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source: palm/trunk/SOURCE/cpulog_mod.f90 @ 4194

Last change on this file since 4194 was 4182, checked in by scharf, 5 years ago
corrected "Former revisions" section minor formatting in "Former revisions" section added "Author" section
Property svn:keywords set to `Id`
File size: 20.9 KB

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[1850]	1	!> @file cpulog_mod.f90
[2000]	2	!------------------------------------------------------------------------------!
[2696]	3	! This file is part of the PALM model system.
[1036]	4	!
[2000]	5	! PALM is free software: you can redistribute it and/or modify it under the
	6	! terms of the GNU General Public License as published by the Free Software
	7	! Foundation, either version 3 of the License, or (at your option) any later
	8	! version.
[1036]	9	!
	10	! PALM is distributed in the hope that it will be useful, but WITHOUT ANY
	11	! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
	12	! A PARTICULAR PURPOSE. See the GNU General Public License for more details.
	13	!
	14	! You should have received a copy of the GNU General Public License along with
	15	! PALM. If not, see <http://www.gnu.org/licenses/>.
	16	!
[3655]	17	! Copyright 1997-2019 Leibniz Universitaet Hannover
[2000]	18	!------------------------------------------------------------------------------!
[1036]	19	!
[254]	20	! Current revisions:
[1]	21	! -----------------
[1403]	22	!
[3049]	23	!
[1321]	24	! Former revisions:
	25	! -----------------
	26	! $Id: cpulog_mod.f90 4182 2019-08-22 15:20:23Z suehring $
[4182]	27	! Corrected "Former revisions" section
	28	!
	29	! 4015 2019-06-05 13:25:35Z raasch
[4015]	30	! all reals changed to double precision in order to work with 32-bit working precision,
	31	! otherwise calculated time intervals would mostly give zero
	32	!
	33	! 3885 2019-04-11 11:29:34Z kanani
[3885]	34	! Changes related to global restructuring of location messages and introduction
	35	! of additional debug messages
	36	!
	37	! 3655 2019-01-07 16:51:22Z knoop
[3483]	38	! output format limited to a maximum line length of 80
[2716]	39	!
[4182]	40	! Revision 1.1 1997/07/24 11:12:29 raasch
	41	! Initial revision
	42	!
	43	!
[1]	44	! Description:
	45	! ------------
[1682]	46	!> CPU-time measurements for any program part whatever. Results of the
	47	!> measurements are output at the end of the run in local file CPU_MEASURES.
	48	!>
	49	!> To measure the CPU-time (better to say the wallclock time) of a specific code
	50	!> segment, two calls of cpu_log have to be used as brackets in front and at the
	51	!> end of the segment:
	52	!>
	53	!> CALL cpu_log( log_point(n), 'any identifier', 'start' )
	54	!> ... code segment ...
	55	!> CALL cpu_log( log_point(n), 'any identifier', 'stop' )
	56	!>
	57	!> Parts of the code segment can be excluded from the measurement by additional
	58	!> call of cpu_log:
	59	!>
	60	!> ... first segment to be measured
	61	!> CALL cpu_log( log_point(n), 'any identifier', 'pause' )
	62	!> ... oart of segment to be excluded from measurement
	63	!> CALL cpu_log( log_point(n), 'any identifier', 'continue' )
	64	!> ... second segment to be mesasured
	65	!>
	66	!> n is an INTEGER within the interval [1,100] defining the id of the specific
	67	!> code segment, 'any identifier' is a string describing the code segment to be
	68	!> measured. It can be freely chosen and results will appear under this name in
	69	!> file CPU_MEASURES. ids can only be used once. If you like to do a
	70	!> measurement of a new part of the code, please look for an id which is unused
	71	!> ao far.
	72	!>
[2932]	73	!> runtime_parameters-parameter cpu_log_barrierwait can be used to set an MPI
	74	!> barrier at the beginning of the measurement (modus 'start' or 'continue'),
	75	!> to avoid that idle times (due to MPI calls in the code segment, which are
[1682]	76	!> waiting for other processes to be finished) affect the measurements.
	77	!> If barriers shall not be used at all, a fourth, optional parameter has to be
	78	!> given:
	79	!>
	80	!> CALL cpu_log( ..., ..., 'start', cpu_log_nowait )
	81	!>
	82	!> Variable log_point should be used for non-overlapping code segments, and they
	83	!> should sum up to the total cpu-time required by the complete run.
	84	!> Variable log_point_s can be used for any other special (s) measurements.
