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source: palm/trunk/SOURCE/cpulog.f90 @ 1491

Last change on this file since 1491 was 1403, checked in by raasch, 11 years ago
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[1318]	1	MODULE cpulog
[1]	2
[1036]	3	!--------------------------------------------------------------------------------!
	4	! This file is part of PALM.
	5	!
	6	! PALM is free software: you can redistribute it and/or modify it under the terms
	7	! of the GNU General Public License as published by the Free Software Foundation,
	8	! either version 3 of the License, or (at your option) any later version.
	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	!
[1310]	17	! Copyright 1997-2014 Leibniz Universitaet Hannover
[1036]	18	!--------------------------------------------------------------------------------!
	19	!
[254]	20	! Current revisions:
[1]	21	! -----------------
[1403]	22	!
	23	!
[1321]	24	! Former revisions:
	25	! -----------------
	26	! $Id: cpulog.f90 1403 2014-05-09 14:52:24Z heinze $
	27	!
[1403]	28	! 1402 2014-05-09 14:25:13Z raasch
	29	! location messages added
	30	!
[1370]	31	! 1369 2014-04-24 05:57:38Z raasch
	32	! routine description added
	33	!
[1354]	34	! 1353 2014-04-08 15:21:23Z heinze
	35	! REAL constants provided with KIND-attribute
	36	!
[1323]	37	! 1322 2014-03-20 16:38:49Z raasch
	38	! REAL functions provided with KIND-attribute
	39	!
[1321]	40	! 1320 2014-03-20 08:40:49Z raasch
[1320]	41	! ONLY-attribute added to USE-statements,
	42	! kind-parameters added to all INTEGER and REAL declaration statements,
	43	! kinds are defined in new module kinds,
	44	! revision history before 2012 removed,
	45	! comment fields (!:) to be used for variable explanations added to
	46	! all variable declaration statements
[1321]	47	!
[1319]	48	! 1318 2014-03-17 13:35:16Z raasch
	49	! former files/routines cpu_log and cpu_statistics combined to one module,
	50	! which also includes the former data module cpulog from the modules-file
	51	!
[1037]	52	! 1036 2012-10-22 13:43:42Z raasch
	53	! code put under GPL (PALM 3.9)
	54	!
[1]	55	! Revision 1.1 1997/07/24 11:12:29 raasch
	56	! Initial revision
	57	!
	58	!
	59	! Description:
	60	! ------------
[1369]	61	! CPU-time measurements for any program part whatever. Results of the
	62	! measurements are output at the end of the run in local file CPU_MEASURES.
	63	!
	64	! To measure the CPU-time (better to say the wallclock time) of a specific code
	65	! segment, two calls of cpu_log have to be used as brackets in front and at the
	66	! end of the segment:
	67	!
	68	! CALL cpu_log( log_point(n), 'any identifier', 'start' )
	69	! ... code segment ...
	70	! CALL cpu_log( log_point(n), 'any identifier', 'stop' )
	71	!
	72	! Parts of the code segment can be excluded from the measurement by additional
	73	! call of cpu_log:
	74	!
	75	! ... first segment to be measured
	76	! CALL cpu_log( log_point(n), 'any identifier', 'pause' )
	77	! ... oart of segment to be excluded from measurement
	78	! CALL cpu_log( log_point(n), 'any identifier', 'continue' )
	79	! ... second segment to be mesasured
	80	!
	81	! n is an INTEGER within the interval [1,100] defining the id of the specific
	82	! code segment, 'any identifier' is a string describing the code segment to be
	83	! measured. It can be freely chosen and results will appear under this name in
	84	! file CPU_MEASURES. ids can only be used once. If you like to do a
	85	! measurement of a new part of the code, please look for an id which is unused
	86	! ao far.
	87	!
