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source: palm/trunk/SOURCE/cpulog_mod.f90 @ 2271

Last change on this file since 2271 was 2266, checked in by raasch, 7 years ago
bugfix for calculating cpu-time per gridpoint, nech related parts removed from subjob script
Property svn:keywords set to `Id`
File size: 21.8 KB

Rev	Line
[1850]	1	!> @file cpulog_mod.f90
[2000]	2	!------------------------------------------------------------------------------!
[1036]	3	! This file is part of PALM.
	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	!
[2101]	17	! Copyright 1997-2017 Leibniz Universitaet Hannover
[2000]	18	!------------------------------------------------------------------------------!
[1036]	19	!
[254]	20	! Current revisions:
[1]	21	! -----------------
[1403]	22	!
[2119]	23	!
[1321]	24	! Former revisions:
	25	! -----------------
	26	! $Id: cpulog_mod.f90 2266 2017-06-09 09:27:21Z sward $
[2266]	27	! bugfix: cpu-time per grid point is now calculated using ngp_3d in order to
	28	! avoid integer overflow,
	29	! some re-formatting
	30	!
	31	! 2119 2017-01-17 16:51:50Z raasch
[1321]	32	!
[2119]	33	! 2118 2017-01-17 16:38:49Z raasch
	34	! OpenACC relevant code removed
	35	!
[2001]	36	! 2000 2016-08-20 18:09:15Z knoop
	37	! Forced header and separation lines into 80 columns
	38	!
[1932]	39	! 1931 2016-06-10 12:06:59Z suehring
	40	! Adjustment in character length and format statement
	41	!
[1851]	42	! 1850 2016-04-08 13:29:27Z maronga
	43	! Module renamed
	44	!
	45	!
[1809]	46	! 1808 2016-04-05 19:44:00Z raasch
	47	! cpu measurements are done with standard FORTRAN routine on every machine
	48	!
[1683]	49	! 1682 2015-10-07 23:56:08Z knoop
	50	! Code annotations made doxygen readable
	51	!
[1403]	52	! 1402 2014-05-09 14:25:13Z raasch
	53	! location messages added
	54	!
[1370]	55	! 1369 2014-04-24 05:57:38Z raasch
	56	! routine description added
	57	!
[1354]	58	! 1353 2014-04-08 15:21:23Z heinze
	59	! REAL constants provided with KIND-attribute
	60	!
[1323]	61	! 1322 2014-03-20 16:38:49Z raasch
	62	! REAL functions provided with KIND-attribute
	63	!
[1321]	64	! 1320 2014-03-20 08:40:49Z raasch
[1320]	65	! ONLY-attribute added to USE-statements,
	66	! kind-parameters added to all INTEGER and REAL declaration statements,
	67	! kinds are defined in new module kinds,
	68	! revision history before 2012 removed,
	69	! comment fields (!:) to be used for variable explanations added to
	70	! all variable declaration statements
[1321]	71	!
[1319]	72	! 1318 2014-03-17 13:35:16Z raasch
	73	! former files/routines cpu_log and cpu_statistics combined to one module,
	74	! which also includes the former data module cpulog from the modules-file
	75	!
[1037]	76	! 1036 2012-10-22 13:43:42Z raasch
	77	! code put under GPL (PALM 3.9)
	78	!
[1]	79	! Revision 1.1 1997/07/24 11:12:29 raasch
	80	! Initial revision
	81	!
	82	!
	83	! Description:
	84	! ------------
[1682]	85	!> CPU-time measurements for any program part whatever. Results of the
	86	!> measurements are output at the end of the run in local file CPU_MEASURES.
	87	!>
	88	!> To measure the CPU-time (better to say the wallclock time) of a specific code
	89	!> segment, two calls of cpu_log have to be used as brackets in front and at the
	90	!> end of the segment:
	91	!>
	92	!> CALL cpu_log( log_point(n), 'any identifier', 'start' )
	93	!> ... code segment ...
