c c $Id: hitc_slave.f,v 1.1 1996/09/23 20:55:32 pvmsrc Exp $ c program hitc_slave include '../include/fpvm3.h' c ------------------------------------------------------ c Slave performs work requested by the master c ------------------------------------------------------ parameter(iplmax=3,ipkkr=(iplmax+1)**2,ipbase=5) parameter(iprkkr=ipkkr*2,iprmtr=iprkkr*ipbase) c integer info, mytid, mtid, msgtype real*8 random complex*16 amt(iprmtr,iprmtr),bmt(iprmtr,iprmtr) c Enroll this program in PVM call pvmfmytid( mytid ) c Get the master's task id call pvmfparent( mtid ) c ------- Begin work loop -------- 1 continue c Receive data from host msgtype = 1 call pvmfrecv( mtid, msgtype, info ) call pvmfunpack( INTEGER4, n, 1, 1, info ) c Check if problem is over if( n .lt. 1 ) goto 9999 c Generate matrix of given size do 20 i=1,n do 10 j=1,n amt(i,j) = random() bmt(i,j) = cmplx(0.d0,0.d0) 10 continue 20 continue c Calculate Matrix Inverse call matinv( n, amt, bmt ) c Send result to host call pvmfinitsend( PVMDEFAULT, info ) call pvmfpack( INTEGER4, mytid, 1, 1, info ) msgtype = 2 call pvmfsend( mtid, msgtype, info ) c Go To top and await more work. goto 1 9999 continue print *,mytid,' received no-more-work flag: exiting...' call pvmfexit(info) stop end c ================================================================== c subroutine matinv( nrmatr, amt, bmt ) c c ================================================================== c implicit real*8 (a-h,o-z) c parameter(iplmax=3,ipkkr=(iplmax+1)**2,ipbase=5) parameter(iprkkr=ipkkr*2,iprmtr=iprkkr*ipbase) c complex*16 amt(iprmtr,iprmtr),bmt(iprmtr,iprmtr) complex*16 td(iprmtr),ad(iprmtr),bd(iprmtr) complex*16 amtinv,m1 c c ************************************************************** c calculates the matrix inverse needed to determine c elements of the tau-matrix. c c Level 2 BLAS version............................... c ************************************************************** m1=(-1.00d+00,0.0d+00) c c general case............ do 16 i=1,nrmatr amtinv=1.0d+00/amt(i,i) do 12 j=1,i bd(j)=bmt(i,j) td(j)=amtinv*amt(j,i) 12 continue ad(i)=amt(i,i) td(i)=(0.0d+00,0.0d+00) do 13 j=i+1,nrmatr ad(j)=amt(i,j) 13 td(j)=amtinv*amt(j,i) c c level 2 blas c call zgeru(nrmatr,i,m1,td,1,bd,1,bmt,iprmtr) call zgeru(nrmatr,nrmatr-i+1,m1,td,1,ad(i),1,amt(1,i),iprmtr) c 16 continue c return end ************************************************************************ * SUBROUTINE ZGERU ( M, N, ALPHA, X, INCX, Y, INCY, A, LDA ) * .. Scalar Arguments .. COMPLEX*16 ALPHA INTEGER INCX, INCY, LDA, M, N * .. Array Arguments .. COMPLEX*16 A( LDA, * ), X( * ), Y( * ) * .. * * Purpose * ======= * * ZGERU performs the rank 1 operation * * A := alpha*x*y' + A, * * where alpha is a scalar, x is an m element vector, y is an n element * vector and A is an m by n matrix. * * Parameters * ========== * * M - INTEGER. * On entry, M specifies the number of rows of the matrix A. * M must be at least zero. * Unchanged on exit. * * N - INTEGER. * On entry, N specifies the number of columns of the matrix A. * N must be at least zero. * Unchanged on exit. * * ALPHA - COMPLEX*16 . * On entry, ALPHA specifies the scalar alpha. * Unchanged on exit. * * X - COMPLEX*16 array of dimension at least * ( 1 + ( m - 1 )*abs( INCX ) ). * Before entry, the incremented array X must contain the m * element vector x. * Unchanged on exit. * * INCX - INTEGER. * On entry, INCX specifies the increment for the elements of * X. INCX must not be zero. * Unchanged on exit. * * Y - COMPLEX*16 