0) goto 100
288	if (mp_partgroup_np.ne.mp_np-1) then
289	write(,) '#### mpi_mod:: mpif_init> ERROR ####&
290	& mp_partgroup_np.ne.mp_np-1'
291	stop
292	endif
293
294	else
295	mp_partgroup_pid = -1
296	end if
297	end if
298
299	if (lmp_use_reader) then
300	mp_comm_used = mp_partgroup_comm
301	mp_partid = mp_partgroup_pid
302	mp_partgroup_np=mp_np-1
303	else
304	mp_comm_used = MPI_COMM_WORLD
305	mp_partgroup_np = mp_np
306	mp_partid = mp_pid
307	end if
308
309	! Set maxpart per process
310	if (mp_partid.lt.mod(maxpart,mp_partgroup_np)) addmaxpart=1
311	maxpart_mpi=int(maxpart/mp_partgroup_np)+addmaxpart
312
313	! Do not allocate particle data arrays for readwind process
314	if (lmpreader.and.lmp_use_reader) then
315	maxpart_mpi=0
316	end if
317
318	! Set random seed for each non-root process
319	if (mp_pid.gt.0) then
320	! if (mp_pid.ge.0) then
321	! call system_clock(s)
322	s = 244
323	mp_seed = -abs(mod((s181)((mp_pid-83)*359), 104729))
324	end if
325	if (mp_dev_mode) write(,) 'PID, mp_seed: ',mp_pid, mp_seed
326	if (mp_dbg_mode) then
327	! :DBG: For debugging, set all seed to 0 and maxrand to e.g. 20
328	mp_seed=0
329	if (lroot) write(,) 'MPI: setting seed=0'
330	end if
331
332	! Allocate request array for asynchronous MPI
333	if (.not.lmp_sync) then
334	allocate(reqs(0:nvar_async*mp_np-1))
335	reqs(:)=MPI_REQUEST_NULL
336	else
337	allocate(reqs(0:1))
338	reqs(:)=MPI_REQUEST_NULL
339	end if
340
341	goto 101
342
343	100 write(,) '#### mpi_mod::mpif_init> ERROR ####', mp_ierr
344	stop
345
346	101 end subroutine mpif_init
347
348
349	subroutine mpif_mpi_barrier
350	!***********************************************************************
351	! Set MPI barrier (all processes are synchronized here), with the
352	! possible exception of a separate 'readwind' process.
353	! Optionally measure cpu/wall time.
354	!
355	!***********************************************************************
356	implicit none
357
358	if (mp_time_barrier) then
359	call cpu_time(mp_barrier_time_beg)
360	mp_barrier_wtime_beg = mpi_wtime()
361	endif
362
363	call MPI_BARRIER(mp_comm_used, mp_ierr)
364	if (mp_ierr /= 0) goto 100
365
366	if (mp_time_barrier) then
367	call cpu_time(mp_barrier_time_end)
368	mp_barrier_wtime_end = mpi_wtime()
369
370	mp_barrier_time_total=mp_barrier_time_total+&
371	&(mp_barrier_time_end-mp_barrier_time_beg)
372	mp_barrier_wtime_total=mp_barrier_wtime_total+&
373	&(mp_barrier_wtime_end-mp_barrier_wtime_beg)
374	end if
375
376	goto 101
377
378	100 write(,) '#### mpi_mod::mpif_mpi_barrier> ERROR ####', mp_ierr
379	stop
380
381	101 end subroutine mpif_mpi_barrier
382
383
384	subroutine mpif_com_mod_allocate
385	!*******************************************************************************
386	! Dynamic allocation of arrays (in serial code these have size maxpart)
387	!
388	!*******************************************************************************
389	use com_mod
390
391	implicit none
392
393	integer :: array_size
394
395	array_size = maxpart_mpi
396
397	allocate(itra1(array_size),npoint(array_size),&
398	& nclass(array_size),idt(array_size),&
399	& itramem(array_size),itrasplit(array_size),&
400	& xtra1(array_size),ytra1(array_size),&
401	& ztra1(array_size),xmass1(array_size, maxspec))
402
403	allocate(uap(array_size),ucp(array_size),&
404	& uzp(array_size),us(array_size),&
405	& vs(array_size),&
406	& ws(array_size),cbt(array_size))
407
408
409	end subroutine mpif_com_mod_allocate
410
411
412	subroutine mpif_tm_send_dims
413	!***********************************************************************
414	! Distribute array dimensions from pid0 to all processes.
415	! numpart_mpi/numpart is sent to allow dynamic allocation
416	!
417	! Currently not in use.
418	!
419	! Variables of similar type (integer, real) are placed in an array
420	! and sent collectively, to avoid the overhead associated with individual
421	! MPI send/receives
422	!
423	!
424	!***********************************************************************
425	use com_mod
426
427	implicit none
428
429	integer :: add_part=0
430
431	call MPI_Bcast(numpart, 1, MPI_INTEGER, id_root, mp_comm_used, mp_ierr)
432
433	! MPI subgroup does the particle-loop
434	if (lmp_use_reader) then
435	if (mod(numpart,mp_partgroup_np).ne.0) add_part=1
436	numpart_mpi=int(numpart/mp_partgroup_np)+add_part
437	else
438	if (mod(numpart,mp_np).ne.0) add_part=1
439	numpart_mpi=int(numpart/mp_np)+add_part
440	end if
441
442
443	! redefine numpart as 'numpart per process' throughout the code
444	!**************************************************************
445	numpart = numpart_mpi
446
447	end subroutine mpif_tm_send_dims
448
449
450	subroutine mpif_tm_send_vars
451	!***********************************************************************
452	! Distribute particle variables from pid0 to all processes.
453	! Called from timemanager
454	! NOT IN USE at the moment, but can be useful for debugging
455	!
456	!***********************************************************************
457	use com_mod
458
459	implicit none
460
461	integer :: i
462
463	! Time for MPI communications
464	!****************************
465	if (mp_measure_time) call mpif_mtime('commtime',0)
466
467	! Distribute variables, send from pid 0 to other processes
468	!**********************************************************************
469
470	! integers
471	if (lroot) then
472	call MPI_SCATTER(npoint,numpart_mpi,MPI_INTEGER,MPI_IN_PLACE,&
473	&numpart_mpi,MPI_INTEGER,id_root,mp_comm_used,mp_ierr)
474	if (mp_ierr /= 0) goto 600
475	call MPI_SCATTER(idt,numpart_mpi,MPI_INTEGER,MPI_IN_PLACE,&
476	&numpart_mpi,MPI_INTEGER,id_root,mp_comm_used,mp_ierr)
477	if (mp_ierr /= 0) goto 600
478	call MPI_SCATTER(itra1,numpart_mpi,MPI_INTEGER,MPI_IN_PLACE,&
479	&numpart_mpi,MPI_INTEGER,id_root,mp_comm_used,mp_ierr)
480	if (mp_ierr /= 0) goto 600
481	call MPI_SCATTER(nclass,numpart_mpi,MPI_INTEGER,MPI_IN_PLACE,&
482	&numpart_mpi,MPI_INTEGER,id_root,mp_comm_used,mp_ierr)
483	if (mp_ierr /= 0) goto 600
484	call MPI_SCATTER(itramem,numpart_mpi,MPI_INTEGER,MPI_IN_PLACE,&
485	&numpart_mpi,MPI_INTEGER,id_root,mp_comm_used,mp_ierr)
486	if (mp_ierr /= 0) goto 600
487
488	! int2
489	call MPI_SCATTER(cbt,numpart_mpi,MPI_INTEGER2,MPI_IN_PLACE,&
490	&numpart_mpi,MPI_INTEGER2,id_root,mp_comm_used,mp_ierr)
491	if (mp_ierr /= 0) goto 600
492
493	! real
494	call MPI_SCATTER(uap,numpart_mpi,mp_sp,MPI_IN_PLACE,&
495	&numpart_mpi,mp_sp,id_root,mp_comm_used,mp_ierr)
496	if (mp_ierr /= 0) goto 600
497	call MPI_SCATTER(ucp,numpart_mpi,mp_sp,MPI_IN_PLACE,&
498	&numpart_mpi,mp_sp,id_root,mp_comm_used,mp_ierr)
499	if (mp_ierr /= 0) goto 600
500	call MPI_SCATTER(uzp,numpart_mpi,mp_sp,MPI_IN_PLACE,&
501	&numpart_mpi,mp_sp,id_root,mp_comm_used,mp_ierr)
502	if (mp_ierr /= 0) goto 600
503
504	call MPI_SCATTER(us,numpart_mpi,mp_sp,MPI_IN_PLACE,&
505	&numpart_mpi,mp_sp,id_root,mp_comm_used,mp_ierr)
506	if (mp_ierr /= 0) goto 600
507	call MPI_SCATTER(vs,numpart_mpi,mp_sp,MPI_IN_PLACE,&
508	&numpart_mpi,mp_sp,id_root,mp_comm_used,mp_ierr)
509	if (mp_ierr /= 0) goto 600
510	call MPI_SCATTER(ws,numpart_mpi,mp_sp,MPI_IN_PLACE,&
511	&numpart_mpi,mp_sp,id_root,mp_comm_used,mp_ierr)
512	if (mp_ierr /= 0) goto 600
513
514	call MPI_SCATTER(xtra1,numpart_mpi,mp_dp,MPI_IN_PLACE,&
515	&numpart_mpi,mp_dp,id_root,mp_comm_used,mp_ierr)
516	if (mp_ierr /= 0) goto 600
517	call MPI_SCATTER(ytra1,numpart_mpi,mp_dp,MPI_IN_PLACE,&
518	&numpart_mpi,mp_dp,id_root,mp_comm_used,mp_ierr)
519	if (mp_ierr /= 0) goto 600
520	call MPI_SCATTER(ztra1,numpart_mpi,mp_sp,MPI_IN_PLACE,&
521	&numpart_mpi,mp_sp,id_root,mp_comm_used,mp_ierr)
522	if (mp_ierr /= 0) goto 600
523
524	do i=1,nspec
525	call MPI_SCATTER(xmass1(:,i),numpart_mpi,mp_sp,MPI_IN_PLACE,&
526	&numpart_mpi,mp_sp,id_root,mp_comm_used,mp_ierr)
527	if (mp_ierr /= 0) goto 600
528	end do
529
530	else ! (mp_pid >= 1)
531	! integers
532	call MPI_SCATTER(npoint,numpart_mpi,MPI_INTEGER,npoint,&