[3]	85	!------------------------------------------------------------------------------!
[1682]	86	MODULE cpulog
	87
[1]	88
[4015]	89	USE control_parameters, &
	90	ONLY: message_string, nr_timesteps_this_run, run_description_header, synchronous_exchange
[1320]	91
[4015]	92	USE indices, &
[2266]	93	ONLY: ngp_3d, nx, ny, nz
[1320]	94
	95	USE kinds
	96
[1]	97	USE pegrid
	98
	99	IMPLICIT NONE
	100
[1318]	101	PRIVATE
[4015]	102	PUBLIC cpu_log, cpu_log_barrierwait, cpu_log_nowait, cpu_statistics, initial_wallclock_time, &
	103	log_point, log_point_s
[1]	104
[1318]	105	INTERFACE cpu_log
	106	MODULE PROCEDURE cpu_log
	107	END INTERFACE cpu_log
	108
	109	INTERFACE cpu_statistics
	110	MODULE PROCEDURE cpu_statistics
	111	END INTERFACE cpu_statistics
	112
[1682]	113	INTEGER(iwp), PARAMETER :: cpu_log_continue = 0 !<
	114	INTEGER(iwp), PARAMETER :: cpu_log_pause = 1 !<
	115	INTEGER(iwp), PARAMETER :: cpu_log_start = 2 !<
	116	INTEGER(iwp), PARAMETER :: cpu_log_stop = 3 !<
[1318]	117
[1682]	118	LOGICAL :: cpu_log_barrierwait = .FALSE. !<
	119	LOGICAL, PARAMETER :: cpu_log_nowait = .FALSE. !<
[1318]	120
[4015]	121	REAL(dp) :: initial_wallclock_time !<
[1318]	122
	123	TYPE logpoint
[4015]	124	REAL(dp) :: isum !<
	125	REAL(dp) :: ivect !<
	126	REAL(dp) :: mean !<
	127	REAL(dp) :: mtime !<
	128	REAL(dp) :: mtimevec !<
	129	REAL(dp) :: sum !<
	130	REAL(dp) :: vector !<
[1682]	131	INTEGER(iwp) :: counts !<
[1931]	132	CHARACTER (LEN=25) :: place !<
[1318]	133	END TYPE logpoint
	134
[4015]	135	TYPE(logpoint), DIMENSION(100) :: log_point = logpoint( 0.0_dp, 0.0_dp, 0.0_dp, 0.0_dp, &
	136	0.0_dp, 0.0_dp, 0.0_dp, 0, ' ' )
	137	TYPE(logpoint), DIMENSION(100) :: log_point_s = logpoint( 0.0_dp, 0.0_dp, 0.0_dp, 0.0_dp, &
	138	0.0_dp, 0.0_dp, 0.0_dp, 0, ' ' )
[1318]	139
	140	SAVE
	141
	142	CONTAINS
	143
[1682]	144	!------------------------------------------------------------------------------!
	145	! Description:
	146	! ------------
	147	!> @todo Missing subroutine description.
	148	!------------------------------------------------------------------------------!
[1318]	149	SUBROUTINE cpu_log( log_event, place, modus, barrierwait )
	150
	151	IMPLICIT NONE
	152
[1682]	153	CHARACTER (LEN=*) :: modus !<
	154	CHARACTER (LEN=*) :: place !<
[1320]	155
[1682]	156	LOGICAL :: wait_allowed !<
	157	LOGICAL, OPTIONAL :: barrierwait !<
	158	LOGICAL, SAVE :: first = .TRUE. !<
[1320]	159
[4015]	160	REAL(dp) :: mtime = 0.0_dp !<
	161	REAL(dp) :: mtimevec = 0.0_dp !<
[1682]	162	TYPE(logpoint) :: log_event !<
[1318]	163
[1682]	164	INTEGER(idp) :: count !<
	165	INTEGER(idp) :: count_rate !<
[1]	166
	167
	168	!
[1318]	169	!-- Initialize and check, respectively, point of measurement
	170	IF ( log_event%place == ' ' ) THEN
	171	log_event%place = place
	172	ELSEIF ( log_event%place /= place ) THEN
[4015]	173	WRITE( message_string, * ) 'wrong argument expected: ', &
	174	TRIM(log_event%place), ' given: ', TRIM( place )
[1318]	175	CALL message( 'cpu_log', 'PA0174', 1, 2, 0, 6, 0 )
	176	ENDIF
[1]	177
	178	!
