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source: palm/trunk/SOURCE/cpulog_mod.f90 @ 1977

Last change on this file since 1977 was 1932, checked in by suehring, 8 years ago
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[1850]	1	!> @file cpulog_mod.f90
[1036]	2	!--------------------------------------------------------------------------------!
	3	! This file is part of PALM.
	4	!
	5	! PALM is free software: you can redistribute it and/or modify it under the terms
	6	! of the GNU General Public License as published by the Free Software Foundation,
	7	! either version 3 of the License, or (at your option) any later version.
	8	!
	9	! PALM is distributed in the hope that it will be useful, but WITHOUT ANY
	10	! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
	11	! A PARTICULAR PURPOSE. See the GNU General Public License for more details.
	12	!
	13	! You should have received a copy of the GNU General Public License along with
	14	! PALM. If not, see <http://www.gnu.org/licenses/>.
	15	!
[1818]	16	! Copyright 1997-2016 Leibniz Universitaet Hannover
[1036]	17	!--------------------------------------------------------------------------------!
	18	!
[254]	19	! Current revisions:
[1]	20	! -----------------
[1403]	21	!
[1932]	22	!
[1321]	23	! Former revisions:
	24	! -----------------
	25	! $Id: cpulog_mod.f90 1932 2016-06-10 12:09:21Z maronga $
	26	!
[1932]	27	! 1931 2016-06-10 12:06:59Z suehring
	28	! Adjustment in character length and format statement
	29	!
[1851]	30	! 1850 2016-04-08 13:29:27Z maronga
	31	! Module renamed
	32	!
	33	!
[1809]	34	! 1808 2016-04-05 19:44:00Z raasch
	35	! cpu measurements are done with standard FORTRAN routine on every machine
	36	!
[1683]	37	! 1682 2015-10-07 23:56:08Z knoop
	38	! Code annotations made doxygen readable
	39	!
[1403]	40	! 1402 2014-05-09 14:25:13Z raasch
	41	! location messages added
	42	!
[1370]	43	! 1369 2014-04-24 05:57:38Z raasch
	44	! routine description added
	45	!
[1354]	46	! 1353 2014-04-08 15:21:23Z heinze
	47	! REAL constants provided with KIND-attribute
	48	!
[1323]	49	! 1322 2014-03-20 16:38:49Z raasch
	50	! REAL functions provided with KIND-attribute
	51	!
[1321]	52	! 1320 2014-03-20 08:40:49Z raasch
[1320]	53	! ONLY-attribute added to USE-statements,
	54	! kind-parameters added to all INTEGER and REAL declaration statements,
	55	! kinds are defined in new module kinds,
	56	! revision history before 2012 removed,
	57	! comment fields (!:) to be used for variable explanations added to
	58	! all variable declaration statements
[1321]	59	!
[1319]	60	! 1318 2014-03-17 13:35:16Z raasch
	61	! former files/routines cpu_log and cpu_statistics combined to one module,
	62	! which also includes the former data module cpulog from the modules-file
	63	!
[1037]	64	! 1036 2012-10-22 13:43:42Z raasch
	65	! code put under GPL (PALM 3.9)
	66	!
[1]	67	! Revision 1.1 1997/07/24 11:12:29 raasch
	68	! Initial revision
	69	!
	70	!
	71	! Description:
	72	! ------------
[1682]	73	!> CPU-time measurements for any program part whatever. Results of the
	74	!> measurements are output at the end of the run in local file CPU_MEASURES.
	75	!>
	76	!> To measure the CPU-time (better to say the wallclock time) of a specific code
	77	!> segment, two calls of cpu_log have to be used as brackets in front and at the
	78	!> end of the segment:
	79	!>
	80	!> CALL cpu_log( log_point(n), 'any identifier', 'start' )
	81	!> ... code segment ...
