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315 lines
8.9 KiB
Fortran
315 lines
8.9 KiB
Fortran
C
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C Parallel Sparse BLAS v2.0
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C (C) Copyright 2006 Salvatore Filippone University of Rome Tor Vergata
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C Alfredo Buttari University of Rome Tor Vergata
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C
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C Redistribution and use in source and binary forms, with or without
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C modification, are permitted provided that the following conditions
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C are met:
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C 1. Redistributions of source code must retain the above copyright
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C notice, this list of conditions and the following disclaimer.
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C 2. Redistributions in binary form must reproduce the above copyright
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C notice, this list of conditions, and the following disclaimer in the
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C documentation and/or other materials provided with the distribution.
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C 3. The name of the PSBLAS group or the names of its contributors may
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C not be used to endorse or promote products derived from this
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C software without specific written permission.
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C
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C THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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C ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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C TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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C PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PSBLAS GROUP OR ITS CONTRIBUTORS
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C BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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C CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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C SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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C INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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C CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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C ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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C POSSIBILITY OF SUCH DAMAGE.
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C
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C
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SUBROUTINE DCRJD(TRANS,M,N,UNITD,D,DESCRA,AR,IA1,IA2,INFO,
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* IP1,DESCRN,ARN,IAN1,IAN2,INFON,IP2,LARN,LIAN1,
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* LIAN2,AUX,LAUX,SIZE_REQ,IERROR)
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C
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C Purpose
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C =======
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C
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C DCRJD converts a CSR matrix into a Jagged Diagonal.
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C
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C
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C Notes
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C =====
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C
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C Parameters
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C ==========
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C
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C TRANS Whether the transpose should be converted.
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C
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C M,N Size of input matrix A
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C
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C UNITD Scaling by diagonal D: 'U'nit, 'L'eft, 'R'ight
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C D(*)
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C
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C DESCRA Input matrix A.
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C AR,IA1,
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C IA2,INFO
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C
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C DESCRN Output matrix in JAD format
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C ARN,IAN1
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C IAN2,INFON, IP1, IP2
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C
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use psb_const_mod
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use psb_spmat_type
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IMPLICIT NONE
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C
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C .. Scalar Arguments ..
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INTEGER LARN, LAUX, LAUX2, LIAN1, LIAN2, M, N,
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* SIZE_REQ, IERROR
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CHARACTER TRANS,UNITD
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C .. Array Arguments ..
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DOUBLE PRECISION AR(*), ARN(*), D(*), AUX(LAUX)
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INTEGER IA1(*), IA2(*), INFO(*), IAN1(*), IAN2(*),
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* INFON(*), IP1(*), IP2(*)
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CHARACTER DESCRA*11, DESCRN*11
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C .. Local Scalars ..
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INTEGER IOFF, ISTROW, NJA, NZ, PIA,
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+ PJA, PNG, K, MAX_NG, NG, LJA, ERR_ACT
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LOGICAL SCALE
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logical debug
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parameter (debug=.false.)
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CHARACTER UPLO
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INTEGER MAX_NNZERO
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c .. Local Arrays ..
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CHARACTER*20 NAME
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INTEGER INT_VAL(5), IERRV(5)
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C .. External Subroutines ..
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EXTERNAL DVTFG
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EXTERNAL MAX_NNZERO
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C .. Executable Statements ..