[1318]	179	!-- Determine, if barriers are allowed to set
	180	IF ( PRESENT( barrierwait ) ) THEN
	181	wait_allowed = barrierwait
	182	ELSE
	183	wait_allowed = .TRUE.
	184	ENDIF
	185
	186	!
	187	!-- MPI barrier, if requested, in order to avoid measuring wait times
	188	!-- caused by MPI routines waiting for other MPI routines of other
	189	!-- PEs that have not yet finished
	190	#if defined( __parallel )
[4015]	191	IF ( cpu_log_barrierwait .AND. wait_allowed .AND. &
[1318]	192	( modus == 'start' .OR. modus == 'continue' ) ) THEN
	193	CALL MPI_BARRIER( comm2d, ierr )
	194	ENDIF
	195	#endif
	196
	197	!
	198	!-- Take current time
	199	CALL SYSTEM_CLOCK( count, count_rate )
[4015]	200	mtime = REAL( count, KIND=dp ) / REAL( count_rate, KIND=dp )
[1]	201
	202	!
[1318]	203	!-- Start, stop or pause measurement
	204	IF ( modus == 'start' .OR. modus == 'continue' ) THEN
	205	log_event%mtime = mtime
	206	log_event%mtimevec = mtimevec
	207	ELSEIF ( modus == 'pause' ) THEN
	208	IF ( ( mtime - log_event%mtime ) < 0.0 .AND. first ) THEN
[4015]	209	WRITE( message_string, * ) 'negative time interval occured', &
	210	'&PE',myid,' L=PAUSE "',TRIM(log_event%place), &
	211	'" new=', mtime,' last=',log_event%mtime
[1318]	212	CALL message( 'cpu_log', 'PA0176', 0, 1, -1, 6, 0 )
	213	first = .FALSE.
	214	ENDIF
	215	log_event%isum = log_event%isum + mtime - log_event%mtime
	216	log_event%ivect = log_event%ivect + mtimevec - log_event%mtimevec
	217	ELSEIF ( modus == 'stop' ) THEN
[4015]	218	IF ( ( mtime - log_event%mtime + log_event%isum ) < 0.0 .AND. first ) THEN
	219	WRITE( message_string, * ) 'negative time interval occured', &
	220	'&PE',myid,' L=STOP "',TRIM(log_event%place),'" new=', &
	221	mtime,' last=',log_event%mtime,' isum=',log_event%isum
[1318]	222	CALL message( 'cpu_log', 'PA0177', 0, 1, -1, 6, 0 )
	223	first = .FALSE.
	224	ENDIF
	225	log_event%mtime = mtime - log_event%mtime + log_event%isum
	226	log_event%mtimevec = mtimevec - log_event%mtimevec + log_event%ivect
	227	log_event%sum = log_event%sum + log_event%mtime
	228	IF ( log_event%sum < 0.0 .AND. first ) THEN
[4015]	229	WRITE( message_string, * ) 'negative time interval occured', &
	230	'&PE',myid,' L=STOP "',TRIM(log_event%place),'" sum=', &
	231	log_event%sum,' mtime=',log_event%mtime
[1318]	232	CALL message( 'cpu_log', 'PA0178', 0, 1, -1, 6, 0 )
	233	first = .FALSE.
	234	ENDIF
	235	log_event%vector = log_event%vector + log_event%mtimevec
	236	log_event%counts = log_event%counts + 1
[4015]	237	log_event%isum = 0.0_dp
	238	log_event%ivect = 0.0_dp
[1318]	239	ELSE
[4015]	240	message_string = 'unknown modus of time measurement: ' // TRIM( modus )
[1318]	241	CALL message( 'cpu_log', 'PA0179', 0, 1, -1, 6, 0 )
[1]	242	ENDIF
[1318]	243
	244	END SUBROUTINE cpu_log
	245
	246
	247	!------------------------------------------------------------------------------!
	248	! Description:
	249	! ------------
[1682]	250	!> Analysis and output of the cpu-times measured. All PE results are collected
	251	!> on PE0 in order to calculate the mean cpu-time over all PEs and other
	252	!> statistics. The output is sorted according to the amount of cpu-time consumed
	253	!> and output on PE0.
[1318]	254	!------------------------------------------------------------------------------!