	88	! d3par-parameter cpu_log_barrierwait can be used to set an MPI barrier at the
	89	! beginning of the measurement (modus 'start' or 'continue'), to avoid that
	90	! idle times (due to MPI calls in the code segment, which are
	91	! waiting for other processes to be finished) affect the measurements.
	92	! If barriers shall not be used at all, a fourth, optional parameter has to be
	93	! given:
	94	!
	95	! CALL cpu_log( ..., ..., 'start', cpu_log_nowait )
	96	!
	97	! Variable log_point should be used for non-overlapping code segments, and they
	98	! should sum up to the total cpu-time required by the complete run.
	99	! Variable log_point_s can be used for any other special (s) measurements.
[3]	100	!------------------------------------------------------------------------------!
[1]	101
[1320]	102	USE control_parameters, &
	103	ONLY: message_string, nr_timesteps_this_run, run_description_header, &
	104	synchronous_exchange
	105
	106	USE indices, &
	107	ONLY: nx, ny, nz
	108
	109	USE kinds
	110
[1]	111	USE pegrid
	112
	113	IMPLICIT NONE
	114
[1318]	115	PRIVATE
[1320]	116	PUBLIC cpu_log, cpu_log_barrierwait, cpu_log_nowait, cpu_statistics, &
[1318]	117	initial_wallclock_time, log_point, log_point_s
[1]	118
[1318]	119	INTERFACE cpu_log
	120	MODULE PROCEDURE cpu_log
	121	END INTERFACE cpu_log
	122
	123	INTERFACE cpu_statistics
	124	MODULE PROCEDURE cpu_statistics
	125	END INTERFACE cpu_statistics
	126
[1320]	127	INTEGER(iwp), PARAMETER :: cpu_log_continue = 0 !:
	128	INTEGER(iwp), PARAMETER :: cpu_log_pause = 1 !:
	129	INTEGER(iwp), PARAMETER :: cpu_log_start = 2 !:
	130	INTEGER(iwp), PARAMETER :: cpu_log_stop = 3 !:
[1318]	131
[1320]	132	LOGICAL :: cpu_log_barrierwait = .FALSE. !:
	133	LOGICAL, PARAMETER :: cpu_log_nowait = .FALSE. !:
[1318]	134
[1320]	135	REAL(wp) :: initial_wallclock_time !:
[1318]	136
	137	TYPE logpoint
[1320]	138	REAL(wp) :: isum !:
	139	REAL(wp) :: ivect !:
	140	REAL(wp) :: mean !:
	141	REAL(wp) :: mtime !:
	142	REAL(wp) :: mtimevec !:
	143	REAL(wp) :: sum !:
	144	REAL(wp) :: vector !:
	145	INTEGER(iwp) :: counts !:
	146	CHARACTER (LEN=20) :: place !:
[1318]	147	END TYPE logpoint
	148
[1353]	149	TYPE(logpoint), DIMENSION(100) :: log_point = logpoint( 0.0_wp, 0.0_wp, &
	150	0.0_wp, 0.0_wp, 0.0_wp, 0.0_wp, 0.0_wp, &
	151	0, ' ' ), &
	152	log_point_s = logpoint( 0.0_wp, 0.0_wp, &
	153	0.0_wp, 0.0_wp, 0.0_wp, 0.0_wp, 0.0_wp, &
	154	0, ' ' )
[1318]	155
	156	SAVE
	157
	158	CONTAINS
	159
	160	SUBROUTINE cpu_log( log_event, place, modus, barrierwait )
	161
	162	IMPLICIT NONE
	163
[1320]	164	CHARACTER (LEN=*) :: modus !:
	165	CHARACTER (LEN=*) :: place !:
	166
	167	LOGICAL :: wait_allowed !:
	168	LOGICAL, OPTIONAL :: barrierwait !:
	169	LOGICAL, SAVE :: first = .TRUE. !:
	170
[1353]	171	REAL(wp) :: mtime = 0.0_wp !:
	172	REAL(wp) :: mtimevec = 0.0_wp !:
[1320]	173	TYPE(logpoint) :: log_event !:
[1318]	174
[239]	175	#if defined( __lc ) \|\| defined( __decalpha )
[1320]	176	INTEGER(idp) :: count !:
	177	INTEGER(idp) :: count_rate !:
[239]	178	#elif defined( __nec )
[1320]	179	INTEGER(iwp) :: count !:
	180	INTEGER(iwp) :: count_rate !:
[1]	181	#elif defined( __ibm )
[1320]	182	INTEGER(idp) :: IRTC !:
[1]	183	#endif
	184
	185
	186	!