	94	!> CALL cpu_log( log_point(n), 'any identifier', 'stop' )
	95	!>
	96	!> Parts of the code segment can be excluded from the measurement by additional
	97	!> call of cpu_log:
	98	!>
	99	!> ... first segment to be measured
	100	!> CALL cpu_log( log_point(n), 'any identifier', 'pause' )
	101	!> ... oart of segment to be excluded from measurement
	102	!> CALL cpu_log( log_point(n), 'any identifier', 'continue' )
	103	!> ... second segment to be mesasured
	104	!>
	105	!> n is an INTEGER within the interval [1,100] defining the id of the specific
	106	!> code segment, 'any identifier' is a string describing the code segment to be
	107	!> measured. It can be freely chosen and results will appear under this name in
	108	!> file CPU_MEASURES. ids can only be used once. If you like to do a
	109	!> measurement of a new part of the code, please look for an id which is unused
	110	!> ao far.
	111	!>
	112	!> d3par-parameter cpu_log_barrierwait can be used to set an MPI barrier at the
	113	!> beginning of the measurement (modus 'start' or 'continue'), to avoid that
	114	!> idle times (due to MPI calls in the code segment, which are
	115	!> waiting for other processes to be finished) affect the measurements.
	116	!> If barriers shall not be used at all, a fourth, optional parameter has to be
	117	!> given:
	118	!>
	119	!> CALL cpu_log( ..., ..., 'start', cpu_log_nowait )
	120	!>
	121	!> Variable log_point should be used for non-overlapping code segments, and they
	122	!> should sum up to the total cpu-time required by the complete run.
	123	!> Variable log_point_s can be used for any other special (s) measurements.
[3]	124	!------------------------------------------------------------------------------!
[1682]	125	MODULE cpulog
	126
[1]	127
[1320]	128	USE control_parameters, &
	129	ONLY: message_string, nr_timesteps_this_run, run_description_header, &
	130	synchronous_exchange
	131
	132	USE indices, &
[2266]	133	ONLY: ngp_3d, nx, ny, nz
[1320]	134
	135	USE kinds
	136
[1]	137	USE pegrid
	138
	139	IMPLICIT NONE
	140
[1318]	141	PRIVATE
[1320]	142	PUBLIC cpu_log, cpu_log_barrierwait, cpu_log_nowait, cpu_statistics, &
[1318]	143	initial_wallclock_time, log_point, log_point_s
[1]	144
[1318]	145	INTERFACE cpu_log
	146	MODULE PROCEDURE cpu_log
	147	END INTERFACE cpu_log
	148
	149	INTERFACE cpu_statistics
	150	MODULE PROCEDURE cpu_statistics
	151	END INTERFACE cpu_statistics
	152
[1682]	153	INTEGER(iwp), PARAMETER :: cpu_log_continue = 0 !<
	154	INTEGER(iwp), PARAMETER :: cpu_log_pause = 1 !<
	155	INTEGER(iwp), PARAMETER :: cpu_log_start = 2 !<
	156	INTEGER(iwp), PARAMETER :: cpu_log_stop = 3 !<
[1318]	157
[1682]	158	LOGICAL :: cpu_log_barrierwait = .FALSE. !<
	159	LOGICAL, PARAMETER :: cpu_log_nowait = .FALSE. !<
[1318]	160
[1682]	161	REAL(wp) :: initial_wallclock_time !<
[1318]	162
	163	TYPE logpoint
[1682]	164	REAL(wp) :: isum !<
	165	REAL(wp) :: ivect !<
	166	REAL(wp) :: mean !<
	167	REAL(wp) :: mtime !<
	168	REAL(wp) :: mtimevec !<
	169	REAL(wp) :: sum !<
	170	REAL(wp) :: vector !<
	171	INTEGER(iwp) :: counts !<
[1931]	172	CHARACTER (LEN=25) :: place !<
[1318]	173	END TYPE logpoint
	174
[1353]	175	TYPE(logpoint), DIMENSION(100) :: log_point = logpoint( 0.0_wp, 0.0_wp, &
	176	0.0_wp, 0.0_wp, 0.0_wp, 0.0_wp, 0.0_wp, &
	177	0, ' ' ), &
	178	log_point_s = logpoint( 0.0_wp, 0.0_wp, &
	179	0.0_wp, 0.0_wp, 0.0_wp, 0.0_wp, 0.0_wp, &
	180	0, ' ' )
[1318]	181
	182	SAVE
	183
	184	CONTAINS
	185
[1682]	186	!------------------------------------------------------------------------------!
