!!$ !!$ Parallel Sparse BLAS version 3.4 !!$ (C) Copyright 2006, 2010, 2015 !!$ 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. !!$ !!$ ! File: psb_sscatter.f90 ! ! Subroutine: psb_sscatterm ! This subroutine scatters a global matrix locally owned by one process ! into pieces that are local to alle the processes. ! ! Arguments: ! globx - real,dimension(:,:). The global matrix to scatter. ! locx - real,dimension(:,:). The local piece of the distributed matrix. ! desc_a - type(psb_desc_type). The communication descriptor. ! info - integer. Error code. ! iroot - integer(optional). The process that owns the global matrix. ! If -1 all the processes have a copy. ! Default -1 subroutine psb_sscatterm(globx, locx, desc_a, info, root) use psb_base_mod, psb_protect_name => psb_sscatterm #ifdef MPI_MOD use mpi #endif implicit none #ifdef MPI_H include 'mpif.h' #endif real(psb_spk_), intent(out), allocatable :: locx(:,:) real(psb_spk_), intent(in) :: globx(:,:) type(psb_desc_type), intent(in) :: desc_a integer(psb_ipk_), intent(out) :: info integer(psb_ipk_), intent(in), optional :: root ! locals integer(psb_mpik_) :: ictxt, np, me, iroot, icomm, myrank, rootrank, iam integer(psb_ipk_) :: ierr(5), err_act, m, n, i, j, idx, nrow, iglobx, jglobx,& & ilocx, jlocx, lda_locx, lda_globx, lock, globk, k, maxk, & & col,pos real(psb_spk_),allocatable :: scatterv(:) integer(psb_ipk_), allocatable :: displ(:), l_t_g_all(:), all_dim(:), ltg(:) character(len=20) :: name, ch_err name='psb_scatterm' if(psb_get_errstatus() /= 0) return info=psb_success_ call psb_erractionsave(err_act) ictxt=desc_a%get_context() ! check on blacs grid call psb_info(ictxt, iam, np) if (np == -1) then info = psb_err_context_error_ call psb_errpush(info,name) goto 9999 endif if (present(root)) then iroot = root if((iroot < -1).or.(iroot >= np)) then info=psb_err_input_value_invalid_i_ ierr(1)=5; ierr(2)=iroot call psb_errpush(info,name,i_err=ierr) goto 9999 end if else iroot = psb_root_ end if iglobx = 1 jglobx = 1 lda_globx = size(globx,1) m = desc_a%get_global_rows() n = desc_a%get_global_cols() call psb_get_mpicomm(ictxt,icomm) call psb_get_rank(myrank,ictxt,me) if (iroot==-1) then lda_globx = size(globx, 1) k = size(globx,2) else if (iam==iroot) then k = size(globx,2) lda_globx = size(globx, 1) end if call psb_bcast(ictxt,k,root=iroot) call psb_bcast(ictxt,lda_globx,root=iroot) end if m = desc_a%get_global_rows() n = desc_a%get_global_cols() ! there should be a global check on k here!!! call psb_chkglobvect(m,n,lda_globx,iglobx,jglobx,desc_a,info) if(info /= psb_success_) then info=psb_err_from_subroutine_ ch_err='psb_chk(glob)vect' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if nrow=desc_a%get_local_rows() ! root has to gather size information allocate(displ(np),all_dim(np),ltg(nrow),stat=info) if(info /= psb_success_) then info=psb_err_from_subroutine_ ch_err='Allocate' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if do i=1, nrow ltg(i) = i end do call psb_loc_to_glob(ltg(1:nrow),desc_a,info) call psb_geall(locx,desc_a,info,n=k) if ((iroot == -1).or.(np == 1)) then ! extract my chunk do j=1,k do i=1, nrow locx(i,j)=globx(ltg(i),j) end do end do else call psb_get_rank(rootrank,ictxt,iroot) call mpi_gather(nrow,1,psb_mpi_ipk_integer,all_dim,& & 1,psb_mpi_ipk_integer,rootrank,icomm,info) if (iam == iroot) then displ(1)=0 do i=2,np displ(i)=displ(i-1)+all_dim(i-1) end do ! root has to gather loc_glob from each process allocate(l_t_g_all(sum(all_dim)),scatterv(sum(all_dim)),stat=info) else ! ! This is to keep debugging compilers from being upset by ! calling an external MPI function with an unallocated array; ! the Fortran side would complain even if the MPI side does ! not use the unallocated stuff. ! allocate(l_t_g_all(1),scatterv(1),stat=info) end if if(info /= psb_success_) then info=psb_err_from_subroutine_ ch_err='Allocate' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if call mpi_gatherv(ltg,nrow,& & psb_mpi_ipk_integer,l_t_g_all,all_dim,& & displ,psb_mpi_ipk_integer,rootrank,icomm,info) do col=1, k ! prepare vector to scatter if(iam == iroot) then do i=1,np pos=displ(i) do j=1, all_dim(i) idx=l_t_g_all(pos+j) scatterv(pos+j)=globx(idx,col) end do end do end if ! scatter call mpi_scatterv(scatterv,all_dim,displ,& & psb_mpi_r_spk_,locx(1,col),nrow,& & psb_mpi_r_spk_,rootrank,icomm,info) end do deallocate(l_t_g_all, scatterv,stat=info) if(info /= psb_success_) then info=psb_err_from_subroutine_ ch_err='deallocate' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if end if deallocate(all_dim, displ, ltg,stat=info) if(info /= psb_success_) then info=psb_err_from_subroutine_ ch_err='deallocate' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if call psb_erractionrestore(err_act) return 9999 call psb_error_handler(ictxt,err_act) return end subroutine psb_sscatterm !!$ !!$ Parallel Sparse BLAS version 3.4 !!$ (C) Copyright 2006, 2010, 2015 !!$ 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. !!$ !!$ ! Subroutine: psb_sscatterv ! This subroutine scatters a global vector locally owned by one process ! into pieces that are local to alle the processes. ! ! Arguments: ! globx - real,dimension(:). The global vector to scatter. ! locx - real,dimension(:). The local piece of the ditributed vector. ! desc_a - type(psb_desc_type). The communication descriptor. ! info - integer. Return code ! iroot - integer(optional). The process that owns the global vector. If -1 all ! the processes have a copy. ! subroutine psb_sscatterv(globx, locx, desc_a, info, root) use psb_base_mod, psb_protect_name => psb_sscatterv #ifdef MPI_MOD use mpi #endif implicit none #ifdef MPI_H include 'mpif.h' #endif real(psb_spk_), intent(out), allocatable :: locx(:) real(psb_spk_), intent(in) :: globx(:) type(psb_desc_type), intent(in) :: desc_a integer(psb_ipk_), intent(out) :: info integer(psb_ipk_), intent(in), optional :: root ! locals integer(psb_mpik_) :: ictxt, np, iam, iroot, iiroot, icomm, myrank, rootrank integer(psb_ipk_) :: ierr(5), err_act, m, n, i, j, idx, nrow, iglobx, jglobx,& & ilocx, jlocx, lda_locx, lda_globx, k, pos, ilx, jlx real(psb_spk_), allocatable :: scatterv(:) integer(psb_ipk_), allocatable :: displ(:), l_t_g_all(:), all_dim(:), ltg(:) character(len=20) :: name, ch_err integer(psb_ipk_) :: debug_level, debug_unit name='psb_scatterv' if (psb_get_errstatus() /= 0) return info=psb_success_ call psb_erractionsave(err_act) ictxt=desc_a%get_context() debug_unit = psb_get_debug_unit() debug_level = psb_get_debug_level() ! check on blacs grid call psb_info(ictxt, iam, np) if (np == -1) then info = psb_err_context_error_ call psb_errpush(info,name) goto 9999 endif if (present(root)) then iroot = root if((iroot < -1).or.(iroot > np)) then info=psb_err_input_value_invalid_i_ ierr(1) = 5; ierr(2)=iroot call psb_errpush(info,name,i_err=ierr) goto 9999 end if else iroot = psb_root_ end if call psb_get_mpicomm(ictxt,icomm) call psb_get_rank(myrank,ictxt,iam) iglobx = 1 jglobx = 1 ilocx = 1 jlocx = 1 lda_globx = size(globx, 1) m = desc_a%get_global_rows() n = desc_a%get_global_cols() k = 1 ! there should be a global check on k here!!! call psb_chkglobvect(m,n,lda_globx,iglobx,jglobx,desc_a,info) if(info /= psb_success_) then info=psb_err_from_subroutine_ ch_err='psb_chk(glob)vect' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if nrow = desc_a%get_local_rows() allocate(displ(np),all_dim(np),ltg(nrow),stat=info) if(info /= psb_success_) then info=psb_err_from_subroutine_ ch_err='Allocate' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if do i=1, nrow ltg(i) = i end do call psb_loc_to_glob(ltg(1:nrow),desc_a,info) call psb_geall(locx,desc_a,info) if ((iroot == -1).or.