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source: palm/trunk/SOURCE/cpulog_mod.f90 @ 4640

Last change on this file since 4640 was 4577, checked in by raasch, 4 years ago
further re-formatting to follow the PALM coding standard
Property svn:keywords set to `Id`
File size: 23.2 KB

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1	!> @file cpulog_mod.f90
2	!--------------------------------------------------------------------------------------------------!
3	! This file is part of the PALM model system.
4	!
5	! PALM is free software: you can redistribute it and/or modify it under the terms of the GNU General
6	! Public License as published by the Free Software Foundation, either version 3 of the License, or
7	! (at your option) any later version.
8	!
9	! PALM is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
10	! implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
11	! Public License for more details.
12	!
13	! You should have received a copy of the GNU General Public License along with PALM. If not, see
14	! <http://www.gnu.org/licenses/>.
15	!
16	! Copyright 1997-2020 Leibniz Universitaet Hannover
17	!------------------------------------------------------------------------------!
18	!
19	! Current revisions:
20	! -----------------
21	!
22	!
23	! Former revisions:
24	! -----------------
25	! $Id: cpulog_mod.f90 4577 2020-06-25 09:53:58Z suehring $
26	! further re-formatting concerning Fortran parameter variables
27	!
28	! 4559 2020-06-11 08:51:48Z raasch
29	! file re-formatted to follow the PALM coding standard
30	!
31	! 4549 2020-05-29 09:27:29Z raasch
32	! bugfix for r4539: values for min/max/rms stored in separate arrays
33	!
34	! 4539 2020-05-18 14:05:17Z raasch
35	! code re-structured,
36	! cpu time per grid point and timestep does not included initialization and spinup any more
37	!
38	! 4536 2020-05-17 17:24:13Z raasch
39	! restart I/O transfer speed added
40	!
41	! 4429 2020-02-27 15:24:30Z raasch
42	! bugfix: cpp-directives added for serial mode
43	!
44	! 4378 2020-01-16 13:22:48Z Giersch
45	! Format of rms output changed to allow values >= 100
46	!
47	! 4360 2020-01-07 11:25:50Z suehring
48	! Corrected "Former revisions" section
49	!
50	! 4015 2019-06-05 13:25:35Z raasch
51	! all reals changed to double precision in order to work with 32-bit working precision, otherwise
52	! calculated time intervals would mostly give zero
53	!
54	! 3885 2019-04-11 11:29:34Z kanani
55	! Changes related to global restructuring of location messages and introduction of additional debug
56	! messages
57	!
58	! 3655 2019-01-07 16:51:22Z knoop
59	! output format limited to a maximum line length of 80
60	!
61	! Revision 1.1 1997/07/24 11:12:29 raasch
62	! Initial revision
63	!
64	!
65	! Description:
66	! ------------
67	!> CPU-time measurements for any program part whatever. Results of the measurements are output at
68	!> the end of the run in local file CPU_MEASURES.
69	!>
70	!> To measure the CPU-time (better to say the wallclock time) of a specific code segment, two calls
71	!> of cpu_log have to be used as brackets in front and at the end of the segment:
72	!>
73	!> CALL cpu_log( log_point(n), 'any identifier', 'start' )
74	!> ... code segment ...
75	!> CALL cpu_log( log_point(n), 'any identifier', 'stop' )
76	!>
77	!> Parts of the code segment can be excluded from the measurement by additional call of cpu_log:
78	!>
79	!> ... first segment to be measured
80	!> CALL cpu_log( log_point(n), 'any identifier', 'pause' )
81	!> ... oart of segment to be excluded from measurement
82	!> CALL cpu_log( log_point(n), 'any identifier', 'continue' )
83	!> ... second segment to be mesasured
84	!>
85	!> n is an INTEGER within the interval [1,100] defining the id of the specific code segment,
86	!> 'any identifier' is a string describing the code segment to be measured. It can be freely chosen
87	!> and results will appear under this name in file CPU_MEASURES. ids can only be used once. If you
88	!> like to do a measurement of a new part of the code, please look for an id which is unused so far.
89	!>
90	!> runtime_parameters-parameter cpu_log_barrierwait can be used to set an MPI barrier at the
91	!> beginning of the measurement (modus 'start' or 'continue'), to avoid that idle times (due to MPI
92	!> calls in the code segment, which are waiting for other processes to be finished) affect the
93	!> measurements.
