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source: palm/trunk/SOURCE/cpulog.f90 @ 1728

Last change on this file since 1728 was 1683, checked in by knoop, 9 years ago
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[1682]	1	!> @file cpulog.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	!
[1310]	16	! Copyright 1997-2014 Leibniz Universitaet Hannover
[1036]	17	!--------------------------------------------------------------------------------!
	18	!
[254]	19	! Current revisions:
[1]	20	! -----------------
[1403]	21	!
[1683]	22	!
[1321]	23	! Former revisions:
	24	! -----------------
	25	! $Id: cpulog.f90 1683 2015-10-07 23:57:51Z knoop $
	26	!
[1683]	27	! 1682 2015-10-07 23:56:08Z knoop
	28	! Code annotations made doxygen readable
	29	!
[1403]	30	! 1402 2014-05-09 14:25:13Z raasch
	31	! location messages added
	32	!
[1370]	33	! 1369 2014-04-24 05:57:38Z raasch
	34	! routine description added
	35	!
[1354]	36	! 1353 2014-04-08 15:21:23Z heinze
	37	! REAL constants provided with KIND-attribute
	38	!
[1323]	39	! 1322 2014-03-20 16:38:49Z raasch
	40	! REAL functions provided with KIND-attribute
	41	!
[1321]	42	! 1320 2014-03-20 08:40:49Z raasch
[1320]	43	! ONLY-attribute added to USE-statements,
	44	! kind-parameters added to all INTEGER and REAL declaration statements,
	45	! kinds are defined in new module kinds,
	46	! revision history before 2012 removed,
	47	! comment fields (!:) to be used for variable explanations added to
	48	! all variable declaration statements
[1321]	49	!
[1319]	50	! 1318 2014-03-17 13:35:16Z raasch
	51	! former files/routines cpu_log and cpu_statistics combined to one module,
	52	! which also includes the former data module cpulog from the modules-file
	53	!
[1037]	54	! 1036 2012-10-22 13:43:42Z raasch
	55	! code put under GPL (PALM 3.9)
	56	!
[1]	57	! Revision 1.1 1997/07/24 11:12:29 raasch
	58	! Initial revision
	59	!
	60	!
	61	! Description:
	62	! ------------
[1682]	63	!> CPU-time measurements for any program part whatever. Results of the
	64	!> measurements are output at the end of the run in local file CPU_MEASURES.
	65	!>
	66	!> To measure the CPU-time (better to say the wallclock time) of a specific code
	67	!> segment, two calls of cpu_log have to be used as brackets in front and at the
	68	!> end of the segment:
	69	!>
	70	!> CALL cpu_log( log_point(n), 'any identifier', 'start' )
	71	!> ... code segment ...
	72	!> CALL cpu_log( log_point(n), 'any identifier', 'stop' )
	73	!>
	74	!> Parts of the code segment can be excluded from the measurement by additional
	75	!> call of cpu_log:
	76	!>
	77	!> ... first segment to be measured
	78	!> CALL cpu_log( log_point(n), 'any identifier', 'pause' )
	79	!> ... oart of segment to be excluded from measurement
	80	!> CALL cpu_log( log_point(n), 'any identifier', 'continue' )
	81	!> ... second segment to be mesasured
	82	!>
	83	!> n is an INTEGER within the interval [1,100] defining the id of the specific
	84	!> code segment, 'any identifier' is a string describing the code segment to be
	85	!> measured. It can be freely chosen and results will appear under this name in
	86	!> file CPU_MEASURES. ids can only be used once. If you like to do a
	87	!> measurement of a new part of the code, please look for an id which is unused
	88	!> ao far.
	89	!>
	90	!> d3par-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
	92	!> idle times (due to MPI calls in the code segment, which are
	93	!> waiting for other processes to be finished) affect the 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
	100	!> should sum up to the total cpu-time required by the complete run.
	101	!> Variable log_point_s can be used for any other special (s) measurements.
[3]	102	!------------------------------------------------------------------------------!