	187	! Description:
	188	! ------------
	189	!> @todo Missing subroutine description.
	190	!------------------------------------------------------------------------------!
[1318]	191	SUBROUTINE cpu_log( log_event, place, modus, barrierwait )
	192
	193	IMPLICIT NONE
	194
[1682]	195	CHARACTER (LEN=*) :: modus !<
	196	CHARACTER (LEN=*) :: place !<
[1320]	197
[1682]	198	LOGICAL :: wait_allowed !<
	199	LOGICAL, OPTIONAL :: barrierwait !<
	200	LOGICAL, SAVE :: first = .TRUE. !<
[1320]	201
[1682]	202	REAL(wp) :: mtime = 0.0_wp !<
	203	REAL(wp) :: mtimevec = 0.0_wp !<
	204	TYPE(logpoint) :: log_event !<
[1318]	205
[1682]	206	INTEGER(idp) :: count !<
	207	INTEGER(idp) :: count_rate !<
[1]	208
	209
	210	!
[1318]	211	!-- Initialize and check, respectively, point of measurement
	212	IF ( log_event%place == ' ' ) THEN
	213	log_event%place = place
	214	ELSEIF ( log_event%place /= place ) THEN
[1320]	215	WRITE( message_string, * ) 'wrong argument & expected: ', &
[1318]	216	TRIM(log_event%place), ' given: ', TRIM( place )
	217	CALL message( 'cpu_log', 'PA0174', 1, 2, 0, 6, 0 )
	218	ENDIF
[1]	219
	220	!
[1318]	221	!-- Determine, if barriers are allowed to set
	222	IF ( PRESENT( barrierwait ) ) THEN
	223	wait_allowed = barrierwait
	224	ELSE
	225	wait_allowed = .TRUE.
	226	ENDIF
	227
	228	!
	229	!-- MPI barrier, if requested, in order to avoid measuring wait times
	230	!-- caused by MPI routines waiting for other MPI routines of other
	231	!-- PEs that have not yet finished
	232	#if defined( __parallel )
[1320]	233	IF ( cpu_log_barrierwait .AND. wait_allowed .AND. &
[1318]	234	( modus == 'start' .OR. modus == 'continue' ) ) THEN
	235	CALL MPI_BARRIER( comm2d, ierr )
	236	ENDIF
	237	#endif
	238
	239	!
	240	!-- Take current time
	241	CALL SYSTEM_CLOCK( count, count_rate )
[1322]	242	mtime = REAL( count, KIND=wp ) / REAL( count_rate, KIND=wp )
[1]	243
	244	!
[1318]	245	!-- Start, stop or pause measurement
	246	IF ( modus == 'start' .OR. modus == 'continue' ) THEN
	247	log_event%mtime = mtime
	248	log_event%mtimevec = mtimevec
	249	ELSEIF ( modus == 'pause' ) THEN
	250	IF ( ( mtime - log_event%mtime ) < 0.0 .AND. first ) THEN
[1320]	251	WRITE( message_string, * ) 'negative time interval occured', &
	252	' &PE',myid,' L=PAUSE "',TRIM(log_event%place), &
	253	'" new=', mtime,' last=',log_event%mtime
[1318]	254	CALL message( 'cpu_log', 'PA0176', 0, 1, -1, 6, 0 )
	255	first = .FALSE.