94	!> If barriers shall not be used at all, a fourth, optional parameter has to be
95	!> given:
96	!>
97	!> CALL cpu_log( ..., ..., 'start', cpu_log_nowait )
98	!>
99	!> Variable log_point should be used for non-overlapping code segments, and they should sum up to
100	!> the total cpu-time required by the complete run.
101	!> Variable log_point_s can be used for any other special (s) measurements.
102	!--------------------------------------------------------------------------------------------------!
103	MODULE cpulog
104
105
106	USE control_parameters, &
107	ONLY: message_string, nr_timesteps_this_run, restart_data_format_output, &
108	restart_file_size, run_description_header, synchronous_exchange, write_binary
109
110	USE indices, &
111	ONLY: ngp_3d, nx, ny, nz
112
113	USE kinds
114
115	USE pegrid
116
117	IMPLICIT NONE
118
119	PRIVATE
120	PUBLIC cpu_log, cpu_log_barrierwait, cpu_log_nowait, cpu_statistics, initial_wallclock_time, &
121	log_point, log_point_s
122
123	INTERFACE cpu_log
124	MODULE PROCEDURE cpu_log
125	END INTERFACE cpu_log
126
127	INTERFACE cpu_statistics
128	MODULE PROCEDURE cpu_statistics
129	END INTERFACE cpu_statistics
130
131	INTEGER(iwp), PARAMETER :: cpu_log_continue = 0 !<
132	INTEGER(iwp), PARAMETER :: cpu_log_pause = 1 !<
133	INTEGER(iwp), PARAMETER :: cpu_log_start = 2 !<
134	INTEGER(iwp), PARAMETER :: cpu_log_stop = 3 !<
135
136	LOGICAL, PARAMETER :: cpu_log_nowait = .FALSE. !<
137
138	LOGICAL :: cpu_log_barrierwait = .FALSE. !<
139
140	REAL(dp) :: initial_wallclock_time !<
141
142	TYPE logpoint
143	REAL(dp) :: isum !<
144	REAL(dp) :: ivect !<
145	REAL(dp) :: mean !<
146	REAL(dp) :: mtime !<
147	REAL(dp) :: mtimevec !<
148	REAL(dp) :: sum !<
149	REAL(dp) :: vector !<
150	INTEGER(iwp) :: counts !<
151	CHARACTER (LEN=25) :: place !<
152	END TYPE logpoint
153
154	TYPE(logpoint), DIMENSION(100) :: log_point = logpoint( 0.0_dp, 0.0_dp, 0.0_dp, 0.0_dp, &
155	0.0_dp, 0.0_dp, 0.0_dp, 0, ' ' )
156	TYPE(logpoint), DIMENSION(100) :: log_point_s = logpoint( 0.0_dp, 0.0_dp, 0.0_dp, 0.0_dp, &
157	0.0_dp, 0.0_dp, 0.0_dp, 0, ' ' )
158
159	SAVE
160
161	CONTAINS
162
163	!------------------------------------------------------------------------------!
164	! Description:
165	! ------------
166	!> @todo Missing subroutine description.
167	!------------------------------------------------------------------------------!
168	SUBROUTINE cpu_log( log_event, place, modus, barrierwait )
169
170	IMPLICIT NONE
171
172	CHARACTER (LEN=*) :: modus !<
173	CHARACTER (LEN=*) :: place !<
174
175	LOGICAL :: wait_allowed !<
176	LOGICAL, OPTIONAL :: barrierwait !<
177	LOGICAL, SAVE :: first = .TRUE. !<
178
179	REAL(dp) :: mtime = 0.0_dp !<
180	REAL(dp) :: mtimevec = 0.0_dp !<
181	TYPE(logpoint) :: log_event !<
182
183	INTEGER(idp) :: count !<
184	INTEGER(idp) :: count_rate !<
185
186
187	!
188	!-- Initialize and check, respectively, point of measurement
189	IF ( log_event%place == ' ' ) THEN
190	log_event%place = place
191	ELSEIF ( log_event%place /= place ) THEN
192	WRITE( message_string, * ) 'wrong argument expected: ', &
193	TRIM(log_event%place), ' given: ', TRIM( place )
194	CALL message( 'cpu_log', 'PA0174', 1, 2, 0, 6, 0 )
195	ENDIF
196
197	!
198	!-- Determine, if barriers are allowed to set
199	IF ( PRESENT( barrierwait ) ) THEN
200	wait_allowed = barrierwait
201	ELSE
202	wait_allowed = .TRUE.