[1682]	103	MODULE cpulog
	104
[1]	105
[1320]	106	USE control_parameters, &
	107	ONLY: message_string, nr_timesteps_this_run, run_description_header, &
	108	synchronous_exchange
	109
	110	USE indices, &
	111	ONLY: nx, ny, nz
	112
	113	USE kinds
	114
[1]	115	USE pegrid
	116
	117	IMPLICIT NONE
	118
[1318]	119	PRIVATE
[1320]	120	PUBLIC cpu_log, cpu_log_barrierwait, cpu_log_nowait, cpu_statistics, &
[1318]	121	initial_wallclock_time, log_point, log_point_s
[1]	122
[1318]	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
[1682]	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 !<
[1318]	135
[1682]	136	LOGICAL :: cpu_log_barrierwait = .FALSE. !<
	137	LOGICAL, PARAMETER :: cpu_log_nowait = .FALSE. !<
[1318]	138
[1682]	139	REAL(wp) :: initial_wallclock_time !<
[1318]	140
	141	TYPE logpoint
[1682]	142	REAL(wp) :: isum !<
	143	REAL(wp) :: ivect !<
	144	REAL(wp) :: mean !<
	145	REAL(wp) :: mtime !<
	146	REAL(wp) :: mtimevec !<
	147	REAL(wp) :: sum !<
	148	REAL(wp) :: vector !<
	149	INTEGER(iwp) :: counts !<
	150	CHARACTER (LEN=20) :: place !<
[1318]	151	END TYPE logpoint
	152
[1353]	153	TYPE(logpoint), DIMENSION(100) :: log_point = logpoint( 0.0_wp, 0.0_wp, &
	154	0.0_wp, 0.0_wp, 0.0_wp, 0.0_wp, 0.0_wp, &
	155	0, ' ' ), &
	156	log_point_s = logpoint( 0.0_wp, 0.0_wp, &
	157	0.0_wp, 0.0_wp, 0.0_wp, 0.0_wp, 0.0_wp, &
	158	0, ' ' )
[1318]	159
	160	SAVE
	161
	162	CONTAINS
	163
[1682]	164	!------------------------------------------------------------------------------!
	165	! Description:
	166	! ------------
	167	!> @todo Missing subroutine description.
	168	!------------------------------------------------------------------------------!
[1318]	169	SUBROUTINE cpu_log( log_event, place, modus, barrierwait )
	170
	171	IMPLICIT NONE
	172
[1682]	173	CHARACTER (LEN=*) :: modus !<
	174	CHARACTER (LEN=*) :: place !<
[1320]	175
[1682]	176	LOGICAL :: wait_allowed !<
	177	LOGICAL, OPTIONAL :: barrierwait !<
	178	LOGICAL, SAVE :: first = .TRUE. !<
[1320]	179
[1682]	180	REAL(wp) :: mtime = 0.0_wp !<
	181	REAL(wp) :: mtimevec = 0.0_wp !<
	182	TYPE(logpoint) :: log_event !<
[1318]	183
[239]	184	#if defined( __lc ) \|\| defined( __decalpha )
[1682]	185	INTEGER(idp) :: count !<
	186	INTEGER(idp) :: count_rate !<
[239]	187	#elif defined( __nec )
[1682]	188	INTEGER(iwp) :: count !<
	189	INTEGER(iwp) :: count_rate !<
[1]	190	#elif defined( __ibm )
[1682]	191	INTEGER(idp) :: IRTC !<
[1]	192	#endif
	193
	194
	195	!
[1318]	196	!-- Initialize and check, respectively, point of measurement
	197	IF ( log_event%place == ' ' ) THEN
	198	log_event%place = place
	199	ELSEIF ( log_event%place /= place ) THEN
[1320]	200	WRITE( message_string, * ) 'wrong argument & expected: ', &
[1318]	201	TRIM(log_event%place), ' given: ', TRIM( place )
	202	CALL message( 'cpu_log', 'PA0174', 1, 2, 0, 6, 0 )
	203	ENDIF
[1]	204
	205	!
[1318]	206	!-- Determine, if barriers are allowed to set
	207	IF ( PRESENT( barrierwait ) ) THEN
	208	wait_allowed = barrierwait
	209	ELSE
	210	wait_allowed = .TRUE.
	211	ENDIF
	212
	213	!
	214	!-- MPI barrier, if requested, in order to avoid measuring wait times
	215	!-- caused by MPI routines waiting for other MPI routines of other
	216	!-- PEs that have not yet finished
	217	#if defined( __parallel )
[1320]	218	IF ( cpu_log_barrierwait .AND. wait_allowed .AND. &
[1318]	219	( modus == 'start' .OR. modus == 'continue' ) ) THEN
	220	CALL MPI_BARRIER( comm2d, ierr )
	221	ENDIF
	222	#endif
	223
	224	!
