C C Parallel Sparse BLAS version 2.2 C (C) Copyright 2006/2007/2008 C Salvatore Filippone University of Rome Tor Vergata C Alfredo Buttari University of Rome Tor Vergata C C Redistribution and use in source and binary forms, with or without C modification, are permitted provided that the following conditions C are met: C 1. Redistributions of source code must retain the above copyright C notice, this list of conditions and the following disclaimer. C 2. Redistributions in binary form must reproduce the above copyright C notice, this list of conditions, and the following disclaimer in the C documentation and/or other materials provided with the distribution. C 3. The name of the PSBLAS group or the names of its contributors may C not be used to endorse or promote products derived from this C software without specific written permission. C C THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS C ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED C TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR C PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PSBLAS GROUP OR ITS CONTRIBUTORS C BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR C CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF C SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS C INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN C CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) C ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE C POSSIBILITY OF SUCH DAMAGE. C C C SUBROUTINE DSWMM(TRANS,M,N,K,ALPHA,FIDA,DESCRA,A,IA1,IA2, C INFOA,B,LDB,BETA,C,LDC,WORK,LWORK,IERROR) C Purpose C ======= C C Computing C <-- ALPHA A B + BETA C or C C <-- ALPHA At B + BETA C C Called by DCSMM C Actual computing performed by sparse Toolkit kernels. C This routine selects the proper kernel for each C data structure. C C Parameters C ========== C C TRANS - CHARACTER*1 C On entry TRANS specifies if the routine operates with matrix A C or with the transpose of A as follows: C TRANS = 'N' -> use matrix A C TRANS = 'T' or 'C' -> use A' (transpose of matrix A) C Unchanged on exit. C C M - INTEGER C On entry: number of rows of matrix A (A') and C number of rows of matrix C C Unchanged on exit. C C N - INTEGER C On entry: number of columns of matrix B C and number of columns of matrix C. C Unchanged on exit. C C K - INTEGER C On entry: number of columns of matrix A (A') and C number of rows of matrix B C Unchanged on exit. C C ALPHA - DOUBLE PRECISION C On entry: multiplicative constant. C Unchanged on exit. C C FIDA - CHARACTER*5 C On entry FIDA defines the format of the input sparse matrix. C Unchanged on exit. C C DESCRA - CHARACTER*1 array of DIMENSION (9) C On entry DESCRA describes the characteristics of the input C sparse matrix. C Unchanged on exit. C C A - DOUBLE PRECISION array of DIMENSION (*) C On entry A specifies the values of the input sparse C matrix. C Unchanged on exit. C C IA1 - INTEGER array of dimension (*) C On entry IA1 holds integer information on input sparse C matrix. Actual information will depend on data format used. C Unchanged on exit. C C IA2 - INTEGER array of dimension (*) C On entry IA2 holds integer information on input sparse C matrix. Actual information will depend on data format used. C Unchanged on exit. C C INFOA - INTEGER array of length 10. C On entry can hold auxiliary information on input matrices C formats or environment of subsequent calls. C Might be changed on exit. C C B - DOUBLE PRECISION matrix of dimension (LDB,*) C On entry: dense matrix. C Unchanged on exit. C C LDB - INTEGER C On entry: leading dimension of B C Unchanged on exit. C C BETA - DOUBLE PRECISION C On entry: multiplicative constant. C Unchanged on exit. C C C - DOUBLE PRECISION matrix of dimension (LDC,*) C On entry: dense matrix. C On exit is updated with the matrix-matrix product. C C LDC - INTEGER C On entry: leading dimension of C C Unchanged on exit. C C WORK - DOUBLE PRECISION array of dimension (LWORK) C On entry: work area. C On exit INT(WORK(1)) contains the minimum value C for LWORK satisfying DSWMM memory requirements. C C LWORK - INTEGER C On entry LWORK specifies the dimension of WORK C Unchanged on exit. C C IERROR - INTEGER C On exit IERROR contains the value of error flag as follows: C IERROR = 0 no error C IERROR > 0 warning C IERROR < 0 fatal error C C Note C ==== C All checks on argument are performed in the calling routine. C C SUBROUTINE DSWMM(TRANS,M,N,K,ALPHA,FIDA,DESCRA,A,IA1,IA2, & & INFOA,B,LDB,BETA,C,LDC,WORK,LWORK,IERROR) use psb_const_mod use psb_string_mod C .. Scalar Arguments .. INTEGER M,N,K,LDB,LDC,LWORK,IERROR CHARACTER TRANS real(psb_dpk_) ALPHA,BETA C .. Array Arguments .. INTEGER IA1(*),IA2(*),INFOA(*), INT_VAL(5) CHARACTER DESCRA*11, FIDA*5 real(psb_dpk_) A(*),B(LDB,*),C(LDC,*),WORK(*) C .. External Subroutines .. EXTERNAL DCSRMM CHARACTER*20 NAME C .. Executable Statements .. C NAME = 'DSWMM\0' IERROR = 0 CALL FCPSB_ERRACTIONSAVE(ERR_ACT) C Switching on FIDA: proper sparse BLAS routine is selected C according to data structure C IF (psb_toupper(FIDA(1:3)).EQ.'CSR') THEN C C A, IA1, IA2 ---> AR, JA, IA C VAL, INDX, PNTR C INFOA(*) not used CALL DCSRMM(TRANS,M,N,K,ALPHA,DESCRA,A,IA1, + IA2,B,LDB,BETA,C,LDC,WORK,LWORK,IERROR) ELSE IF (psb_toupper(FIDA(1:3)).EQ.'JAD') THEN C C INFOA(*) not used C CALL DJADMM(TRANS,M,N,K,ALPHA,DESCRA,A,IA1, + IA2,B,LDB,BETA,C,LDC,WORK,IERROR) ELSE IF (psb_toupper(FIDA(1:3)).EQ.'COO') THEN C C CALL DCOOMM(TRANS,M,N,K,ALPHA,DESCRA,A,IA1, + IA2,INFOA,B,LDB,BETA,C,LDC,WORK,LWORK,IERROR) ELSE C C This data structure not yet considered C IERROR = 3010 CALL FCPSB_ERRPUSH(IERROR,NAME,INT_VAL) GOTO 9999 END IF CALL FCPSB_ERRACTIONRESTORE(ERR_ACT) RETURN 9999 CONTINUE CALL FCPSB_ERRACTIONRESTORE(ERR_ACT) IF ( ERR_ACT .NE. 0 ) THEN CALL FCPSB_SERROR() RETURN ENDIF RETURN END