[1318]	187	!-- Initialize and check, respectively, point of measurement
	188	IF ( log_event%place == ' ' ) THEN
	189	log_event%place = place
	190	ELSEIF ( log_event%place /= place ) THEN
[1320]	191	WRITE( message_string, * ) 'wrong argument & expected: ', &
[1318]	192	TRIM(log_event%place), ' given: ', TRIM( place )
	193	CALL message( 'cpu_log', 'PA0174', 1, 2, 0, 6, 0 )
	194	ENDIF
[1]	195
	196	!
[1318]	197	!-- Determine, if barriers are allowed to set
	198	IF ( PRESENT( barrierwait ) ) THEN
	199	wait_allowed = barrierwait
	200	ELSE
	201	wait_allowed = .TRUE.
	202	ENDIF
	203
	204	!
	205	!-- MPI barrier, if requested, in order to avoid measuring wait times
	206	!-- caused by MPI routines waiting for other MPI routines of other
	207	!-- PEs that have not yet finished
	208	#if defined( __parallel )
[1320]	209	IF ( cpu_log_barrierwait .AND. wait_allowed .AND. &
[1318]	210	( modus == 'start' .OR. modus == 'continue' ) ) THEN
	211	CALL MPI_BARRIER( comm2d, ierr )
	212	ENDIF
	213	#endif
	214
	215	!
	216	!-- Take current time
[82]	217	#if defined( __lc ) \|\| defined( __decalpha ) \|\| defined( __nec )
[1318]	218	CALL SYSTEM_CLOCK( count, count_rate )
[1322]	219	mtime = REAL( count, KIND=wp ) / REAL( count_rate, KIND=wp )
[1]	220	#elif defined( __ibm )
[1322]	221	mtime = IRTC( ) * 1E-9_wp
[1]	222	#else
[1318]	223	message_string = 'no time measurement defined on this host'
	224	CALL message( 'cpu_log', 'PA0175', 1, 2, 0, 6, 0 )
[1]	225	#endif
	226
	227	!
[1318]	228	!-- Start, stop or pause measurement
	229	IF ( modus == 'start' .OR. modus == 'continue' ) THEN
	230	log_event%mtime = mtime
	231	log_event%mtimevec = mtimevec
	232	ELSEIF ( modus == 'pause' ) THEN
	233	IF ( ( mtime - log_event%mtime ) < 0.0 .AND. first ) THEN
[1320]	234	WRITE( message_string, * ) 'negative time interval occured', &
	235	' &PE',myid,' L=PAUSE "',TRIM(log_event%place), &
	236	'" new=', mtime,' last=',log_event%mtime
[1318]	237	CALL message( 'cpu_log', 'PA0176', 0, 1, -1, 6, 0 )
	238	first = .FALSE.
	239	ENDIF
	240	log_event%isum = log_event%isum + mtime - log_event%mtime
	241	log_event%ivect = log_event%ivect + mtimevec - log_event%mtimevec
	242	ELSEIF ( modus == 'stop' ) THEN
[1320]	243	IF ( ( mtime - log_event%mtime + log_event%isum ) < 0.0 .AND. &
[1318]	244	first ) THEN
[1320]	245	WRITE( message_string, * ) 'negative time interval occured', &
[1318]	246	' &PE',myid,' L=STOP "',TRIM(log_event%place),'" new=', &
	247	mtime,' last=',log_event%mtime,' isum=',log_event%isum
	248	CALL message( 'cpu_log', 'PA0177', 0, 1, -1, 6, 0 )
	249	first = .FALSE.