	256	ENDIF
	257	log_event%isum = log_event%isum + mtime - log_event%mtime
	258	log_event%ivect = log_event%ivect + mtimevec - log_event%mtimevec
	259	ELSEIF ( modus == 'stop' ) THEN
[1320]	260	IF ( ( mtime - log_event%mtime + log_event%isum ) < 0.0 .AND. &
[1318]	261	first ) THEN
[1320]	262	WRITE( message_string, * ) 'negative time interval occured', &
[2266]	263	' &PE',myid,' L=STOP "',TRIM(log_event%place),'" new=', &
	264	mtime,' last=',log_event%mtime,' isum=',log_event%isum
[1318]	265	CALL message( 'cpu_log', 'PA0177', 0, 1, -1, 6, 0 )
	266	first = .FALSE.
	267	ENDIF
	268	log_event%mtime = mtime - log_event%mtime + log_event%isum
	269	log_event%mtimevec = mtimevec - log_event%mtimevec + log_event%ivect
	270	log_event%sum = log_event%sum + log_event%mtime
	271	IF ( log_event%sum < 0.0 .AND. first ) THEN
[1320]	272	WRITE( message_string, * ) 'negative time interval occured', &
[2266]	273	' &PE',myid,' L=STOP "',TRIM(log_event%place),'" sum=', &
	274	log_event%sum,' mtime=',log_event%mtime
[1318]	275	CALL message( 'cpu_log', 'PA0178', 0, 1, -1, 6, 0 )
	276	first = .FALSE.
	277	ENDIF
	278	log_event%vector = log_event%vector + log_event%mtimevec
	279	log_event%counts = log_event%counts + 1
[1353]	280	log_event%isum = 0.0_wp
	281	log_event%ivect = 0.0_wp
[1318]	282	ELSE
[2266]	283	message_string = 'unknown modus of time measurement: ' // &
	284	TRIM( modus )
[1318]	285	CALL message( 'cpu_log', 'PA0179', 0, 1, -1, 6, 0 )
[1]	286	ENDIF
[1318]	287
	288	END SUBROUTINE cpu_log
	289
	290
	291	!------------------------------------------------------------------------------!
	292	! Description:
	293	! ------------
[1682]	294	!> Analysis and output of the cpu-times measured. All PE results are collected
	295	!> on PE0 in order to calculate the mean cpu-time over all PEs and other
	296	!> statistics. The output is sorted according to the amount of cpu-time consumed
	297	!> and output on PE0.
[1318]	298	!------------------------------------------------------------------------------!
[1682]	299
	300	SUBROUTINE cpu_statistics
[1318]	301
	302	IMPLICIT NONE
	303
[1682]	304	INTEGER(iwp) :: i !<
	305	INTEGER(iwp) :: ii(1) !<
	306	INTEGER(iwp) :: iii !<
	307	INTEGER(iwp) :: sender !<
	308	REAL(wp) :: average_cputime !<
	309	REAL(wp), SAVE :: norm = 1.0_wp !<
	310	REAL(wp), DIMENSION(:), ALLOCATABLE :: pe_max !<
	311	REAL(wp), DIMENSION(:), ALLOCATABLE :: pe_min !<
	312	REAL(wp), DIMENSION(:), ALLOCATABLE :: pe_rms !<
	313	REAL(wp), DIMENSION(:), ALLOCATABLE :: sum !<
	314	REAL(wp), DIMENSION(:,:), ALLOCATABLE :: pe_log_points !<
[1318]	315
	316
[1402]	317	CALL location_message( 'calculating cpu statistics', .FALSE. )
	318
[1318]	319	!
	320	!-- Compute cpu-times in seconds
	321	log_point%mtime = log_point%mtime / norm
	322	log_point%sum = log_point%sum / norm
	323	log_point%vector = log_point%vector / norm
	324	WHERE ( log_point%counts /= 0 )
	325	log_point%mean = log_point%sum / log_point%counts
	326	END WHERE
	327
	328
	329	!
	330	!-- Collect cpu-times from all PEs and calculate statistics
	331	IF ( myid == 0 ) THEN
	332	!
