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source: palm/trunk/SOURCE/cpulog_mod.f90 @ 2249

Last change on this file since 2249 was 2119, checked in by raasch, 8 years ago
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[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 2119 2017-01-17 16:51:50Z sward $
	27	!
[2119]	28	! 2118 2017-01-17 16:38:49Z raasch
	29	! OpenACC relevant code removed
	30	!
[2001]	31	! 2000 2016-08-20 18:09:15Z knoop
	32	! Forced header and separation lines into 80 columns
	33	!
[1932]	34	! 1931 2016-06-10 12:06:59Z suehring
	35	! Adjustment in character length and format statement
	36	!
[1851]	37	! 1850 2016-04-08 13:29:27Z maronga
	38	! Module renamed
	39	!
	40	!
[1809]	41	! 1808 2016-04-05 19:44:00Z raasch
	42	! cpu measurements are done with standard FORTRAN routine on every machine
	43	!
[1683]	44	! 1682 2015-10-07 23:56:08Z knoop
	45	! Code annotations made doxygen readable
	46	!
[1403]	47	! 1402 2014-05-09 14:25:13Z raasch
	48	! location messages added
	49	!
[1370]	50	! 1369 2014-04-24 05:57:38Z raasch
	51	! routine description added
	52	!
[1354]	53	! 1353 2014-04-08 15:21:23Z heinze
	54	! REAL constants provided with KIND-attribute
	55	!
[1323]	56	! 1322 2014-03-20 16:38:49Z raasch
	57	! REAL functions provided with KIND-attribute
	58	!
[1321]	59	! 1320 2014-03-20 08:40:49Z raasch
[1320]	60	! ONLY-attribute added to USE-statements,
	61	! kind-parameters added to all INTEGER and REAL declaration statements,
	62	! kinds are defined in new module kinds,
	63	! revision history before 2012 removed,
	64	! comment fields (!:) to be used for variable explanations added to
	65	! all variable declaration statements
[1321]	66	!
[1319]	67	! 1318 2014-03-17 13:35:16Z raasch
	68	! former files/routines cpu_log and cpu_statistics combined to one module,
	69	! which also includes the former data module cpulog from the modules-file
	70	!
[1037]	71	! 1036 2012-10-22 13:43:42Z raasch
	72	! code put under GPL (PALM 3.9)
	73	!
[1]	74	! Revision 1.1 1997/07/24 11:12:29 raasch
	75	! Initial revision
	76	!
	77	!
	78	! Description:
	79	! ------------
[1682]	80	!> CPU-time measurements for any program part whatever. Results of the
	81	!> measurements are output at the end of the run in local file CPU_MEASURES.
	82	!>
	83	!> To measure the CPU-time (better to say the wallclock time) of a specific code
	84	!> segment, two calls of cpu_log have to be used as brackets in front and at the
	85	!> end of the segment:
	86	!>
	87	!> CALL cpu_log( log_point(n), 'any identifier', 'start' )
	88	!> ... code segment ...
	89	!> CALL cpu_log( log_point(n), 'any identifier', 'stop' )
	90	!>
	91	!> Parts of the code segment can be excluded from the measurement by additional
	92	!> call of cpu_log:
	93	!>
	94	!> ... first segment to be measured
	95	!> CALL cpu_log( log_point(n), 'any identifier', 'pause' )
	96	!> ... oart of segment to be excluded from measurement
	97	!> CALL cpu_log( log_point(n), 'any identifier', 'continue' )
	98	!> ... second segment to be mesasured
	99	!>
	100	!> n is an INTEGER within the interval [1,100] defining the id of the specific
	101	!> code segment, 'any identifier' is a string describing the code segment to be
	102	!> measured. It can be freely chosen and results will appear under this name in
	103	!> file CPU_MEASURES. ids can only be used once. If you like to do a
	104	!> measurement of a new part of the code, please look for an id which is unused
	105	!> ao far.
	106	!>
	107	!> d3par-parameter cpu_log_barrierwait can be used to set an MPI barrier at the
	108	!> beginning of the measurement (modus 'start' or 'continue'), to avoid that
	109	!> idle times (due to MPI calls in the code segment, which are
	110	!> waiting for other processes to be finished) affect the measurements.
	111	!> If barriers shall not be used at all, a fourth, optional parameter has to be
	112	!> given:
	113	!>
	114	!> CALL cpu_log( ..., ..., 'start', cpu_log_nowait )
	115	!>
	116	!> Variable log_point should be used for non-overlapping code segments, and they
	117	!> should sum up to the total cpu-time required by the complete run.
