| 1 |
adcroft |
1.5 |
C $Header: /u/gcmpack/models/MITgcmUV/eesupp/src/eeboot_minimal.F,v 1.4 1998/10/28 03:11:34 cnh Exp $ |
| 2 |
cnh |
1.1 |
|
| 3 |
|
|
#include "CPP_EEOPTIONS.h" |
| 4 |
|
|
|
| 5 |
|
|
CStartOfInterface |
| 6 |
|
|
SUBROUTINE EEBOOT_MINIMAL |
| 7 |
|
|
C /==========================================================\ |
| 8 |
|
|
C | SUBROUTINE EEBOOT_MINIMAL | |
| 9 |
|
|
C | o Set an initial environment that is predictable i.e. | |
| 10 |
|
|
C | behaves in a similar way on all machines and stable. | |
| 11 |
|
|
C |==========================================================| |
| 12 |
|
|
C | Under MPI this routine calls MPI_INIT to setup the | |
| 13 |
|
|
C | mpi environment ( on some systems the code is running as | |
| 14 |
|
|
C | a single process prior to MPI_INIT, on others the mpirun | |
| 15 |
|
|
C | script has already created multiple processes). Until | |
| 16 |
|
|
C | MPI_Init is called it is unclear what state the | |
| 17 |
|
|
C | application is in. Once this routine has been run it is | |
| 18 |
|
|
C | "safe" to do things like I/O to report erros and to get | |
| 19 |
|
|
C | run parameters. | |
| 20 |
|
|
C | Note: This routine can also be compiled with CPP | |
| 21 |
|
|
C | directives set so that no multi-processing is initialise.| |
| 22 |
|
|
C | This is OK and should work fine. | |
| 23 |
|
|
C \==========================================================/ |
| 24 |
|
|
|
| 25 |
|
|
C === Global data === |
| 26 |
|
|
#include "SIZE.h" |
| 27 |
|
|
#include "EEPARAMS.h" |
| 28 |
|
|
#include "EESUPPORT.h" |
| 29 |
|
|
|
| 30 |
|
|
CEndOfInterface |
| 31 |
|
|
|
| 32 |
|
|
C === Local variables === |
| 33 |
|
|
INTEGER myThid |
| 34 |
|
|
#ifdef ALLOW_USE_MPI |
| 35 |
|
|
C mpiRC - Error code reporting variable used |
| 36 |
|
|
C with MPI. |
| 37 |
|
|
C fNam - Used to build name of file for standard |
| 38 |
|
|
C output and error output. |
| 39 |
|
|
C msgBuffer - Used to build messages for printing. |
| 40 |
|
|
CHARACTER*(MAX_LEN_MBUF) msgBuffer |
| 41 |
|
|
INTEGER mpiRC |
| 42 |
|
|
CHARACTER*13 fNam |
| 43 |
|
|
#endif /* ALLOW_USE_MPI */ |
| 44 |
|
|
|
| 45 |
|
|
C-- Default values set to single processor case |
| 46 |
|
|
numberOfProcs = 1 |
| 47 |
|
|
myProcId = 0 |
| 48 |
|
|
pidIO = myProcId |
| 49 |
|
|
myProcessStr = '??????' |
| 50 |
cnh |
1.4 |
C Set a dummy value for myThid because we are not multi-threading |
| 51 |
cnh |
1.1 |
C yet. |
| 52 |
|
|
myThid = 1 |
| 53 |
|
|
#ifdef ALLOW_USE_MPI |
| 54 |
|
|
C-- |
| 55 |
|
|
C-- MPI style multiple-process initialisation |
| 56 |
|
|
C-- ========================================= |
| 57 |
|
|
#ifndef ALWAYS_USE_MPI |
| 58 |
|
|
IF ( usingMPI ) THEN |
| 59 |
|
|
#endif |
| 60 |
|
|
C-- Initialise MPI multi-process parallel environment. |
| 61 |
|
|
C On some systems program forks at this point. Others have already |
| 62 |
|
|
C forked within mpirun - now thats an open standard! |
| 63 |
|
|
CALL MPI_INIT( mpiRC ) |
| 64 |
|
|
IF ( mpiRC .NE. MPI_SUCCESS ) THEN |
| 65 |
|
|
eeBootError = .TRUE. |
| 66 |
|
|
WRITE(msgBuffer,'(A,I)') |
| 67 |
|
|
& 'S/R INI_PROCS: MPI_INIT return code', |
| 68 |
|
|
& mpiRC |
| 69 |
|
|
CALL PRINT_ERROR( msgBuffer , myThid) |
| 70 |
|
|
GOTO 999 |
| 71 |
|
|
ENDIF |
| 72 |
adcroft |
1.5 |
C-- MPI has now been initialized but now we need to either |
| 73 |
|
|
C ask for a communicator or pretend that we have: |