	333	!-- Allocate and initialize temporary arrays needed for statistics
[1320]	334	ALLOCATE( pe_max( SIZE( log_point ) ), pe_min( SIZE( log_point ) ), &
	335	pe_rms( SIZE( log_point ) ), &
[1318]	336	pe_log_points( SIZE( log_point ), 0:numprocs-1 ) )
	337	pe_min = log_point%sum
	338	pe_max = log_point%sum ! need to be set in case of 1 PE
[1353]	339	pe_rms = 0.0_wp
[1318]	340
	341	#if defined( __parallel )
	342	!
	343	!-- Receive data from all PEs
	344	DO i = 1, numprocs-1
[1320]	345	CALL MPI_RECV( pe_max(1), SIZE( log_point ), MPI_REAL, &
[1318]	346	i, i, comm2d, status, ierr )
	347	sender = status(MPI_SOURCE)
	348	pe_log_points(:,sender) = pe_max
	349	ENDDO
	350	pe_log_points(:,0) = log_point%sum ! Results from PE0
	351	!
	352	!-- Calculate mean of all PEs, store it on log_point%sum
	353	!-- and find minimum and maximum
	354	DO iii = 1, SIZE( log_point )
	355	DO i = 1, numprocs-1
	356	log_point(iii)%sum = log_point(iii)%sum + pe_log_points(iii,i)
	357	pe_min(iii) = MIN( pe_min(iii), pe_log_points(iii,i) )
	358	pe_max(iii) = MAX( pe_max(iii), pe_log_points(iii,i) )
	359	ENDDO
	360	log_point(iii)%sum = log_point(iii)%sum / numprocs
	361	!
	362	!-- Calculate rms
	363	DO i = 0, numprocs-1
[1320]	364	pe_rms(iii) = pe_rms(iii) + ( &
	365	pe_log_points(iii,i) - log_point(iii)%sum &
[1318]	366	)**2
	367	ENDDO
	368	pe_rms(iii) = SQRT( pe_rms(iii) / numprocs )
	369	ENDDO
	370	ELSE
	371	!
	372	!-- Send data to PE0 (pe_max is used as temporary storage to send
	373	!-- the data in order to avoid sending the data type log)
	374	ALLOCATE( pe_max( SIZE( log_point ) ) )
	375	pe_max = log_point%sum
[2266]	376	CALL MPI_SEND( pe_max(1), SIZE( log_point ), MPI_REAL, 0, myid, &
	377	comm2d, ierr )
[1318]	378	#endif
	379
[1]	380	ENDIF
[1318]	381
	382	!
	383	!-- Write cpu-times
	384	IF ( myid == 0 ) THEN
	385	!
	386	!-- Re-store sums
	387	ALLOCATE( sum( SIZE( log_point ) ) )
	388	WHERE ( log_point%counts /= 0 )
	389	sum = log_point%sum
	390	ELSEWHERE
[1353]	391	sum = -1.0_wp
[1318]	392	ENDWHERE
	393
	394	!
[2266]	395	!-- Get total time in order to calculate CPU-time per gridpoint and
	396	!-- timestep
[1318]	397	IF ( nr_timesteps_this_run /= 0 ) THEN
[2266]	398	average_cputime = log_point(1)%sum / REAL( ngp_3d(0), KIND=wp ) / &
	399	REAL( nr_timesteps_this_run, KIND=wp ) * 1E6_wp
	400	! in micro-sec
[1318]	401	ELSE
[1353]	402	average_cputime = -1.0_wp
[1318]	403	ENDIF
	404
	405	!