533	&numpart_mpi,MPI_INTEGER,id_root,mp_comm_used,mp_ierr)
534	if (mp_ierr /= 0) goto 600
535	call MPI_SCATTER(idt,numpart_mpi,MPI_INTEGER,idt,&
536	&numpart_mpi,MPI_INTEGER,id_root,mp_comm_used,mp_ierr)
537	if (mp_ierr /= 0) goto 600
538	call MPI_SCATTER(itra1,numpart_mpi,MPI_INTEGER,itra1,&
539	&numpart_mpi,MPI_INTEGER,id_root,mp_comm_used,mp_ierr)
540	if (mp_ierr /= 0) goto 600
541	call MPI_SCATTER(nclass,numpart_mpi,MPI_INTEGER,nclass,&
542	&numpart_mpi,MPI_INTEGER,id_root,mp_comm_used,mp_ierr)
543	if (mp_ierr /= 0) goto 600
544	call MPI_SCATTER(itramem,numpart_mpi,MPI_INTEGER,itramem,&
545	&numpart_mpi,MPI_INTEGER,id_root,mp_comm_used,mp_ierr)
546	if (mp_ierr /= 0) goto 600
547
548	! int2
549	call MPI_SCATTER(cbt,numpart_mpi,MPI_INTEGER2,cbt,&
550	&numpart_mpi,MPI_INTEGER2,id_root,mp_comm_used,mp_ierr)
551	if (mp_ierr /= 0) goto 600
552
553	! reals
554	call MPI_SCATTER(uap,numpart_mpi,mp_sp,uap,&
555	&numpart_mpi,mp_sp,id_root,mp_comm_used,mp_ierr)
556	if (mp_ierr /= 0) goto 600
557	call MPI_SCATTER(ucp,numpart_mpi,mp_sp,ucp,&
558	&numpart_mpi,mp_sp,id_root,mp_comm_used,mp_ierr)
559	if (mp_ierr /= 0) goto 600
560	call MPI_SCATTER(uzp,numpart_mpi,mp_sp,uzp,&
561	&numpart_mpi,mp_sp,id_root,mp_comm_used,mp_ierr)
562	if (mp_ierr /= 0) goto 600
563
564	call MPI_SCATTER(us,numpart_mpi,mp_sp,us,&
565	&numpart_mpi,mp_sp,id_root,mp_comm_used,mp_ierr)
566	if (mp_ierr /= 0) goto 600
567	call MPI_SCATTER(vs,numpart_mpi,mp_sp,vs,&
568	&numpart_mpi,mp_sp,id_root,mp_comm_used,mp_ierr)
569	if (mp_ierr /= 0) goto 600
570	call MPI_SCATTER(ws,numpart_mpi,mp_sp,ws,&
571	&numpart_mpi,mp_sp,id_root,mp_comm_used,mp_ierr)
572	if (mp_ierr /= 0) goto 600
573
574	call MPI_SCATTER(xtra1,numpart_mpi,mp_dp,xtra1,&
575	&numpart_mpi,mp_dp,id_root,mp_comm_used,mp_ierr)
576	if (mp_ierr /= 0) goto 600
577	call MPI_SCATTER(ytra1,numpart_mpi,mp_dp,ytra1,&
578	&numpart_mpi,mp_dp,id_root,mp_comm_used,mp_ierr)
579	if (mp_ierr /= 0) goto 600
580	call MPI_SCATTER(ztra1,numpart_mpi,mp_sp,ztra1,&
581	&numpart_mpi,mp_sp,id_root,mp_comm_used,mp_ierr)
582	if (mp_ierr /= 0) goto 600
583
584	do i=1,nspec
585	call MPI_SCATTER(xmass1(:,i),numpart_mpi,mp_sp,xmass1(:,i),&
586	&numpart_mpi,mp_sp,id_root,mp_comm_used,mp_ierr)
587	if (mp_ierr /= 0) goto 600
588	end do
589
590	end if !(lroot)
591
592	if (mp_measure_time) call mpif_mtime('commtime',1)
593
594	goto 601
595
596	600 write(,) "mpi_mod> mp_ierr \= 0", mp_ierr
597	stop
598	601 end subroutine mpif_tm_send_vars
599
600
601	subroutine mpif_tm_collect_vars
602	!*******************************************************************************
603	! Collect particle data to PID 0 from all processes. *
604	! *
605	! This can be called from timemanager_mpi, before caclulating *
606	! concentrations/writing output grids. *
607	! *
608	! Currently not in use, as each process calculates concentrations *
609	! separately, but can be useful for debugging *
610	! *
611	! To use this routine (together with mpif_tm_send_vars) to transfer data *
612	! to the MPI root process (useful for debugging), insert code like this *
613	! (in timemanager_mpi.f90) *
614	! *
615	! if (lroot) tot_numpart=numpart ! root stores total numpart *
616	! call mpif_tm_send_dims *
617	! if (numpart>1) then *
618	! call mpif_tm_send_vars *
619	! end if *
620	! *
621	! To collect data from all processes to root process after a parallel *
622	! region: *
623	! *
624	! if (numpart>0) then *
625	! if (lroot) numpart = tot_numpart *
626	! call mpif_tm_collect_vars *
627	! end if *
628	! *
629	! Then a section that begins with "if (lroot) ..." will behave like *
630	! serial flexpart *
631	! *
632	!*******************************************************************************
633	use com_mod !, only: numpart, nspec, itra1, npoint, nclass
634
635	implicit none
636
637	integer :: i
638
639	logical :: use_mp_vars = .false.! use mp_... type allocated vars
640	logical :: use_in_place = .true.! use MPI_IN_PLACE to collect vars.
641
642
643	! Time for MPI communications
644	if (mp_measure_time) call mpif_mtime('commtime',0)
645
646	! Distribute variables, send from pid 0 to other processes
647	!**********************************************************************
648
649	if (.not. use_mp_vars.and..not.use_in_place) then
650
651	! Integers:
652	call MPI_GATHER(npoint, numpart_mpi, MPI_INTEGER, npoint, &
653	&numpart_mpi, MPI_INTEGER, id_root, mp_comm_used, mp_ierr)
654	if (mp_ierr /= 0) goto 600
655	call MPI_GATHER(idt, numpart_mpi, MPI_INTEGER, idt, &
656	&numpart_mpi, MPI_INTEGER, id_root, mp_comm_used, mp_ierr)
657	if (mp_ierr /= 0) goto 600
658	call MPI_GATHER(itra1, numpart_mpi, MPI_INTEGER, itra1, &
659	&numpart_mpi, MPI_INTEGER, id_root, mp_comm_used, mp_ierr)
660	if (mp_ierr /= 0) goto 600
661	call MPI_GATHER(nclass, numpart_mpi, MPI_INTEGER, nclass, &
662	&numpart_mpi, MPI_INTEGER, id_root, mp_comm_used, mp_ierr)
663	if (mp_ierr /= 0) goto 600
664	call MPI_GATHER(itramem, numpart_mpi, MPI_INTEGER, itramem, &
665	&numpart_mpi, MPI_INTEGER, id_root, mp_comm_used, mp_ierr)
666	if (mp_ierr /= 0) goto 600
667
668	! int2
669	call MPI_GATHER(cbt, numpart_mpi, MPI_INTEGER2, cbt, &
670	&numpart_mpi, MPI_INTEGER2, id_root, mp_comm_used, mp_ierr)
671	if (mp_ierr /= 0) goto 600
672
673	! Reals:
674	call MPI_GATHER(uap, numpart_mpi, mp_sp, uap, &
675	&numpart_mpi, mp_sp, id_root, mp_comm_used, mp_ierr)
676	if (mp_ierr /= 0) goto 600
677	call MPI_GATHER(ucp, numpart_mpi, mp_sp, ucp, &
678	&numpart_mpi, mp_sp, id_root, mp_comm_used, mp_ierr)
679	if (mp_ierr /= 0) goto 600
680	call MPI_GATHER(uzp, numpart_mpi, mp_sp, uzp, &
681	&numpart_mpi, mp_sp, id_root, mp_comm_used, mp_ierr)
682	if (mp_ierr /= 0) goto 600
683
684	call MPI_GATHER(us, numpart_mpi, mp_sp, us, &
685	&numpart_mpi, mp_sp, id_root, mp_comm_used, mp_ierr)
686	if (mp_ierr /= 0) goto 600
687	call MPI_GATHER(vs, numpart_mpi, mp_sp, vs, &
688	&numpart_mpi, mp_sp, id_root, mp_comm_used, mp_ierr)
689	if (mp_ierr /= 0) goto 600
690	call MPI_GATHER(ws, numpart_mpi, mp_sp, ws, &
691	&numpart_mpi, mp_sp, id_root, mp_comm_used, mp_ierr)
692	if (mp_ierr /= 0) goto 600
693
694
695	call MPI_GATHER(xtra1, numpart_mpi, mp_dp, xtra1, &
696	&numpart_mpi, mp_dp, id_root, mp_comm_used, mp_ierr)
697	if (mp_ierr /= 0) goto 600
698	call MPI_GATHER(ytra1, numpart_mpi, mp_dp, ytra1, &
699	&numpart_mpi, mp_dp, id_root, mp_comm_used, mp_ierr)
700	if (mp_ierr /= 0) goto 600
701	call MPI_GATHER(ztra1, numpart_mpi, mp_sp, ztra1, &
702	&numpart_mpi, mp_sp, id_root, mp_comm_used, mp_ierr)
703	if (mp_ierr /= 0) goto 600
704
705	do i=1, nspec
706	call MPI_GATHER(xmass1(:,i), numpart_mpi, mp_sp, xmass1(:,i), &
707	&numpart_mpi, mp_sp, id_root, mp_comm_used, mp_ierr)
708	if (mp_ierr /= 0) goto 600
709
710	end do
711
712	! Use variables npoint etc directly for communications
713	!***********************************************************************
714	else if (use_in_place.and..not.use_mp_vars) then
715	if (lroot) then
716	! Integers:
717	call MPI_GATHER(MPI_IN_PLACE, numpart_mpi, MPI_INTEGER, npoint, &
718	&numpart_mpi, MPI_INTEGER, id_root, mp_comm_used, mp_ierr)
719	if (mp_ierr /= 0) goto 600
720	call MPI_GATHER(MPI_IN_PLACE, numpart_mpi, MPI_INTEGER, idt, &
721	&numpart_mpi, MPI_INTEGER, id_root, mp_comm_used, mp_ierr)
722	if (mp_ierr /= 0) goto 600
723	call MPI_GATHER(MPI_IN_PLACE, numpart_mpi, MPI_INTEGER, itra1, &
724	&numpart_mpi, MPI_INTEGER, id_root, mp_comm_used, mp_ierr)
725	if (mp_ierr /= 0) goto 600
726	call MPI_GATHER(MPI_IN_PLACE, numpart_mpi, MPI_INTEGER, nclass, &
727	&numpart_mpi, MPI_INTEGER, id_root, mp_comm_used, mp_ierr)
728	if (mp_ierr /= 0) goto 600
729	call MPI_GATHER(MPI_IN_PLACE, numpart_mpi, MPI_INTEGER, itramem, &
730	&numpart_mpi, MPI_INTEGER, id_root, mp_comm_used, mp_ierr)
731	if (mp_ierr /= 0) goto 600
732
733	! int2
734	call MPI_GATHER(MPI_IN_PLACE, numpart_mpi, MPI_INTEGER2, cbt, &
735	&numpart_mpi, MPI_INTEGER2, id_root, mp_comm_used, mp_ierr)
736	if (mp_ierr /= 0) goto 600
737
738	! Reals:
