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309 lines
9.7 KiB
Fortran
309 lines
9.7 KiB
Fortran
!
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! Parallel Sparse BLAS version 3.5
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! (C) Copyright 2006-2018
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! Salvatore Filippone
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! Alfredo Buttari
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!
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! Redistribution and use in source and binary forms, with or without
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! modification, are permitted provided that the following conditions
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! are met:
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! 1. Redistributions of source code must retain the above copyright
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! notice, this list of conditions and the following disclaimer.
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! 2. Redistributions in binary form must reproduce the above copyright
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! notice, this list of conditions, and the following disclaimer in the
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! documentation and/or other materials provided with the distribution.
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! 3. The name of the PSBLAS group or the names of its contributors may
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! not be used to endorse or promote products derived from this
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! software without specific written permission.
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!
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! THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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! ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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! TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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! PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PSBLAS GROUP OR ITS CONTRIBUTORS
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! BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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! CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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! SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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! INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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! CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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! ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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! POSSIBILITY OF SUCH DAMAGE.
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!
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!
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!
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! Purpose:
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! Provide a set of subroutines to define a data distribution based on
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! a graph partitioning routine from METIS. May serve as the basis
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! for interfacing other graph partitioning tools.
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!
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! Subroutines:
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!
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! BUILD_MTPART(A,NPARTS): This subroutine will be called by the root
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! process to build define the data distribuition mapping.
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! Input parameters:
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! TYPE(D_SPMAT) :: A The input matrix. The coefficients are
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! ignored; only the structure is used.
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! integer(psb_ipk_) :: NPARTS How many parts we are requiring to the
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! partition utility
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!
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! DISTR_MTPART(ROOT,ICTXT): This subroutine will be called by
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! all processes to distribute the information computed by the root
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! process, to be used subsequently.
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!
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!
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! PART_GRAPH : The subroutine to be passed to PSBLAS sparse library;
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! uses information prepared by the previous two subroutines.
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!
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module psb_metispart_mod
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use psb_base_mod, only : psb_sspmat_type, psb_cspmat_type,&
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& psb_dspmat_type, psb_zspmat_type, psb_err_unit, &
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& psb_ipk_, psb_lpk_, psb_mpk_, psb_epk_, psb_spk_,&
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& psb_s_csr_sparse_mat, psb_d_csr_sparse_mat, &
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& psb_c_csr_sparse_mat, psb_z_csr_sparse_mat
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public part_graph, build_mtpart, distr_mtpart,&
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& getv_mtpart, free_part
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private
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integer(psb_ipk_), allocatable, save :: graph_vect(:)
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interface build_mtpart
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module procedure d_mat_build_mtpart, s_mat_build_mtpart,&
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& z_mat_build_mtpart, c_mat_build_mtpart
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end interface
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interface
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subroutine psi_build_mtpart(n,ja,irp,nparts,vect, weights)
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import :: psb_ipk_, psb_spk_
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implicit none
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integer(psb_ipk_), intent(in) :: n, nparts
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integer(psb_ipk_), intent(in) :: ja(:), irp(:)
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integer(psb_ipk_), allocatable, intent(inout) :: vect(:)
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real(psb_spk_),optional, intent(in) :: weights(:)
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end subroutine psi_build_mtpart
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end interface
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contains
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subroutine part_graph(global_indx,n,np,pv,nv)
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implicit none
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integer(psb_lpk_), intent(in) :: global_indx, n
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integer(psb_ipk_), intent(in) :: np
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integer(psb_ipk_), intent(out) :: nv
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integer(psb_ipk_), intent(out) :: pv(*)
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IF (.not.allocated(graph_vect)) then
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write(psb_err_unit,*) 'Fatal error in PART_GRAPH: vector GRAPH_VECT ',&
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& 'not initialized'
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return
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endif
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if ((global_indx<1).or.(global_indx > size(graph_vect))) then
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write(psb_err_unit,*) 'Fatal error in PART_GRAPH: index GLOBAL_INDX ',&
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& 'outside GRAPH_VECT bounds',global_indx,size(graph_vect)
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return
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endif
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nv = 1
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pv(nv) = graph_vect(global_indx)
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return
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end subroutine part_graph
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subroutine distr_mtpart(root, ictxt)
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use psb_base_mod
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implicit none
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integer(psb_ipk_) :: root, ictxt
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integer(psb_ipk_) :: me, np, info
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integer(psb_lpk_) :: n
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call psb_info(ictxt,me,np)
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if (.not.((root>=0).and.(root<np))) then
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write(psb_err_unit,*) 'Fatal error in DISTR_MTPART: invalid ROOT ',&
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& 'coordinates '
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call psb_abort(ictxt)
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return
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endif
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if (me == root) then
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if (.not.allocated(graph_vect)) then
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write(psb_err_unit,*) 'Fatal error in DISTR_MTPART: vector GRAPH_VECT ',&
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& 'not initialized'
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call psb_abort(ictxt)
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return
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endif
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n = size(graph_vect)
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call psb_bcast(ictxt,n,root=root)
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else
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call psb_bcast(ictxt,n,root=root)
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allocate(graph_vect(n),stat=info)
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if (info /= psb_success_) then
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write(psb_err_unit,*) 'Fatal error in DISTR_MTPART: memory allocation ',&
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& ' failure.'
