|
|
|
|
C
|
|
|
|
|
C Parallel Sparse BLAS v2.0
|
|
|
|
|
C (C) Copyright 2006 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
|
|
|
|
|
C Purpose
|
|
|
|
|
C =======
|
|
|
|
|
C
|
|
|
|
|
C Performing column permutation of a sparse matrix.
|
|
|
|
|
C
|
|
|
|
|
C Parameters
|
|
|
|
|
C ==========
|
|
|
|
|
C
|
|
|
|
|
C TRANS - CHARACTER*1
|
|
|
|
|
C On entry TRANS specifies whether the routine will use
|
|
|
|
|
C matrix P or the transpose of P for the permutation as follows:
|
|
|
|
|
C TRANS = 'N' -> permute with matrix P
|
|
|
|
|
C TRANS = 'T' or 'C' -> permute the transpose of P
|
|
|
|
|
C Unchanged on exit.
|
|
|
|
|
C
|
|
|
|
|
C M - INTEGER
|
|
|
|
|
C On entry: number of rows of matrix A.
|
|
|
|
|
C Unchanged on exit.
|
|
|
|
|
C
|
|
|
|
|
C N - INTEGER
|
|
|
|
|
C On entry: number of columns of matrix A.
|
|
|
|
|
C Unchanged on exit.
|
|
|
|
|
C
|
|
|
|
|
C DESCRA - CHARACTER*5 array of DIMENSION (10)
|
|
|
|
|
C On entry DESCRA defines the format of the input sparse 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 On exit contain integer information on permuted matrix.
|
|
|
|
|
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 On exit contain integer information on permuted matrix.
|
|
|
|
|
C
|
|
|
|
|
C INFOA - INTEGER array of dimension (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 P - INTEGER array of dimension (M)
|
|
|
|
|
C On entry P specifies the column permutation of matrix A
|
|
|
|
|
C (P(1) == 0 if no permutation).
|
|
|
|
|
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 DSPRP 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 WORK - DOUBLE PRECISION array of dimension (LWORK)
|
|
|
|
|
C Work area.
|
|
|
|
|
C
|
|
|
|
|
C LWORK - INTEGER
|
|
|
|
|
C On entry LWORK specifies the dimension of WORK.
|
|
|
|
|
C LWORK must be greater than zero.
|
|
|
|
|
C On exit LWORK is the maximum between the initial value and
|
|
|
|
|
C the minimum value satisfying DSPRP memory requirements.
|
|
|
|
|
C
|
|
|
|
|
C IERROR - INTEGER
|
|
|
|
|
C On exit IERROR contains the value of error flag as follows:
|
|
|
|
|
C IERROR = 0 no error
|
|
|
|
|
C IERROR = 4 error on dimension of vector WORK
|
|
|
|
|
C IERROR = 32 unknown flag TRANS
|
|
|
|
|
C IERROR = 64 LWORK <= 0
|
|
|
|
|
C IERROR = 128 this data structure not yet considered
|
|
|
|
|
C
|
|
|
|
|
C Notes
|
|
|
|
|
C =====
|
|
|
|
|
C It is not possible to call this subroutine with LWORK=0 to get
|
|
|
|
|
C the minimal value for LWORK. This functionality needs a better
|
|
|
|
|
C connection with DxxxMM
|
|
|
|
|
C
|
|
|
|
|
C
|
|
|
|
|
SUBROUTINE DCSRP1(TRANS,M,N,DESCRA,JA,IA,
|
|
|
|
|
+ P,WORK,IWORK,LWORK,IERROR)
|
|
|
|
|
use psb_const_mod
|
|
|
|
|
use psb_spmat_type
|
|
|
|
|
IMPLICIT NONE
|
|
|
|
|
C .. Scalar Arguments ..
|
|
|
|
|
INTEGER LWORK,M, N, IERROR
|
|
|
|
|
CHARACTER TRANS
|
|
|
|
|
C .. Array Arguments ..
|
|
|
|
|
DOUBLE PRECISION WORK(*)
|
|
|
|
|
INTEGER JA(*), IA(*), P(*), IWORK(*)
|
|
|
|
|
CHARACTER DESCRA*11
|
|
|
|
|
C .. Local Scalars ..
|
|
|
|
|
INTEGER I, J, ERR_ACT
|
|
|
|
|
c .. Local Arrays ..
|
|
|
|
|
CHARACTER*20 NAME
|
|
|
|
|
INTEGER INT_VAL(5)
|
|
|
|
|
C .. Intrinsic Functions ..
|
|
|
|
|
INTRINSIC DBLE
|
|
|
|
|
C
|
|
|
|
|
C .. Executable Statements ..
|
|
|
|
|
C
|
|
|
|
|
NAME = 'DCSRP1\0'
|
|
|
|
|
IERROR = 0
|
|
|
|
|
CALL FCPSB_ERRACTIONSAVE(ERR_ACT)
|
|
|
|
|
|
|
|
|
|
IF(TRANS.EQ.'N') THEN
|
|
|
|
|
DO 30 I=1,M
|
|
|
|
|
DO 10 J=IA(I),IA(I+1)-1
|
|
|
|
|
JA(J) = P(JA(J))
|
|
|
|
|
10 CONTINUE
|
|
|
|
|
30 CONTINUE
|
|
|
|
|
WORK(1) = 0.D0
|
|
|
|
|
ELSE IF(TRANS.EQ.'T') THEN
|
|
|
|
|
C
|
|
|
|
|
C LWORK refers here to INTEGER IWORK (alias for WORK)
|
|
|
|
|
C
|
|
|
|
|
IF(LWORK.LT.M) THEN
|
|
|
|
|
IERROR = 60
|
|
|
|
|
INT_VAL(1) = 10
|
|
|
|
|
INT_VAL(2) = M
|
|
|
|
|
INT_VAL(3) = LWORK
|
|
|
|
|
CALL FCPSB_ERRPUSH(IERROR,NAME,INT_VAL)
|
|
|
|
|
GOTO 9999
|
|
|
|
|
ENDIF
|
|
|
|
|
C
|
|
|
|
|
C Transpose permutation matrix
|
|
|
|
|
C
|
|
|
|
|
DO 20 I=1,N
|
|
|
|
|
IWORK(P(I)) = I
|
|
|
|
|
20 CONTINUE
|
|
|
|
|
C
|
|
|
|
|
C Permute columns
|
|
|
|
|
C
|
|
|
|
|
DO 50 I=1,M
|
|
|
|
|
DO 40 J=IA(I),IA(I+1)-1
|
|
|
|
|
JA(J) = IWORK(JA(J))
|
|
|
|
|
40 CONTINUE
|
|
|
|
|
50 CONTINUE
|
|
|
|
|
C
|
|
|
|
|
C WORK(1) refers here to a value for a DOUBLE PRECISION WORK
|
|
|
|
|
C
|
|
|
|
|
WORK(1) = DBLE((M+1)/PSB_DBLEINT_)
|
|
|
|
|
ENDIF
|
|
|
|
|
|
|
|
|
|
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
|