[1682]	255
	256	SUBROUTINE cpu_statistics
[1318]	257
	258	IMPLICIT NONE
	259
[1682]	260	INTEGER(iwp) :: i !<
	261	INTEGER(iwp) :: ii(1) !<
	262	INTEGER(iwp) :: iii !<
	263	INTEGER(iwp) :: sender !<
[4015]	264	REAL(dp) :: average_cputime !<
	265	REAL(dp), SAVE :: norm = 1.0_dp !<
	266	REAL(dp), DIMENSION(:), ALLOCATABLE :: pe_max !<
	267	REAL(dp), DIMENSION(:), ALLOCATABLE :: pe_min !<
	268	REAL(dp), DIMENSION(:), ALLOCATABLE :: pe_rms !<
	269	REAL(dp), DIMENSION(:), ALLOCATABLE :: pe_tmp !<
	270	REAL(dp), DIMENSION(:), ALLOCATABLE :: sum !<
	271	REAL(dp), DIMENSION(:,:), ALLOCATABLE :: pe_log_points !<
[1318]	272
	273
[3885]	274	CALL location_message( 'calculating cpu statistics', 'start' )
[1402]	275
[1318]	276	!
	277	!-- Compute cpu-times in seconds
	278	log_point%mtime = log_point%mtime / norm
	279	log_point%sum = log_point%sum / norm
	280	log_point%vector = log_point%vector / norm
	281	WHERE ( log_point%counts /= 0 )
	282	log_point%mean = log_point%sum / log_point%counts
	283	END WHERE
	284
	285
	286	!
	287	!-- Collect cpu-times from all PEs and calculate statistics
	288	IF ( myid == 0 ) THEN
	289	!
	290	!-- Allocate and initialize temporary arrays needed for statistics
[4015]	291	ALLOCATE( pe_max( SIZE( log_point ) ), pe_min( SIZE( log_point ) ), &
	292	pe_rms( SIZE( log_point ) ), pe_tmp( SIZE( log_point ) ), &
[1318]	293	pe_log_points( SIZE( log_point ), 0:numprocs-1 ) )
	294	pe_min = log_point%sum
	295	pe_max = log_point%sum ! need to be set in case of 1 PE
[4015]	296	pe_rms = 0.0_dp
	297	pe_tmp = 0.0_dp
[1318]	298
	299	#if defined( __parallel )
	300	!
	301	!-- Receive data from all PEs
	302	DO i = 1, numprocs-1
[4015]	303	CALL MPI_RECV( pe_tmp(1), SIZE( log_point ), MPI_DOUBLE_PRECISION, i, i, comm2d, &
	304	status, ierr )
[1318]	305	sender = status(MPI_SOURCE)
[3229]	306	pe_log_points(:,sender) = pe_tmp
[1318]	307	ENDDO
	308	pe_log_points(:,0) = log_point%sum ! Results from PE0
	309	!
	310	!-- Calculate mean of all PEs, store it on log_point%sum
	311	!-- and find minimum and maximum
	312	DO iii = 1, SIZE( log_point )
	313	DO i = 1, numprocs-1
	314	log_point(iii)%sum = log_point(iii)%sum + pe_log_points(iii,i)
	315	pe_min(iii) = MIN( pe_min(iii), pe_log_points(iii,i) )
	316	pe_max(iii) = MAX( pe_max(iii), pe_log_points(iii,i) )
	317	ENDDO
	318	log_point(iii)%sum = log_point(iii)%sum / numprocs
	319	!
	320	!-- Calculate rms
	321	DO i = 0, numprocs-1
[4015]	322	pe_rms(iii) = pe_rms(iii) + ( pe_log_points(iii,i) - log_point(iii)%sum )**2
[1318]	323	ENDDO
	324	pe_rms(iii) = SQRT( pe_rms(iii) / numprocs )
	325	ENDDO
	326	ELSE
	327	!
	328	!-- Send data to PE0 (pe_max is used as temporary storage to send
	329	!-- the data in order to avoid sending the data type log)
	330	ALLOCATE( pe_max( SIZE( log_point ) ) )
	331	pe_max = log_point%sum
[4015]	332	CALL MPI_SEND( pe_max(1), SIZE( log_point ), MPI_DOUBLE_PRECISION, 0, myid, comm2d, ierr )
[1318]	333	#endif
	334
[1]	335	ENDIF
[1318]	336
	337	!
	338	!-- Write cpu-times
	339	IF ( myid == 0 ) THEN
	340	!
	341	!-- Re-store sums
	342	ALLOCATE( sum( SIZE( log_point ) ) )
	343	WHERE ( log_point%counts /= 0 )
	344	sum = log_point%sum
	345	ELSEWHERE
[4015]	346	sum = -1.0_dp
[1318]	347	ENDWHERE
	348
	349	!