	82	!> CALL cpu_log( log_point(n), 'any identifier', 'stop' )
	83	!>
	84	!> Parts of the code segment can be excluded from the measurement by additional
	85	!> call of cpu_log:
	86	!>
	87	!> ... first segment to be measured
	88	!> CALL cpu_log( log_point(n), 'any identifier', 'pause' )
	89	!> ... oart of segment to be excluded from measurement
	90	!> CALL cpu_log( log_point(n), 'any identifier', 'continue' )
	91	!> ... second segment to be mesasured
	92	!>
	93	!> n is an INTEGER within the interval [1,100] defining the id of the specific
	94	!> code segment, 'any identifier' is a string describing the code segment to be
	95	!> measured. It can be freely chosen and results will appear under this name in
	96	!> file CPU_MEASURES. ids can only be used once. If you like to do a
	97	!> measurement of a new part of the code, please look for an id which is unused
	98	!> ao far.
	99	!>
	100	!> d3par-parameter cpu_log_barrierwait can be used to set an MPI barrier at the
	101	!> beginning of the measurement (modus 'start' or 'continue'), to avoid that
	102	!> idle times (due to MPI calls in the code segment, which are
	103	!> waiting for other processes to be finished) affect the measurements.
	104	!> If barriers shall not be used at all, a fourth, optional parameter has to be
	105	!> given:
	106	!>
	107	!> CALL cpu_log( ..., ..., 'start', cpu_log_nowait )
	108	!>
	109	!> Variable log_point should be used for non-overlapping code segments, and they
	110	!> should sum up to the total cpu-time required by the complete run.
	111	!> Variable log_point_s can be used for any other special (s) measurements.
[3]	112	!------------------------------------------------------------------------------!
[1682]	113	MODULE cpulog
	114
[1]	115
[1320]	116	USE control_parameters, &
	117	ONLY: message_string, nr_timesteps_this_run, run_description_header, &
	118	synchronous_exchange
	119
	120	USE indices, &
	121	ONLY: nx, ny, nz
	122
	123	USE kinds
	124
[1]	125	USE pegrid
	126
	127	IMPLICIT NONE
	128
[1318]	129	PRIVATE
[1320]	130	PUBLIC cpu_log, cpu_log_barrierwait, cpu_log_nowait, cpu_statistics, &
[1318]	131	initial_wallclock_time, log_point, log_point_s
[1]	132
[1318]	133	INTERFACE cpu_log
	134	MODULE PROCEDURE cpu_log
	135	END INTERFACE cpu_log
	136
	137	INTERFACE cpu_statistics
	138	MODULE PROCEDURE cpu_statistics
	139	END INTERFACE cpu_statistics
	140
[1682]	141	INTEGER(iwp), PARAMETER :: cpu_log_continue = 0 !<
	142	INTEGER(iwp), PARAMETER :: cpu_log_pause = 1 !<
	143	INTEGER(iwp), PARAMETER :: cpu_log_start = 2 !<
	144	INTEGER(iwp), PARAMETER :: cpu_log_stop = 3 !<
[1318]	145
[1682]	146	LOGICAL :: cpu_log_barrierwait = .FALSE. !<
	147	LOGICAL, PARAMETER :: cpu_log_nowait = .FALSE. !<
[1318]	148
[1682]	149	REAL(wp) :: initial_wallclock_time !<
[1318]	150
	151	TYPE logpoint
[1682]	152	REAL(wp) :: isum !<
	153	REAL(wp) :: ivect !<
	154	REAL(wp) :: mean !<
	155	REAL(wp) :: mtime !<
	156	REAL(wp) :: mtimevec !<
	157	REAL(wp) :: sum !<
	158	REAL(wp) :: vector !<
	159	INTEGER(iwp) :: counts !<
[1931]	160	CHARACTER (LEN=25) :: place !<
[1318]	161	END TYPE logpoint
	162
[1353]	163	TYPE(logpoint), DIMENSION(100) :: log_point = logpoint( 0.0_wp, 0.0_wp, &
	164	0.0_wp, 0.0_wp, 0.0_wp, 0.0_wp, 0.0_wp, &
	165	0, ' ' ), &
	166	log_point_s = logpoint( 0.0_wp, 0.0_wp, &
	167	0.0_wp, 0.0_wp, 0.0_wp, 0.0_wp, 0.0_wp, &
	168	0, ' ' )
[1318]	169
	170	SAVE
	171
	172	CONTAINS
	173
[1682]	174	!------------------------------------------------------------------------------!