	250	ENDIF
	251	log_event%mtime = mtime - log_event%mtime + log_event%isum
	252	log_event%mtimevec = mtimevec - log_event%mtimevec + log_event%ivect
	253	log_event%sum = log_event%sum + log_event%mtime
	254	IF ( log_event%sum < 0.0 .AND. first ) THEN
[1320]	255	WRITE( message_string, * ) 'negative time interval occured', &
[1318]	256	' &PE',myid,' L=STOP "',TRIM(log_event%place),'" sum=', &
	257	log_event%sum,' mtime=',log_event%mtime
	258	CALL message( 'cpu_log', 'PA0178', 0, 1, -1, 6, 0 )
	259	first = .FALSE.
	260	ENDIF
	261	log_event%vector = log_event%vector + log_event%mtimevec
	262	log_event%counts = log_event%counts + 1
[1353]	263	log_event%isum = 0.0_wp
	264	log_event%ivect = 0.0_wp
[1318]	265	ELSE
	266	message_string = 'unknown modus of time measurement: ' // TRIM( modus )
	267	CALL message( 'cpu_log', 'PA0179', 0, 1, -1, 6, 0 )
[1]	268	ENDIF
[1318]	269
	270	END SUBROUTINE cpu_log
	271
	272
	273	SUBROUTINE cpu_statistics
	274	!------------------------------------------------------------------------------!
	275	! Description:
	276	! ------------
	277	! Analysis and output of the cpu-times measured. All PE results are collected
	278	! on PE0 in order to calculate the mean cpu-time over all PEs and other
	279	! statistics. The output is sorted according to the amount of cpu-time consumed
	280	! and output on PE0.
	281	!------------------------------------------------------------------------------!
	282
	283	IMPLICIT NONE
	284
[1320]	285	INTEGER(iwp) :: i !:
	286	INTEGER(iwp) :: ii(1) !:
	287	INTEGER(iwp) :: iii !:
	288	INTEGER(iwp) :: sender !:
	289	REAL(wp) :: average_cputime !:
[1353]	290	REAL(wp), SAVE :: norm = 1.0_wp !:
[1320]	291	REAL(wp), DIMENSION(:), ALLOCATABLE :: pe_max !:
	292	REAL(wp), DIMENSION(:), ALLOCATABLE :: pe_min !:
	293	REAL(wp), DIMENSION(:), ALLOCATABLE :: pe_rms !:
	294	REAL(wp), DIMENSION(:), ALLOCATABLE :: sum !:
	295	REAL(wp), DIMENSION(:,:), ALLOCATABLE :: pe_log_points !:
[1318]	296
	297
[1402]	298	CALL location_message( 'calculating cpu statistics', .FALSE. )
	299
[1318]	300	!
	301	!-- Compute cpu-times in seconds
	302	log_point%mtime = log_point%mtime / norm
	303	log_point%sum = log_point%sum / norm
	304	log_point%vector = log_point%vector / norm
	305	WHERE ( log_point%counts /= 0 )
	306	log_point%mean = log_point%sum / log_point%counts
	307	END WHERE
	308
	309
	310	!
	311	!-- Collect cpu-times from all PEs and calculate statistics
	312	IF ( myid == 0 ) THEN
	313	!
	314	!-- Allocate and initialize temporary arrays needed for statistics
[1320]	315	ALLOCATE( pe_max( SIZE( log_point ) ), pe_min( SIZE( log_point ) ), &
	316	pe_rms( SIZE( log_point ) ), &
[1318]	317	pe_log_points( SIZE( log_point ), 0:numprocs-1 ) )
	318	pe_min = log_point%sum
	319	pe_max = log_point%sum ! need to be set in case of 1 PE
[1353]	320	pe_rms = 0.0_wp
[1318]	321
	322	#if defined( __parallel )
	323	!