[2266]	350	!-- Get total time in order to calculate CPU-time per gridpoint and
	351	!-- timestep
[1318]	352	IF ( nr_timesteps_this_run /= 0 ) THEN
[4015]	353	average_cputime = log_point(1)%sum / REAL( ngp_3d(0), KIND=dp ) / &
	354	REAL( nr_timesteps_this_run, KIND=dp ) * 1E6_dp ! in micro-sec
[1318]	355	ELSE
[4015]	356	average_cputime = -1.0_dp
[1318]	357	ENDIF
	358
	359	!
	360	!-- Write cpu-times sorted by size
	361	CALL check_open( 18 )
	362	#if defined( __parallel )
[4015]	363	WRITE ( 18, 100 ) TRIM( run_description_header ), numprocs * threads_per_task, &
	364	pdims(1), pdims(2), threads_per_task, nx+1, ny+1, nz, &
[2266]	365	nr_timesteps_this_run, average_cputime
[1318]	366
	367	WRITE ( 18, 110 )
	368	#else
[4015]	369	WRITE ( 18, 100 ) TRIM( run_description_header ), numprocs * threads_per_task, 1, 1, &
	370	threads_per_task, nx+1, ny+1, nz, nr_timesteps_this_run, &
	371	average_cputime
[1318]	372
	373	WRITE ( 18, 110 )
	374	#endif
	375	DO
	376	ii = MAXLOC( sum )
	377	i = ii(1)
[4015]	378	IF ( sum(i) /= -1.0_dp ) THEN
	379	WRITE ( 18, 102 ) log_point(i)%place, log_point(i)%sum, &
	380	log_point(i)%sum / log_point(1)%sum * 100.0_dp, &
	381	log_point(i)%counts, pe_min(i), pe_max(i), pe_rms(i)
	382	sum(i) = -1.0_dp
[1318]	383	ELSE
	384	EXIT
	385	ENDIF
	386	ENDDO
[1]	387	ENDIF
	388
	389
[1318]	390	!
	391	!-- The same procedure again for the individual measurements.
	392	!
	393	!-- Compute cpu-times in seconds
	394	log_point_s%mtime = log_point_s%mtime / norm
	395	log_point_s%sum = log_point_s%sum / norm
	396	log_point_s%vector = log_point_s%vector / norm
	397	WHERE ( log_point_s%counts /= 0 )
	398	log_point_s%mean = log_point_s%sum / log_point_s%counts
	399	END WHERE
	400
	401	!
	402	!-- Collect cpu-times from all PEs and calculate statistics
	403	#if defined( __parallel )
	404	!
	405	!-- Set barrier in order to avoid that PE0 receives log_point_s-data
	406	!-- while still busy with receiving log_point-data (see above)
	407	CALL MPI_BARRIER( comm2d, ierr )
	408	#endif
	409	IF ( myid == 0 ) THEN
	410	!
	411	!-- Initialize temporary arrays needed for statistics
	412	pe_min = log_point_s%sum
	413	pe_max = log_point_s%sum ! need to be set in case of 1 PE
[4015]	414	pe_rms = 0.0_dp
[1318]	415
	416	#if defined( __parallel )
	417	!
	418	!-- Receive data from all PEs
	419	DO i = 1, numprocs-1
[4015]	420	CALL MPI_RECV( pe_tmp(1), SIZE( log_point ), MPI_DOUBLE_PRECISION, MPI_ANY_SOURCE, &
	421	MPI_ANY_TAG, comm2d, status, ierr )
[1318]	422	sender = status(MPI_SOURCE)
[3229]	423	pe_log_points(:,sender) = pe_tmp
[1318]	424	ENDDO
	425	pe_log_points(:,0) = log_point_s%sum ! Results from PE0
	426	!
	427	!-- Calculate mean of all PEs, store it on log_point_s%sum
	428	!-- and find minimum and maximum
	429	DO iii = 1, SIZE( log_point )
	430	DO i = 1, numprocs-1
[4015]	431	log_point_s(iii)%sum = log_point_s(iii)%sum + pe_log_points(iii,i)
[1318]	432	pe_min(iii) = MIN( pe_min(iii), pe_log_points(iii,i) )
	433	pe_max(iii) = MAX( pe_max(iii), pe_log_points(iii,i) )
	434	ENDDO
	435	log_point_s(iii)%sum = log_point_s(iii)%sum / numprocs
	436	!