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return
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endif
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endif
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call psb_bcast(ictxt,graph_vect(1:n),root=root)
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return
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end subroutine distr_mtpart
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subroutine getv_mtpart(ivg)
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implicit none
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integer(psb_ipk_), allocatable, intent(out) :: ivg(:)
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if (allocated(graph_vect)) then
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allocate(ivg(size(graph_vect)))
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ivg(:) = graph_vect(:)
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end if
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end subroutine getv_mtpart
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subroutine d_mat_build_mtpart(a,nparts,weights)
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use psb_base_mod
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implicit none
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type(psb_dspmat_type), intent(in) :: a
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integer(psb_ipk_) :: nparts
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real(psb_dpk_), optional :: weights(:)
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select type (aa=>a%a)
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type is (psb_d_csr_sparse_mat)
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call d_csr_build_mtpart(aa,nparts,weights)
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class default
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write(psb_err_unit,*) 'Sorry, right now we only take CSR input!'
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end select
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end subroutine d_mat_build_mtpart
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subroutine d_csr_build_mtpart(a,nparts,weights)
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use psb_base_mod
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implicit none
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type(psb_d_csr_sparse_mat), intent(in) :: a
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integer(psb_ipk_) :: nparts
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real(psb_dpk_), optional :: weights(:)
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real(psb_spk_), allocatable :: wgh_(:)
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if (present(weights)) then
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if (size(weights)==nparts) then
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wgh_ = weights
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end if
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end if
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if (allocated(wgh_)) then
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call psi_build_mtpart(a%get_nrows(),a%ja,a%irp,nparts,graph_vect,wgh_)
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else
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call psi_build_mtpart(a%get_nrows(),a%ja,a%irp,nparts,graph_vect)
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end if
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end subroutine d_csr_build_mtpart
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subroutine z_mat_build_mtpart(a,nparts,weights)
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use psb_base_mod
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implicit none
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type(psb_zspmat_type), intent(in) :: a
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integer(psb_ipk_) :: nparts
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real(psb_dpk_), optional :: weights(:)
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select type (aa=>a%a)
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type is (psb_z_csr_sparse_mat)
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call z_csr_build_mtpart(aa,nparts,weights)
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class default
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write(psb_err_unit,*) 'Sorry, right now we only take CSR input!'
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end select
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end subroutine z_mat_build_mtpart
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subroutine z_csr_build_mtpart(a,nparts,weights)
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use psb_base_mod
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implicit none
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type(psb_z_csr_sparse_mat), intent(in) :: a
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integer(psb_ipk_) :: nparts
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real(psb_dpk_), optional :: weights(:)
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real(psb_spk_), allocatable :: wgh_(:)
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if (present(weights)) then
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if (size(weights)==nparts) then
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wgh_ = weights
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end if
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end if
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if (allocated(wgh_)) then
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call psi_build_mtpart(a%get_nrows(),a%ja,a%irp,nparts,graph_vect,wgh_)
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else
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call psi_build_mtpart(a%get_nrows(),a%ja,a%irp,nparts,graph_vect)
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end if
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end subroutine z_csr_build_mtpart
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subroutine s_mat_build_mtpart(a,nparts,weights)
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use psb_base_mod
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implicit none
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type(psb_sspmat_type), intent(in) :: a
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integer(psb_ipk_) :: nparts
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real(psb_spk_), optional :: weights(:)
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select type (aa=>a%a)
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type is (psb_s_csr_sparse_mat)
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call s_csr_build_mtpart(aa,nparts,weights)
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class default
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write(psb_err_unit,*) 'Sorry, right now we only take CSR input!'
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end select
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end subroutine s_mat_build_mtpart
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subroutine c_mat_build_mtpart(a,nparts,weights)
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use psb_base_mod
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implicit none
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type(psb_cspmat_type), intent(in) :: a
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integer(psb_ipk_) :: nparts
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real(psb_spk_), optional :: weights(:)
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select type (aa=>a%a)
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type is (psb_c_csr_sparse_mat)
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call c_csr_build_mtpart(aa,nparts,weights)
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class default
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write(psb_err_unit,*) 'Sorry, right now we only take CSR input!'
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end select
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end subroutine c_mat_build_mtpart
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subroutine c_csr_build_mtpart(a,nparts,weights)
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use psb_base_mod
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implicit none
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type(psb_c_csr_sparse_mat), intent(in) :: a
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integer(psb_ipk_) :: nparts
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real(psb_spk_), optional :: weights(:)
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call psi_build_mtpart(a%get_nrows(),a%ja,a%irp,nparts,graph_vect,weights)
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end subroutine c_csr_build_mtpart
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subroutine s_csr_build_mtpart(a,nparts,weights)
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use psb_base_mod
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implicit none
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type(psb_s_csr_sparse_mat), intent(in) :: a
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integer(psb_ipk_) :: nparts
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real(psb_spk_), optional :: weights(:)
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call psi_build_mtpart(a%get_nrows(),a%ja,a%irp,nparts,graph_vect,weights)
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end subroutine s_csr_build_mtpart
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!
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! WARNING: called IRET otherwise Intel compiler complains,
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! methinks it's a compiler bug, will need to report.
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!
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subroutine free_part(iret)
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implicit none
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integer(psb_ipk_), intent(out) :: iret
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deallocate(graph_vect,stat=iret)
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return
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end subroutine free_part
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end module psb_metispart_mod
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