array of dimension at least * ( 1 + ( n - 1 )*abs( INCY ) ). * Before entry, the incremented array Y must contain the n * element vector y. * Unchanged on exit. * * INCY - INTEGER. * On entry, INCY specifies the increment for the elements of * Y. INCY must not be zero. * Unchanged on exit. * * A - COMPLEX*16 array of DIMENSION ( LDA, n ). * Before entry, the leading m by n part of the array A must * contain the matrix of coefficients. On exit, A is * overwritten by the updated matrix. * * LDA - INTEGER. * On entry, LDA specifies the first dimension of A as declared * in the calling (sub) program. LDA must be at least * max( 1, m ). * Unchanged on exit. * * * Level 2 Blas routine. * * -- Written on 22-October-1986. * Jack Dongarra, Argonne National Lab. * Jeremy Du Croz, Nag Central Office. * Sven Hammarling, Nag Central Office. * Richard Hanson, Sandia National Labs. * * * .. Parameters .. COMPLEX*16 ZERO PARAMETER ( ZERO = ( 0.0D+0, 0.0D+0 ) ) * .. Local Scalars .. COMPLEX*16 TEMP INTEGER I, INFO, IX, J, JY, KX * .. External Subroutines .. EXTERNAL XERBLA * .. Intrinsic Functions .. INTRINSIC MAX * .. * .. Executable Statements .. * * Test the input parameters. * INFO = 0 IF ( M.LT.0 )THEN INFO = 1 ELSE IF( N.LT.0 )THEN INFO = 2 ELSE IF( INCX.EQ.0 )THEN INFO = 5 ELSE IF( INCY.EQ.0 )THEN INFO = 7 ELSE IF( LDA.LT.MAX( 1, M ) )THEN INFO = 9 END IF IF( INFO.NE.0 )THEN CALL XERBLA( 'ZGERU ', INFO ) RETURN END IF * * Quick return if possible. * IF( ( M.EQ.0 ).OR.( N.EQ.0 ).OR.( ALPHA.EQ.ZERO ) ) $ RETURN * * Start the operations. In this version the elements of A are * accessed sequentially with one pass through A. * IF( INCY.GT.0 )THEN JY = 1 ELSE JY = 1 - ( N - 1 )*INCY END IF IF( INCX.EQ.1 )THEN DO 20, J = 1, N IF( Y( JY ).NE.ZERO )THEN TEMP = ALPHA*Y( JY ) DO 10, I = 1, M A( I, J ) = A( I, J ) + X( I )*TEMP 10 CONTINUE END IF JY = JY + INCY 20 CONTINUE ELSE IF( INCX.GT.0 )THEN KX = 1 ELSE KX = 1 - ( M - 1 )*INCX END IF DO 40, J = 1, N IF( Y( JY ).NE.ZERO )THEN TEMP = ALPHA*Y( JY ) IX = KX DO 30, I = 1, M A( I, J ) = A( I, J ) + X( IX )*TEMP IX = IX + INCX 30 CONTINUE END IF JY = JY + INCY 40 CONTINUE END IF * RETURN * * End of ZGERU . * END SUBROUTINE XERBLA ( SRNAME, INFO ) * .. Scalar Arguments .. INTEGER INFO CHARACTER*6 SRNAME * .. * * Purpose * ======= * * XERBLA is an error handler for the Level 2 BLAS routines. * * It is called by the Level 2 BLAS routines if an input parameter is * invalid. * * Installers should consider modifying the STOP statement in order to * call system-specific exception-handling facilities. * * Parameters * ========== * * SRNAME - CHARACTER*6. * On entry, SRNAME specifies the name of the routine which * called XERBLA. * * INFO - INTEGER. * On entry, INFO specifies the position of the invalid * parameter in the parameter-list of the calling routine. * * * Auxiliary routine for Level 2 Blas. * * Written on 20-July-1986. * * .. Executable Statements .. * WRITE (*,99999) SRNAME, INFO * STOP * 99999 FORMAT ( ' ** On entry to ', A6, ' parameter number ', I2, $ ' had an illegal value' ) * * End of XERBLA. * END c----------------------------------------------------------------------------- double precision function random() c----------------------------------------------------- c Routine returns a pseudo-random number between 0-1. c----------------------------------------------------- integer m, i, md, seed double precision fmd data m/25173/,i/13849/,md/65536/,fmd/65536.d0/,seed/17/ save seed seed = mod(m*seed+i,md) random = seed/fmd return end