	225	!-- Take current time
[82]	226	#if defined( __lc ) \|\| defined( __decalpha ) \|\| defined( __nec )
[1318]	227	CALL SYSTEM_CLOCK( count, count_rate )
[1322]	228	mtime = REAL( count, KIND=wp ) / REAL( count_rate, KIND=wp )
[1]	229	#elif defined( __ibm )
[1322]	230	mtime = IRTC( ) * 1E-9_wp
[1]	231	#else
[1318]	232	message_string = 'no time measurement defined on this host'
	233	CALL message( 'cpu_log', 'PA0175', 1, 2, 0, 6, 0 )
[1]	234	#endif
	235
	236	!
[1318]	237	!-- Start, stop or pause measurement
	238	IF ( modus == 'start' .OR. modus == 'continue' ) THEN
	239	log_event%mtime = mtime
	240	log_event%mtimevec = mtimevec
	241	ELSEIF ( modus == 'pause' ) THEN
	242	IF ( ( mtime - log_event%mtime ) < 0.0 .AND. first ) THEN
[1320]	243	WRITE( message_string, * ) 'negative time interval occured', &
	244	' &PE',myid,' L=PAUSE "',TRIM(log_event%place), &
	245	'" new=', mtime,' last=',log_event%mtime
[1318]	246	CALL message( 'cpu_log', 'PA0176', 0, 1, -1, 6, 0 )
	247	first = .FALSE.
	248	ENDIF
	249	log_event%isum = log_event%isum + mtime - log_event%mtime
	250	log_event%ivect = log_event%ivect + mtimevec - log_event%mtimevec
	251	ELSEIF ( modus == 'stop' ) THEN
[1320]	252	IF ( ( mtime - log_event%mtime + log_event%isum ) < 0.0 .AND. &
[1318]	253	first ) THEN
[1320]	254	WRITE( message_string, * ) 'negative time interval occured', &
[1318]	255	' &PE',myid,' L=STOP "',TRIM(log_event%place),'" new=', &
	256	mtime,' last=',log_event%mtime,' isum=',log_event%isum
	257	CALL message( 'cpu_log', 'PA0177', 0, 1, -1, 6, 0 )
	258	first = .FALSE.
	259	ENDIF
	260	log_event%mtime = mtime - log_event%mtime + log_event%isum
	261	log_event%mtimevec = mtimevec - log_event%mtimevec + log_event%ivect
	262	log_event%sum = log_event%sum + log_event%mtime
	263	IF ( log_event%sum < 0.0 .AND. first ) THEN
[1320]	264	WRITE( message_string, * ) 'negative time interval occured', &
[1318]	265	' &PE',myid,' L=STOP "',TRIM(log_event%place),'" sum=', &
	266	log_event%sum,' mtime=',log_event%mtime
	267	CALL message( 'cpu_log', 'PA0178', 0, 1, -1, 6, 0 )
	268	first = .FALSE.
	269	ENDIF
	270	log_event%vector = log_event%vector + log_event%mtimevec
	271	log_event%counts = log_event%counts + 1
[1353]	272	log_event%isum = 0.0_wp
	273	log_event%ivect = 0.0_wp
[1318]	274	ELSE
	275	message_string = 'unknown modus of time measurement: ' // TRIM( modus )
	276	CALL message( 'cpu_log', 'PA0179', 0, 1, -1, 6, 0 )
[1]	277	ENDIF
[1318]	278
	279	END SUBROUTINE cpu_log
	280
	281
	282	!------------------------------------------------------------------------------!
	283	! Description:
	284	! ------------
[1682]	285	!> Analysis and output of the cpu-times measured. All PE results are collected
	286	!> on PE0 in order to calculate the mean cpu-time over all PEs and other
	287	!> statistics. The output is sorted according to the amount of cpu-time consumed
	288	!> and output on PE0.
[1318]	289	!------------------------------------------------------------------------------!