	118	!> Variable log_point_s can be used for any other special (s) measurements.
[3]	119	!------------------------------------------------------------------------------!
[1682]	120	MODULE cpulog
	121
[1]	122
[1320]	123	USE control_parameters, &
	124	ONLY: message_string, nr_timesteps_this_run, run_description_header, &
	125	synchronous_exchange
	126
	127	USE indices, &
	128	ONLY: nx, ny, nz
	129
	130	USE kinds
	131
[1]	132	USE pegrid
	133
	134	IMPLICIT NONE
	135
[1318]	136	PRIVATE
[1320]	137	PUBLIC cpu_log, cpu_log_barrierwait, cpu_log_nowait, cpu_statistics, &
[1318]	138	initial_wallclock_time, log_point, log_point_s
[1]	139
[1318]	140	INTERFACE cpu_log
	141	MODULE PROCEDURE cpu_log
	142	END INTERFACE cpu_log
	143
	144	INTERFACE cpu_statistics
	145	MODULE PROCEDURE cpu_statistics
	146	END INTERFACE cpu_statistics
	147
[1682]	148	INTEGER(iwp), PARAMETER :: cpu_log_continue = 0 !<
	149	INTEGER(iwp), PARAMETER :: cpu_log_pause = 1 !<
	150	INTEGER(iwp), PARAMETER :: cpu_log_start = 2 !<
	151	INTEGER(iwp), PARAMETER :: cpu_log_stop = 3 !<
[1318]	152
[1682]	153	LOGICAL :: cpu_log_barrierwait = .FALSE. !<
	154	LOGICAL, PARAMETER :: cpu_log_nowait = .FALSE. !<
[1318]	155
[1682]	156	REAL(wp) :: initial_wallclock_time !<
[1318]	157
	158	TYPE logpoint
[1682]	159	REAL(wp) :: isum !<
	160	REAL(wp) :: ivect !<
	161	REAL(wp) :: mean !<
	162	REAL(wp) :: mtime !<
	163	REAL(wp) :: mtimevec !<
	164	REAL(wp) :: sum !<
	165	REAL(wp) :: vector !<
	166	INTEGER(iwp) :: counts !<
[1931]	167	CHARACTER (LEN=25) :: place !<
[1318]	168	END TYPE logpoint
	169
[1353]	170	TYPE(logpoint), DIMENSION(100) :: log_point = logpoint( 0.0_wp, 0.0_wp, &
	171	0.0_wp, 0.0_wp, 0.0_wp, 0.0_wp, 0.0_wp, &
	172	0, ' ' ), &
	173	log_point_s = logpoint( 0.0_wp, 0.0_wp, &
	174	0.0_wp, 0.0_wp, 0.0_wp, 0.0_wp, 0.0_wp, &
	175	0, ' ' )
[1318]	176
	177	SAVE
	178
	179	CONTAINS
	180
[1682]	181	!------------------------------------------------------------------------------!
	182	! Description:
	183	! ------------
	184	!> @todo Missing subroutine description.
	185	!------------------------------------------------------------------------------!
[1318]	186	SUBROUTINE cpu_log( log_event, place, modus, barrierwait )
	187
	188	IMPLICIT NONE
	189
[1682]	190	CHARACTER (LEN=*) :: modus !<
	191	CHARACTER (LEN=*) :: place !<
[1320]	192
[1682]	193	LOGICAL :: wait_allowed !<
	194	LOGICAL, OPTIONAL :: barrierwait !<
	195	LOGICAL, SAVE :: first = .TRUE. !<
[1320]	196
[1682]	197	REAL(wp) :: mtime = 0.0_wp !<
	198	REAL(wp) :: mtimevec = 0.0_wp !<
	199	TYPE(logpoint) :: log_event !<
[1318]	200
[1682]	201	INTEGER(idp) :: count !<
	202	INTEGER(idp) :: count_rate !<
[1]	203
	204
	205	!
[1318]	206	!-- Initialize and check, respectively, point of measurement
	207	IF ( log_event%place == ' ' ) THEN
	208	log_event%place = place
	209	ELSEIF ( log_event%place /= place ) THEN
[1320]	210	WRITE( message_string, * ) 'wrong argument & expected: ', &
[1318]	211	TRIM(log_event%place), ' given: ', TRIM( place )
	212	CALL message( 'cpu_log', 'PA0174', 1, 2, 0, 6, 0 )
	213	ENDIF
[1]	214
	215	!