	324	!-- Receive data from all PEs
	325	DO i = 1, numprocs-1
[1320]	326	CALL MPI_RECV( pe_max(1), SIZE( log_point ), MPI_REAL, &
[1318]	327	i, i, comm2d, status, ierr )
	328	sender = status(MPI_SOURCE)
	329	pe_log_points(:,sender) = pe_max
	330	ENDDO
	331	pe_log_points(:,0) = log_point%sum ! Results from PE0
	332	!
	333	!-- Calculate mean of all PEs, store it on log_point%sum
	334	!-- and find minimum and maximum
	335	DO iii = 1, SIZE( log_point )
	336	DO i = 1, numprocs-1
	337	log_point(iii)%sum = log_point(iii)%sum + pe_log_points(iii,i)
	338	pe_min(iii) = MIN( pe_min(iii), pe_log_points(iii,i) )
	339	pe_max(iii) = MAX( pe_max(iii), pe_log_points(iii,i) )
	340	ENDDO
	341	log_point(iii)%sum = log_point(iii)%sum / numprocs
	342	!
	343	!-- Calculate rms
	344	DO i = 0, numprocs-1
[1320]	345	pe_rms(iii) = pe_rms(iii) + ( &
	346	pe_log_points(iii,i) - log_point(iii)%sum &
[1318]	347	)**2
	348	ENDDO
	349	pe_rms(iii) = SQRT( pe_rms(iii) / numprocs )
	350	ENDDO
	351	ELSE
	352	!
	353	!-- Send data to PE0 (pe_max is used as temporary storage to send
	354	!-- the data in order to avoid sending the data type log)
	355	ALLOCATE( pe_max( SIZE( log_point ) ) )
	356	pe_max = log_point%sum
	357	CALL MPI_SEND( pe_max(1), SIZE( log_point ), MPI_REAL, 0, myid, comm2d, &
	358	ierr )
	359	#endif
	360
[1]	361	ENDIF
[1318]	362
	363	!
	364	!-- Write cpu-times
	365	IF ( myid == 0 ) THEN
	366	!
	367	!-- Re-store sums
	368	ALLOCATE( sum( SIZE( log_point ) ) )
	369	WHERE ( log_point%counts /= 0 )
	370	sum = log_point%sum
	371	ELSEWHERE
[1353]	372	sum = -1.0_wp
[1318]	373	ENDWHERE
	374
	375	!
	376	!-- Get total time in order to calculate CPU-time per gridpoint and timestep
	377	IF ( nr_timesteps_this_run /= 0 ) THEN
[1322]	378	average_cputime = log_point(1)%sum / REAL( (nx+1) * (ny+1) * nz, KIND=wp ) / &
	379	REAL( nr_timesteps_this_run, KIND=wp ) * 1E6_wp ! in micro-sec
[1318]	380	ELSE
[1353]	381	average_cputime = -1.0_wp
[1318]	382	ENDIF
	383
	384	!