739	call MPI_GATHER(MPI_IN_PLACE, numpart_mpi, mp_sp, uap, &
740	&numpart_mpi, mp_sp, id_root, mp_comm_used, mp_ierr)
741	if (mp_ierr /= 0) goto 600
742	call MPI_GATHER(MPI_IN_PLACE, numpart_mpi, mp_sp, ucp, &
743	&numpart_mpi, mp_sp, id_root, mp_comm_used, mp_ierr)
744	if (mp_ierr /= 0) goto 600
745	call MPI_GATHER(MPI_IN_PLACE, numpart_mpi, mp_sp, uzp, &
746	&numpart_mpi, mp_sp, id_root, mp_comm_used, mp_ierr)
747	if (mp_ierr /= 0) goto 600
748
749	call MPI_GATHER(MPI_IN_PLACE, numpart_mpi, mp_sp, us, &
750	&numpart_mpi, mp_sp, id_root, mp_comm_used, mp_ierr)
751	if (mp_ierr /= 0) goto 600
752	call MPI_GATHER(MPI_IN_PLACE, numpart_mpi, mp_sp, vs, &
753	&numpart_mpi, mp_sp, id_root, mp_comm_used, mp_ierr)
754	if (mp_ierr /= 0) goto 600
755	call MPI_GATHER(MPI_IN_PLACE, numpart_mpi, mp_sp, ws, &
756	&numpart_mpi, mp_sp, id_root, mp_comm_used, mp_ierr)
757	if (mp_ierr /= 0) goto 600
758
759
760	call MPI_GATHER(MPI_IN_PLACE, numpart_mpi, mp_dp, xtra1, &
761	&numpart_mpi, mp_dp, id_root, mp_comm_used, mp_ierr)
762	if (mp_ierr /= 0) goto 600
763	call MPI_GATHER(MPI_IN_PLACE, numpart_mpi, mp_dp, ytra1, &
764	&numpart_mpi, mp_dp, id_root, mp_comm_used, mp_ierr)
765	if (mp_ierr /= 0) goto 600
766	call MPI_GATHER(MPI_IN_PLACE, numpart_mpi, mp_sp, ztra1, &
767	&numpart_mpi, mp_sp, id_root, mp_comm_used, mp_ierr)
768	if (mp_ierr /= 0) goto 600
769
770	do i=1, nspec
771	call MPI_GATHER(MPI_IN_PLACE, numpart_mpi, mp_sp, xmass1(:,i), &
772	&numpart_mpi, mp_sp, id_root, mp_comm_used, mp_ierr)
773	if (mp_ierr /= 0) goto 600
774	end do
775
776	else ! (for mp_pid >= 1)
777
778	! Integers:
779	call MPI_GATHER(npoint, numpart_mpi, MPI_INTEGER, npoint, &
780	&numpart_mpi, MPI_INTEGER, id_root, mp_comm_used, mp_ierr)
781	if (mp_ierr /= 0) goto 600
782	call MPI_GATHER(idt, numpart_mpi, MPI_INTEGER, idt, &
783	&numpart_mpi, MPI_INTEGER, id_root, mp_comm_used, mp_ierr)
784	if (mp_ierr /= 0) goto 600
785	call MPI_GATHER(itra1, numpart_mpi, MPI_INTEGER, itra1, &
786	&numpart_mpi, MPI_INTEGER, id_root, mp_comm_used, mp_ierr)
787	if (mp_ierr /= 0) goto 600
788	call MPI_GATHER(nclass, numpart_mpi, MPI_INTEGER, nclass, &
789	&numpart_mpi, MPI_INTEGER, id_root, mp_comm_used, mp_ierr)
790	if (mp_ierr /= 0) goto 600
791	call MPI_GATHER(itramem, numpart_mpi, MPI_INTEGER, itramem, &
792	&numpart_mpi, MPI_INTEGER, id_root, mp_comm_used, mp_ierr)
793	if (mp_ierr /= 0) goto 600
794
795	! int2
796	call MPI_GATHER(cbt, numpart_mpi, MPI_INTEGER2, cbt, &
797	&numpart_mpi, MPI_INTEGER2, id_root, mp_comm_used, mp_ierr)
798	if (mp_ierr /= 0) goto 600
799
800	! Reals:
801	call MPI_GATHER(uap, numpart_mpi, mp_sp, uap, &
802	&numpart_mpi, mp_sp, id_root, mp_comm_used, mp_ierr)
803	if (mp_ierr /= 0) goto 600
804	call MPI_GATHER(ucp, numpart_mpi, mp_sp, ucp, &
805	&numpart_mpi, mp_sp, id_root, mp_comm_used, mp_ierr)
806	if (mp_ierr /= 0) goto 600
807	call MPI_GATHER(uzp, numpart_mpi, mp_sp, uzp, &
808	&numpart_mpi, mp_sp, id_root, mp_comm_used, mp_ierr)
809	if (mp_ierr /= 0) goto 600
810
811	call MPI_GATHER(us, numpart_mpi, mp_sp, us, &
812	&numpart_mpi, mp_sp, id_root, mp_comm_used, mp_ierr)
813	if (mp_ierr /= 0) goto 600
814	call MPI_GATHER(vs, numpart_mpi, mp_sp, vs, &
815	&numpart_mpi, mp_sp, id_root, mp_comm_used, mp_ierr)
816	if (mp_ierr /= 0) goto 600
817	call MPI_GATHER(ws, numpart_mpi, mp_sp, ws, &
818	&numpart_mpi, mp_sp, id_root, mp_comm_used, mp_ierr)
819	if (mp_ierr /= 0) goto 600
820
821
822	call MPI_GATHER(xtra1, numpart_mpi, mp_dp, xtra1, &
823	&numpart_mpi, mp_dp, id_root, mp_comm_used, mp_ierr)
824	if (mp_ierr /= 0) goto 600
825	call MPI_GATHER(ytra1, numpart_mpi, mp_dp, ytra1, &
826	&numpart_mpi, mp_dp, id_root, mp_comm_used, mp_ierr)
827	if (mp_ierr /= 0) goto 600
828	call MPI_GATHER(ztra1, numpart_mpi, mp_sp, ztra1, &
829	&numpart_mpi, mp_sp, id_root, mp_comm_used, mp_ierr)
830	if (mp_ierr /= 0) goto 600
831
832	do i=1, nspec
833	call MPI_GATHER(xmass1(:,i), numpart_mpi, mp_sp, xmass1(:,i), &
834	&numpart_mpi, mp_sp, id_root, mp_comm_used, mp_ierr)
835	if (mp_ierr /= 0) goto 600
836	end do
837	end if ! (lroot)
838	end if ! (use_in_place)
839
840	if (mp_measure_time) call mpif_mtime('commtime',1)
841
842	goto 601
843
844	600 write(,) "mpi_mod> mp_ierr \= 0", mp_ierr
845	stop
846	601 end subroutine mpif_tm_collect_vars
847
848
849	subroutine mpif_gf_send_vars(memstat)
850	!*******************************************************************************
851	! DESCRIPTION
852	! Distribute 'getfield' variables from reader process
853	!
854	! Called from timemanager
855	!
856	! NOTE
857	! This subroutine distributes windfields read from the reader process to
858	! all other processes. Usually one set of fields is transfered, but at
859	! first timestep when there are no fields in memory, both are transfered.
860	! MPI_Bcast is used, so implicitly all processes are synchronized at this
861	! step
862	!
863	!
864	!*******************************************************************************
865	use com_mod
866	use par_mod,only: numwfmem
867
868	implicit none
869
870	integer, intent(in) :: memstat
871
872	! Common array sizes used for communications
873	integer, parameter :: d3_size1 = nxmaxnymaxnzmax
874	integer, parameter :: d3_size2 = nxmaxnymaxnuvzmax
875	integer, parameter :: d2_size1 = nxmax*nymax
876	integer, parameter :: d2_size2 = nxmaxnymaxmaxspec
877	integer, parameter :: d2_size3 = nxmax*nymax
878	integer, parameter :: d1_size1 = maxwf
879
880	integer :: d3s1,d3s2,d2s1,d2s2
881
882	! li,ui lower,upper indices of fields to be transfered (1-3, ui>=li)
883	integer :: li,ui
884
885	! First time routine is called the unchangeable fields will be transfered
886	logical :: first_call=.true.
887
888	!**********************************************************************
889
890	! Sizes of arrays transfered
891	d3s1=d3_size1
892	d3s2=d3_size2
893	d2s1=d2_size1
894	d2s2=d2_size2
895
896	! Decide which field(s) need to be transfered
897	if (memstat.ge.32) then ! distribute 2 fields, to 1st/2nd indices
898	li=1; ui=2
899	d3s1=2*d3_size1
900	d3s2=2*d3_size2
901	d2s1=2*d2_size1
902	d2s2=2*d2_size2
903	else if (memstat.eq.17) then ! distribute 1 field, place on 1st index
904	li=1; ui=1
905	else if (memstat.eq.18) then ! distribute 1 field, place on 2nd index
906	li=2; ui=2
907	else if (memstat.eq.19) then ! distribute 1 field, place on 3nd index
908	li=3; ui=3
909	else
910	write(,) '#### mpi_mod::mpif_gf_send_vars> ERROR: ', &
911	& 'wrong value of memstat, exiting ####', memstat
912	stop
913	end if
914
915
916	! Time for MPI communications
917	if (mp_measure_time) call mpif_mtime('commtime',0)
918
919	! Send variables from getfield process (id_read) to other processes
920	!**********************************************************************
921
922	! The non-reader processes need to know if cloud water were read.
923	call MPI_Bcast(readclouds,1,MPI_LOGICAL,id_read,MPI_COMM_WORLD,mp_ierr)
924	if (mp_ierr /= 0) goto 600
925
926	! Static fields/variables sent only at startup
927	if (first_call) then
928	call MPI_Bcast(oro(:,:),d2_size3,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
929	if (mp_ierr /= 0) goto 600
930	call MPI_Bcast(excessoro(:,:),d2_size3,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
931	if (mp_ierr /= 0) goto 600
932	call MPI_Bcast(lsm(:,:),d2_size3,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
933	if (mp_ierr /= 0) goto 600
934	call MPI_Bcast(xlanduse(:,:,:),d2_size3*numclass,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
935	if (mp_ierr /= 0) goto 600
936	call MPI_Bcast(wftime,d1_size1,MPI_INTEGER,id_read,MPI_COMM_WORLD,mp_ierr)
937	if (mp_ierr /= 0) goto 600
938	call MPI_Bcast(numbwf,1,MPI_INTEGER,id_read,MPI_COMM_WORLD,mp_ierr)
939	if (mp_ierr /= 0) goto 600
940	call MPI_Bcast(nmixz,1,MPI_INTEGER,id_read,MPI_COMM_WORLD,mp_ierr)
941	if (mp_ierr /= 0) goto 600
942	call MPI_Bcast(height,nzmax,MPI_INTEGER,id_read,MPI_COMM_WORLD,mp_ierr)
943	if (mp_ierr /= 0) goto 600
944
945	first_call=.false.