[1682]	290
	291	SUBROUTINE cpu_statistics
[1318]	292
	293	IMPLICIT NONE
	294
[1682]	295	INTEGER(iwp) :: i !<
	296	INTEGER(iwp) :: ii(1) !<
	297	INTEGER(iwp) :: iii !<
	298	INTEGER(iwp) :: sender !<
	299	REAL(wp) :: average_cputime !<
	300	REAL(wp), SAVE :: norm = 1.0_wp !<
	301	REAL(wp), DIMENSION(:), ALLOCATABLE :: pe_max !<
	302	REAL(wp), DIMENSION(:), ALLOCATABLE :: pe_min !<
	303	REAL(wp), DIMENSION(:), ALLOCATABLE :: pe_rms !<
	304	REAL(wp), DIMENSION(:), ALLOCATABLE :: sum !<
	305	REAL(wp), DIMENSION(:,:), ALLOCATABLE :: pe_log_points !<
[1318]	306
	307
[1402]	308	CALL location_message( 'calculating cpu statistics', .FALSE. )
	309
[1318]	310	!
	311	!-- Compute cpu-times in seconds
	312	log_point%mtime = log_point%mtime / norm
	313	log_point%sum = log_point%sum / norm
	314	log_point%vector = log_point%vector / norm
	315	WHERE ( log_point%counts /= 0 )
	316	log_point%mean = log_point%sum / log_point%counts
	317	END WHERE
	318
	319
	320	!
	321	!-- Collect cpu-times from all PEs and calculate statistics
	322	IF ( myid == 0 ) THEN
	323	!
	324	!-- Allocate and initialize temporary arrays needed for statistics
[1320]	325	ALLOCATE( pe_max( SIZE( log_point ) ), pe_min( SIZE( log_point ) ), &
	326	pe_rms( SIZE( log_point ) ), &
[1318]	327	pe_log_points( SIZE( log_point ), 0:numprocs-1 ) )
	328	pe_min = log_point%sum
	329	pe_max = log_point%sum ! need to be set in case of 1 PE
[1353]	330	pe_rms = 0.0_wp
[1318]	331
	332	#if defined( __parallel )
	333	!
	334	!-- Receive data from all PEs
	335	DO i = 1, numprocs-1
[1320]	336	CALL MPI_RECV( pe_max(1), SIZE( log_point ), MPI_REAL, &
[1318]	337	i, i, comm2d, status, ierr )
	338	sender = status(MPI_SOURCE)
	339	pe_log_points(:,sender) = pe_max
	340	ENDDO
	341	pe_log_points(:,0) = log_point%sum ! Results from PE0
	342	!
	343	!-- Calculate mean of all PEs, store it on log_point%sum
	344	!-- and find minimum and maximum
	345	DO iii = 1, SIZE( log_point )
	346	DO i = 1, numprocs-1
	347	log_point(iii)%sum = log_point(iii)%sum + pe_log_points(iii,i)
	348	pe_min(iii) = MIN( pe_min(iii), pe_log_points(iii,i) )
	349	pe_max(iii) = MAX( pe_max(iii), pe_log_points(iii,i) )
	350	ENDDO
	351	log_point(iii)%sum = log_point(iii)%sum / numprocs
	352	!
	353	!-- Calculate rms
	354	DO i = 0, numprocs-1
[1320]	355	pe_rms(iii) = pe_rms(iii) + ( &
	356	pe_log_points(iii,i) - log_point(iii)%sum &
[1318]	357	)**2
	358	ENDDO
	359	pe_rms(iii) = SQRT( pe_rms(iii) / numprocs )
	360	ENDDO
	361	ELSE
	362	!
	363	!-- Send data to PE0 (pe_max is used as temporary storage to send
	364	!-- the data in order to avoid sending the data type log)
	365	ALLOCATE( pe_max( SIZE( log_point ) ) )
	366	pe_max = log_point%sum
	367	CALL MPI_SEND( pe_max(1), SIZE( log_point ), MPI_REAL, 0, myid, comm2d, &
	368	ierr )
	369	#endif
	370
[1]	371	ENDIF
[1318]	372
	373	!
	374	!-- Write cpu-times
	375	IF ( myid == 0 ) THEN
	376	!
	377	!-- Re-store sums
	378	ALLOCATE( sum( SIZE( log_point ) ) )
	379	WHERE ( log_point%counts /= 0 )
	380	sum = log_point%sum
	381	ELSEWHERE
[1353]	382	sum = -1.0_wp
[1318]	383	ENDWHERE
	384
	385	!
	386	!-- Get total time in order to calculate CPU-time per gridpoint and timestep
	387	IF ( nr_timesteps_this_run /= 0 ) THEN
[1322]	388	average_cputime = log_point(1)%sum / REAL( (nx+1) * (ny+1) * nz, KIND=wp ) / &
	389	REAL( nr_timesteps_this_run, KIND=wp ) * 1E6_wp ! in micro-sec
[1318]	390	ELSE
[1353]	391	average_cputime = -1.0_wp
[1318]	392	ENDIF
	393
	394	!