203	ENDIF
204
205	!
206	!-- MPI barrier, if requested, in order to avoid measuring wait times
207	!-- caused by MPI routines waiting for other MPI routines of other
208	!-- PEs that have not yet finished
209	#if defined( __parallel )
210	IF ( cpu_log_barrierwait .AND. wait_allowed .AND. &
211	( modus == 'start' .OR. modus == 'continue' ) ) THEN
212	CALL MPI_BARRIER( comm2d, ierr )
213	ENDIF
214	#endif
215
216	!
217	!-- Take current time
218	CALL SYSTEM_CLOCK( count, count_rate )
219	mtime = REAL( count, KIND=dp ) / REAL( count_rate, KIND=dp )
220
221	!
222	!-- Start, stop or pause measurement
223	IF ( modus == 'start' .OR. modus == 'continue' ) THEN
224	log_event%mtime = mtime
225	log_event%mtimevec = mtimevec
226	ELSEIF ( modus == 'pause' ) THEN
227	IF ( ( mtime - log_event%mtime ) < 0.0 .AND. first ) THEN
228	WRITE( message_string, * ) 'negative time interval occured', &
229	'&PE',myid,' L=PAUSE "',TRIM(log_event%place), &
230	'" new=', mtime,' last=',log_event%mtime
231	CALL message( 'cpu_log', 'PA0176', 0, 1, -1, 6, 0 )
232	first = .FALSE.
233	ENDIF
234	log_event%isum = log_event%isum + mtime - log_event%mtime
235	log_event%ivect = log_event%ivect + mtimevec - log_event%mtimevec
236	ELSEIF ( modus == 'stop' ) THEN
237	IF ( ( mtime - log_event%mtime + log_event%isum ) < 0.0 .AND. first ) THEN
238	WRITE( message_string, * ) 'negative time interval occured', &
239	'&PE',myid,' L=STOP "',TRIM(log_event%place),'" new=', &
240	mtime,' last=',log_event%mtime,' isum=',log_event%isum
241	CALL message( 'cpu_log', 'PA0177', 0, 1, -1, 6, 0 )
242	first = .FALSE.
243	ENDIF
244	log_event%mtime = mtime - log_event%mtime + log_event%isum
245	log_event%mtimevec = mtimevec - log_event%mtimevec + log_event%ivect
246	log_event%sum = log_event%sum + log_event%mtime
247	IF ( log_event%sum < 0.0 .AND. first ) THEN
248	WRITE( message_string, * ) 'negative time interval occured', &
249	'&PE',myid,' L=STOP "',TRIM(log_event%place),'" sum=', &
250	log_event%sum,' mtime=',log_event%mtime
251	CALL message( 'cpu_log', 'PA0178', 0, 1, -1, 6, 0 )
252	first = .FALSE.
253	ENDIF
254	log_event%vector = log_event%vector + log_event%mtimevec
255	log_event%counts = log_event%counts + 1
256	log_event%isum = 0.0_dp
257	log_event%ivect = 0.0_dp
258	ELSE
259	message_string = 'unknown modus of time measurement: ' // TRIM( modus )
260	CALL message( 'cpu_log', 'PA0179', 0, 1, -1, 6, 0 )
261	ENDIF
262
263	END SUBROUTINE cpu_log
264
265
266	!------------------------------------------------------------------------------!
267	! Description:
268	! ------------
269	!> Analysis and output of the cpu-times measured. All PE results are collected
270	!> on PE0 in order to calculate the mean cpu-time over all PEs and other
271	!> statistics. The output is sorted according to the amount of cpu-time consumed
272	!> and output on PE0.
273	!------------------------------------------------------------------------------!