946	endif
947
948	call MPI_Bcast(uu(:,:,:,li:ui),d3s1,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
949	if (mp_ierr /= 0) goto 600
950	call MPI_Bcast(vv(:,:,:,li:ui),d3s1,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
951	if (mp_ierr /= 0) goto 600
952	call MPI_Bcast(uupol(:,:,:,li:ui),d3s1,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
953	if (mp_ierr /= 0) goto 600
954	call MPI_Bcast(vvpol(:,:,:,li:ui),d3s1,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
955	if (mp_ierr /= 0) goto 600
956	call MPI_Bcast(ww(:,:,:,li:ui),d3s1,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
957	if (mp_ierr /= 0) goto 600
958	call MPI_Bcast(tt(:,:,:,li:ui),d3s1,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
959	if (mp_ierr /= 0) goto 600
960	call MPI_Bcast(rho(:,:,:,li:ui),d3s1,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
961	if (mp_ierr /= 0) goto 600
962	call MPI_Bcast(drhodz(:,:,:,li:ui),d3s1,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
963	if (mp_ierr /= 0) goto 600
964	call MPI_Bcast(tth(:,:,:,li:ui),d3s2,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
965	if (mp_ierr /= 0) goto 600
966	call MPI_Bcast(qvh(:,:,:,li:ui),d3s2,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
967	if (mp_ierr /= 0) goto 600
968	call MPI_Bcast(qv(:,:,:,li:ui),d3s1,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
969	if (mp_ierr /= 0) goto 600
970	call MPI_Bcast(pv(:,:,:,li:ui),d3s1,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
971	if (mp_ierr /= 0) goto 600
972	call MPI_Bcast(clouds(:,:,:,li:ui),d3s1,MPI_INTEGER1,id_read,MPI_COMM_WORLD,mp_ierr)
973	if (mp_ierr /= 0) goto 600
974
975	! cloud water/ice:
976	if (readclouds) then
977	! call MPI_Bcast(icloud_stats(:,:,:,li:ui),d2s1*5,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
978	! if (mp_ierr /= 0) goto 600
979	call MPI_Bcast(clw4(:,:,li:ui),d2s1,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
980	if (mp_ierr /= 0) goto 600
981	! call MPI_Bcast(clwc(:,:,:,li:ui),d3s1,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
982	! if (mp_ierr /= 0) goto 600
983	! call MPI_Bcast(ciwc(:,:,:,li:ui),d3s1,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
984	! if (mp_ierr /= 0) goto 600
985	end if
986
987	! 2D fields
988	call MPI_Bcast(cloudsh(:,:,li:ui),d2s1,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
989	if (mp_ierr /= 0) goto 600
990	call MPI_Bcast(vdep(:,:,:,li:ui),d2s2,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
991	if (mp_ierr /= 0) goto 600
992	call MPI_Bcast(ps(:,:,:,li:ui),d2s1,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
993	if (mp_ierr /= 0) goto 600
994	call MPI_Bcast(sd(:,:,:,li:ui),d2s1,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
995	if (mp_ierr /= 0) goto 600
996	call MPI_Bcast(tcc(:,:,:,li:ui),d2s1,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
997	if (mp_ierr /= 0) goto 600
998	call MPI_Bcast(tt2(:,:,:,li:ui),d2s1,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
999	if (mp_ierr /= 0) goto 600
1000	call MPI_Bcast(td2(:,:,:,li:ui),d2s1,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
1001	if (mp_ierr /= 0) goto 600
1002	call MPI_Bcast(lsprec(:,:,:,li:ui),d2s1,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
1003	if (mp_ierr /= 0) goto 600
1004	call MPI_Bcast(convprec(:,:,:,li:ui),d2s1,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
1005	if (mp_ierr /= 0) goto 600
1006	call MPI_Bcast(ustar(:,:,:,li:ui),d2s1,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
1007	if (mp_ierr /= 0) goto 600
1008	call MPI_Bcast(wstar(:,:,:,li:ui),d2s1,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
1009	if (mp_ierr /= 0) goto 600
1010	call MPI_Bcast(hmix(:,:,:,li:ui),d2s1,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
1011	if (mp_ierr /= 0) goto 600
1012	call MPI_Bcast(tropopause(:,:,:,li:ui),d2s1,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
1013	if (mp_ierr /= 0) goto 600
1014	call MPI_Bcast(oli(:,:,:,li:ui),d2s1,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
1015	if (mp_ierr /= 0) goto 600
1016
1017	if (mp_measure_time) call mpif_mtime('commtime',1)
1018
1019	goto 601
1020
1021	600 write(,) "mpi_mod> mp_ierr \= 0", mp_ierr
1022	stop
1023
1024	601 end subroutine mpif_gf_send_vars
1025
1026
1027	subroutine mpif_gf_send_vars_nest(memstat)
1028	!***********************************************************************
1029	! DESCRIPTION
1030	! Distribute 'getfield' variables from reader process to all processes.
1031	! For nested fields
1032	!
1033	! Called from timemanager
1034	!
1035	! NOTE
1036	! This subroutine distributes nested windfields from the reader process to
1037	! all other processes. Usually one set of fields is transfered, but at
1038	! first timestep when there are no fields in memory, both are transfered.
1039	! MPI_Bcast is used, so implicitly all processes are synchronized at this
1040	! step
1041	!
1042	!
1043	!***********************************************************************
1044	use com_mod
1045	use par_mod, only: numwfmem
1046
1047	implicit none
1048
1049	integer, intent(in) :: memstat
1050	integer :: i
1051	! li,ui lower,upper indices of fields to be transfered (1-3, ui>=li)
1052	integer :: li,ui
1053
1054	! Common array sizes used for communications
1055	integer :: d3_size1 = nxmaxnnymaxnnzmax
1056	integer :: d3_size2 = nxmaxnnymaxnnuvzmax
1057	integer :: d2_size1 = nxmaxn*nymaxn
1058	integer :: d2_size2 = nxmaxnnymaxnmaxspec
1059	integer :: d2_size3 = nxmaxn*nymaxn
1060
1061	integer :: d3s1,d3s2,d2s1,d2s2
1062
1063	! First time routine is called the unchangeable fields will be transfered
1064	logical :: first_call=.true.
1065
1066	!**********************************************************************
1067
1068	! Sizes of arrays transfered
1069	d3s1=d3_size1
1070	d3s2=d3_size2
1071	d2s1=d2_size1
1072	d2s2=d2_size2
1073
1074	! Decide which field(s) need to be transfered
1075	if (memstat.ge.32) then ! distribute 2 fields
1076	li=1; ui=2
1077	d3s1=2*d3_size1
1078	d3s2=2*d3_size2
1079	d2s1=2*d2_size1
1080	d2s2=2*d2_size2
1081	else if (memstat.eq.17) then ! distribute 1 field, on 1st index
1082	li=1; ui=1
1083	else if (memstat.eq.18) then ! distribute 1 field, on 2nd index
1084	li=2; ui=2
1085	else if (memstat.eq.19) then ! distribute 1 field, on 3nd index
1086	li=3; ui=3
1087	else
1088	write(,) '#### mpi_mod::mpif_gf_send_vars_nest> ERROR: ', &
1089	& 'wrong value of memstat, exiting ####', memstat
1090	stop
1091	end if
1092
1093
1094	! Time for MPI communications
1095	if (mp_measure_time) call mpif_mtime('commtime',0)
1096
1097	! Distribute variables, send from getfield process (id_read) to other
1098	! processes
1099	!**********************************************************************
1100
1101	! The non-reader processes need to know if cloud water were read.
1102	call MPI_Bcast(readclouds_nest,maxnests,MPI_LOGICAL,id_read,MPI_COMM_WORLD,mp_ierr)
1103	if (mp_ierr /= 0) goto 600
1104
1105	! Static fields/variables sent only at startup
1106	if (first_call) then
1107	call MPI_Bcast(oron(:,:,:),d2_size3,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
1108	if (mp_ierr /= 0) goto 600
1109	call MPI_Bcast(excessoron(:,:,:),d2_size3,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
1110	if (mp_ierr /= 0) goto 600
1111	call MPI_Bcast(lsmn(:,:,:),d2_size3,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
1112	if (mp_ierr /= 0) goto 600
1113	call MPI_Bcast(xlandusen(:,:,:,:),d2_size3*numclass,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
1114	if (mp_ierr /= 0) goto 600
1115	first_call=.false.
1116	end if
1117
1118	! MPI prefers contiguous arrays for sending (else a buffer is created),
1119	! hence the loop over nests
1120	!**********************************************************************
1121	do i=1, numbnests
1122	! 3D fields
1123	call MPI_Bcast(uun(:,:,:,li:ui,i),d3s1,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
1124	if (mp_ierr /= 0) goto 600
1125	call MPI_Bcast(vvn(:,:,:,li:ui,i),d3s1,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
1126	if (mp_ierr /= 0) goto 600
1127	call MPI_Bcast(wwn(:,:,:,li:ui,i),d3s1,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
1128	if (mp_ierr /= 0) goto 600
1129	call MPI_Bcast(ttn(:,:,:,li:ui,i),d3s1,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
1130	if (mp_ierr /= 0) goto 600
1131	call MPI_Bcast(rhon(:,:,:,li:ui,i),d3s1,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
1132	if (mp_ierr /= 0) goto 600
1133	call MPI_Bcast(drhodzn(:,:,:,li:ui,i),d3s1,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
1134	if (mp_ierr /= 0) goto 600
1135	call MPI_Bcast(tthn(:,:,:,li:ui,i),d3s2,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
1136	if (mp_ierr /= 0) goto 600
1137	call MPI_Bcast(qvhn(:,:,:,li:ui,i),d3s2,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
1138	if (mp_ierr /= 0) goto 600
1139	call MPI_Bcast(qvn(:,:,:,li:ui,i),d3s1,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
1140	if (mp_ierr /= 0) goto 600
1141	call MPI_Bcast(pvn(:,:,:,li:ui,i),d3s1,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
1142	if (mp_ierr /= 0) goto 600
1143	call MPI_Bcast(cloudsn(:,:,:,li:ui,i),d3s1,MPI_INTEGER1,id_read,MPI_COMM_WORLD,mp_ierr)
1144	if (mp_ierr /= 0) goto 600
1145
1146	! cloud water/ice:
1147	if (readclouds_nest(i)) then
1148	! call MPI_Bcast(icloud_stats(:,:,:,li:ui),d2s1*5,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
1149	! if (mp_ierr /= 0) goto 600
1150	call MPI_Bcast(clw4n(:,:,li:ui,i),d2s1,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
1151	if (mp_ierr /= 0) goto 600
1152	end if
1153
1154	! 2D fields
1155	call MPI_Bcast(cloudshn(:,:,li:ui,i),d2s1,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
1156	if (mp_ierr /= 0) goto 600
1157	call MPI_Bcast(vdepn(:,:,:,li:ui,i),d2s2,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
1158	if (mp_ierr /= 0) goto 600
1159	call MPI_Bcast(psn(:,:,:,li:ui,i),d2s1,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
1160	if (mp_ierr /= 0) goto 600
1161	call MPI_Bcast(sdn(:,:,:,li:ui,i),d2s1,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
1162	if (mp_ierr /= 0) goto 600
1163	call MPI_Bcast(tccn(:,:,:,li:ui,i),d2s1,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
1164	if (mp_ierr /= 0) goto 600
1165	call MPI_Bcast(tt2n(:,:,:,li:ui,i),d2s1,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
1166	if (mp_ierr /= 0) goto 600
1167	call MPI_Bcast(td2n(:,:,:,li:ui,i),d2s1,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
1168	if (mp_ierr /= 0) goto 600
1169	call MPI_Bcast(lsprecn(:,:,:,li:ui,i),d2s1,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
1170	if (mp_ierr /= 0) goto 600
1171	call MPI_Bcast(convprecn(:,:,:,li:ui,i),d2s1,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
1172	if (mp_ierr /= 0) goto 600
1173	call MPI_Bcast(ustarn(:,:,:,li:ui,i),d2s1,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
1174	if (mp_ierr /= 0) goto 600
1175	call MPI_Bcast(wstarn(:,:,:,li:ui,i),d2s1,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
1176	if (mp_ierr /= 0) goto 600
1177	call MPI_Bcast(olin(:,:,:,li:ui,i),d2s1,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
1178	if (mp_ierr /= 0) goto 600
1179	call MPI_Bcast(hmixn(:,:,:,li:ui,i),d2s1,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
1180	if (mp_ierr /= 0) goto 600
1181	call MPI_Bcast(tropopausen(:,:,:,li:ui,i),d2s1,mp_sp,id_read,MPI_COMM_WORLD,mp_ierr)
1182	if (mp_ierr /= 0) goto 600
1183	end do
1184
1185	if (mp_measure_time) call mpif_mtime('commtime',1)
1186
1187	goto 601
1188
1189	600 write(,) "mpi_mod> mp_ierr \= 0",mp_ierr
1190	stop
1191
1192	601 end subroutine mpif_gf_send_vars_nest
1193
1194
1195	subroutine mpif_gf_send_vars_async(memstat)
1196	!*******************************************************************************
1197	! DESCRIPTION
1198	! Distribute 'getfield' variables from reader process to all processes.
1199	! Called from timemanager by reader process only
1200	!
1201	! NOTE
1202	! This version uses asynchronious sends. The newest fields are sent in the
1203	! background, so calculations can continue while
1204	! MPI communications are performed.
1205	!
1206	! The way the MPI tags/requests are sequenced means that this routine must
1207	! carefully match routine 'mpif_gf_recv_vars_async'
1208	!
1209	! VARIABLES
1210	! memstat -- input, for resolving pointer to windfield index being read
1211	! mind -- index where to place new fields
1212	!
1213	!