	406	!-- Write cpu-times sorted by size
	407	CALL check_open( 18 )
	408	#if defined( __parallel )
[2266]	409	WRITE ( 18, 100 ) TRIM( run_description_header ), &
	410	numprocs * threads_per_task, pdims(1), pdims(2), &
	411	threads_per_task, nx+1, ny+1, nz, &
	412	nr_timesteps_this_run, average_cputime
[1318]	413
	414	WRITE ( 18, 110 )
	415	#else
[2266]	416	WRITE ( 18, 100 ) TRIM( run_description_header ), &
	417	numprocs * threads_per_task, 1, 1, &
	418	threads_per_task, nx+1, ny+1, nz, &
	419	nr_timesteps_this_run, average_cputime
[1318]	420
	421	WRITE ( 18, 110 )
	422	#endif
	423	DO
	424	ii = MAXLOC( sum )
	425	i = ii(1)
[1353]	426	IF ( sum(i) /= -1.0_wp ) THEN
[1318]	427	WRITE ( 18, 102 ) &
[1353]	428	log_point(i)%place, log_point(i)%sum, &
	429	log_point(i)%sum / log_point(1)%sum * 100.0_wp, &
[1318]	430	log_point(i)%counts, pe_min(i), pe_max(i), pe_rms(i)
[1353]	431	sum(i) = -1.0_wp
[1318]	432	ELSE
	433	EXIT
	434	ENDIF
	435	ENDDO
[1]	436	ENDIF
	437
	438
[1318]	439	!
	440	!-- The same procedure again for the individual measurements.
	441	!
	442	!-- Compute cpu-times in seconds
	443	log_point_s%mtime = log_point_s%mtime / norm
	444	log_point_s%sum = log_point_s%sum / norm
	445	log_point_s%vector = log_point_s%vector / norm
	446	WHERE ( log_point_s%counts /= 0 )
	447	log_point_s%mean = log_point_s%sum / log_point_s%counts
	448	END WHERE
	449
	450	!
	451	!-- Collect cpu-times from all PEs and calculate statistics
	452	#if defined( __parallel )
	453	!
	454	!-- Set barrier in order to avoid that PE0 receives log_point_s-data
	455	!-- while still busy with receiving log_point-data (see above)
	456	CALL MPI_BARRIER( comm2d, ierr )
	457	#endif
	458	IF ( myid == 0 ) THEN
	459	!
	460	!-- Initialize temporary arrays needed for statistics
	461	pe_min = log_point_s%sum
	462	pe_max = log_point_s%sum ! need to be set in case of 1 PE
[1353]	463	pe_rms = 0.0_wp
[1318]	464
	465	#if defined( __parallel )
	466	!
	467	!-- Receive data from all PEs
	468	DO i = 1, numprocs-1
	469	CALL MPI_RECV( pe_max(1), SIZE( log_point ), MPI_REAL, &
	470	MPI_ANY_SOURCE, MPI_ANY_TAG, comm2d, status, ierr )
	471	sender = status(MPI_SOURCE)
	472	pe_log_points(:,sender) = pe_max
	473	ENDDO
	474	pe_log_points(:,0) = log_point_s%sum ! Results from PE0
	475	!
	476	!-- Calculate mean of all PEs, store it on log_point_s%sum
	477	!-- and find minimum and maximum
	478	DO iii = 1, SIZE( log_point )
	479	DO i = 1, numprocs-1
[2266]	480	log_point_s(iii)%sum = log_point_s(iii)%sum + &
	481	pe_log_points(iii,i)
[1318]	482	pe_min(iii) = MIN( pe_min(iii), pe_log_points(iii,i) )
	483	pe_max(iii) = MAX( pe_max(iii), pe_log_points(iii,i) )
	484	ENDDO
	485	log_point_s(iii)%sum = log_point_s(iii)%sum / numprocs
	486	!
	487	!-- Calculate rms
	488	DO i = 0, numprocs-1
[1353]	489	pe_rms(iii) = pe_rms(iii) + ( &
[2266]	490	pe_log_points(iii,i) - log_point_s(iii)%sum &
[1318]	491	)**2
	492	ENDDO
	493	pe_rms(iii) = SQRT( pe_rms(iii) / numprocs )
	494	ENDDO
	495	ELSE
	496	!