	175	! Description:
	176	! ------------
	177	!> @todo Missing subroutine description.
	178	!------------------------------------------------------------------------------!
[1318]	179	SUBROUTINE cpu_log( log_event, place, modus, barrierwait )
	180
	181	IMPLICIT NONE
	182
[1682]	183	CHARACTER (LEN=*) :: modus !<
	184	CHARACTER (LEN=*) :: place !<
[1320]	185
[1682]	186	LOGICAL :: wait_allowed !<
	187	LOGICAL, OPTIONAL :: barrierwait !<
	188	LOGICAL, SAVE :: first = .TRUE. !<
[1320]	189
[1682]	190	REAL(wp) :: mtime = 0.0_wp !<
	191	REAL(wp) :: mtimevec = 0.0_wp !<
	192	TYPE(logpoint) :: log_event !<
[1318]	193
[1682]	194	INTEGER(idp) :: count !<
	195	INTEGER(idp) :: count_rate !<
[1]	196
	197
	198	!
[1318]	199	!-- Initialize and check, respectively, point of measurement
	200	IF ( log_event%place == ' ' ) THEN
	201	log_event%place = place
	202	ELSEIF ( log_event%place /= place ) THEN
[1320]	203	WRITE( message_string, * ) 'wrong argument & expected: ', &
[1318]	204	TRIM(log_event%place), ' given: ', TRIM( place )
	205	CALL message( 'cpu_log', 'PA0174', 1, 2, 0, 6, 0 )
	206	ENDIF
[1]	207
	208	!
[1318]	209	!-- Determine, if barriers are allowed to set
	210	IF ( PRESENT( barrierwait ) ) THEN
	211	wait_allowed = barrierwait
	212	ELSE
	213	wait_allowed = .TRUE.
	214	ENDIF
	215
	216	!
	217	!-- MPI barrier, if requested, in order to avoid measuring wait times
	218	!-- caused by MPI routines waiting for other MPI routines of other
	219	!-- PEs that have not yet finished
	220	#if defined( __parallel )
[1320]	221	IF ( cpu_log_barrierwait .AND. wait_allowed .AND. &
[1318]	222	( modus == 'start' .OR. modus == 'continue' ) ) THEN
	223	CALL MPI_BARRIER( comm2d, ierr )
	224	ENDIF
	225	#endif
	226
	227	!
	228	!-- Take current time
	229	CALL SYSTEM_CLOCK( count, count_rate )
[1322]	230	mtime = REAL( count, KIND=wp ) / REAL( count_rate, KIND=wp )
[1]	231
	232	!
[1318]	233	!-- Start, stop or pause measurement
	234	IF ( modus == 'start' .OR. modus == 'continue' ) THEN
	235	log_event%mtime = mtime
	236	log_event%mtimevec = mtimevec
	237	ELSEIF ( modus == 'pause' ) THEN
	238	IF ( ( mtime - log_event%mtime ) < 0.0 .AND. first ) THEN
[1320]	239	WRITE( message_string, * ) 'negative time interval occured', &
	240	' &PE',myid,' L=PAUSE "',TRIM(log_event%place), &
	241	'" new=', mtime,' last=',log_event%mtime
[1318]	242	CALL message( 'cpu_log', 'PA0176', 0, 1, -1, 6, 0 )
	243	first = .FALSE.