274
275	SUBROUTINE cpu_statistics
276
277	IMPLICIT NONE
278
279	INTEGER(iwp) :: i !<
280	INTEGER(iwp) :: ii(1) !<
281	#if defined( __parallel )
282	INTEGER(iwp) :: iii !<
283	INTEGER(iwp) :: sender !<
284	#endif
285	REAL(dp) :: average_cputime !<
286	REAL(dp), SAVE :: norm = 1.0_dp !<
287	REAL(dp), DIMENSION(:), ALLOCATABLE :: pe_max !<
288	REAL(dp), DIMENSION(:), ALLOCATABLE :: pe_max_s !<
289	REAL(dp), DIMENSION(:), ALLOCATABLE :: pe_min !<
290	REAL(dp), DIMENSION(:), ALLOCATABLE :: pe_min_s !<
291	REAL(dp), DIMENSION(:), ALLOCATABLE :: pe_rms !<
292	REAL(dp), DIMENSION(:), ALLOCATABLE :: pe_rms_s !<
293	REAL(dp), DIMENSION(:), ALLOCATABLE :: pe_tmp !<
294	REAL(dp), DIMENSION(:), ALLOCATABLE :: pe_tmp_s !<
295	REAL(dp), DIMENSION(:), ALLOCATABLE :: sum !<
296	REAL(dp), DIMENSION(:), ALLOCATABLE :: sum_s !<
297	REAL(dp), DIMENSION(:,:), ALLOCATABLE :: pe_log_points !<
298	REAL(dp), DIMENSION(:,:), ALLOCATABLE :: pe_log_points_s !<
299
300
301	CALL location_message( 'calculating cpu statistics', 'start' )
302
303	!
304	!-- Compute CPU-times in seconds for the global non-overlapping measurements.
305	log_point%mtime = log_point%mtime / norm
306	log_point%sum = log_point%sum / norm
307	log_point%vector = log_point%vector / norm
308	WHERE ( log_point%counts /= 0 )
309	log_point%mean = log_point%sum / log_point%counts
310	END WHERE
311
312
313	!
314	!-- Collect CPU-times from all PEs and calculate statistics
315	IF ( myid == 0 ) THEN
316	!
317	!-- Allocate and initialize temporary arrays needed for statistics
318	ALLOCATE( pe_max( SIZE( log_point ) ), pe_min( SIZE( log_point ) ), &
319	pe_rms( SIZE( log_point ) ), pe_tmp( SIZE( log_point ) ), &
320	pe_log_points( SIZE( log_point ), 0:numprocs-1 ) )
321	pe_min = log_point%sum
322	pe_max = log_point%sum ! need to be set in case of 1 PE
323	pe_rms = 0.0_dp
324	pe_tmp = 0.0_dp
325
326	#if defined( __parallel )
327	!
328	!-- Receive data from all PEs
329	DO i = 1, numprocs-1
330	CALL MPI_RECV( pe_tmp(1), SIZE( log_point ), MPI_DOUBLE_PRECISION, i, i, comm2d, &
331	status, ierr )
332	sender = status(MPI_SOURCE)
333	pe_log_points(:,sender) = pe_tmp
334	ENDDO
335	pe_log_points(:,0) = log_point%sum ! Results from PE0
336	!
337	!-- Calculate mean of all PEs, store it on log_point%sum
338	!-- and find minimum and maximum
339	DO iii = 1, SIZE( log_point )
340	DO i = 1, numprocs-1
341	log_point(iii)%sum = log_point(iii)%sum + pe_log_points(iii,i)
342	pe_min(iii) = MIN( pe_min(iii), pe_log_points(iii,i) )
343	pe_max(iii) = MAX( pe_max(iii), pe_log_points(iii,i) )
344	ENDDO
345	log_point(iii)%sum = log_point(iii)%sum / numprocs
346	!
347	!-- Calculate rms
348	DO i = 0, numprocs-1
349	pe_rms(iii) = pe_rms(iii) + ( pe_log_points(iii,i) - log_point(iii)%sum )**2
350	ENDDO
351	pe_rms(iii) = SQRT( pe_rms(iii) / numprocs )
352	ENDDO
353	ELSE
354	!
355	!-- Send data to PE0 (pe_max is used as temporary storage to send
356	!-- the data in order to avoid sending the data type log)
357	ALLOCATE( pe_max( SIZE( log_point ) ) )
358	pe_max = log_point%sum
359	CALL MPI_SEND( pe_max(1), SIZE( log_point ), MPI_DOUBLE_PRECISION, 0, myid, comm2d, ierr )
360	#endif
361
362	ENDIF
363
364	!
365	!-- The same procedure again for the special measurements.
366	!
367	!-- Compute cpu-times in seconds
368	log_point_s%mtime = log_point_s%mtime / norm
369	log_point_s%sum = log_point_s%sum / norm
370	log_point_s%vector = log_point_s%vector / norm
371	WHERE ( log_point_s%counts /= 0 )
372	log_point_s%mean = log_point_s%sum / log_point_s%counts
373	END WHERE
374
375	!
376	!-- Collect CPU-times from all PEs and calculate statistics
377	#if defined( __parallel )
378	!