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C
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NAME = 'DCRJD\0'
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IERROR = 0
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CALL FCPSB_ERRACTIONSAVE(ERR_ACT)
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IF (LAUX.LT.4) THEN
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IERROR = 60
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INT_VAL(1) = 22
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INT_VAL(2) = 4
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INT_VAL(3) = LAUX
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CALL FCPSB_ERRPUSH(IERROR,NAME,INT_VAL)
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GOTO 9999
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ENDIF
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IF (TRANS.EQ.'N') THEN
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C
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NJA = 3*M
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SCALE = (UNITD.EQ.'L') ! meaningless
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IOFF = 5
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C
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C SET THE VALUES OF POINTERS TO VECTOR IAN2 AND AUX
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C
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PNG = IOFF
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PIA = PNG + 1
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PJA = PIA + 3*(M+2)
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IF (DESCRA(1:1).EQ.'G') THEN
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C
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C CHECK ON DIMENSION OF IAN2 AND AUX
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C
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MAX_NG = M/PSB_MINJDROWS_+1
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IF ((PIA+3*(MAX_NG+1).GT.LIAN2).OR.(M+1 .GT. LAUX)) THEN
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C ... If I haven't sufficent memory to compute NG in IAN2 ...
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IF (M+1+3*(MAX_NG+1)/PSB_DBLEINT_+1.GT.LAUX) THEN
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C ... If I haven't sufficent memory to compute NG in AUX ...
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IERROR = 60
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INT_VAL(1) = 22
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INT_VAL(2) = M+1+3*(MAX_NG+1)/PSB_DBLEINT_+1
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INT_VAL(3) = LAUX
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CALL FCPSB_ERRPUSH(IERROR,NAME,INT_VAL)
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GOTO 9999
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ELSE
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C ... I have sufficent memory to compute NG in AUX ...
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CALL DGBLOCK(M,IA2,IP1,AUX(M+2),NG, AUX, LAUX*2)
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CALL CHECK_DIM(M,N,AUX(M+2),NG,IA2,
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+ NZ,LARN,LIAN1,LIAN2,IERRV)
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IF (IERRV(1).NE.0) THEN
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SIZE_REQ = MAX(IERRV(2),IERRV(3),IERRV(4))
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GOTO 9998
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ENDIF
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ENDIF
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END IF
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NZ = IA2(M+1) - 1
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C
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C ... Initialize Permutation Matrix ...
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C
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DO 10 K = 1, M
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IP1(K) = K
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10 CONTINUE
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IP2(1) = 0
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CALL DGBLOCK(M,IA2,IP1,IAN2(PIA),IAN2(PNG), AUX, LAUX*2)
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PJA = PIA + 3*(IAN2(PNG)+1)
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C
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C CHECK FOR ARRAY DIMENSIONS
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C
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CALL CHECK_DIM(M,N,IAN2(PIA),IAN2(PNG),IA2,
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+ NZ,LARN,LIAN1,LIAN2,IERRV)
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IF (IERRV(1) .NE.0) THEN
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SIZE_REQ = MAX(IERRV(2),IERRV(3),IERRV(4))
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GOTO 9998
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ENDIF
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LJA = LIAN2-PJA
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CALL DGINDEX(M,IAN2(PNG),AR,IA1,IA2,ARN,IAN1,IAN2(PIA),
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+ IAN2(PJA), INFON, LARN,LIAN1,
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+ LJA,IP1, AUX, LAUX*2, SIZE_REQ,IERROR)
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IF (IERROR.NE.0) THEN
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CALL FCPSB_ERRPUSH(IERROR,NAME,INT_VAL)
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GOTO 9999
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ENDIF
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DESCRN(1:1) = 'G'
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DESCRN(2:2) = 'U'
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DESCRN(3:3) = 'N'
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ELSE IF (DESCRA(1:1).EQ.'S' .AND. DESCRA(2:2).EQ.'U') THEN
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C
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ISTROW = 1
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NZ = 2*(IA2(M+1)-1) - M
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C
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C CHECK ON DIMENSION OF IAN1 AND ARN
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C
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IF (NZ .GT. LIAN1) THEN
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IERROR = 60
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INT_VAL(1) = 19
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INT_VAL(2) = NZ
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INT_VAL(3) = LAUX
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LIAN1 = NZ
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CALL FCPSB_ERRPUSH(IERROR,NAME,INT_VAL)
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GOTO 9999
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END IF
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IF (NZ .GT. LARN) THEN
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IERROR = 60
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INT_VAL(1) = 18
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INT_VAL(2) = NZ
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INT_VAL(3) = LAUX
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LIAN1 = NZ
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CALL FCPSB_ERRPUSH(IERROR,NAME,INT_VAL)
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GOTO 9999
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END IF
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DO 20 K = 1, M
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IP2(K) = K
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20 CONTINUE
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c$$$ CALL DVSSG(M,IA1,IA2,IP2,IAN2(PNG),IP1,IP2,AUX(IWLEN),
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c$$$ * AUX(IWORK1))
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c$$$ CALL DVSMR(M,AR,IA1,IA2,IAN2(PNG),AUX(IWLEN),IP1,IP2,
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c$$$ * IAN2(PIA),IAN2(PJA),IAN1,ARN,AUX(IWORK1),
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c$$$ * AUX(IWORK2),NJA,IER,SCALE)
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C
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ELSE IF (DESCRA(1:1).EQ.'T') THEN
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C
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C Only unit diagonal so far for triangular matrices.
