!!$ !!$ Parallel Sparse BLAS v2.0 !!$ (C) Copyright 2006 Salvatore Filippone University of Rome Tor Vergata !!$ Alfredo Buttari University of Rome Tor Vergata !!$ !!$ Redistribution and use in source and binary forms, with or without !!$ modification, are permitted provided that the following conditions !!$ are met: !!$ 1. Redistributions of source code must retain the above copyright !!$ notice, this list of conditions and the following disclaimer. !!$ 2. Redistributions in binary form must reproduce the above copyright !!$ notice, this list of conditions, and the following disclaimer in the !!$ documentation and/or other materials provided with the distribution. !!$ 3. The name of the PSBLAS group or the names of its contributors may !!$ not be used to endorse or promote products derived from this !!$ software without specific written permission. !!$ !!$ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS !!$ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED !!$ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR !!$ PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PSBLAS GROUP OR ITS CONTRIBUTORS !!$ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR !!$ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF !!$ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS !!$ INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN !!$ CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) !!$ ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE !!$ POSSIBILITY OF SUCH DAMAGE. !!$ !!$ ! ! READ_MAT subroutine reads a matrix and its right hand sides, ! all stored in Matrix Market format file. The B field is optional,. ! ! Character :: filename*20 ! On Entry: name of file to be processed. ! On Exit : unchanged. ! ! Type(D_SPMAT) :: A ! On Entry: fresh variable. ! On Exit : will contain the global sparse matrix as follows: ! A%AS for coefficient values ! A%IA1 for column indices ! A%IA2 for row pointers ! A%M for number of global matrix rows ! A%K for number of global matrix columns ! ! Integer :: ICTXT ! On Entry: BLACS context. ! On Exit : unchanged. ! ! Real(Kind(1.D0)), Pointer, Optional :: B(:,:) ! On Entry: fresh variable. ! On Exit: will contain right hand side(s). ! ! Integer, Optional :: inroot ! On Entry: Index of root processor (default: 0) ! On Exit : unchanged. ! module psb_read_mat_mod interface read_mat module procedure dreadmat, zreadmat end interface interface read_rhs module procedure dread_rhs, zread_rhs end interface contains subroutine dreadmat (filename, a, ictxt, inroot) use psb_base_mod use psb_mmio_mod implicit none integer :: ictxt type(psb_dspmat_type) :: a character(len=*) :: filename integer, optional :: inroot integer, parameter :: infile = 2 integer :: info, root, np, me if (present(inroot)) then root = inroot else root = 0 end if call psb_info(ictxt, me, np) if (me == root) then write(*, '("Reading matrix...")') ! open input file call mm_mat_read(a,info,infile,filename) if (info /= 0) then write(0,*) 'Error return from MM_MAT_READ ',info call psb_abort(ictxt) ! Unexpected End of File endif end if return end subroutine dreadmat subroutine dread_rhs (filename, b, ictxt, inroot) use psb_base_mod implicit none integer :: ictxt character :: filename*(*) integer, optional :: inroot integer, parameter :: infile = 2 integer :: nrow, ncol, i,root, np, me, ircode, j character :: mmheader*15, fmt*15, object*10, type*10, sym*15,& & line*1024 real(kind(1.0d0)), allocatable :: b(:,:) if (present(inroot)) then root = inroot else root = 0 end if call psb_info(ictxt, me, np) if (me == root) then write(*, '("Reading rhs...")') ! open input file open(infile,file=filename, status='old', err=901, action="read") read(infile,fmt=*, end=902) mmheader, object, fmt, type, sym write(0,*)'obj fmt',object, fmt if ( (object .ne. 'matrix').or.(fmt.ne.'array')) then write(0,*) 'read_rhs: input file type not yet supported' call psb_abort(ictxt) end if do read(infile,fmt='(a)') line if (line(1:1) /= '%') exit end do read(line,fmt=*)nrow,ncol if ((tolower(type) == 'real').and.(tolower(sym) == 'general')) then allocate(b(nrow,ncol),stat = ircode) if (ircode /= 0) goto 993 read(infile,fmt=*,end=902) ((b(i,j), i=1,nrow),j=1,ncol) else write(0,*) 'read_rhs: rhs type not yet supported' call psb_abort(ictxt) end if ! read right hand sides write(*,*) 'end read_rhs' end if return ! open failed 901 write(0,*) 'read_rhs: could not open file ',& & infile,' for input' call psb_abort(ictxt) ! unexpected end of file 902 write(0,*) 'read_rhs: unexpected end of file ',infile,& & ' during input' call psb_abort(ictxt) ! allocation failed 993 write(0,*) 'read_rhs: memory allocation failure' call psb_abort(ictxt) end subroutine dread_rhs subroutine zreadmat (filename, a, ictxt, inroot) use psb_base_mod use psb_mmio_mod implicit none integer :: ictxt type(psb_zspmat_type) :: a character(len=*) :: filename integer, optional :: inroot integer, parameter :: infile = 2 integer :: info, root, np, me if (present(inroot)) then root = inroot else root = 0 end if call psb_info(ictxt, me, np) if (me == root) then write(*, '("Reading matrix...")') ! open input file call mm_mat_read(a,info,infile,filename) if (info /= 0) then write(0,*) 'Error return from MM_MAT_READ ',info call psb_abort(ictxt) ! Unexpected End of File endif end if return end subroutine zreadmat subroutine zread_rhs (filename, b, ictxt, inroot) use psb_base_mod implicit none integer :: ictxt character :: filename*(*) integer, optional :: inroot integer, parameter :: infile = 2 integer :: nrow, ncol, i,root, np, me, ircode, j character :: mmheader*15, fmt*15, object*10, type*10, sym*15,& & line*1024 real(kind(1.d0)) :: bre, bim complex(kind(1.0d0)), allocatable :: b(:,:) if (present(inroot)) then root = inroot else root = 0 end if call psb_info(ictxt, me, np) if (me == root) then write(*, '("Reading rhs...")') ! open input file open(infile,file=filename, status='old', err=901, action="read") read(infile,fmt=*, end=902) mmheader, object, fmt, type, sym !!$ write(0,*)'obj fmt',object, fmt if ( (object .ne. 'matrix').or.(fmt.ne.'array')) then write(0,*) 'read_rhs: input file type not yet supported' call psb_abort(ictxt) end if do read(infile,fmt='(a)') line if (line(1:1) /= '%') exit end do read(line,fmt=*)nrow,ncol if ((tolower(type) == 'complex').and.(tolower(sym) == 'general')) then allocate(b(nrow,ncol),stat = ircode) if (ircode /= 0) goto 993 do j=1, ncol do i=1, nrow read(infile,fmt=*,end=902) bre,bim b(i,j) = cmplx(bre,bim) end do end do else write(0,*) 'read_rhs: rhs type not yet supported' call psb_abort(ictxt) end if ! read right hand sides write(*,*) 'end read_rhs' end if return ! open failed 901 write(0,*) 'read_rhs: could not open file ',& & infile,' for input' call psb_abort(ictxt) ! unexpected end of file 902 write(0,*) 'read_rhs: unexpected end of file ',infile,& & ' during input' call psb_abort(ictxt) ! allocation failed 993 write(0,*) 'read_rhs: memory allocation failure' call psb_abort(ictxt) end subroutine zread_rhs end module psb_read_mat_mod