| 74 |
|
|
C Ask coupler interface for a communicator |
| 75 |
|
|
c call MITCOMPONENT_init( 'MITgcmUV', MPI_COMM_MODEL ) |
| 76 |
|
|
C Pretend that we have asked for a communicator |
| 77 |
|
|
MPI_COMM_MODEL = MPI_COMM_WORLD |
| 78 |
|
|
|
| 79 |
cnh |
1.1 |
C-- Get my process number |
| 80 |
adcroft |
1.5 |
CALL MPI_COMM_RANK( MPI_COMM_MODEL, mpiMyId, mpiRC ) |
| 81 |
cnh |
1.1 |
IF ( mpiRC .NE. MPI_SUCCESS ) THEN |
| 82 |
|
|
eeBootError = .TRUE. |
| 83 |
|
|
WRITE(msgBuffer,'(A,I)') |
| 84 |
|
|
& 'S/R INI_PROCS: MPI_COMM_RANK return code', |
| 85 |
|
|
& mpiRC |
| 86 |
|
|
CALL PRINT_ERROR( msgBuffer , myThid) |
| 87 |
|
|
GOTO 999 |
| 88 |
|
|
ENDIF |
| 89 |
|
|
myProcId = mpiMyId |
| 90 |
|
|
WRITE(myProcessStr,'(I4.4)') myProcId |
| 91 |
|
|
mpiPidIo = myProcId |
| 92 |
|
|
pidIO = mpiPidIo |
| 93 |
|
|
IF ( mpiPidIo .EQ. myProcId ) THEN |
| 94 |
|
|
WRITE(fNam,'(A,A)') 'STDERR.', myProcessStr(1:4) |
| 95 |
|
|
OPEN(errorMessageUnit,FILE=fNam,STATUS='unknown') |
| 96 |
|
|
WRITE(fNam,'(A,A)') 'STDOUT.', myProcessStr(1:4) |
| 97 |
|
|
OPEN(standardMessageUnit,FILE=fNam,STATUS='unknown') |
| 98 |
|
|
ENDIF |
| 99 |
|
|
|
| 100 |
|
|
C-- Synchronise all processes |
| 101 |
|
|
C Strictly this is superfluous, but by using it we can guarantee to |
| 102 |
cnh |
1.4 |
C find out about processes that did not start up. |
| 103 |
adcroft |
1.5 |
CALL MPI_BARRIER( MPI_COMM_MODEL, mpiRC ) |
| 104 |
cnh |
1.1 |
IF ( mpiRC .NE. MPI_SUCCESS ) THEN |
| 105 |
|
|
eeBootError = .TRUE. |
| 106 |
|
|
WRITE(msgBuffer,'(A,I)') |
| 107 |
|
|
& 'S/R INI_PROCS: MPI_BARRIER return code', |
| 108 |
|
|
& mpiRC |
| 109 |
|
|
CALL PRINT_ERROR( msgBuffer , myThid) |
| 110 |
|
|
GOTO 999 |
| 111 |
|
|
ENDIF |
| 112 |
|
|
|
| 113 |
|
|
C-- Get number of MPI processes |
| 114 |
adcroft |
1.5 |
CALL MPI_COMM_SIZE ( MPI_COMM_MODEL, mpiNProcs, mpiRC ) |
| 115 |
cnh |
1.1 |
IF ( mpiRC .NE. MPI_SUCCESS ) THEN |
| 116 |
|
|
eeBootError = .TRUE. |
| 117 |
|
|
WRITE(msgBuffer,'(A,I)') |
| 118 |
|
|
& 'S/R INI_PROCS: MPI_COMM_SIZE return code', |
| 119 |
|
|
& mpiRC |
| 120 |
|
|
CALL PRINT_ERROR( msgBuffer , myThid) |
| 121 |
|
|
GOTO 999 |
| 122 |
|
|
ENDIF |
| 123 |
|
|
numberOfProcs = mpiNProcs |
| 124 |
|
|
|
| 125 |
cnh |
1.4 |
C-- Can not have more processes than compile time MAX_NO_PROCS |
| 126 |
cnh |
1.1 |
IF ( numberOfProcs .GT. MAX_NO_PROCS ) THEN |
| 127 |
|
|
eeBootError = .TRUE. |
| 128 |
|
|
WRITE(msgBuffer,'(A)') |
| 129 |
|
|
& 'S/R INI_PROCS: No. of processes too large' |
| 130 |
|
|
CALL PRINT_ERROR( msgBuffer , myThid) |
| 131 |
|
|
GOTO 999 |
| 132 |
|
|
ENDIF |
| 133 |
|
|
C-- Under MPI only allow same number of processes as proc. |
| 134 |
|
|
C-- grid size. |
| 135 |
|
|
C Strictly we are allowed more procs. but knowing there |
| 136 |
|
|
C is an exact match makes things easier. |
| 137 |
|
|
IF ( numberOfProcs .NE. nPx*nPy ) THEN |
| 138 |
|
|
eeBootError = .TRUE. |
| 139 |
|
|
WRITE(msgBuffer,'(A)') |
| 140 |
|
|
& 'S/R INI_PROCS: No. of processes not equal to nPx*nPy' |
| 141 |
|
|
CALL PRINT_ERROR( msgBuffer , myThid) |
| 142 |
|
|
GOTO 999 |
| 143 |
|
|
ENDIF |
| 144 |
|
|
|
| 145 |
|
|
#ifndef ALWAYS_USE_MPI |
| 146 |
|
|
ENDIF |
| 147 |
|
|
#endif |
| 148 |
|
|
#endif /* ALLOW_USE_MPI */ |
| 149 |
|
|
|
| 150 |
|
|
999 CONTINUE |
| 151 |
|
|
|
| 152 |
|
|
RETURN |
| 153 |
|
|
END |
| 154 |
|
|
|
Parent Directory
| 
Revision Log
| 
Revision Graph