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psblas3/util/psb_mat_dist_mod.f90

385 lines
15 KiB
Fortran

!!$
!!$ Parallel Sparse BLAS version 3.0
!!$ (C) Copyright 2006, 2007, 2008, 2009, 2010
!!$ Salvatore Filippone University of Rome Tor Vergata
!!$ Alfredo Buttari CNRS-IRIT, Toulouse
!!$
!!$ 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.
!!$
!!$
module psb_mat_dist_mod
interface psb_matdist
subroutine smatdist(a_glob, a, ictxt, desc_a,&
& b_glob, b, info, parts, v, inroot,fmt,mold)
!
! an utility subroutine to distribute a matrix among processors
! according to a user defined data distribution, using
! sparse matrix subroutines.
!
! type(d_spmat) :: a_glob
! on entry: this contains the global sparse matrix as follows:
! a%fida == 'csr'
! a%aspk 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
! on exit : undefined, with unassociated pointers.
!
! type(d_spmat) :: a
! on entry: fresh variable.
! on exit : this will contain the local sparse matrix.
!
! interface parts
! ! .....user passed subroutine.....
! subroutine parts(global_indx,n,np,pv,nv)
! implicit none
! integer, intent(in) :: global_indx, n, np
! integer, intent(out) :: nv
! integer, intent(out) :: pv(*)
!
! end subroutine parts
! end interface
! on entry: subroutine providing user defined data distribution.
! for each global_indx the subroutine should return
! the list pv of all processes owning the row with
! that index; the list will contain nv entries.
! usually nv=1; if nv >1 then we have an overlap in the data
! distribution.
!
! integer :: ictxt
! on entry: blacs context.
! on exit : unchanged.
!
! type (desc_type) :: desc_a
! on entry: fresh variable.
! on exit : the updated array descriptor
!
! real(psb_dpk_), optional :: b_glob(:)
! on entry: this contains right hand side.
! on exit :
!
! real(psb_dpk_), allocatable, optional :: b(:)
! on entry: fresh variable.
! on exit : this will contain the local right hand side.
!
! integer, optional :: inroot
! on entry: specifies processor holding a_glob. default: 0
! on exit : unchanged.
!
use psb_sparse_mod, only : psb_sspmat_type, psb_desc_type, psb_spk_,&
& psb_s_base_sparse_mat
implicit none
! parameters
type(psb_sspmat_type) :: a_glob
real(psb_spk_) :: b_glob(:)
integer :: ictxt
type(psb_sspmat_type) :: a
real(psb_spk_), allocatable :: b(:)
type(psb_desc_type) :: desc_a
integer, intent(out) :: info
integer, optional :: inroot
character(len=*), optional :: fmt
class(psb_s_base_sparse_mat), optional :: mold
integer :: v(:)
interface
subroutine parts(global_indx,n,np,pv,nv)
implicit none
integer, intent(in) :: global_indx, n, np
integer, intent(out) :: nv
integer, intent(out) :: pv(*)
end subroutine parts
end interface
optional :: parts, v
end subroutine smatdist
subroutine dmatdist(a_glob, a, ictxt, desc_a,&
& b_glob, b, info, parts, v, inroot,fmt,mold)
!
! an utility subroutine to distribute a matrix among processors
! according to a user defined data distribution, using
! sparse matrix subroutines.
!
! type(d_spmat) :: a_glob
! on entry: this contains the global sparse matrix as follows:
! a%fida == 'csr'
! a%aspk 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
! on exit : undefined, with unassociated pointers.
!
! type(d_spmat) :: a
! on entry: fresh variable.
! on exit : this will contain the local sparse matrix.
!
! interface parts
! ! .....user passed subroutine.....
! subroutine parts(global_indx,n,np,pv,nv)
! implicit none
! integer, intent(in) :: global_indx, n, np
! integer, intent(out) :: nv
! integer, intent(out) :: pv(*)
!
! end subroutine parts
! end interface
! on entry: subroutine providing user defined data distribution.
! for each global_indx the subroutine should return
! the list pv of all processes owning the row with
! that index; the list will contain nv entries.
! usually nv=1; if nv >1 then we have an overlap in the data
! distribution.
!
! integer :: ictxt
! on entry: blacs context.
! on exit : unchanged.
!
! type (desc_type) :: desc_a
! on entry: fresh variable.
! on exit : the updated array descriptor
!
! real(psb_dpk_), optional :: b_glob(:)
! on entry: this contains right hand side.
! on exit :
!
! real(psb_dpk_), allocatable, optional :: b(:)
! on entry: fresh variable.
! on exit : this will contain the local right hand side.
!
! integer, optional :: inroot
! on entry: specifies processor holding a_glob. default: 0
! on exit : unchanged.
!
use psb_sparse_mod, only : psb_dspmat_type, psb_dpk_, psb_desc_type,&
& psb_d_base_sparse_mat
implicit none
! parameters
type(psb_dspmat_type) :: a_glob
real(psb_dpk_) :: b_glob(:)
integer :: ictxt
type(psb_dspmat_type) :: a
real(psb_dpk_), allocatable :: b(:)
type(psb_desc_type) :: desc_a
integer, intent(out) :: info
integer, optional :: inroot
character(len=*), optional :: fmt
class(psb_d_base_sparse_mat), optional :: mold
integer :: v(:)
interface
subroutine parts(global_indx,n,np,pv,nv)
implicit none
integer, intent(in) :: global_indx, n, np
integer, intent(out) :: nv
integer, intent(out) :: pv(*)
end subroutine parts
end interface
optional :: parts, v
end subroutine dmatdist
subroutine cmatdist(a_glob, a, ictxt, desc_a,&
& b_glob, b, info, parts, v, inroot,fmt,mold)
!