[1318]	216	!-- Determine, if barriers are allowed to set
	217	IF ( PRESENT( barrierwait ) ) THEN
	218	wait_allowed = barrierwait
	219	ELSE
	220	wait_allowed = .TRUE.
	221	ENDIF
	222
	223	!
	224	!-- MPI barrier, if requested, in order to avoid measuring wait times
	225	!-- caused by MPI routines waiting for other MPI routines of other
	226	!-- PEs that have not yet finished
	227	#if defined( __parallel )
[1320]	228	IF ( cpu_log_barrierwait .AND. wait_allowed .AND. &
[1318]	229	( modus == 'start' .OR. modus == 'continue' ) ) THEN
	230	CALL MPI_BARRIER( comm2d, ierr )
	231	ENDIF
	232	#endif
	233
	234	!
	235	!-- Take current time
	236	CALL SYSTEM_CLOCK( count, count_rate )
[1322]	237	mtime = REAL( count, KIND=wp ) / REAL( count_rate, KIND=wp )
[1]	238
	239	!
[1318]	240	!-- Start, stop or pause measurement
	241	IF ( modus == 'start' .OR. modus == 'continue' ) THEN
	242	log_event%mtime = mtime
	243	log_event%mtimevec = mtimevec
	244	ELSEIF ( modus == 'pause' ) THEN
	245	IF ( ( mtime - log_event%mtime ) < 0.0 .AND. first ) THEN
[1320]	246	WRITE( message_string, * ) 'negative time interval occured', &
	247	' &PE',myid,' L=PAUSE "',TRIM(log_event%place), &
	248	'" new=', mtime,' last=',log_event%mtime
[1318]	249	CALL message( 'cpu_log', 'PA0176', 0, 1, -1, 6, 0 )
	250	first = .FALSE.
	251	ENDIF
	252	log_event%isum = log_event%isum + mtime - log_event%mtime
	253	log_event%ivect = log_event%ivect + mtimevec - log_event%mtimevec
	254	ELSEIF ( modus == 'stop' ) THEN
[1320]	255	IF ( ( mtime - log_event%mtime + log_event%isum ) < 0.0 .AND. &
[1318]	256	first ) THEN
[1320]	257	WRITE( message_string, * ) 'negative time interval occured', &
[1318]	258	' &PE',myid,' L=STOP "',TRIM(log_event%place),'" new=', &
	259	mtime,' last=',log_event%mtime,' isum=',log_event%isum
	260	CALL message( 'cpu_log', 'PA0177', 0, 1, -1, 6, 0 )
	261	first = .FALSE.
	262	ENDIF
	263	log_event%mtime = mtime - log_event%mtime + log_event%isum
	264	log_event%mtimevec = mtimevec - log_event%mtimevec + log_event%ivect
	265	log_event%sum = log_event%sum + log_event%mtime
	266	IF ( log_event%sum < 0.0 .AND. first ) THEN
[1320]	267	WRITE( message_string, * ) 'negative time interval occured', &
[1318]	268	' &PE',myid,' L=STOP "',TRIM(log_event%place),'" sum=', &
	269	log_event%sum,' mtime=',log_event%mtime
	270	CALL message( 'cpu_log', 'PA0178', 0, 1, -1, 6, 0 )
	271	first = .FALSE.
	272	ENDIF
	273	log_event%vector = log_event%vector + log_event%mtimevec
	274	log_event%counts = log_event%counts + 1
[1353]	275	log_event%isum = 0.0_wp
	276	log_event%ivect = 0.0_wp
[1318]	277	ELSE
	278	message_string = 'unknown modus of time measurement: ' // TRIM( modus )
	279	CALL message( 'cpu_log', 'PA0179', 0, 1, -1, 6, 0 )
[1]	280	ENDIF
[1318]	281
	282	END SUBROUTINE cpu_log
	283
	284
	285	!------------------------------------------------------------------------------!
	286	! Description:
	287	! ------------
[1682]	288	!> Analysis and output of the cpu-times measured. All PE results are collected
	289	!> on PE0 in order to calculate the mean cpu-time over all PEs and other
	290	!> statistics. The output is sorted according to the amount of cpu-time consumed
	291	!> and output on PE0.
[1318]	292	!------------------------------------------------------------------------------!