	497	!-- Send data to PE0 (pe_max is used as temporary storage to send
	498	!-- the data in order to avoid sending the data type log)
	499	pe_max = log_point_s%sum
	500	CALL MPI_SEND( pe_max(1), SIZE( log_point ), MPI_REAL, 0, 0, comm2d, &
	501	ierr )
	502	#endif
	503
	504	ENDIF
	505
	506	!
	507	!-- Write cpu-times
	508	IF ( myid == 0 ) THEN
	509	!
	510	!-- Re-store sums
	511	WHERE ( log_point_s%counts /= 0 )
	512	sum = log_point_s%sum
	513	ELSEWHERE
[1353]	514	sum = -1.0_wp
[1318]	515	ENDWHERE
	516
	517	!
	518	!-- Write cpu-times sorted by size
	519	WRITE ( 18, 101 )
	520	DO
	521	ii = MAXLOC( sum )
	522	i = ii(1)
[1353]	523	IF ( sum(i) /= -1.0_wp ) THEN
	524	WRITE ( 18, 102 ) &
	525	log_point_s(i)%place, log_point_s(i)%sum, &
	526	log_point_s(i)%sum / log_point(1)%sum * 100.0_wp, &
[1318]	527	log_point_s(i)%counts, pe_min(i), pe_max(i), pe_rms(i)
[1353]	528	sum(i) = -1.0_wp
[1318]	529	ELSE
	530	EXIT
	531	ENDIF
	532	ENDDO
	533
	534	!
	535	!-- Output of handling of MPI operations
	536	IF ( collective_wait ) THEN
	537	WRITE ( 18, 103 )
	538	ELSE
	539	WRITE ( 18, 104 )
	540	ENDIF
	541	IF ( cpu_log_barrierwait ) WRITE ( 18, 111 )
	542	IF ( synchronous_exchange ) THEN
	543	WRITE ( 18, 105 )
	544	ELSE
	545	WRITE ( 18, 106 )
	546	ENDIF
	547
	548	!
	549	!-- Empty lines in order to create a gap to the results of the model
	550	!-- continuation runs
	551	WRITE ( 18, 107 )
	552
	553	!
	554	!-- Unit 18 is not needed anymore
	555	CALL close_file( 18 )
	556
	557	ENDIF
	558
[1402]	559	CALL location_message( 'finished', .TRUE. )
[1318]	560
	561	100 FORMAT (A/11('-')//'CPU measures for ',I5,' PEs (',I5,'(x) * ',I5,'(y', &
	562	&') tasks *',I5,' threads):'// &
	563	'gridpoints (x/y/z): ',20X,I5,' * ',I5,' * ',I5/ &
	564	'nr of timesteps: ',22X,I6/ &
	565	'cpu time per grid point and timestep: ',5X,F8.5,' * 10**-6 s')
	566
	567	101 FORMAT (/'special measures:'/ &
	568	&'-----------------------------------------------------------', &
[1931]	569	&'------------------------')
[1318]	570
[1931]	571	102 FORMAT (A25,2X,F9.3,2X,F7.2,1X,I7,3(1X,F9.3))
[1318]	572	103 FORMAT (/'Barriers are set in front of collective operations')
	573	104 FORMAT (/'No barriers are set in front of collective operations')
	574	105 FORMAT (/'Exchange of ghostpoints via MPI_SENDRCV')
	575	106 FORMAT (/'Exchange of ghostpoints via MPI_ISEND/MPI_IRECV')
	576	107 FORMAT (//)
[1931]	577	110 FORMAT ('-------------------------------------------------------------', &
	578	&'---------'//&
	579	&'place: mean counts min ',&
[1318]	580	&' max rms'/ &
[1931]	581	&' sec. % sec. ', &
[1318]	582	&' sec. sec.'/ &
[1931]	583	&'-----------------------------------------------------------', &
	584	&'------------------------')
[1318]	585	111 FORMAT (/'Barriers are set at beginning (start/continue) of measurements')
	586
	587	END SUBROUTINE cpu_statistics
	588
	589	END MODULE cpulog

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