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SUBROUTINE BTSETUP( MEM, MEMLEN, CMEM, CMEMLEN, OUTNUM,
$ TESTSDRV, TESTBSBR, TESTCOMB, TESTAUX,
$ IAM, NNODES )
*
* -- BLACS tester (version 1.0) --
* University of Tennessee
* December 15, 1994
*
* .. Scalar Arguments ..
LOGICAL TESTSDRV, TESTBSBR, TESTCOMB, TESTAUX
INTEGER MEMLEN, CMEMLEN, OUTNUM, IAM, NNODES
* ..
* .. Array Arguments ..
INTEGER MEM(MEMLEN)
CHARACTER*1 CMEM(CMEMLEN)
* ..
*
* Purpose
* =======
* BTSETUP: Does nothing on non-PVM platforms
*
* ====================================================================
* .. Executable Statements ..
RETURN
END
*
INTEGER FUNCTION IBTMYPROC()
*
* -- BLACS tester (version 1.0) --
* University of Tennessee
* December 15, 1994
*
* Purpose
* =======
* IBTMYPROC: returns a process number between 0 .. NPROCS-1. On
* systems not natively in this numbering scheme, translates to it.
*
* ====================================================================
* .. External Functions ..
INTEGER CMMD_SELF_ADDRESS
EXTERNAL CMMD_SELF_ADDRESS
* ..
* .. Executable Statements ..
*
IBTMYPROC = CMMD_SELF_ADDRESS()
RETURN
*
* End of IBTMYPROC
*
END
*
INTEGER FUNCTION IBTNPROCS()
*
* -- BLACS tester (version 1.0) --
* University of Tennessee
* December 15, 1994
*
* Purpose
* =======
* IBTNPROCS: returns the number of processes in the machine.
*
* ====================================================================
* .. External Functions ..
INTEGER CMMD_PARTITION_SIZE
EXTERNAL CMMD_PARTITION_SIZE
* ..
* .. Executable Statements ..
*
IBTNPROCS = CMMD_PARTITION_SIZE()
*
RETURN
*
* End of IBTNPROCS
*
END
*
SUBROUTINE BTSEND(DTYPE, N, BUFF, DEST, MSGID)
*
* -- BLACS tester (version 1.0) --
* University of Tennessee
* December 15, 1994
*
* .. Scalar Arguments ..
INTEGER N, DTYPE, DEST, MSGID
* ..
* .. Array Arguments ..
REAL BUFF(*)
* ..
*
* PURPOSE
* =======
* BTSEND: Communication primitive used to send messages independent
* of the BLACS. May safely be either locally or globally blocking.
*
* Arguments
* =========
* DTYPE (input) INTEGER
* Indicates what data type BUFF is (same as PVM):
* 1 = RAW BYTES
* 3 = INTEGER
* 4 = SINGLE PRECISION REAL
* 6 = DOUBLE PRECISION REAL
* 5 = SINGLE PRECISION COMPLEX
* 7 = DOUBLE PRECISION COMPLEX
*
* N (input) INTEGER
* The number of elements of type DTYPE in BUFF.
*
* BUFF (input) accepted as INTEGER array
* The array to be communicated. Its true data type is
* indicated by DTYPE.
*
* DEST (input) INTEGER
* The destination of the message.
*
* MSGID (input) INTEGER
* The message ID (AKA message tag or type).
*
* =====================================================================
* .. External Functions ..
INTEGER IBTMYPROC, IBTNPROCS, IBTSIZEOF
EXTERNAL IBTMYPROC, IBTNPROCS, IBTSIZEOF
* ..
* .. Local Scalars ..
INTEGER I, IAM, LENGTH
INTEGER LENGTH
INTEGER ISIZE, SSIZE, DSIZE, CSIZE, ZSIZE
* ..
* .. Save statement ..
SAVE ISIZE, SSIZE, DSIZE, CSIZE, ZSIZE
* ..
* .. Data statements ..
DATA ISIZE /-50/
* ..
* .. Executable Statements ..
*
* On first call, initialize size variables
*
IF( ISIZE .LT. 0 ) THEN
ISIZE = IBTSIZEOF('I')
SSIZE = IBTSIZEOF('S')
DSIZE = IBTSIZEOF('D')
CSIZE = IBTSIZEOF('C')
ZSIZE = IBTSIZEOF('Z')
END IF
*
* Figure length of buffer
*
IF( DTYPE .EQ. 1 ) THEN
LENGTH = N
ELSE IF( DTYPE .EQ. 3 ) THEN
LENGTH = N * ISIZE
ELSE IF( DTYPE .EQ. 4 ) THEN
LENGTH = N * SSIZE
ELSE IF( DTYPE .EQ. 5 ) THEN
LENGTH = N * CSIZE
ELSE IF( DTYPE .EQ. 6 ) THEN
LENGTH = N * DSIZE
ELSE IF( DTYPE .EQ. 7 ) THEN
LENGTH = N * ZSIZE
END IF
*
* Send the message
*
IF(DEST .EQ. -1) THEN
IAM = IBTMYPROC()
DO 10 I = 0, IBTNPROCS()-1
IF( I .NE. IAM )
$ CALL CMMD_SEND_BLOCK(I, MSGID, BUFF, LENGTH)
10 CONTINUE
ELSE
CALL CMMD_SEND_BLOCK(DEST, MSGID, BUFF, LENGTH)
END IF
*
RETURN
*
* End BTSEND
*
END
*
SUBROUTINE BTRECV(DTYPE, N, BUFF, SRC, MSGID)
*
* -- BLACS tester (version 1.0) --
* University of Tennessee
* December 15, 1994
*
*
* .. Scalar Arguments ..
