| 1 |
C $Header: /u/gcmpack/models/MITgcmUV/eesupp/src/ini_jam.F,v 1.2 2000/03/24 18:51:56 adcroft Exp $ |
| 2 |
|
| 3 |
#include "CPP_EEOPTIONS.h" |
| 4 |
|
| 5 |
#define USE_JAM_INIT |
| 6 |
|
| 7 |
SUBROUTINE INI_JAM |
| 8 |
|
| 9 |
C Initialise JAM based communication |
| 10 |
IMPLICIT NONE |
| 11 |
|
| 12 |
#ifdef LETS_MAKE_JAM |
| 13 |
|
| 14 |
C == Global data == |
| 15 |
#include "SIZE.h" |
| 16 |
#include "EEPARAMS.h" |
| 17 |
#include "EESUPPORT.h" |
| 18 |
|
| 19 |
#include "JAM_INFO.h" |
| 20 |
#include "MPI_INFO.h" |
| 21 |
|
| 22 |
#ifdef ALLOW_MPI |
| 23 |
#include "mpif.h" |
| 24 |
#endif |
| 25 |
|
| 26 |
C == Local variables == |
| 27 |
Real*8 dummyVal |
| 28 |
INTEGER rc |
| 29 |
CHARACTER*(MAX_LEN_FNAM) fnam |
| 30 |
#ifdef JAM_WITH_TWO_PROCS_PER_NODE |
| 31 |
INTEGER myTwoProcRank |
| 32 |
#endif |
| 33 |
|
| 34 |
C Names used in JAM exch testing for MPI based exchange |
| 35 |
mpi_northId = mpiPidN |
| 36 |
mpi_southId = mpiPidS |
| 37 |
|
| 38 |
#ifdef USE_JAM_INIT |
| 39 |
C JAM initialisation. This should work with or without |
| 40 |
C MPI. If we dont use MPI we have to start procs. by hand |
| 41 |
C though! |
| 42 |
#ifndef JAM_WITH_TWO_PROCS_PER_NODE |
| 43 |
CALL JAM_collective_init |
| 44 |
#else /* ! JAM_WITH_TWO_PROCS_PER_NODE */ |
| 45 |
myTwoProcRank = MOD(myProcId,2) |
| 46 |
IF ( myTwoProcRank .EQ. 0 ) THEN |
| 47 |
myTwoProcRank = 1 |
| 48 |
ELSE |
| 49 |
myTwoProcRank = 0 |
| 50 |
ENDIF |
| 51 |
CALL JAM_collective_init( myTwoProcRank ) |
| 52 |
#endif /* JAM_WITH_TWO_PROCS_PER_NODE */ |
| 53 |
|
| 54 |
CALL GET_JAM_self_address( jam_pid ) |
| 55 |
CALL GET_JAM_partition_size( jam_np ) |
| 56 |
jam_exchKey = 100 |
| 57 |
dummyVal = 0. |
| 58 |
CALL JAM_barrier_start( dummyVal ) |
| 59 |
CALL JAM_barrier_done( dummyVal ) |
| 60 |
|
| 61 |
C Set up connectivity |
| 62 |
jam_northId = jam_pid+1 |
| 63 |
IF ( jam_northId .EQ. jam_np ) jam_northId = 0 |
| 64 |
jam_southId = jam_pid-1 |
| 65 |
IF ( jam_southId .LT. 0 ) jam_southId = jam_np-1 |
| 66 |
|
| 67 |
numberOfProcs = jam_np |
| 68 |
myProcId = jam_pid |
| 69 |
|
| 70 |
#ifdef JAM_WITH_TWO_PROCS_PER_NODE |
| 71 |
C The following fixes the instance where MPI and |
| 72 |
C James JAM arrive at a different id for this process |
| 73 |
C *note* this assumes nPx=1 (no parallization in X) |
| 74 |
myPid = jam_pid |
| 75 |
pidN = mod(jam_pid+1,jam_np) |
| 76 |
pidS = mod(jam_pid-1+jam_np,jam_np) |
| 77 |
pidW = jam_pid |
| 78 |
pidE = jam_pid |
| 79 |
myYGlobalLo = sNy*nSy*jam_pid+1 |
| 80 |
myXGlobalLo = 1 |
| 81 |
#endif |
| 82 |
|
| 83 |
#endif |
| 84 |
#endif /* LETS_MAKE_JAM */ |
| 85 |
|
| 86 |
RETURN |
| 87 |
END |
Parent Directory
| 
Revision Log
| 
Revision Graph