	244	ENDIF
	245	log_event%isum = log_event%isum + mtime - log_event%mtime
	246	log_event%ivect = log_event%ivect + mtimevec - log_event%mtimevec
	247	ELSEIF ( modus == 'stop' ) THEN
[1320]	248	IF ( ( mtime - log_event%mtime + log_event%isum ) < 0.0 .AND. &
[1318]	249	first ) THEN
[1320]	250	WRITE( message_string, * ) 'negative time interval occured', &
[1318]	251	' &PE',myid,' L=STOP "',TRIM(log_event%place),'" new=', &
	252	mtime,' last=',log_event%mtime,' isum=',log_event%isum
	253	CALL message( 'cpu_log', 'PA0177', 0, 1, -1, 6, 0 )
	254	first = .FALSE.
	255	ENDIF
	256	log_event%mtime = mtime - log_event%mtime + log_event%isum
	257	log_event%mtimevec = mtimevec - log_event%mtimevec + log_event%ivect
	258	log_event%sum = log_event%sum + log_event%mtime
	259	IF ( log_event%sum < 0.0 .AND. first ) THEN
[1320]	260	WRITE( message_string, * ) 'negative time interval occured', &
[1318]	261	' &PE',myid,' L=STOP "',TRIM(log_event%place),'" sum=', &
	262	log_event%sum,' mtime=',log_event%mtime
	263	CALL message( 'cpu_log', 'PA0178', 0, 1, -1, 6, 0 )
	264	first = .FALSE.
	265	ENDIF
	266	log_event%vector = log_event%vector + log_event%mtimevec
	267	log_event%counts = log_event%counts + 1
[1353]	268	log_event%isum = 0.0_wp
	269	log_event%ivect = 0.0_wp
[1318]	270	ELSE
	271	message_string = 'unknown modus of time measurement: ' // TRIM( modus )
	272	CALL message( 'cpu_log', 'PA0179', 0, 1, -1, 6, 0 )
[1]	273	ENDIF
[1318]	274
	275	END SUBROUTINE cpu_log
	276
	277
	278	!------------------------------------------------------------------------------!
	279	! Description:
	280	! ------------
[1682]	281	!> Analysis and output of the cpu-times measured. All PE results are collected
	282	!> on PE0 in order to calculate the mean cpu-time over all PEs and other
	283	!> statistics. The output is sorted according to the amount of cpu-time consumed
	284	!> and output on PE0.
[1318]	285	!------------------------------------------------------------------------------!
[1682]	286
	287	SUBROUTINE cpu_statistics
[1318]	288
	289	IMPLICIT NONE
	290
[1682]	291	INTEGER(iwp) :: i !<
	292	INTEGER(iwp) :: ii(1) !<
	293	INTEGER(iwp) :: iii !<
	294	INTEGER(iwp) :: sender !<
	295	REAL(wp) :: average_cputime !<
	296	REAL(wp), SAVE :: norm = 1.0_wp !<
	297	REAL(wp), DIMENSION(:), ALLOCATABLE :: pe_max !<
	298	REAL(wp), DIMENSION(:), ALLOCATABLE :: pe_min !<
	299	REAL(wp), DIMENSION(:), ALLOCATABLE :: pe_rms !<
	300	REAL(wp), DIMENSION(:), ALLOCATABLE :: sum !<
	301	REAL(wp), DIMENSION(:,:), ALLOCATABLE :: pe_log_points !<
[1318]	302
	303
[1402]	304	CALL location_message( 'calculating cpu statistics', .FALSE. )
	305
[1318]	306	!
	307	!-- Compute cpu-times in seconds
	308	log_point%mtime = log_point%mtime / norm
	309	log_point%sum = log_point%sum / norm
	310	log_point%vector = log_point%vector / norm
	311	WHERE ( log_point%counts /= 0 )
	312	log_point%mean = log_point%sum / log_point%counts
	313	END WHERE
	314
	315
	316	!
	317	!-- Collect cpu-times from all PEs and calculate statistics
	318	IF ( myid == 0 ) THEN
	319	!