INTEGER N, DTYPE, SRC, MSGID
* ..
* .. Array Arguments ..
REAL BUFF(*)
* ..
*
* PURPOSE
* =======
* BTRECV: Globally blocking receive.
*
* Arguments
* =========
* DTYPE (input) INTEGER
* Indicates what data type BUFF is:
* 1 = RAW BYTES
* 3 = INTEGER
* 4 = SINGLE PRECISION REAL
* 6 = DOUBLE PRECISION REAL
* 5 = SINGLE PRECISION COMPLEX
* 7 = DOUBLE PRECISION COMPLEX
*
* N (input) INTEGER
* The number of elements of type DTYPE in BUFF.
*
* BUFF (output) INTEGER
* The buffer to receive into.
*
* SRC (input) INTEGER
* The source of the message.
*
* MSGID (input) INTEGER
* The message ID.
*
* =====================================================================
*
* .. External Functions ..
INTEGER IBTSIZEOF
EXTERNAL IBTSIZEOF
* ..
* .. Local Scalars ..
INTEGER LENGTH
INTEGER ISIZE, SSIZE, DSIZE, CSIZE, ZSIZE
* ..
* .. Save statement ..
SAVE ISIZE, SSIZE, DSIZE, CSIZE, ZSIZE
* ..
* .. Data statements ..
DATA ISIZE /-50/
* ..
* .. Executable Statements ..
*
* On first call, initialize size variables
*
IF( ISIZE .LT. 0 ) THEN
ISIZE = IBTSIZEOF('I')
SSIZE = IBTSIZEOF('S')
DSIZE = IBTSIZEOF('D')
CSIZE = IBTSIZEOF('C')
ZSIZE = IBTSIZEOF('Z')
END IF
*
* Figure length of buffer
*
IF( DTYPE .EQ. 1 ) THEN
LENGTH = N
ELSE IF( DTYPE .EQ. 3 ) THEN
LENGTH = N * ISIZE
ELSE IF( DTYPE .EQ. 4 ) THEN
LENGTH = N * SSIZE
ELSE IF( DTYPE .EQ. 5 ) THEN
LENGTH = N * CSIZE
ELSE IF( DTYPE .EQ. 6 ) THEN
LENGTH = N * DSIZE
ELSE IF( DTYPE .EQ. 7 ) THEN
LENGTH = N * ZSIZE
END IF
*
* Receive the message
*
CALL CMMD_RECEIVE_BLOCK(SRC, MSGID, BUFF, LENGTH)
*
RETURN
*
* End of BTRECV
*
END
*
INTEGER FUNCTION IBTSIZEOF(TYPE)
*
* -- BLACS tester (version 1.0) --
* University of Tennessee
* December 15, 1994
*
* .. Scalar Arguments ..
CHARACTER*1 TYPE
* ..
*
* Purpose
* =======
* IBTSIZEOF: Returns the size, in bytes, of the 5 data types.
* If your platform has a different size for DOUBLE PRECISION, you must
* change the parameter statement in BLACSTEST as well.
*
* Arguments
* =========
* TYPE (input) CHARACTER*1
* The data type who's size is to be determined:
* 'I' : INTEGER
* 'S' : SINGLE PRECISION REAL
* 'D' : DOUBLE PRECISION REAL
* 'C' : SINGLE PRECISION COMPLEX
* 'Z' : DOUBLE PRECISION COMPLEX
*
* =====================================================================
*
* .. External Functions ..
LOGICAL LSAME
EXTERNAL LSAME
* ..
* .. Local Scalars ..
INTEGER LENGTH
* ..
* .. Executable Statements ..
*
IF( LSAME(TYPE, 'I') ) THEN
LENGTH = 4
ELSE IF( LSAME(TYPE, 'S') ) THEN
LENGTH = 4
ELSE IF( LSAME(TYPE, 'D') ) THEN
LENGTH = 8
ELSE IF( LSAME(TYPE, 'C') ) THEN
LENGTH = 8
ELSE IF( LSAME(TYPE, 'Z') ) THEN
LENGTH = 16
END IF
IBTSIZEOF = LENGTH
*
RETURN
END
|