	385	!-- Write cpu-times sorted by size
	386	CALL check_open( 18 )
	387	#if defined( __parallel )
	388	WRITE ( 18, 100 ) TRIM( run_description_header ), &
	389	numprocs * threads_per_task, pdims(1), pdims(2), &
	390	threads_per_task, nx+1, ny+1, nz, nr_timesteps_this_run, &
	391	average_cputime
	392
	393	IF ( num_acc_per_node /= 0 ) WRITE ( 18, 108 ) num_acc_per_node
	394	WRITE ( 18, 110 )
	395	#else
	396	WRITE ( 18, 100 ) TRIM( run_description_header ), &
	397	numprocs * threads_per_task, 1, 1, &
	398	threads_per_task, nx+1, ny+1, nz, nr_timesteps_this_run, &
	399	average_cputime
	400
	401	IF ( num_acc_per_node /= 0 ) WRITE ( 18, 109 ) num_acc_per_node
	402	WRITE ( 18, 110 )
	403	#endif
	404	DO
	405	ii = MAXLOC( sum )
	406	i = ii(1)
[1353]	407	IF ( sum(i) /= -1.0_wp ) THEN
[1318]	408	WRITE ( 18, 102 ) &
[1353]	409	log_point(i)%place, log_point(i)%sum, &
	410	log_point(i)%sum / log_point(1)%sum * 100.0_wp, &
[1318]	411	log_point(i)%counts, pe_min(i), pe_max(i), pe_rms(i)
[1353]	412	sum(i) = -1.0_wp
[1318]	413	ELSE
	414	EXIT
	415	ENDIF
	416	ENDDO
[1]	417	ENDIF
	418
	419
[1318]	420	!
	421	!-- The same procedure again for the individual measurements.
	422	!
	423	!-- Compute cpu-times in seconds
	424	log_point_s%mtime = log_point_s%mtime / norm
	425	log_point_s%sum = log_point_s%sum / norm
	426	log_point_s%vector = log_point_s%vector / norm
	427	WHERE ( log_point_s%counts /= 0 )
	428	log_point_s%mean = log_point_s%sum / log_point_s%counts
	429	END WHERE
	430
	431	!
	432	!-- Collect cpu-times from all PEs and calculate statistics
	433	#if defined( __parallel )
	434	!
	435	!-- Set barrier in order to avoid that PE0 receives log_point_s-data
	436	!-- while still busy with receiving log_point-data (see above)
	437	CALL MPI_BARRIER( comm2d, ierr )
	438	#endif
	439	IF ( myid == 0 ) THEN
	440	!
	441	!-- Initialize temporary arrays needed for statistics
	442	pe_min = log_point_s%sum
	443	pe_max = log_point_s%sum ! need to be set in case of 1 PE
[1353]	444	pe_rms = 0.0_wp
[1318]	445
	446	#if defined( __parallel )
	447	!
	448	!-- Receive data from all PEs
	449	DO i = 1, numprocs-1
	450	CALL MPI_RECV( pe_max(1), SIZE( log_point ), MPI_REAL, &
	451	MPI_ANY_SOURCE, MPI_ANY_TAG, comm2d, status, ierr )
	452	sender = status(MPI_SOURCE)
	453	pe_log_points(:,sender) = pe_max
	454	ENDDO
	455	pe_log_points(:,0) = log_point_s%sum ! Results from PE0
	456	!
	457	!-- Calculate mean of all PEs, store it on log_point_s%sum
	458	!-- and find minimum and maximum
	459	DO iii = 1, SIZE( log_point )
	460	DO i = 1, numprocs-1
	461	log_point_s(iii)%sum = log_point_s(iii)%sum + pe_log_points(iii,i)
	462	pe_min(iii) = MIN( pe_min(iii), pe_log_points(iii,i) )
	463	pe_max(iii) = MAX( pe_max(iii), pe_log_points(iii,i) )
	464	ENDDO
	465	log_point_s(iii)%sum = log_point_s(iii)%sum / numprocs
	466	!
	467	!-- Calculate rms
	468	DO i = 0, numprocs-1
[1353]	469	pe_rms(iii) = pe_rms(iii) + ( &
[1318]	470	pe_log_points(iii,i) - log_point_s(iii)%sum &
	471	)**2
	472	ENDDO
	473	pe_rms(iii) = SQRT( pe_rms(iii) / numprocs )
	474	ENDDO
	475	ELSE
	476	!
	477	!-- Send data to PE0 (pe_max is used as temporary storage to send
	478	!-- the data in order to avoid sending the data type log)
	479	pe_max = log_point_s%sum
	480	CALL MPI_SEND( pe_max(1), SIZE( log_point ), MPI_REAL, 0, 0, comm2d, &
	481	ierr )
	482	#endif
	483
	484	ENDIF
	485
	486	!