	320	!-- Allocate and initialize temporary arrays needed for statistics
[1320]	321	ALLOCATE( pe_max( SIZE( log_point ) ), pe_min( SIZE( log_point ) ), &
	322	pe_rms( SIZE( log_point ) ), &
[1318]	323	pe_log_points( SIZE( log_point ), 0:numprocs-1 ) )
	324	pe_min = log_point%sum
	325	pe_max = log_point%sum ! need to be set in case of 1 PE
[1353]	326	pe_rms = 0.0_wp
[1318]	327
	328	#if defined( __parallel )
	329	!
	330	!-- Receive data from all PEs
	331	DO i = 1, numprocs-1
[1320]	332	CALL MPI_RECV( pe_max(1), SIZE( log_point ), MPI_REAL, &
[1318]	333	i, i, comm2d, status, ierr )
	334	sender = status(MPI_SOURCE)
	335	pe_log_points(:,sender) = pe_max
	336	ENDDO
	337	pe_log_points(:,0) = log_point%sum ! Results from PE0
	338	!
	339	!-- Calculate mean of all PEs, store it on log_point%sum
	340	!-- and find minimum and maximum
	341	DO iii = 1, SIZE( log_point )
	342	DO i = 1, numprocs-1
	343	log_point(iii)%sum = log_point(iii)%sum + pe_log_points(iii,i)
	344	pe_min(iii) = MIN( pe_min(iii), pe_log_points(iii,i) )
	345	pe_max(iii) = MAX( pe_max(iii), pe_log_points(iii,i) )
	346	ENDDO
	347	log_point(iii)%sum = log_point(iii)%sum / numprocs
	348	!
	349	!-- Calculate rms
	350	DO i = 0, numprocs-1
[1320]	351	pe_rms(iii) = pe_rms(iii) + ( &
	352	pe_log_points(iii,i) - log_point(iii)%sum &
[1318]	353	)**2
	354	ENDDO
	355	pe_rms(iii) = SQRT( pe_rms(iii) / numprocs )
	356	ENDDO
	357	ELSE
	358	!
	359	!-- Send data to PE0 (pe_max is used as temporary storage to send
	360	!-- the data in order to avoid sending the data type log)
	361	ALLOCATE( pe_max( SIZE( log_point ) ) )
	362	pe_max = log_point%sum
	363	CALL MPI_SEND( pe_max(1), SIZE( log_point ), MPI_REAL, 0, myid, comm2d, &
	364	ierr )
	365	#endif
	366
[1]	367	ENDIF
[1318]	368
	369	!
	370	!-- Write cpu-times
	371	IF ( myid == 0 ) THEN
	372	!
	373	!-- Re-store sums
	374	ALLOCATE( sum( SIZE( log_point ) ) )
	375	WHERE ( log_point%counts /= 0 )
	376	sum = log_point%sum
	377	ELSEWHERE
[1353]	378	sum = -1.0_wp
[1318]	379	ENDWHERE
	380
	381	!
	382	!-- Get total time in order to calculate CPU-time per gridpoint and timestep
	383	IF ( nr_timesteps_this_run /= 0 ) THEN
[1322]	384	average_cputime = log_point(1)%sum / REAL( (nx+1) * (ny+1) * nz, KIND=wp ) / &
	385	REAL( nr_timesteps_this_run, KIND=wp ) * 1E6_wp ! in micro-sec
[1318]	386	ELSE
[1353]	387	average_cputime = -1.0_wp
[1318]	388	ENDIF
	389
	390	!