1214	!*******************************************************************************
1215	use com_mod
1216
1217	implicit none
1218
1219	integer, intent(in) :: memstat
1220	integer :: mind
1221	integer :: dest,i
1222
1223	! Common array sizes used for communications
1224	integer :: d3s1 = nxmaxnymaxnzmax
1225	integer :: d3s2 = nxmaxnymaxnuvzmax
1226	integer :: d2s1 = nxmax*nymax
1227	integer :: d2s2 = nxmaxnymaxmaxspec
1228	integer :: d1s1 = maxwf
1229
1230	!*******************************************************************************
1231
1232	! At the time the send is posted, the reader process is one step further
1233	! in the permutation of memstat compared with the receiving processes
1234
1235	if (memstat.ge.32) then
1236	! last read was synchronous, to indices 1 and 2, 3 is free
1237	write(,) "#### mpi_mod::mpif_gf_send_vars_async> ERROR: &
1238	& memstat>=32 should never happen here."
1239	stop
1240	else if (memstat.eq.17) then
1241	! old fields on 1,2, send 3
1242	mind=3
1243	else if (memstat.eq.18) then
1244	! old fields on 2,3, send 1
1245	mind=1
1246	else if (memstat.eq.19) then
1247	! old fields on 3,1, send 2
1248	mind=2
1249	else
1250	write(,) "#### mpi_mod::mpif_gf_send_vars_async> ERROR: &
1251	& invalid memstat"
1252	end if
1253
1254	if (mp_dev_mode) then
1255	if (mp_pid.ne.id_read) then
1256	write(,) 'MPI_DEV_MODE: error calling mpif_gf_send_vars_async'
1257	end if
1258	end if
1259
1260	if (mp_dev_mode) write(,) '## in mpif_gf_send_vars_async, memstat:', memstat
1261
1262	! Time for MPI communications
1263	if (mp_measure_time) call mpif_mtime('commtime',0)
1264
1265	! Loop over receiving processes, initiate data sending
1266	!*****************************************************
1267
1268	do dest=0,mp_np-1 ! mp_np-2 will also work if last proc reserved for reading
1269	! TODO: use mp_partgroup_np here
1270	if (dest.eq.id_read) cycle
1271	i=dest*nvar_async
1272	call MPI_Isend(uu(:,:,:,mind),d3s1,mp_sp,dest,tm1,MPI_COMM_WORLD,reqs(i),mp_ierr)
1273	if (mp_ierr /= 0) goto 600
1274	i=i+1
1275	call MPI_Isend(vv(:,:,:,mind),d3s1,mp_sp,dest,tm1,MPI_COMM_WORLD,reqs(i),mp_ierr)
1276	if (mp_ierr /= 0) goto 600
1277	i=i+1
1278	call MPI_Isend(uupol(:,:,:,mind),d3s1,mp_sp,dest,tm1,MPI_COMM_WORLD,reqs(i),mp_ierr)
1279	if (mp_ierr /= 0) goto 600
1280	i=i+1
1281	call MPI_Isend(vvpol(:,:,:,mind),d3s1,mp_sp,dest,tm1,MPI_COMM_WORLD,reqs(i),mp_ierr)
1282	if (mp_ierr /= 0) goto 600
1283	i=i+1
1284	call MPI_Isend(ww(:,:,:,mind),d3s1,mp_sp,dest,tm1,MPI_COMM_WORLD,reqs(i),mp_ierr)
1285	if (mp_ierr /= 0) goto 600
1286	i=i+1
1287	call MPI_Isend(tt(:,:,:,mind),d3s1,mp_sp,dest,tm1,MPI_COMM_WORLD,reqs(i),mp_ierr)
1288	if (mp_ierr /= 0) goto 600
1289	i=i+1
1290	call MPI_Isend(rho(:,:,:,mind),d3s1,mp_sp,dest,tm1,MPI_COMM_WORLD,reqs(i),mp_ierr)
1291	if (mp_ierr /= 0) goto 600
1292	i=i+1
1293	call MPI_Isend(drhodz(:,:,:,mind),d3s1,mp_sp,dest,tm1,MPI_COMM_WORLD,reqs(i),mp_ierr)
1294	if (mp_ierr /= 0) goto 600
1295	i=i+1
1296	call MPI_Isend(tth(:,:,:,mind),d3s2,mp_sp,dest,tm1,MPI_COMM_WORLD,reqs(i),mp_ierr)
1297	if (mp_ierr /= 0) goto 600
1298	i=i+1
1299	call MPI_Isend(qvh(:,:,:,mind),d3s2,mp_sp,dest,tm1,MPI_COMM_WORLD,reqs(i),mp_ierr)
1300	if (mp_ierr /= 0) goto 600
1301	i=i+1
1302	call MPI_Isend(qv(:,:,:,mind),d3s1,mp_sp,dest,tm1,MPI_COMM_WORLD,reqs(i),mp_ierr)
1303	if (mp_ierr /= 0) goto 600
1304	i=i+1
1305	call MPI_Isend(pv(:,:,:,mind),d3s1,mp_sp,dest,tm1,MPI_COMM_WORLD,reqs(i),mp_ierr)
1306	if (mp_ierr /= 0) goto 600
1307	i=i+1
1308	call MPI_Isend(clouds(:,:,:,mind),d3s1,MPI_INTEGER1,dest,tm1,MPI_COMM_WORLD,reqs(i),mp_ierr)
1309	i=i+1
1310	if (mp_ierr /= 0) goto 600
1311
1312	call MPI_Isend(cloudsh(:,:,mind),d2s1,mp_sp,dest,tm1,MPI_COMM_WORLD,reqs(i),mp_ierr)
1313	if (mp_ierr /= 0) goto 600
1314	i=i+1
1315	call MPI_Isend(vdep(:,:,:,mind),d2s2,mp_sp,dest,tm1,MPI_COMM_WORLD,reqs(i),mp_ierr)
1316	if (mp_ierr /= 0) goto 600
1317	i=i+1
1318	call MPI_Isend(ps(:,:,:,mind),d2s1,mp_sp,dest,tm1,MPI_COMM_WORLD,reqs(i),mp_ierr)
1319	if (mp_ierr /= 0) goto 600
1320	i=i+1
1321	call MPI_Isend(sd(:,:,:,mind),d2s1,mp_sp,dest,tm1,MPI_COMM_WORLD,reqs(i),mp_ierr)
1322	if (mp_ierr /= 0) goto 600
1323	i=i+1
1324	call MPI_Isend(tcc(:,:,:,mind),d2s1,mp_sp,dest,tm1,MPI_COMM_WORLD,reqs(i),mp_ierr)
1325	if (mp_ierr /= 0) goto 600
1326	i=i+1
1327	call MPI_Isend(tt2(:,:,:,mind),d2s1,mp_sp,dest,tm1,MPI_COMM_WORLD,reqs(i),mp_ierr)
1328	if (mp_ierr /= 0) goto 600
1329	i=i+1
1330	call MPI_Isend(td2(:,:,:,mind),d2s1,mp_sp,dest,tm1,MPI_COMM_WORLD,reqs(i),mp_ierr)
1331	if (mp_ierr /= 0) goto 600
1332	i=i+1
1333	call MPI_Isend(lsprec(:,:,:,mind),d2s1,mp_sp,dest,tm1,MPI_COMM_WORLD,reqs(i),mp_ierr)
1334	if (mp_ierr /= 0) goto 600
1335	i=i+1
1336	call MPI_Isend(convprec(:,:,:,mind),d2s1,mp_sp,dest,tm1,MPI_COMM_WORLD,reqs(i),mp_ierr)
1337	if (mp_ierr /= 0) goto 600
1338	i=i+1
1339	call MPI_Isend(ustar(:,:,:,mind),d2s1,mp_sp,dest,tm1,MPI_COMM_WORLD,reqs(i),mp_ierr)
1340	if (mp_ierr /= 0) goto 600
1341	i=i+1
1342	call MPI_Isend(wstar(:,:,:,mind),d2s1,mp_sp,dest,tm1,MPI_COMM_WORLD,reqs(i),mp_ierr)
1343	if (mp_ierr /= 0) goto 600
1344	i=i+1
1345	call MPI_Isend(hmix(:,:,:,mind),d2s1,mp_sp,dest,tm1,MPI_COMM_WORLD,reqs(i),mp_ierr)
1346	if (mp_ierr /= 0) goto 600
1347	i=i+1
1348	call MPI_Isend(tropopause(:,:,:,mind),d2s1,mp_sp,dest,tm1,MPI_COMM_WORLD,reqs(i),mp_ierr)
1349	if (mp_ierr /= 0) goto 600
1350	i=i+1
1351	call MPI_Isend(oli(:,:,:,mind),d2s1,mp_sp,dest,tm1,MPI_COMM_WORLD,reqs(i),mp_ierr)
1352	if (mp_ierr /= 0) goto 600
1353
1354	! Send cloud water if it exists. Increment counter always (as on receiving end)
1355	if (readclouds) then
1356	i=i+1
1357	! call MPI_Isend(icloud_stats(:,:,:,mind),d2s1*5,mp_sp,dest,tm1,&
1358	! &MPI_COMM_WORLD,reqs(i),mp_ierr)
1359	call MPI_Isend(clw4(:,:,mind),d2s1,mp_sp,dest,tm1,&
1360	&MPI_COMM_WORLD,reqs(i),mp_ierr)
1361
1362	if (mp_ierr /= 0) goto 600
1363
1364	! call MPI_Isend(clwc(:,:,:,mind),d3s1,mp_sp,dest,tm1,&
1365	! &MPI_COMM_WORLD,reqs(i),mp_ierr)
1366	! if (mp_ierr /= 0) goto 600
1367	! i=i+1
1368
1369	! call MPI_Isend(ciwc(:,:,:,mind),d3s1,mp_sp,dest,tm1,&
1370	! &MPI_COMM_WORLD,reqs(i),mp_ierr)
1371	! if (mp_ierr /= 0) goto 600
1372
1373	end if
1374	end do
1375
1376	if (mp_measure_time) call mpif_mtime('commtime',1)
1377
1378	goto 601
1379
1380	600 write(,) "#### mpi_mod::mpif_gf_send_vars_async> mp_ierr \= 0", mp_ierr
1381	stop
1382
1383	601 end subroutine mpif_gf_send_vars_async
1384
1385
1386	subroutine mpif_gf_recv_vars_async(memstat)
1387	!*******************************************************************************
1388	! DESCRIPTION
1389	! Receive 'getfield' variables from reader process.
1390	! Called from timemanager by all processes except reader
1391	!
1392	! NOTE
1393	! This version uses asynchronious communications.
1394	!
1395	! VARIABLES
1396	! memstat -- input, used to resolve windfield index being received
1397	!
1398	!
1399	!*******************************************************************************
1400	use com_mod
1401
1402	implicit none
1403
1404	integer, intent(in) :: memstat
1405	integer :: mind,j
1406
1407	! Common array sizes used for communications
1408	integer :: d3s1 = nxmaxnymaxnzmax
1409	integer :: d3s2 = nxmaxnymaxnuvzmax
1410	integer :: d2s1 = nxmax*nymax
1411	integer :: d2s2 = nxmaxnymaxmaxspec
1412	!integer :: d1_size1 = maxwf
1413
1414	! integer :: d3s1,d3s2,d2s1,d2s2
1415	!*******************************************************************************
1416
1417	! At the time this immediate receive is posted, memstat is the state of
1418	! windfield indices at the previous/current time. From this, the future
1419	! state is deduced.