	395	!-- Write cpu-times sorted by size
	396	CALL check_open( 18 )
	397	#if defined( __parallel )
	398	WRITE ( 18, 100 ) TRIM( run_description_header ), &
	399	numprocs * threads_per_task, pdims(1), pdims(2), &
	400	threads_per_task, nx+1, ny+1, nz, nr_timesteps_this_run, &
	401	average_cputime
	402
	403	IF ( num_acc_per_node /= 0 ) WRITE ( 18, 108 ) num_acc_per_node
	404	WRITE ( 18, 110 )
	405	#else
	406	WRITE ( 18, 100 ) TRIM( run_description_header ), &
	407	numprocs * threads_per_task, 1, 1, &
	408	threads_per_task, nx+1, ny+1, nz, nr_timesteps_this_run, &
	409	average_cputime
	410
	411	IF ( num_acc_per_node /= 0 ) WRITE ( 18, 109 ) num_acc_per_node
	412	WRITE ( 18, 110 )
	413	#endif
	414	DO
	415	ii = MAXLOC( sum )
	416	i = ii(1)
[1353]	417	IF ( sum(i) /= -1.0_wp ) THEN
[1318]	418	WRITE ( 18, 102 ) &
[1353]	419	log_point(i)%place, log_point(i)%sum, &
	420	log_point(i)%sum / log_point(1)%sum * 100.0_wp, &
[1318]	421	log_point(i)%counts, pe_min(i), pe_max(i), pe_rms(i)
[1353]	422	sum(i) = -1.0_wp
[1318]	423	ELSE
	424	EXIT
	425	ENDIF
	426	ENDDO
[1]	427	ENDIF
	428
	429
[1318]	430	!
	431	!-- The same procedure again for the individual measurements.
	432	!
	433	!-- Compute cpu-times in seconds
	434	log_point_s%mtime = log_point_s%mtime / norm
	435	log_point_s%sum = log_point_s%sum / norm
	436	log_point_s%vector = log_point_s%vector / norm
	437	WHERE ( log_point_s%counts /= 0 )
	438	log_point_s%mean = log_point_s%sum / log_point_s%counts
	439	END WHERE
	440
	441	!
	442	!-- Collect cpu-times from all PEs and calculate statistics
	443	#if defined( __parallel )
	444	!
	445	!-- Set barrier in order to avoid that PE0 receives log_point_s-data
	446	!-- while still busy with receiving log_point-data (see above)
	447	CALL MPI_BARRIER( comm2d, ierr )
	448	#endif
	449	IF ( myid == 0 ) THEN
	450	!
	451	!-- Initialize temporary arrays needed for statistics
	452	pe_min = log_point_s%sum
	453	pe_max = log_point_s%sum ! need to be set in case of 1 PE
[1353]	454	pe_rms = 0.0_wp
[1318]	455
	456	#if defined( __parallel )
	457	!
	458	!-- Receive data from all PEs
	459	DO i = 1, numprocs-1
	460	CALL MPI_RECV( pe_max(1), SIZE( log_point ), MPI_REAL, &
	461	MPI_ANY_SOURCE, MPI_ANY_TAG, comm2d, status, ierr )
	462	sender = status(MPI_SOURCE)
	463	pe_log_points(:,sender) = pe_max
	464	ENDDO
	465	pe_log_points(:,0) = log_point_s%sum ! Results from PE0
	466	!
	467	!-- Calculate mean of all PEs, store it on log_point_s%sum
	468	!-- and find minimum and maximum
	469	DO iii = 1, SIZE( log_point )
	470	DO i = 1, numprocs-1
	471	log_point_s(iii)%sum = log_point_s(iii)%sum + pe_log_points(iii,i)
	472	pe_min(iii) = MIN( pe_min(iii), pe_log_points(iii,i) )
	473	pe_max(iii) = MAX( pe_max(iii), pe_log_points(iii,i) )
	474	ENDDO
	475	log_point_s(iii)%sum = log_point_s(iii)%sum / numprocs
	476	!