(np == 1)) then ! extract my chunk do i=1, nrow locx(i)=globx(ltg(i)) end do else call psb_get_rank(rootrank,ictxt,iroot) call mpi_gather(nrow,1,psb_mpi_ipk_integer,all_dim,& & 1,psb_mpi_ipk_integer,rootrank,icomm,info) if(iam == iroot) then displ(1)=0 do i=2,np displ(i)=displ(i-1) + all_dim(i-1) end do if (debug_level >= psb_debug_inner_) then write(debug_unit,*) iam,' ',trim(name),' displ:',displ(1:np), & &' dim',all_dim(1:np), sum(all_dim) endif ! root has to gather loc_glob from each process allocate(l_t_g_all(sum(all_dim)),scatterv(sum(all_dim)),stat=info) else ! ! This is to keep debugging compilers from being upset by ! calling an external MPI function with an unallocated array; ! the Fortran side would complain even if the MPI side does ! not use the unallocated stuff. ! allocate(l_t_g_all(1),scatterv(1),stat=info) end if if(info /= psb_success_) then info=psb_err_from_subroutine_ ch_err='Allocate' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if call mpi_gatherv(ltg,nrow,& & psb_mpi_ipk_integer,l_t_g_all,all_dim,& & displ,psb_mpi_ipk_integer,rootrank,icomm,info) ! prepare vector to scatter if (iam == iroot) then do i=1,np pos=displ(i) do j=1, all_dim(i) idx=l_t_g_all(pos+j) scatterv(pos+j)=globx(idx) end do end do end if call mpi_scatterv(scatterv,all_dim,displ,& & psb_mpi_r_spk_,locx,nrow,& & psb_mpi_r_spk_,rootrank,icomm,info) deallocate(l_t_g_all, scatterv,stat=info) if(info /= psb_success_) then info=psb_err_from_subroutine_ ch_err='deallocate' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if end if deallocate(all_dim, displ, ltg,stat=info) if(info /= psb_success_) then info=psb_err_from_subroutine_ ch_err='deallocate' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if call psb_erractionrestore(err_act) return 9999 call psb_error_handler(ictxt,err_act) return end subroutine psb_sscatterv !!$ !!$ Parallel Sparse BLAS version 3.4 !!$ (C) Copyright 2006, 2010, 2015 !!$ 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. !!$ !!$ subroutine psb_sscatter_vect(globx, locx, desc_a, info, root, mold) use psb_base_mod, psb_protect_name => psb_sscatter_vect implicit none type(psb_s_vect_type), intent(inout) :: locx real(psb_spk_), intent(in) :: globx(:) type(psb_desc_type), intent(in) :: desc_a integer(psb_ipk_), intent(out) :: info integer(psb_ipk_), intent(in), optional :: root class(psb_s_base_vect_type), intent(in), optional :: mold ! locals integer(psb_mpik_) :: ictxt, np, me, icomm, myrank, rootrank integer(psb_ipk_) :: ierr(5), err_act, m, n, i, j, idx, nrow, iglobx, jglobx,& & ilocx, jlocx, lda_locx, lda_globx, k, pos, ilx, jlx real(psb_spk_), allocatable :: vlocx(:) character(len=20) :: name, ch_err integer(psb_ipk_) :: debug_level, debug_unit name='psb_scatter_vect' if (psb_get_errstatus() /= 0) return info=psb_success_ call psb_erractionsave(err_act) ictxt=desc_a%get_context() debug_unit = psb_get_debug_unit() debug_level = psb_get_debug_level() ! check on blacs grid call psb_info(ictxt, me, np) if (np == -1) then info = psb_err_context_error_ call psb_errpush(info,name) goto 9999 endif if (info == psb_success_) call psb_scatter(globx, vlocx, desc_a, info, root=root) if (info /= psb_success_) then info = psb_err_from_subroutine_ call psb_errpush(info,name,a_err='psb_scatterv') goto 9999 endif call locx%bld(vlocx,mold=mold) call psb_erractionrestore(err_act) return 9999 call psb_error_handler(ictxt,err_act) return end subroutine psb_sscatter_vect