1420	if (memstat.eq.32) then
1421	! last read was synchronous to indices 1 and 2, 3 is free
1422	mind=3
1423	else if (memstat.eq.17) then
1424	! last read was asynchronous to index 3, 1 is free
1425	mind=1
1426	else if (memstat.eq.18) then
1427	! last read was asynchronous to index 1, 2 is free
1428	mind=2
1429	else if (memstat.eq.19) then
1430	! last read was asynchronous to index 2, 3 is free
1431	mind=3
1432	end if
1433
1434	if (mp_dev_mode) then
1435	if (mp_pid.eq.id_read) then
1436	write(,) 'MPI_DEV_MODE: error calling mpif_gf_recv_vars_async'
1437	end if
1438	end if
1439
1440	! Time for MPI communications
1441	if (mp_measure_time) call mpif_mtime('commtime',0)
1442
1443	if (mp_dev_mode) write(,) '## in mpif_gf_send_vars_async, memstat:', memstat
1444
1445	! Initiate receiving of data
1446	!***************************
1447
1448	! Get MPI tags/requests for communications
1449	j=mp_pid*nvar_async
1450	call MPI_Irecv(uu(:,:,:,mind),d3s1,mp_sp,id_read,MPI_ANY_TAG,&
1451	&MPI_COMM_WORLD,reqs(j),mp_ierr)
1452	if (mp_ierr /= 0) goto 600
1453	j=j+1
1454	call MPI_Irecv(vv(:,:,:,mind),d3s1,mp_sp,id_read,MPI_ANY_TAG,&
1455	&MPI_COMM_WORLD,reqs(j),mp_ierr)
1456	if (mp_ierr /= 0) goto 600
1457	j=j+1
1458	call MPI_Irecv(uupol(:,:,:,mind),d3s1,mp_sp,id_read,MPI_ANY_TAG,&
1459	&MPI_COMM_WORLD,reqs(j),mp_ierr)
1460	if (mp_ierr /= 0) goto 600
1461	j=j+1
1462	call MPI_Irecv(vvpol(:,:,:,mind),d3s1,mp_sp,id_read,MPI_ANY_TAG,&
1463	&MPI_COMM_WORLD,reqs(j),mp_ierr)
1464	if (mp_ierr /= 0) goto 600
1465	j=j+1
1466	call MPI_Irecv(ww(:,:,:,mind),d3s1,mp_sp,id_read,MPI_ANY_TAG,&
1467	&MPI_COMM_WORLD,reqs(j),mp_ierr)
1468	if (mp_ierr /= 0) goto 600
1469	j=j+1
1470	call MPI_Irecv(tt(:,:,:,mind),d3s1,mp_sp,id_read,MPI_ANY_TAG,&
1471	&MPI_COMM_WORLD,reqs(j),mp_ierr)
1472	if (mp_ierr /= 0) goto 600
1473	j=j+1
1474	call MPI_Irecv(rho(:,:,:,mind),d3s1,mp_sp,id_read,MPI_ANY_TAG,&
1475	&MPI_COMM_WORLD,reqs(j),mp_ierr)
1476	if (mp_ierr /= 0) goto 600
1477	j=j+1
1478	call MPI_Irecv(drhodz(:,:,:,mind),d3s1,mp_sp,id_read,MPI_ANY_TAG,&
1479	&MPI_COMM_WORLD,reqs(j),mp_ierr)
1480	if (mp_ierr /= 0) goto 600
1481	j=j+1
1482	call MPI_Irecv(tth(:,:,:,mind),d3s2,mp_sp,id_read,MPI_ANY_TAG,&
1483	&MPI_COMM_WORLD,reqs(j),mp_ierr)
1484	if (mp_ierr /= 0) goto 600
1485	j=j+1
1486	call MPI_Irecv(qvh(:,:,:,mind),d3s2,mp_sp,id_read,MPI_ANY_TAG,&
1487	&MPI_COMM_WORLD,reqs(j),mp_ierr)
1488	if (mp_ierr /= 0) goto 600
1489	j=j+1
1490
1491	call MPI_Irecv(qv(:,:,:,mind),d3s1,mp_sp,id_read,MPI_ANY_TAG,&
1492	&MPI_COMM_WORLD,reqs(j),mp_ierr)
1493	if (mp_ierr /= 0) goto 600
1494	j=j+1
1495	call MPI_Irecv(pv(:,:,:,mind),d3s1,mp_sp,id_read,MPI_ANY_TAG,&
1496	&MPI_COMM_WORLD,reqs(j),mp_ierr)
1497	if (mp_ierr /= 0) goto 600
1498	j=j+1
1499	call MPI_Irecv(clouds(:,:,:,mind),d3s1,MPI_INTEGER1,id_read,MPI_ANY_TAG,&
1500	&MPI_COMM_WORLD,reqs(j),mp_ierr)
1501	if (mp_ierr /= 0) goto 600
1502	j=j+1
1503
1504	call MPI_Irecv(cloudsh(:,:,mind),d2s1,mp_sp,id_read,MPI_ANY_TAG,&
1505	&MPI_COMM_WORLD,reqs(j),mp_ierr)
1506	if (mp_ierr /= 0) goto 600
1507	j=j+1
1508	call MPI_Irecv(vdep(:,:,:,mind),d2s2,mp_sp,id_read,MPI_ANY_TAG,&
1509	&MPI_COMM_WORLD,reqs(j),mp_ierr)
1510	if (mp_ierr /= 0) goto 600
1511	j=j+1
1512	call MPI_Irecv(ps(:,:,:,mind),d2s1,mp_sp,id_read,MPI_ANY_TAG,&
1513	&MPI_COMM_WORLD,reqs(j),mp_ierr)
1514	if (mp_ierr /= 0) goto 600
1515	j=j+1
1516	call MPI_Irecv(sd(:,:,:,mind),d2s1,mp_sp,id_read,MPI_ANY_TAG,&
1517	&MPI_COMM_WORLD,reqs(j),mp_ierr)
1518	if (mp_ierr /= 0) goto 600
1519	j=j+1
1520	call MPI_Irecv(tcc(:,:,:,mind),d2s1,mp_sp,id_read,MPI_ANY_TAG,&
1521	&MPI_COMM_WORLD,reqs(j),mp_ierr)
1522	if (mp_ierr /= 0) goto 600
1523	j=j+1
1524	call MPI_Irecv(tt2(:,:,:,mind),d2s1,mp_sp,id_read,MPI_ANY_TAG,&
1525	&MPI_COMM_WORLD,reqs(j),mp_ierr)
1526	if (mp_ierr /= 0) goto 600
1527	j=j+1
1528	call MPI_Irecv(td2(:,:,:,mind),d2s1,mp_sp,id_read,MPI_ANY_TAG,&
1529	&MPI_COMM_WORLD,reqs(j),mp_ierr)
1530	if (mp_ierr /= 0) goto 600
1531	j=j+1
1532	call MPI_Irecv(lsprec(:,:,:,mind),d2s1,mp_sp,id_read,MPI_ANY_TAG,&
1533	&MPI_COMM_WORLD,reqs(j),mp_ierr)
1534	if (mp_ierr /= 0) goto 600
1535	j=j+1
1536	call MPI_Irecv(convprec(:,:,:,mind),d2s1,mp_sp,id_read,MPI_ANY_TAG,&
1537	&MPI_COMM_WORLD,reqs(j),mp_ierr)
1538	if (mp_ierr /= 0) goto 600
1539
1540	call MPI_Irecv(ustar(:,:,:,mind),d2s1,mp_sp,id_read,MPI_ANY_TAG,&
1541	&MPI_COMM_WORLD,reqs(j),mp_ierr)
1542	if (mp_ierr /= 0) goto 600
1543	j=j+1
1544	call MPI_Irecv(wstar(:,:,:,mind),d2s1,mp_sp,id_read,MPI_ANY_TAG,&
1545	&MPI_COMM_WORLD,reqs(j),mp_ierr)
1546	if (mp_ierr /= 0) goto 600
1547	j=j+1
1548	call MPI_Irecv(hmix(:,:,:,mind),d2s1,mp_sp,id_read,MPI_ANY_TAG,&
1549	&MPI_COMM_WORLD,reqs(j),mp_ierr)
1550	if (mp_ierr /= 0) goto 600
1551	j=j+1
1552	call MPI_Irecv(tropopause(:,:,:,mind),d2s1,mp_sp,id_read,MPI_ANY_TAG,&
1553	&MPI_COMM_WORLD,reqs(j),mp_ierr)
1554	if (mp_ierr /= 0) goto 600
1555	j=j+1
1556	call MPI_Irecv(oli(:,:,:,mind),d2s1,mp_sp,id_read,MPI_ANY_TAG,&
1557	&MPI_COMM_WORLD,reqs(j),mp_ierr)
1558	if (mp_ierr /= 0) goto 600
1559
1560
1561	! Post request for clwc. These data are possibly not sent, request must then be cancelled
1562	! For now assume that data at all steps either have or do not have water
1563	if (readclouds) then
1564	j=j+1
1565
1566	! call MPI_Irecv(icloud_stats(:,:,:,mind),d2s1*5,mp_sp,id_read,MPI_ANY_TAG,&
1567	! &MPI_COMM_WORLD,reqs(j),mp_ierr)
1568	call MPI_Irecv(clw4(:,:,mind),d2s1*5,mp_sp,id_read,MPI_ANY_TAG,&
1569	&MPI_COMM_WORLD,reqs(j),mp_ierr)
1570	if (mp_ierr /= 0) goto 600
1571
1572	! call MPI_Irecv(clwc(:,:,:,mind),d3s1,mp_sp,id_read,MPI_ANY_TAG,&
1573	! &MPI_COMM_WORLD,reqs(j),mp_ierr)
1574	! if (mp_ierr /= 0) goto 600
1575	! j=j+1
1576	! call MPI_Irecv(ciwc(:,:,:,mind),d3s1,mp_sp,id_read,MPI_ANY_TAG,&
1577	! &MPI_COMM_WORLD,reqs(j),mp_ierr)
1578	! if (mp_ierr /= 0) goto 600
1579
1580	end if
1581
1582
1583	if (mp_measure_time) call mpif_mtime('commtime',1)
1584
1585	goto 601
1586
1587	600 write(,) "#### mpi_mod::mpif_gf_recv_vars_async> MPI ERROR ", mp_ierr
1588	stop
1589
1590	601 end subroutine mpif_gf_recv_vars_async
1591
1592
1593	subroutine mpif_gf_request
1594	!*******************************************************************************
1595	! DESCRIPTION
1596	! Check for completion of MPI_Isend/MPI_Irecv data transfer.
1597	!
1598	!
1599	! NOTE
1600	! implicit synchronisation between all processes takes place here
1601	!
1602	!
1603	!*******************************************************************************
1604	use com_mod, only: readclouds
1605
1606	implicit none
1607
1608
1609	integer :: n_req
1610	integer :: i
1611
1612	!***********************************************************************
1613
1614	n_req=nvar_async*mp_np
1615
1616	if (mp_measure_time) call mpif_mtime('commtime',0)
1617
1618	! call MPI_Wait(rm1,MPI_STATUS_IGNORE,mp_ierr)
1619
1620	! TODO: cancel recv request if readclouds=.false.
1621	! if (readclouds) then
1622	call MPI_Waitall(n_req,reqs,MPI_STATUSES_IGNORE,mp_ierr)
1623	! endif
1624	! else
1625	! do i = 0, nvar_async*mp_np-1
1626	! if (mod(i,27).eq.0 .or. mod(i,28).eq.0) then
1627	! call MPI_Cancel(reqs(i),mp_ierr)
1628	! cycle
1629	! end if
1630	! call MPI_Wait(reqs(i),MPI_STATUS_IGNORE,mp_ierr)
1631	! end do
1632	! end if
1633
1634	if (mp_ierr /= 0) goto 600
1635
1636	if (mp_measure_time) call mpif_mtime('commtime',1)
1637
1638	goto 601
1639
1640	600 write(,) "#### mpi_mod::mpif_gf_request> MPI ERROR ", mp_ierr
1641	stop
1642
1643	601 end subroutine mpif_gf_request
1644
1645
1646	subroutine mpif_tm_reduce_grid
1647	!***********************************************************************
1648	! Collect grid variable to PID 0, adding from all processes.