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C
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IF (DESCRA(3:3).NE.'U') THEN
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IERROR=3022
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CALL FCPSB_ERRPUSH(IERROR,NAME,INT_VAL)
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GOTO 9999
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ENDIF
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UPLO = DESCRA(2:2)
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NZ = IA2(M+1) - 1
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C
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C ...Compute levels...
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C Each level correspond to a block
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C IAN1 is used as a work area
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CALL DVTFG(UPLO,M,IA1,IA2,IAN2(PNG),IP2,IP1,IAN1,
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+ AUX,AUX(M+1),AUX(2*(M+1)))
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C Generate IA(1,*)
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DO K = 1, IAN2(PNG)+1
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IAN2(PIA+3*(K-1)) = IAN1(K)
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ENDDO
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CALL GEN_BLOCK(M,IAN2(PNG),IAN2(PIA),AUX)
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PJA = PIA + 3*(IAN2(PNG)+1)
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C
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C CHECK FOR ARRAY DIMENSIONS
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C
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CALL CHECK_DIM(M,N,IAN2(PIA),IAN2(PNG),IA2,
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+ NZ,LARN,LIAN1,LIAN2,IERRV)
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IF (IERRV(1).NE.0) THEN
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size_req = max(ierrv(2),ierrv(3),ierrv(4))
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c$$$ write(0,*) "error 2",ierrv(1)
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GOTO 9998
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endif
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LJA = LIAN2-PJA
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CALL DGIND_TRI(M,IAN2(PNG),AR,IA1,IA2,ARN,IAN1,IAN2(PIA),
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+ IAN2(PJA),LARN,LIAN1,LJA,IP1,AUX, LAUX*2, IERROR)
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IF (IERROR.NE.0) THEN
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IERROR=4011
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CALL FCPSB_ERRPUSH(IERROR,NAME,INT_VAL)
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GOTO 9999
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ENDIF
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DESCRN(1:1) = 'T'
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DESCRN(2:2) = DESCRA(2:2)
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DESCRN(3:3) = DESCRA(3:3)
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END IF
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C
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C SET THE OUTPUT PARAMETER
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C
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IAN2(1) = PNG
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IAN2(2) = PIA
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IAN2(3) = PJA
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LARN = NZ
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LIAN1 = NZ
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LIAN2 = 3*M + 10
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LAUX2 = 4*M + 2
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C
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ELSE IF (TRANS.NE.'N') THEN
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C
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C TO BE DONE
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C
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IERROR = 3021
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CALL FCPSB_ERRPUSH(IERROR,NAME,INT_VAL)
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GOTO 9999
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END IF
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9998 CONTINUE
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CALL FCPSB_ERRACTIONRESTORE(ERR_ACT)
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RETURN
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9999 CONTINUE
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CALL FCPSB_ERRACTIONRESTORE(ERR_ACT)
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IF ( ERR_ACT .NE. 0 ) THEN
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CALL FCPSB_SERROR()
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RETURN
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ENDIF
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RETURN
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END
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