	477	!-- Calculate rms
	478	DO i = 0, numprocs-1
[1353]	479	pe_rms(iii) = pe_rms(iii) + ( &
[1318]	480	pe_log_points(iii,i) - log_point_s(iii)%sum &
	481	)**2
	482	ENDDO
	483	pe_rms(iii) = SQRT( pe_rms(iii) / numprocs )
	484	ENDDO
	485	ELSE
	486	!
	487	!-- Send data to PE0 (pe_max is used as temporary storage to send
	488	!-- the data in order to avoid sending the data type log)
	489	pe_max = log_point_s%sum
	490	CALL MPI_SEND( pe_max(1), SIZE( log_point ), MPI_REAL, 0, 0, comm2d, &
	491	ierr )
	492	#endif
	493
	494	ENDIF
	495
	496	!
	497	!-- Write cpu-times
	498	IF ( myid == 0 ) THEN
	499	!
	500	!-- Re-store sums
	501	WHERE ( log_point_s%counts /= 0 )
	502	sum = log_point_s%sum
	503	ELSEWHERE
[1353]	504	sum = -1.0_wp
[1318]	505	ENDWHERE
	506
	507	!
	508	!-- Write cpu-times sorted by size
	509	WRITE ( 18, 101 )
	510	DO
	511	ii = MAXLOC( sum )
	512	i = ii(1)
[1353]	513	IF ( sum(i) /= -1.0_wp ) THEN
	514	WRITE ( 18, 102 ) &
	515	log_point_s(i)%place, log_point_s(i)%sum, &
	516	log_point_s(i)%sum / log_point(1)%sum * 100.0_wp, &
[1318]	517	log_point_s(i)%counts, pe_min(i), pe_max(i), pe_rms(i)
[1353]	518	sum(i) = -1.0_wp
[1318]	519	ELSE
	520	EXIT
	521	ENDIF
	522	ENDDO
	523
	524	!
	525	!-- Output of handling of MPI operations
	526	IF ( collective_wait ) THEN
	527	WRITE ( 18, 103 )
	528	ELSE
	529	WRITE ( 18, 104 )
	530	ENDIF
	531	IF ( cpu_log_barrierwait ) WRITE ( 18, 111 )
	532	IF ( synchronous_exchange ) THEN
	533	WRITE ( 18, 105 )
	534	ELSE
	535	WRITE ( 18, 106 )
	536	ENDIF
	537
	538	!
	539	!-- Empty lines in order to create a gap to the results of the model
	540	!-- continuation runs
	541	WRITE ( 18, 107 )
	542
	543	!
	544	!-- Unit 18 is not needed anymore
	545	CALL close_file( 18 )
	546
	547	ENDIF
	548
[1402]	549	CALL location_message( 'finished', .TRUE. )
[1318]	550
	551	100 FORMAT (A/11('-')//'CPU measures for ',I5,' PEs (',I5,'(x) * ',I5,'(y', &
	552	&') tasks *',I5,' threads):'// &
	553	'gridpoints (x/y/z): ',20X,I5,' * ',I5,' * ',I5/ &
	554	'nr of timesteps: ',22X,I6/ &
	555	'cpu time per grid point and timestep: ',5X,F8.5,' * 10**-6 s')
	556
	557	101 FORMAT (/'special measures:'/ &
	558	&'-----------------------------------------------------------', &
	559	&'--------------------')
	560
	561	102 FORMAT (A20,2X,F9.3,2X,F7.2,1X,I7,3(1X,F9.3))
	562	103 FORMAT (/'Barriers are set in front of collective operations')
	563	104 FORMAT (/'No barriers are set in front of collective operations')
	564	105 FORMAT (/'Exchange of ghostpoints via MPI_SENDRCV')
	565	106 FORMAT (/'Exchange of ghostpoints via MPI_ISEND/MPI_IRECV')
	566	107 FORMAT (//)
	567	108 FORMAT ('Accelerator boards per node: ',14X,I2)
	568	109 FORMAT ('Accelerator boards: ',23X,I2)
	569	110 FORMAT ('----------------------------------------------------------', &
	570	&'------------'//&
	571	&'place: mean counts min ', &
	572	&' max rms'/ &
	573	&' sec. % sec. ', &
	574	&' sec. sec.'/ &
	575	&'-----------------------------------------------------------', &
	576	&'-------------------')
	577	111 FORMAT (/'Barriers are set at beginning (start/continue) of measurements')
	578
	579	END SUBROUTINE cpu_statistics
	580
	581	END MODULE cpulog

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