[1682]	293
	294	SUBROUTINE cpu_statistics
[1318]	295
	296	IMPLICIT NONE
	297
[1682]	298	INTEGER(iwp) :: i !<
	299	INTEGER(iwp) :: ii(1) !<
	300	INTEGER(iwp) :: iii !<
	301	INTEGER(iwp) :: sender !<
	302	REAL(wp) :: average_cputime !<
	303	REAL(wp), SAVE :: norm = 1.0_wp !<
	304	REAL(wp), DIMENSION(:), ALLOCATABLE :: pe_max !<
	305	REAL(wp), DIMENSION(:), ALLOCATABLE :: pe_min !<
	306	REAL(wp), DIMENSION(:), ALLOCATABLE :: pe_rms !<
	307	REAL(wp), DIMENSION(:), ALLOCATABLE :: sum !<
	308	REAL(wp), DIMENSION(:,:), ALLOCATABLE :: pe_log_points !<
[1318]	309
	310
[1402]	311	CALL location_message( 'calculating cpu statistics', .FALSE. )
	312
[1318]	313	!
	314	!-- Compute cpu-times in seconds
	315	log_point%mtime = log_point%mtime / norm
	316	log_point%sum = log_point%sum / norm
	317	log_point%vector = log_point%vector / norm
	318	WHERE ( log_point%counts /= 0 )
	319	log_point%mean = log_point%sum / log_point%counts
	320	END WHERE
	321
	322
	323	!
	324	!-- Collect cpu-times from all PEs and calculate statistics
	325	IF ( myid == 0 ) THEN
	326	!
	327	!-- Allocate and initialize temporary arrays needed for statistics
[1320]	328	ALLOCATE( pe_max( SIZE( log_point ) ), pe_min( SIZE( log_point ) ), &
	329	pe_rms( SIZE( log_point ) ), &
[1318]	330	pe_log_points( SIZE( log_point ), 0:numprocs-1 ) )
	331	pe_min = log_point%sum
	332	pe_max = log_point%sum ! need to be set in case of 1 PE
[1353]	333	pe_rms = 0.0_wp
[1318]	334
	335	#if defined( __parallel )
	336	!
	337	!-- Receive data from all PEs
	338	DO i = 1, numprocs-1
[1320]	339	CALL MPI_RECV( pe_max(1), SIZE( log_point ), MPI_REAL, &
[1318]	340	i, i, comm2d, status, ierr )
	341	sender = status(MPI_SOURCE)
	342	pe_log_points(:,sender) = pe_max
	343	ENDDO
	344	pe_log_points(:,0) = log_point%sum ! Results from PE0
	345	!
	346	!-- Calculate mean of all PEs, store it on log_point%sum
	347	!-- and find minimum and maximum
	348	DO iii = 1, SIZE( log_point )
	349	DO i = 1, numprocs-1
	350	log_point(iii)%sum = log_point(iii)%sum + pe_log_points(iii,i)
	351	pe_min(iii) = MIN( pe_min(iii), pe_log_points(iii,i) )
	352	pe_max(iii) = MAX( pe_max(iii), pe_log_points(iii,i) )
	353	ENDDO
	354	log_point(iii)%sum = log_point(iii)%sum / numprocs
	355	!
	356	!-- Calculate rms
	357	DO i = 0, numprocs-1
[1320]	358	pe_rms(iii) = pe_rms(iii) + ( &
	359	pe_log_points(iii,i) - log_point(iii)%sum &
[1318]	360	)**2
	361	ENDDO
	362	pe_rms(iii) = SQRT( pe_rms(iii) / numprocs )
	363	ENDDO
	364	ELSE
	365	!
	366	!-- Send data to PE0 (pe_max is used as temporary storage to send
	367	!-- the data in order to avoid sending the data type log)
	368	ALLOCATE( pe_max( SIZE( log_point ) ) )
	369	pe_max = log_point%sum
	370	CALL MPI_SEND( pe_max(1), SIZE( log_point ), MPI_REAL, 0, myid, comm2d, &
	371	ierr )
	372	#endif
	373
[1]	374	ENDIF
[1318]	375
	376	!
	377	!-- Write cpu-times
	378	IF ( myid == 0 ) THEN
	379	!
	380	!-- Re-store sums
	381	ALLOCATE( sum( SIZE( log_point ) ) )
	382	WHERE ( log_point%counts /= 0 )
	383	sum = log_point%sum
	384	ELSEWHERE
[1353]	385	sum = -1.0_wp
[1318]	386	ENDWHERE
	387
	388	!