	437	!-- Calculate rms
	438	DO i = 0, numprocs-1
[4015]	439	pe_rms(iii) = pe_rms(iii) + ( pe_log_points(iii,i) - log_point_s(iii)%sum )**2
[1318]	440	ENDDO
	441	pe_rms(iii) = SQRT( pe_rms(iii) / numprocs )
	442	ENDDO
	443	ELSE
	444	!
	445	!-- Send data to PE0 (pe_max is used as temporary storage to send
	446	!-- the data in order to avoid sending the data type log)
	447	pe_max = log_point_s%sum
[4015]	448	CALL MPI_SEND( pe_max(1), SIZE( log_point ), MPI_DOUBLE_PRECISION, 0, 0, comm2d, ierr )
[1318]	449	#endif
	450
	451	ENDIF
	452
	453	!
	454	!-- Write cpu-times
	455	IF ( myid == 0 ) THEN
	456	!
	457	!-- Re-store sums
	458	WHERE ( log_point_s%counts /= 0 )
	459	sum = log_point_s%sum
	460	ELSEWHERE
[4015]	461	sum = -1.0_dp
[1318]	462	ENDWHERE
	463
	464	!
	465	!-- Write cpu-times sorted by size
	466	WRITE ( 18, 101 )
	467	DO
	468	ii = MAXLOC( sum )
	469	i = ii(1)
[4015]	470	IF ( sum(i) /= -1.0_dp ) THEN
	471	WRITE ( 18, 102 ) log_point_s(i)%place, log_point_s(i)%sum, &
	472	log_point_s(i)%sum / log_point(1)%sum * 100.0_dp, &
	473	log_point_s(i)%counts, pe_min(i), pe_max(i), pe_rms(i)
	474	sum(i) = -1.0_dp
[1318]	475	ELSE
	476	EXIT
	477	ENDIF
	478	ENDDO
	479
	480	!
	481	!-- Output of handling of MPI operations
	482	IF ( collective_wait ) THEN
	483	WRITE ( 18, 103 )
	484	ELSE
	485	WRITE ( 18, 104 )
	486	ENDIF
	487	IF ( cpu_log_barrierwait ) WRITE ( 18, 111 )
	488	IF ( synchronous_exchange ) THEN
	489	WRITE ( 18, 105 )
	490	ELSE
	491	WRITE ( 18, 106 )
	492	ENDIF
	493
	494	!
	495	!-- Empty lines in order to create a gap to the results of the model
	496	!-- continuation runs
	497	WRITE ( 18, 107 )
	498
	499	!
	500	!-- Unit 18 is not needed anymore
	501	CALL close_file( 18 )
	502
	503	ENDIF
	504
[3885]	505	CALL location_message( 'calculating cpu statistics', 'finished' )
[1318]	506
[3885]	507
[4015]	508	100 FORMAT (A/11('-')//'CPU measures for ',I5,' PEs (',I5,'(x) * ',I5,'(y', &
	509	&') tasks *',I5,' threads):'// &
	510	'gridpoints (x/y/z): ',20X,I5,' * ',I5,' * ',I5/ &
	511	'nr of timesteps: ',22X,I6/ &
[1318]	512	'cpu time per grid point and timestep: ',5X,F8.5,' * 10**-6 s')
	513
	514	101 FORMAT (/'special measures:'/ &
[4015]	515	&'-----------------------------------------------------------', &
[3483]	516	&'---------------------')
[1318]	517
[3483]	518	102 FORMAT (A25,2X,F9.3,2X,F7.2,1X,I7,2(1X,F9.3),1X,F5.2)
[1318]	519	103 FORMAT (/'Barriers are set in front of collective operations')
	520	104 FORMAT (/'No barriers are set in front of collective operations')
	521	105 FORMAT (/'Exchange of ghostpoints via MPI_SENDRCV')
	522	106 FORMAT (/'Exchange of ghostpoints via MPI_ISEND/MPI_IRECV')
	523	107 FORMAT (//)
[4015]	524	110 FORMAT ('------------------------------------------------------------', &
	525	&'----------'// &
	526	&'place: mean counts ', &
	527	&' min max rms'/ &
	528	&' sec. % ', &
	529	&'sec. sec. sec.'/ &
	530	&'-----------------------------------------------------------', &
[3483]	531	&'---------------------')
[1318]	532	111 FORMAT (/'Barriers are set at beginning (start/continue) of measurements')
	533
	534	END SUBROUTINE cpu_statistics
	535
	536	END MODULE cpulog

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