379	!-- Set barrier in order to avoid that PE0 receives log_point_s-data
380	!-- while still busy with receiving log_point-data (see above)
381	CALL MPI_BARRIER( comm2d, ierr )
382	#endif
383	IF ( myid == 0 ) THEN
384	!
385	!-- Allocate and initialize temporary arrays needed for statistics
386	ALLOCATE( pe_max_s( SIZE( log_point_s ) ), pe_min_s( SIZE( log_point_s ) ), &
387	pe_rms_s( SIZE( log_point_s ) ), pe_tmp_s( SIZE( log_point_s ) ), &
388	pe_log_points_s( SIZE( log_point_s ), 0:numprocs-1 ) )
389	pe_min_s = log_point_s%sum
390	pe_max_s = log_point_s%sum ! need to be set in case of 1 PE
391	pe_rms_s = 0.0_dp
392
393	#if defined( __parallel )
394	!
395	!-- Receive data from all PEs
396	DO i = 1, numprocs-1
397	CALL MPI_RECV( pe_tmp_s(1), SIZE( log_point_s ), MPI_DOUBLE_PRECISION, &
398	MPI_ANY_SOURCE, MPI_ANY_TAG, comm2d, status, ierr )
399	sender = status(MPI_SOURCE)
400	pe_log_points_s(:,sender) = pe_tmp_s
401	ENDDO
402	pe_log_points_s(:,0) = log_point_s%sum ! Results from PE0
403	!
404	!-- Calculate mean of all PEs, store it on log_point_s%sum
405	!-- and find minimum and maximum
406	DO iii = 1, SIZE( log_point_s )
407	DO i = 1, numprocs-1
408	log_point_s(iii)%sum = log_point_s(iii)%sum + pe_log_points_s(iii,i)
409	pe_min_s(iii) = MIN( pe_min_s(iii), pe_log_points_s(iii,i) )
410	pe_max_s(iii) = MAX( pe_max_s(iii), pe_log_points_s(iii,i) )
411	ENDDO
412	log_point_s(iii)%sum = log_point_s(iii)%sum / numprocs
413	!
414	!-- Calculate rms
415	DO i = 0, numprocs-1
416	pe_rms_s(iii) = pe_rms_s(iii) + ( pe_log_points_s(iii,i) - log_point_s(iii)%sum )**2
417	ENDDO
418	pe_rms_s(iii) = SQRT( pe_rms_s(iii) / numprocs )
419	ENDDO
420	ELSE
421	!
422	!-- Send data to PE0 (pe_max is used as temporary storage to send
423	!-- the data in order to avoid sending the data type log)
424	ALLOCATE( pe_max_s( SIZE( log_point_s ) ) )
425	pe_max_s = log_point_s%sum
426	CALL MPI_SEND( pe_max_s(1), SIZE( log_point_s ), MPI_DOUBLE_PRECISION, 0, 0, comm2d, &
427	ierr )
428	#endif
429
430	ENDIF
431	!
432	!-- Write CPU-times for the non-overlapping measurements.
433	IF ( myid == 0 ) THEN
434	!
435	!-- Re-store sums
436	ALLOCATE( sum( SIZE( log_point ) ) )
437	WHERE ( log_point%counts /= 0 )
438	sum = log_point%sum
439	ELSEWHERE
440	sum = -1.0_dp
441	ENDWHERE
442
443	!
444	!-- Get total time in order to calculate CPU-time per gridpoint and timestep.
445	!-- Time for initialization (2) and spinup (41) are not included here!
446	IF ( nr_timesteps_this_run /= 0 ) THEN
447	average_cputime = log_point_s(10)%sum / REAL( ngp_3d(0), KIND=dp ) / &
448	REAL( nr_timesteps_this_run, KIND=dp ) * 1E6_dp ! in micro-sec
449	ELSE
450	average_cputime = -1.0_dp
451	ENDIF
452
453	!
454	!-- Write cpu-times sorted by size
455	CALL check_open( 18 )
456	#if defined( __parallel )
457	WRITE ( 18, 100 ) TRIM( run_description_header ), numprocs * threads_per_task, &
458	pdims(1), pdims(2), threads_per_task, nx+1, ny+1, nz, &
459	nr_timesteps_this_run, average_cputime
460
461	WRITE ( 18, 110 )
462	#else
463	WRITE ( 18, 100 ) TRIM( run_description_header ), numprocs * threads_per_task, 1, 1, &
464	threads_per_task, nx+1, ny+1, nz, nr_timesteps_this_run, &
465	average_cputime
466
467	WRITE ( 18, 110 )
468	#endif
469	DO
470	ii = MAXLOC( sum )
471	i = ii(1)
472	IF ( sum(i) /= -1.0_dp ) THEN
473	WRITE ( 18, 102 ) log_point(i)%place, log_point(i)%sum, &
474	log_point(i)%sum / log_point(1)%sum * 100.0_dp, &
475	log_point(i)%counts, pe_min(i), pe_max(i), pe_rms(i)
476	sum(i) = -1.0_dp
477	ELSE
478	EXIT
479	ENDIF
480	ENDDO
481	ENDIF
482
483	!