	389	!-- Get total time in order to calculate CPU-time per gridpoint and timestep
	390	IF ( nr_timesteps_this_run /= 0 ) THEN
[1322]	391	average_cputime = log_point(1)%sum / REAL( (nx+1) * (ny+1) * nz, KIND=wp ) / &
	392	REAL( nr_timesteps_this_run, KIND=wp ) * 1E6_wp ! in micro-sec
[1318]	393	ELSE
[1353]	394	average_cputime = -1.0_wp
[1318]	395	ENDIF
	396
	397	!
	398	!-- Write cpu-times sorted by size
	399	CALL check_open( 18 )
	400	#if defined( __parallel )
	401	WRITE ( 18, 100 ) TRIM( run_description_header ), &
	402	numprocs * threads_per_task, pdims(1), pdims(2), &
	403	threads_per_task, nx+1, ny+1, nz, nr_timesteps_this_run, &
	404	average_cputime
	405
	406	WRITE ( 18, 110 )
	407	#else
	408	WRITE ( 18, 100 ) TRIM( run_description_header ), &
	409	numprocs * threads_per_task, 1, 1, &
	410	threads_per_task, nx+1, ny+1, nz, nr_timesteps_this_run, &
	411	average_cputime
	412
	413	WRITE ( 18, 110 )
	414	#endif
	415	DO
	416	ii = MAXLOC( sum )
	417	i = ii(1)
[1353]	418	IF ( sum(i) /= -1.0_wp ) THEN
[1318]	419	WRITE ( 18, 102 ) &
[1353]	420	log_point(i)%place, log_point(i)%sum, &
	421	log_point(i)%sum / log_point(1)%sum * 100.0_wp, &
[1318]	422	log_point(i)%counts, pe_min(i), pe_max(i), pe_rms(i)
[1353]	423	sum(i) = -1.0_wp
[1318]	424	ELSE
	425	EXIT
	426	ENDIF
	427	ENDDO
[1]	428	ENDIF
	429
	430
[1318]	431	!
	432	!-- The same procedure again for the individual measurements.
	433	!
	434	!-- Compute cpu-times in seconds
	435	log_point_s%mtime = log_point_s%mtime / norm
	436	log_point_s%sum = log_point_s%sum / norm
	437	log_point_s%vector = log_point_s%vector / norm
	438	WHERE ( log_point_s%counts /= 0 )
	439	log_point_s%mean = log_point_s%sum / log_point_s%counts
	440	END WHERE
	441
	442	!
	443	!-- Collect cpu-times from all PEs and calculate statistics
	444	#if defined( __parallel )
	445	!
	446	!-- Set barrier in order to avoid that PE0 receives log_point_s-data
	447	!-- while still busy with receiving log_point-data (see above)
	448	CALL MPI_BARRIER( comm2d, ierr )
	449	#endif
	450	IF ( myid == 0 ) THEN
	451	!
	452	!-- Initialize temporary arrays needed for statistics
	453	pe_min = log_point_s%sum
	454	pe_max = log_point_s%sum ! need to be set in case of 1 PE
[1353]	455	pe_rms = 0.0_wp
[1318]	456
	457	#if defined( __parallel )
	458	!
	459	!-- Receive data from all PEs
	460	DO i = 1, numprocs-1
	461	CALL MPI_RECV( pe_max(1), SIZE( log_point ), MPI_REAL, &
	462	MPI_ANY_SOURCE, MPI_ANY_TAG, comm2d, status, ierr )
	463	sender = status(MPI_SOURCE)
	464	pe_log_points(:,sender) = pe_max
	465	ENDDO
	466	pe_log_points(:,0) = log_point_s%sum ! Results from PE0
	467	!
	468	!-- Calculate mean of all PEs, store it on log_point_s%sum
	469	!-- and find minimum and maximum
	470	DO iii = 1, SIZE( log_point )
	471	DO i = 1, numprocs-1
	472	log_point_s(iii)%sum = log_point_s(iii)%sum + pe_log_points(iii,i)
	473	pe_min(iii) = MIN( pe_min(iii), pe_log_points(iii,i) )
	474	pe_max(iii) = MAX( pe_max(iii), pe_log_points(iii,i) )
	475	ENDDO
	476	log_point_s(iii)%sum = log_point_s(iii)%sum / numprocs
	477	!