1649	!
1650	! NOTE
1651	! - Older MPI implementations may lack the MPI_IN_PLACE operation.
1652	! If so use 1) below and change unc_mod
1653	!
1654	!***********************************************************************
1655	use com_mod
1656	use unc_mod
1657	use par_mod
1658
1659	implicit none
1660
1661	integer :: grid_size2d,grid_size3d
1662	integer, parameter :: rcpt_size=maxreceptor*maxspec
1663
1664	!**********************************************************************
1665	grid_size2d=numxgridnumygridmaxspec* &
1666	& maxpointspec_actnclassuncmaxageclass
1667	grid_size3d=numxgridnumygridnumzgridmaxspec &
1668	& maxpointspec_actnclassuncmaxageclass
1669
1670
1671	! Time for MPI communications
1672	if (mp_measure_time) call mpif_mtime('commtime',0)
1673
1674	! 1) Using a separate grid (gridunc0) for received values
1675	! call MPI_Reduce(gridunc, gridunc0, grid_size3d, mp_sp, MPI_SUM, id_root, &
1676	! & mp_comm_used, mp_ierr)
1677	! if (mp_ierr /= 0) goto 600
1678
1679	! 2) Using in-place reduction
1680	if (lroot) then
1681	call MPI_Reduce(MPI_IN_PLACE, gridunc, grid_size3d, mp_sp, MPI_SUM, id_root, &
1682	& mp_comm_used, mp_ierr)
1683	if (mp_ierr /= 0) goto 600
1684	else
1685	call MPI_Reduce(gridunc, gridunc, grid_size3d, mp_sp, MPI_SUM, id_root, &
1686	& mp_comm_used, mp_ierr)
1687	end if
1688
1689	if ((WETDEP).and.(ldirect.gt.0)) then
1690	call MPI_Reduce(wetgridunc, wetgridunc0, grid_size2d, mp_cp, MPI_SUM, id_root, &
1691	& mp_comm_used, mp_ierr)
1692	if (mp_ierr /= 0) goto 600
1693	end if
1694
1695	if ((DRYDEP).and.(ldirect.gt.0)) then
1696	call MPI_Reduce(drygridunc, drygridunc0, grid_size2d, mp_cp, MPI_SUM, id_root, &
1697	& mp_comm_used, mp_ierr)
1698	if (mp_ierr /= 0) goto 600
1699	end if
1700
1701	! Receptor concentrations
1702	if (lroot) then
1703	call MPI_Reduce(MPI_IN_PLACE,creceptor,rcpt_size,mp_sp,MPI_SUM,id_root, &
1704	& mp_comm_used,mp_ierr)
1705	if (mp_ierr /= 0) goto 600
1706	else
1707	call MPI_Reduce(creceptor,creceptor,rcpt_size,mp_sp,MPI_SUM,id_root, &
1708	& mp_comm_used,mp_ierr)
1709	end if
1710
1711	if (mp_measure_time) call mpif_mtime('commtime',1)
1712
1713	goto 601
1714
1715	600 write(,) "mpi_mod> mp_ierr \= 0", mp_ierr
1716	stop
1717
1718	601 end subroutine mpif_tm_reduce_grid
1719
1720
1721	subroutine mpif_tm_reduce_grid_nest
1722	!***********************************************************************
1723	! Collect nested grids to PID 0, adding from all processes.
1724	!
1725	! NOTE
1726	! - Compiling with 'fcheck=all' (gfortran) will cause a run-time error
1727	! as wetgriduncn0 is only allocated for root process. Possibly valid
1728	! MPI code but invalid gfortran.
1729	!
1730	!***********************************************************************
1731	use com_mod
1732	use unc_mod
1733	use par_mod
1734
1735	implicit none
1736
1737	integer :: grid_size2d,grid_size3d
1738
1739	!**********************************************************************
1740
1741	grid_size3d=numxgridnnumygridnnumzgridmaxspec &
1742	& maxpointspec_actnclassuncmaxageclass
1743	grid_size2d=numxgridnnumygridnmaxspec* &
1744	& maxpointspec_actnclassuncmaxageclass
1745
1746
1747	! Time for MPI communications
1748	if (mp_measure_time) call mpif_mtime('commtime',0)
1749
1750	! Using a separate grid (gridunc0) for received values, for debugging
1751	! call MPI_Reduce(griduncn, griduncn0, grid_size3d, mp_sp, MPI_SUM, id_root, &
1752	! & mp_comm_used, mp_ierr)
1753	! if (mp_ierr /= 0) goto 600
1754
1755	! Using in-place reduction
1756	if (lroot) then
1757	call MPI_Reduce(MPI_IN_PLACE, griduncn, grid_size3d, mp_sp, MPI_SUM, id_root, &
1758	& mp_comm_used, mp_ierr)
1759	if (mp_ierr /= 0) goto 600
1760	else
1761	call MPI_Reduce(griduncn, griduncn, grid_size3d, mp_sp, MPI_SUM, id_root, &
1762	& mp_comm_used, mp_ierr)
1763	end if
1764
1765	if ((WETDEP).and.(ldirect.gt.0)) then
1766	call MPI_Reduce(wetgriduncn, wetgriduncn0, grid_size2d, mp_cp, MPI_SUM, id_root, &
1767	& mp_comm_used, mp_ierr)
1768	if (mp_ierr /= 0) goto 600
1769	end if
1770
1771	if ((DRYDEP).and.(ldirect.gt.0)) then
1772	call MPI_Reduce(drygriduncn, drygriduncn0, grid_size2d, mp_cp, MPI_SUM, id_root, &
1773	& mp_comm_used, mp_ierr)
1774	if (mp_ierr /= 0) goto 600
1775	end if
1776
1777	if (mp_measure_time) call mpif_mtime('commtime',1)
1778
1779	goto 601
1780
1781	600 write(,) "mpi_mod> mp_ierr \= 0", mp_ierr
1782	stop
1783
1784	601 end subroutine mpif_tm_reduce_grid_nest
1785
1786
1787	subroutine mpif_mtime(ident,imode)
1788	!***********************************************************************
1789	! Measure CPU/Wall time in various parts of the code
1790	!
1791	! VARIABLES
1792	! ident character, identifies routine to measure
1793	! imode integer, 0:start clock(s) 1: stop clock(s)
1794	!
1795	!***********************************************************************
1796	implicit none
1797
1798	character(LEN=*), intent(in) :: ident
1799	integer, intent(in) :: imode
1800
1801	!***********************************************************************
1802
1803	select case(ident)
1804
1805	case ('timemanager')
1806	if (imode.eq.0) then
1807	call cpu_time(tm_tot_beg)
1808	else
1809	call cpu_time(tm_tot_end)
1810	tm_tot_total = tm_tot_total + (tm_tot_end-tm_tot_beg)
1811	end if
1812
1813	case ('wetdepo')
1814	if (imode.eq.0) then
1815	mp_wetdepo_wtime_beg = mpi_wtime()
1816	call cpu_time(mp_wetdepo_time_beg)
1817	else
1818	mp_wetdepo_wtime_end = mpi_wtime()
1819	call cpu_time(mp_wetdepo_time_end)
1820
1821	mp_wetdepo_wtime_total = mp_wetdepo_wtime_total + &
1822	&(mp_wetdepo_wtime_end - mp_wetdepo_wtime_beg)
1823	mp_wetdepo_time_total = mp_wetdepo_time_total + &
1824	&(mp_wetdepo_time_end - mp_wetdepo_time_beg)
1825	end if
1826
1827	case ('advance')
1828	if (imode.eq.0) then
1829	mp_advance_wtime_beg = mpi_wtime()
1830	else
1831	mp_advance_wtime_end = mpi_wtime()
1832
1833	mp_advance_wtime_total = mp_advance_wtime_total + &
1834	&(mp_advance_wtime_end - mp_advance_wtime_beg)
1835	end if
1836
1837	case ('getfields')
1838	if (imode.eq.0) then
1839	mp_getfields_wtime_beg = mpi_wtime()
1840	call cpu_time(mp_getfields_time_beg)
1841	else
1842	mp_getfields_wtime_end = mpi_wtime()
1843	call cpu_time(mp_getfields_time_end)
1844
1845	mp_getfields_wtime_total = mp_getfields_wtime_total + &
1846	&(mp_getfields_wtime_end - mp_getfields_wtime_beg)
1847	mp_getfields_time_total = mp_getfields_time_total + &
1848	&(mp_getfields_time_end - mp_getfields_time_beg)
1849	end if
1850
1851	case ('partloop1')
1852	if (imode.eq.0) then
1853	call cpu_time(tm_nploop_beg)
1854	else
1855	call cpu_time(tm_nploop_end)
1856	tm_nploop_total = tm_nploop_total + (tm_nploop_end - tm_nploop_beg)
1857	end if
1858
1859	case ('conccalc')
1860	if (imode.eq.0) then
1861	call cpu_time(mp_conccalc_time_beg)
1862	else
1863	call cpu_time(mp_conccalc_time_end)
1864	mp_conccalc_time_total = mp_conccalc_time_total + mp_conccalc_time_end - &
1865	&mp_conccalc_time_beg
1866	end if
1867
1868	case ('rootonly')
1869	if (imode.eq.0) then
1870	call cpu_time(mp_root_time_beg)
1871	mp_root_wtime_beg = mpi_wtime()
1872	else
1873	call cpu_time(mp_root_time_end)
1874	mp_root_wtime_end = mpi_wtime()
1875	mp_root_time_total = mp_root_time_total + &
1876	&(mp_root_time_end - mp_root_time_beg)
1877	mp_root_wtime_total = mp_root_wtime_total + &
1878	&(mp_root_wtime_end - mp_root_wtime_beg)
1879	end if
1880
1881	case ('iotime')
1882	if (imode.eq.0) then
1883	mp_io_wtime_beg = mpi_wtime()
1884	call cpu_time(mp_io_time_beg)
1885	else
1886	mp_io_wtime_end = mpi_wtime()
1887	call cpu_time(mp_io_time_end)
1888
1889	mp_io_wtime_total = mp_io_wtime_total + (mp_io_wtime_end - &
1890	& mp_io_wtime_beg)
1891	mp_io_time_total = mp_io_time_total + (mp_io_time_end - &
1892	& mp_io_time_beg)
1893	end if
1894
1895	case ('verttransform')
1896	if (imode.eq.0) then
1897	mp_vt_wtime_beg = mpi_wtime()
1898	call cpu_time(mp_vt_time_beg)
1899	else
1900	mp_vt_wtime_end = mpi_wtime()
1901	call cpu_time(mp_vt_time_end)
1902
1903	mp_vt_wtime_total = mp_vt_wtime_total + (mp_vt_wtime_end - &
1904	& mp_vt_wtime_beg)
1905	mp_vt_time_total = mp_vt_time_total + (mp_vt_time_end - &
1906	& mp_vt_time_beg)
1907	end if
1908
1909	case ('readwind')
1910	if (imode.eq.0) then
1911	call cpu_time(mp_readwind_time_beg)
1912	mp_readwind_wtime_beg = mpi_wtime()
1913	else
1914	call cpu_time(mp_readwind_time_end)
1915	mp_readwind_wtime_end = mpi_wtime()
1916
1917	mp_readwind_time_total = mp_readwind_time_total + &
1918	&(mp_readwind_time_end - mp_readwind_time_beg)
1919	mp_readwind_wtime_total = mp_readwind_wtime_total + &