! an utility subroutine to distribute a matrix among processors
! according to a user defined data distribution, using
! sparse matrix subroutines.
!
! type(d_spmat) :: a_glob
! on entry: this contains the global sparse matrix as follows:
! a%fida == 'csr'
! a%aspk 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
! on exit : undefined, with unassociated pointers.
!
! type(d_spmat) :: a
! on entry: fresh variable.
! on exit : this will contain the local sparse matrix.
!
! interface parts
! ! .....user passed subroutine.....
! subroutine parts(global_indx,n,np,pv,nv)
! implicit none
! integer, intent(in) :: global_indx, n, np
! integer, intent(out) :: nv
! integer, intent(out) :: pv(*)
!
! end subroutine parts
! end interface
! on entry: subroutine providing user defined data distribution.
! for each global_indx the subroutine should return
! the list pv of all processes owning the row with
! that index; the list will contain nv entries.
! usually nv=1; if nv >1 then we have an overlap in the data
! distribution.
!
! integer :: ictxt
! on entry: blacs context.
! on exit : unchanged.
!
! type (desc_type) :: desc_a
! on entry: fresh variable.
! on exit : the updated array descriptor
!
! real(psb_dpk_), optional :: b_glob(:)
! on entry: this contains right hand side.
! on exit :
!
! real(psb_dpk_), allocatable, optional :: b(:)
! on entry: fresh variable.
! on exit : this will contain the local right hand side.
!
! integer, optional :: inroot
! on entry: specifies processor holding a_glob. default: 0
! on exit : unchanged.
!
use psb_sparse_mod, only : psb_cspmat_type, psb_spk_, psb_desc_type,&
& psb_c_base_sparse_mat
implicit none
! parameters
type(psb_cspmat_type) :: a_glob
complex(psb_spk_) :: b_glob(:)
integer :: ictxt
type(psb_cspmat_type) :: a
complex(psb_spk_), allocatable :: b(:)
type(psb_desc_type) :: desc_a
integer, intent(out) :: info
integer, optional :: inroot
character(len=*), optional :: fmt
class(psb_c_base_sparse_mat), optional :: mold
integer :: v(:)
interface
subroutine parts(global_indx,n,np,pv,nv)
implicit none
integer, intent(in) :: global_indx, n, np
integer, intent(out) :: nv
integer, intent(out) :: pv(*)
end subroutine parts
end interface
optional :: parts, v
end subroutine cmatdist
subroutine zmatdist(a_glob, a, ictxt, desc_a,&
& b_glob, b, info, parts, v, inroot,fmt,mold)
!
! an utility subroutine to distribute a matrix among processors
! according to a user defined data distribution, using
! sparse matrix subroutines.
!
! type(d_spmat) :: a_glob
! on entry: this contains the global sparse matrix as follows:
! a%fida == 'csr'
! a%aspk 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
! on exit : undefined, with unassociated pointers.
!
! type(d_spmat) :: a
! on entry: fresh variable.
! on exit : this will contain the local sparse matrix.
!
! interface parts
! ! .....user passed subroutine.....
! subroutine parts(global_indx,n,np,pv,nv)
! implicit none
! integer, intent(in) :: global_indx, n, np
! integer, intent(out) :: nv
! integer, intent(out) :: pv(*)
!
! end subroutine parts
! end interface
! on entry: subroutine providing user defined data distribution.
! for each global_indx the subroutine should return
! the list pv of all processes owning the row with
! that index; the list will contain nv entries.
! usually nv=1; if nv >1 then we have an overlap in the data
! distribution.
!
! integer :: ictxt
! on entry: blacs context.
! on exit : unchanged.
!
! type (desc_type) :: desc_a
! on entry: fresh variable.
! on exit : the updated array descriptor
!
! real(psb_dpk_), optional :: b_glob(:)
! on entry: this contains right hand side.
! on exit :
!
! real(psb_dpk_), allocatable, optional :: b(:)
! on entry: fresh variable.
! on exit : this will contain the local right hand side.
!
! integer, optional :: inroot
! on entry: specifies processor holding a_glob. default: 0
! on exit : unchanged.
!
use psb_sparse_mod, only : psb_zspmat_type, psb_dpk_, psb_desc_type,&
& psb_z_base_sparse_mat
implicit none
! parameters
type(psb_zspmat_type) :: a_glob
complex(psb_dpk_) :: b_glob(:)
integer :: ictxt
type(psb_zspmat_type) :: a
complex(psb_dpk_), allocatable :: b(:)
type(psb_desc_type) :: desc_a
integer, intent(out) :: info
integer, optional :: inroot
character(len=*), optional :: fmt
class(psb_z_base_sparse_mat), optional :: mold
integer :: v(:)
interface
subroutine parts(global_indx,n,np,pv,nv)
implicit none
integer, intent(in) :: global_indx, n, np
integer, intent(out) :: nv
integer, intent(out) :: pv(*)
end subroutine parts
end interface
optional :: parts, v
end subroutine zmatdist
end interface
end module psb_mat_dist_mod