	478	!-- Calculate rms
	479	DO i = 0, numprocs-1
[1353]	480	pe_rms(iii) = pe_rms(iii) + ( &
[1318]	481	pe_log_points(iii,i) - log_point_s(iii)%sum &
	482	)**2
	483	ENDDO
	484	pe_rms(iii) = SQRT( pe_rms(iii) / numprocs )
	485	ENDDO
	486	ELSE
	487	!
	488	!-- Send data to PE0 (pe_max is used as temporary storage to send
	489	!-- the data in order to avoid sending the data type log)
	490	pe_max = log_point_s%sum
	491	CALL MPI_SEND( pe_max(1), SIZE( log_point ), MPI_REAL, 0, 0, comm2d, &
	492	ierr )
	493	#endif
	494
	495	ENDIF
	496
	497	!
	498	!-- Write cpu-times
	499	IF ( myid == 0 ) THEN
	500	!
	501	!-- Re-store sums
	502	WHERE ( log_point_s%counts /= 0 )
	503	sum = log_point_s%sum
	504	ELSEWHERE
[1353]	505	sum = -1.0_wp
[1318]	506	ENDWHERE
	507
	508	!
	509	!-- Write cpu-times sorted by size
	510	WRITE ( 18, 101 )
	511	DO
	512	ii = MAXLOC( sum )
	513	i = ii(1)
[1353]	514	IF ( sum(i) /= -1.0_wp ) THEN
	515	WRITE ( 18, 102 ) &
	516	log_point_s(i)%place, log_point_s(i)%sum, &
	517	log_point_s(i)%sum / log_point(1)%sum * 100.0_wp, &
[1318]	518	log_point_s(i)%counts, pe_min(i), pe_max(i), pe_rms(i)
[1353]	519	sum(i) = -1.0_wp
[1318]	520	ELSE
	521	EXIT
	522	ENDIF
	523	ENDDO
	524
	525	!
	526	!-- Output of handling of MPI operations
	527	IF ( collective_wait ) THEN
	528	WRITE ( 18, 103 )
	529	ELSE
	530	WRITE ( 18, 104 )
	531	ENDIF
	532	IF ( cpu_log_barrierwait ) WRITE ( 18, 111 )
	533	IF ( synchronous_exchange ) THEN
	534	WRITE ( 18, 105 )
	535	ELSE
	536	WRITE ( 18, 106 )
	537	ENDIF
	538
	539	!
	540	!-- Empty lines in order to create a gap to the results of the model
	541	!-- continuation runs
	542	WRITE ( 18, 107 )
	543
	544	!
	545	!-- Unit 18 is not needed anymore
	546	CALL close_file( 18 )
	547
	548	ENDIF
	549
[1402]	550	CALL location_message( 'finished', .TRUE. )
[1318]	551
	552	100 FORMAT (A/11('-')//'CPU measures for ',I5,' PEs (',I5,'(x) * ',I5,'(y', &
	553	&') tasks *',I5,' threads):'// &
	554	'gridpoints (x/y/z): ',20X,I5,' * ',I5,' * ',I5/ &
	555	'nr of timesteps: ',22X,I6/ &
	556	'cpu time per grid point and timestep: ',5X,F8.5,' * 10**-6 s')
	557
	558	101 FORMAT (/'special measures:'/ &
	559	&'-----------------------------------------------------------', &
[1931]	560	&'------------------------')
[1318]	561
[1931]	562	102 FORMAT (A25,2X,F9.3,2X,F7.2,1X,I7,3(1X,F9.3))
[1318]	563	103 FORMAT (/'Barriers are set in front of collective operations')
	564	104 FORMAT (/'No barriers are set in front of collective operations')
	565	105 FORMAT (/'Exchange of ghostpoints via MPI_SENDRCV')
	566	106 FORMAT (/'Exchange of ghostpoints via MPI_ISEND/MPI_IRECV')
	567	107 FORMAT (//)
[1931]	568	110 FORMAT ('-------------------------------------------------------------', &
	569	&'---------'//&
	570	&'place: mean counts min ',&
[1318]	571	&' max rms'/ &
[1931]	572	&' sec. % sec. ', &
[1318]	573	&' sec. sec.'/ &
[1931]	574	&'-----------------------------------------------------------', &
	575	&'------------------------')
[1318]	576	111 FORMAT (/'Barriers are set at beginning (start/continue) of measurements')
	577
	578	END SUBROUTINE cpu_statistics
	579
	580	END MODULE cpulog

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