	391	!-- Write cpu-times sorted by size
	392	CALL check_open( 18 )
	393	#if defined( __parallel )
	394	WRITE ( 18, 100 ) TRIM( run_description_header ), &
	395	numprocs * threads_per_task, pdims(1), pdims(2), &
	396	threads_per_task, nx+1, ny+1, nz, nr_timesteps_this_run, &
	397	average_cputime
	398
	399	IF ( num_acc_per_node /= 0 ) WRITE ( 18, 108 ) num_acc_per_node
	400	WRITE ( 18, 110 )
	401	#else
	402	WRITE ( 18, 100 ) TRIM( run_description_header ), &
	403	numprocs * threads_per_task, 1, 1, &
	404	threads_per_task, nx+1, ny+1, nz, nr_timesteps_this_run, &
	405	average_cputime
	406
	407	IF ( num_acc_per_node /= 0 ) WRITE ( 18, 109 ) num_acc_per_node
	408	WRITE ( 18, 110 )
	409	#endif
	410	DO
	411	ii = MAXLOC( sum )
	412	i = ii(1)
[1353]	413	IF ( sum(i) /= -1.0_wp ) THEN
[1318]	414	WRITE ( 18, 102 ) &
[1353]	415	log_point(i)%place, log_point(i)%sum, &
	416	log_point(i)%sum / log_point(1)%sum * 100.0_wp, &
[1318]	417	log_point(i)%counts, pe_min(i), pe_max(i), pe_rms(i)
[1353]	418	sum(i) = -1.0_wp
[1318]	419	ELSE
	420	EXIT
	421	ENDIF
	422	ENDDO
[1]	423	ENDIF
	424
	425
[1318]	426	!
	427	!-- The same procedure again for the individual measurements.
	428	!
	429	!-- Compute cpu-times in seconds
	430	log_point_s%mtime = log_point_s%mtime / norm
	431	log_point_s%sum = log_point_s%sum / norm
	432	log_point_s%vector = log_point_s%vector / norm
	433	WHERE ( log_point_s%counts /= 0 )
	434	log_point_s%mean = log_point_s%sum / log_point_s%counts
	435	END WHERE
	436
	437	!
	438	!-- Collect cpu-times from all PEs and calculate statistics
	439	#if defined( __parallel )
	440	!
	441	!-- Set barrier in order to avoid that PE0 receives log_point_s-data
	442	!-- while still busy with receiving log_point-data (see above)
	443	CALL MPI_BARRIER( comm2d, ierr )
	444	#endif
	445	IF ( myid == 0 ) THEN
	446	!
	447	!-- Initialize temporary arrays needed for statistics
	448	pe_min = log_point_s%sum
	449	pe_max = log_point_s%sum ! need to be set in case of 1 PE
[1353]	450	pe_rms = 0.0_wp
[1318]	451
	452	#if defined( __parallel )
	453	!
	454	!-- Receive data from all PEs
	455	DO i = 1, numprocs-1
	456	CALL MPI_RECV( pe_max(1), SIZE( log_point ), MPI_REAL, &
	457	MPI_ANY_SOURCE, MPI_ANY_TAG, comm2d, status, ierr )
	458	sender = status(MPI_SOURCE)
	459	pe_log_points(:,sender) = pe_max
	460	ENDDO
	461	pe_log_points(:,0) = log_point_s%sum ! Results from PE0
	462	!
	463	!-- Calculate mean of all PEs, store it on log_point_s%sum
	464	!-- and find minimum and maximum
	465	DO iii = 1, SIZE( log_point )
	466	DO i = 1, numprocs-1
	467	log_point_s(iii)%sum = log_point_s(iii)%sum + pe_log_points(iii,i)
	468	pe_min(iii) = MIN( pe_min(iii), pe_log_points(iii,i) )
	469	pe_max(iii) = MAX( pe_max(iii), pe_log_points(iii,i) )
	470	ENDDO
	471	log_point_s(iii)%sum = log_point_s(iii)%sum / numprocs
	472	!
	473	!-- Calculate rms
	474	DO i = 0, numprocs-1
[1353]	475	pe_rms(iii) = pe_rms(iii) + ( &
[1318]	476	pe_log_points(iii,i) - log_point_s(iii)%sum &
	477	)**2
	478	ENDDO
	479	pe_rms(iii) = SQRT( pe_rms(iii) / numprocs )
	480	ENDDO
	481	ELSE
	482	!
	483	!-- Send data to PE0 (pe_max is used as temporary storage to send
	484	!-- the data in order to avoid sending the data type log)
	485	pe_max = log_point_s%sum
	486	CALL MPI_SEND( pe_max(1), SIZE( log_point ), MPI_REAL, 0, 0, comm2d, &
	487	ierr )
	488	#endif
	489
	490	ENDIF
	491
	492	!