	487	!-- Write cpu-times
	488	IF ( myid == 0 ) THEN
	489	!
	490	!-- Re-store sums
	491	WHERE ( log_point_s%counts /= 0 )
	492	sum = log_point_s%sum
	493	ELSEWHERE
[1353]	494	sum = -1.0_wp
[1318]	495	ENDWHERE
	496
	497	!
	498	!-- Write cpu-times sorted by size
	499	WRITE ( 18, 101 )
	500	DO
	501	ii = MAXLOC( sum )
	502	i = ii(1)
[1353]	503	IF ( sum(i) /= -1.0_wp ) THEN
	504	WRITE ( 18, 102 ) &
	505	log_point_s(i)%place, log_point_s(i)%sum, &
	506	log_point_s(i)%sum / log_point(1)%sum * 100.0_wp, &
[1318]	507	log_point_s(i)%counts, pe_min(i), pe_max(i), pe_rms(i)
[1353]	508	sum(i) = -1.0_wp
[1318]	509	ELSE
	510	EXIT
	511	ENDIF
	512	ENDDO
	513
	514	!
	515	!-- Output of handling of MPI operations
	516	IF ( collective_wait ) THEN
	517	WRITE ( 18, 103 )
	518	ELSE
	519	WRITE ( 18, 104 )
	520	ENDIF
	521	IF ( cpu_log_barrierwait ) WRITE ( 18, 111 )
	522	IF ( synchronous_exchange ) THEN
	523	WRITE ( 18, 105 )
	524	ELSE
	525	WRITE ( 18, 106 )
	526	ENDIF
	527
	528	!
	529	!-- Empty lines in order to create a gap to the results of the model
	530	!-- continuation runs
	531	WRITE ( 18, 107 )
	532
	533	!
	534	!-- Unit 18 is not needed anymore
	535	CALL close_file( 18 )
	536
	537	ENDIF
	538
[1402]	539	CALL location_message( 'finished', .TRUE. )
[1318]	540
	541	100 FORMAT (A/11('-')//'CPU measures for ',I5,' PEs (',I5,'(x) * ',I5,'(y', &
	542	&') tasks *',I5,' threads):'// &
	543	'gridpoints (x/y/z): ',20X,I5,' * ',I5,' * ',I5/ &
	544	'nr of timesteps: ',22X,I6/ &
	545	'cpu time per grid point and timestep: ',5X,F8.5,' * 10**-6 s')
	546
	547	101 FORMAT (/'special measures:'/ &
	548	&'-----------------------------------------------------------', &
	549	&'--------------------')
	550
	551	102 FORMAT (A20,2X,F9.3,2X,F7.2,1X,I7,3(1X,F9.3))
	552	103 FORMAT (/'Barriers are set in front of collective operations')
	553	104 FORMAT (/'No barriers are set in front of collective operations')
	554	105 FORMAT (/'Exchange of ghostpoints via MPI_SENDRCV')
	555	106 FORMAT (/'Exchange of ghostpoints via MPI_ISEND/MPI_IRECV')
	556	107 FORMAT (//)
	557	108 FORMAT ('Accelerator boards per node: ',14X,I2)
	558	109 FORMAT ('Accelerator boards: ',23X,I2)
	559	110 FORMAT ('----------------------------------------------------------', &
	560	&'------------'//&
	561	&'place: mean counts min ', &
	562	&' max rms'/ &
	563	&' sec. % sec. ', &
	564	&' sec. sec.'/ &
	565	&'-----------------------------------------------------------', &
	566	&'-------------------')
	567	111 FORMAT (/'Barriers are set at beginning (start/continue) of measurements')
	568
	569	END SUBROUTINE cpu_statistics
	570
	571	END MODULE cpulog

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