1920	&(mp_readwind_wtime_end - mp_readwind_wtime_beg)
1921	end if
1922
1923	case ('commtime')
1924	if (imode.eq.0) then
1925	call cpu_time(mp_comm_time_beg)
1926	mp_comm_wtime_beg = mpi_wtime()
1927	else
1928	call cpu_time(mp_comm_time_end)
1929	mp_comm_wtime_end = mpi_wtime()
1930	mp_comm_time_total = mp_comm_time_total + &
1931	&(mp_comm_time_end - mp_comm_time_beg)
1932	mp_comm_wtime_total = mp_comm_wtime_total + &
1933	&(mp_comm_wtime_end - mp_comm_wtime_beg)
1934	end if
1935
1936	case ('flexpart')
1937	if (imode.eq.0) then
1938	mp_total_wtime_beg=mpi_wtime()
1939	else
1940	mp_total_wtime_end=mpi_wtime()
1941	mp_total_wtime_total = mp_total_wtime_end-mp_total_wtime_beg
1942	end if
1943
1944	case default
1945	write(,) 'mpi_mod::mpif_mtime> WARNING: unknown case identifier'
1946
1947	end select
1948
1949
1950	end subroutine mpif_mtime
1951
1952
1953	subroutine mpif_finalize
1954	!***********************************************************************
1955	! Finalize MPI
1956	! Optionally print detailed time diagnostics
1957	!***********************************************************************
1958	implicit none
1959
1960	integer :: ip,j,r
1961
1962	!***********************************************************************
1963
1964	IF (mp_measure_time) THEN
1965	do ip=0, mp_np-1
1966	call MPI_BARRIER(MPI_COMM_WORLD, mp_ierr)
1967
1968	if (ip == mp_pid) then
1969	write(*,FMT='(72("#"))')
1970	write(*,FMT='(A60,I3)') 'STATISTICS FOR MPI PROCESS:', mp_pid
1971	if (ip == 0) then
1972	write(*,FMT='(A60,TR1,F9.2)') 'TOTAL CPU TIME FOR ROOT-ONLY (PID 0) &
1973	&SECTIONS: ', mp_root_time_total
1974	write(*,FMT='(A60,TR1,F9.2)') 'TOTAL WALL TIME FOR ROOT-ONLY (PID 0) &
1975	&SECTIONS:', mp_root_wtime_total
1976	end if
1977	write(*,FMT='(A60,TR1,F9.2)') 'TOTAL WALL TIME FOR FLEXPART: ' &
1978	&, mp_total_wtime_total
1979	write(*,FMT='(A60,TR1,F9.2)') 'TOTAL CPU TIME FOR MPI COMMUNICATIONS:',&
1980	& mp_comm_time_total
1981	write(*,FMT='(A60,TR1,F9.2)') 'TOTAL WALL TIME FOR MPI COMMUNICATIONS:',&
1982	& mp_comm_wtime_total
1983	write(*,FMT='(A60,TR1,F9.2)') 'TOTAL CPU TIME FOR MPI BARRIERS:',&
1984	& mp_barrier_time_total
1985	write(*,FMT='(A60,TR1,F9.2)') 'TOTAL WALL TIME FOR MPI BARRIERS:',&
1986	& mp_barrier_wtime_total
1987	write(*,FMT='(A60,TR1,F9.2)') 'TOTAL CPU TIME FOR TIMEMANAGER:',&
1988	& tm_tot_total
1989	write(*,FMT='(A60,TR1,F9.2)') 'TOTAL CPU TIME FOR TIMEMANAGER/NUMPART LOOP:',&
1990	& tm_nploop_total
1991	write(*,FMT='(A60,TR1,F9.2)') 'TOTAL WALL TIME FOR ADVANCE:',&
1992	& mp_advance_wtime_total
1993	write(*,FMT='(A60,TR1,F9.2)') 'TOTAL WALL TIME FOR GETFIELDS:',&
1994	& mp_getfields_wtime_total
1995	write(*,FMT='(A60,TR1,F9.2)') 'TOTAL CPU TIME FOR GETFIELDS:',&
1996	& mp_getfields_time_total
1997	write(*,FMT='(A60,TR1,F9.2)') 'TOTAL WALL TIME FOR READWIND:',&
1998	& mp_readwind_wtime_total
1999	write(*,FMT='(A60,TR1,F9.2)') 'TOTAL CPU TIME FOR READWIND:',&
2000	& mp_readwind_time_total
2001	write(*,FMT='(A60,TR1,F9.2)') 'TOTAL WALL TIME FOR FILE IO:',&
2002	& mp_io_wtime_total
2003	write(*,FMT='(A60,TR1,F9.2)') 'TOTAL CPU TIME FOR FILE IO:',&
2004	& mp_io_time_total
2005	write(*,FMT='(A60,TR1,F9.2)') 'TOTAL WALL TIME FOR WETDEPO:',&
2006	& mp_wetdepo_wtime_total
2007	write(*,FMT='(A60,TR1,F9.2)') 'TOTAL CPU TIME FOR WETDEPO:',&
2008	& mp_wetdepo_time_total
2009	write(*,FMT='(A60,TR1,F9.2)') 'TOTAL WALL TIME FOR CONCCALC:',&
2010	& mp_conccalc_time_total
2011	! write(*,FMT='(A60,TR1,F9.2)') 'TOTAL WALL TIME FOR VERTTRANSFORM:',&
2012	! & mp_vt_wtime_total
2013	! write(*,FMT='(A60,TR1,F9.2)') 'TOTAL CPU TIME FOR VERTTRANSFORM:',&
2014	! & mp_vt_time_total
2015	! NB: the 'flush' function is possibly a gfortran-specific extension
2016	call flush()
2017	end if
2018	end do
2019	end if
2020
2021	! This call to barrier is for correctly formatting output
2022	call MPI_BARRIER(MPI_COMM_WORLD, mp_ierr)
2023
2024	if (lroot.and.mp_measure_time) then
2025	write(*,FMT='(72("#"))')
2026	WRITE(,) "To turn off output of time measurements, set "
2027	WRITE(,) " mp_measure_time=.false."
2028	WRITE(,) "in file mpi_mod.f90"
2029	write(*,FMT='(72("#"))')
2030	end if
2031
2032	! j=mp_pid*nvar_async
2033	! In the implementation with 3 fields, the processes may have posted
2034	! MPI_Irecv requests that should be cancelled here
2035	! if (.not.lmp_sync) then
2036	! r=mp_pid*nvar_async
2037	! do j=r,r+nvar_async-1
2038	! call MPI_Cancel(j,mp_ierr)
2039	! if (mp_ierr /= 0) write(,) '#### mpif_finalize::MPI_Cancel> ERROR ####'
2040	! end do
2041	! end if
2042
2043	call MPI_FINALIZE(mp_ierr)
2044	if (mp_ierr /= 0) then
2045	write(,) '#### mpif_finalize::MPI_FINALIZE> MPI ERROR ', mp_ierr, ' ####'
2046	stop
2047	end if
2048
2049
2050	end subroutine mpif_finalize
2051
2052
2053	subroutine get_lun(my_lun)
2054	!***********************************************************************
2055	! get_lun:
2056	! Starting from 100, get next free logical unit number
2057	!***********************************************************************
2058
2059	implicit none
2060
2061	integer, intent(inout) :: my_lun
2062	integer, save :: free_lun=100
2063	logical :: exists, iopen
2064
2065	!***********************************************************************
2066
2067	loop1: do
2068	inquire(UNIT=free_lun, EXIST=exists, OPENED=iopen)
2069	if (exists .and. .not.iopen) exit loop1
2070	free_lun = free_lun+1
2071	end do loop1
2072	my_lun = free_lun
2073
2074	end subroutine get_lun
2075
2076
2077	subroutine write_data_dbg(array_in, array_name, tstep, ident)
2078	!***********************************************************************
2079	! Write one-dimensional arrays to file (for debugging purposes)
2080	!***********************************************************************
2081	implicit none
2082
2083	real, intent(in), dimension(:) :: array_in
2084	integer, intent(in) :: tstep
2085	integer :: lios
2086	character(LEN=*), intent(in) :: ident, array_name
2087
2088	character(LEN=8) :: c_ts
2089	character(LEN=40) :: fn_1, fn_2
2090
2091	!***********************************************************************
2092
2093	write(c_ts, FMT='(I8.8,BZ)') tstep
2094	fn_1='-'//trim(adjustl(c_ts))//'-'//trim(ident)
2095	write(c_ts, FMT='(I2.2,BZ)') mp_np
2096	fn_2= trim(adjustl(array_name))//trim(adjustl(fn_1))//'-np'//trim(adjustl(c_ts))//'.dat'
2097
2098	call get_lun(dat_lun)
2099	open(UNIT=dat_lun, FILE=fn_2, IOSTAT=lios, ACTION='WRITE', &
2100	FORM='UNFORMATTED', STATUS='REPLACE')
2101	write(UNIT=dat_lun, IOSTAT=lios) array_in
2102	close(UNIT=dat_lun)
2103
2104	end subroutine write_data_dbg
2105
2106
2107	subroutine set_fields_synthetic()
2108	!*******************************************************************************
2109	! DESCRIPTION
2110	! Set all meteorological fields to synthetic (usually constant/homogeneous)
2111	! values.
2112	! Used for validation and error-checking
2113	!
2114	! NOTE
2115	! This version uses asynchronious communications.
2116	!
2117	! VARIABLES
2118	!
2119	!
2120	!
2121	!*******************************************************************************
2122	use com_mod
2123
2124	implicit none
2125
2126	integer :: li=1, ui=2 ! wfmem indices (i.e, operate on entire field)
2127
2128	if (.not.lmp_sync) ui=3
2129
2130
2131	! Variables transferred at initialization only
2132	!*********************************************
2133	! readclouds=readclouds_
2134	oro(:,:)=0.0
2135	excessoro(:,:)=0.0
2136	lsm(:,:)=0.0
2137	xlanduse(:,:,:)=0.0
2138	! wftime
2139	! numbwf
2140	! nmixz
2141	! height
2142
2143	! Time-varying fields:
2144	uu(:,:,:,li:ui) = 10.0
2145	vv(:,:,:,li:ui) = 0.0
2146	uupol(:,:,:,li:ui) = 10.0
2147	vvpol(:,:,:,li:ui)=0.0
2148	ww(:,:,:,li:ui)=0.
2149	tt(:,:,:,li:ui)=300.
2150	rho(:,:,:,li:ui)=1.3
2151	drhodz(:,:,:,li:ui)=.0
2152	tth(:,:,:,li:ui)=0.0
2153	qvh(:,:,:,li:ui)=1.0
2154	qv(:,:,:,li:ui)=1.0
2155
2156	pv(:,:,:,li:ui)=1.0
2157	clouds(:,:,:,li:ui)=0
2158
2159	clwc(:,:,:,li:ui)=0.0
2160	ciwc(:,:,:,li:ui)=0.0
2161
2162	! 2D fields
2163
2164	cloudsh(:,:,li:ui)=0
2165	vdep(:,:,:,li:ui)=0.0
2166	ps(:,:,:,li:ui)=1.0e5
2167	sd(:,:,:,li:ui)=0.0
2168	tcc(:,:,:,li:ui)=0.0
2169	tt2(:,:,:,li:ui)=300.
2170	td2(:,:,:,li:ui)=250.
2171	lsprec(:,:,:,li:ui)=0.0
2172	convprec(:,:,:,li:ui)=0.0
2173	ustar(:,:,:,li:ui)=1.0
2174	wstar(:,:,:,li:ui)=1.0
2175	hmix(:,:,:,li:ui)=10000.
2176	tropopause(:,:,:,li:ui)=10000.
2177	oli(:,:,:,li:ui)=0.01
2178
2179	end subroutine set_fields_synthetic
2180
2181	end module mpi_mod

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