484	!-- Write CPU-times for special measurements.
485	IF ( myid == 0 ) THEN
486	!
487	!-- Re-store sums
488	ALLOCATE( sum_s( SIZE( log_point_s ) ) )
489	WHERE ( log_point_s%counts /= 0 )
490	sum_s = log_point_s%sum
491	ELSEWHERE
492	sum_s = -1.0_dp
493	ENDWHERE
494
495	!
496	!-- Write cpu-times sorted by size
497	WRITE ( 18, 101 )
498	DO
499	ii = MAXLOC( sum_s )
500	i = ii(1)
501	IF ( sum_s(i) /= -1.0_dp ) THEN
502	WRITE ( 18, 102 ) log_point_s(i)%place, log_point_s(i)%sum, &
503	log_point_s(i)%sum / log_point(1)%sum * 100.0_dp, &
504	log_point_s(i)%counts, pe_min_s(i), pe_max_s(i), pe_rms_s(i)
505	sum_s(i) = -1.0_dp
506	ELSE
507	EXIT
508	ENDIF
509	ENDDO
510
511	!
512	!-- Output of handling of MPI operations
513	IF ( collective_wait ) THEN
514	WRITE ( 18, 103 )
515	ELSE
516	WRITE ( 18, 104 )
517	ENDIF
518	IF ( cpu_log_barrierwait ) WRITE ( 18, 111 )
519	IF ( synchronous_exchange ) THEN
520	WRITE ( 18, 105 )
521	ELSE
522	WRITE ( 18, 106 )
523	ENDIF
524	!
525	!-- Output of restart data transfer speed
526	IF ( write_binary .AND. restart_data_format_output(1:3) == 'mpi' ) THEN
527	WRITE ( 18, 107 ) restart_file_size, restart_file_size / log_point(22)%sum
528	ENDIF
529	!
530	!-- Empty lines in order to create a gap to the results from the next restart run
531	WRITE ( 18, 108 )
532
533	!
534	!-- Unit 18 is not needed anymore
535	CALL close_file( 18 )
536
537	ENDIF
538
539	CALL location_message( 'calculating cpu statistics', 'finished' )
540
541
542	100 FORMAT (A/11('-')//'CPU measures for ',I5,' PEs (',I5,'(x) * ',I5,'(y', &
543	&') tasks *',I5,' threads):'// &
544	'gridpoints (x/y/z): ',20X,I5,' * ',I5,' * ',I5/ &
545	'nr of timesteps: ',22X,I6/ &
546	'cpu time per grid point and timestep: ',5X,F8.5,' * 10**-6 s')
547
548	101 FORMAT (/'special measures:'/ &
549	&'-----------------------------------------------------------', &
550	&'---------------------')
551
552	102 FORMAT (A25,2X,F9.3,2X,F7.2,1X,I7,2(1X,F9.3),1X,F6.2)
553	103 FORMAT (/'Barriers are set in front of collective operations')
554	104 FORMAT (/'No barriers are set in front of collective operations')
555	105 FORMAT (/'Exchange of ghostpoints via MPI_SENDRCV')
556	106 FORMAT (/'Exchange of ghostpoints via MPI_ISEND/MPI_IRECV')
557	107 FORMAT (/'Restart file size: ',F12.1,' MByte'/ &
558	&'I/O transfer speed: ',F12.1,' MByte / sec')
559	108 FORMAT (//)
560	110 FORMAT ('------------------------------------------------------------', &
561	&'----------'// &
562	&'place: mean counts ', &
563	&' min max rms'/ &
564	&' sec. % ', &
565	&'sec. sec. sec.'/ &
566	&'-----------------------------------------------------------', &
567	&'---------------------')
568	111 FORMAT (/'Barriers are set at beginning (start/continue) of measurements')
569
570	END SUBROUTINE cpu_statistics
571
572	END MODULE cpulog

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