	493	!-- Write cpu-times
	494	IF ( myid == 0 ) THEN
	495	!
	496	!-- Re-store sums
	497	WHERE ( log_point_s%counts /= 0 )
	498	sum = log_point_s%sum
	499	ELSEWHERE
[1353]	500	sum = -1.0_wp
[1318]	501	ENDWHERE
	502
	503	!
	504	!-- Write cpu-times sorted by size
	505	WRITE ( 18, 101 )
	506	DO
	507	ii = MAXLOC( sum )
	508	i = ii(1)
[1353]	509	IF ( sum(i) /= -1.0_wp ) THEN
	510	WRITE ( 18, 102 ) &
	511	log_point_s(i)%place, log_point_s(i)%sum, &
	512	log_point_s(i)%sum / log_point(1)%sum * 100.0_wp, &
[1318]	513	log_point_s(i)%counts, pe_min(i), pe_max(i), pe_rms(i)
[1353]	514	sum(i) = -1.0_wp
[1318]	515	ELSE
	516	EXIT
	517	ENDIF
	518	ENDDO
	519
	520	!
	521	!-- Output of handling of MPI operations
	522	IF ( collective_wait ) THEN
	523	WRITE ( 18, 103 )
	524	ELSE
	525	WRITE ( 18, 104 )
	526	ENDIF
	527	IF ( cpu_log_barrierwait ) WRITE ( 18, 111 )
	528	IF ( synchronous_exchange ) THEN
	529	WRITE ( 18, 105 )
	530	ELSE
	531	WRITE ( 18, 106 )
	532	ENDIF
	533
	534	!
	535	!-- Empty lines in order to create a gap to the results of the model
	536	!-- continuation runs
	537	WRITE ( 18, 107 )
	538
	539	!
	540	!-- Unit 18 is not needed anymore
	541	CALL close_file( 18 )
	542
	543	ENDIF
	544
[1402]	545	CALL location_message( 'finished', .TRUE. )
[1318]	546
	547	100 FORMAT (A/11('-')//'CPU measures for ',I5,' PEs (',I5,'(x) * ',I5,'(y', &
	548	&') tasks *',I5,' threads):'// &
	549	'gridpoints (x/y/z): ',20X,I5,' * ',I5,' * ',I5/ &
	550	'nr of timesteps: ',22X,I6/ &
	551	'cpu time per grid point and timestep: ',5X,F8.5,' * 10**-6 s')
	552
	553	101 FORMAT (/'special measures:'/ &
	554	&'-----------------------------------------------------------', &
[1931]	555	&'------------------------')
[1318]	556
[1931]	557	102 FORMAT (A25,2X,F9.3,2X,F7.2,1X,I7,3(1X,F9.3))
[1318]	558	103 FORMAT (/'Barriers are set in front of collective operations')
	559	104 FORMAT (/'No barriers are set in front of collective operations')
	560	105 FORMAT (/'Exchange of ghostpoints via MPI_SENDRCV')
	561	106 FORMAT (/'Exchange of ghostpoints via MPI_ISEND/MPI_IRECV')
	562	107 FORMAT (//)
	563	108 FORMAT ('Accelerator boards per node: ',14X,I2)
	564	109 FORMAT ('Accelerator boards: ',23X,I2)
[1931]	565	110 FORMAT ('-------------------------------------------------------------', &
	566	&'---------'//&
	567	&'place: mean counts min ',&
[1318]	568	&' max rms'/ &
[1931]	569	&' sec. % sec. ', &
[1318]	570	&' sec. sec.'/ &
[1931]	571	&'-----------------------------------------------------------', &
	572	&'------------------------')
[1318]	573	111 FORMAT (/'Barriers are set at beginning (start/continue) of measurements')
	574
	575	END SUBROUTINE cpu_statistics
	576
	577	END MODULE cpulog

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