!!$ !!$ Parallel Sparse BLAS version 2.2 !!$ (C) Copyright 2006/2007/2008 !!$ 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. !!$ !!$ ! ! ! File: psi_crea_index.f90 ! ! Subroutine: psb_crea_index ! Converts a list of data exchanges from build format to assembled format. ! See psi_desc_index for a description of the formats. ! Works by first finding a suitable ordering for the data exchanges, ! then doing the actual conversion. ! ! Arguments: ! desc_a - type(psb_desc_type) The descriptor; in this context only the index ! mapping parts are used. ! index_in(:) - integer The index list, build format ! index_out(:) - integer, allocatable The index list, assembled format ! glob_idx - logical Whether the input indices are in local or global ! numbering; the global numbering is used when ! converting the overlap exchange lists. ! nxch - integer The number of data exchanges on the calling process ! nsnd - integer Total send buffer size on the calling process ! nrcv - integer Total receive buffer size on the calling process ! ! subroutine psi_crea_index(desc_a,index_in,index_out,glob_idx,nxch,nsnd,nrcv,info) use psb_realloc_mod use psb_descriptor_type use psb_error_mod use psb_penv_mod use psi_mod, psb_protect_name => psi_crea_index implicit none type(psb_desc_type), intent(in) :: desc_a integer, intent(out) :: info,nxch,nsnd,nrcv integer, intent(in) :: index_in(:) integer, allocatable :: index_out(:) logical :: glob_idx ! ....local scalars... integer :: ictxt, me, np, mode, err_act, dl_lda ! ...parameters... integer, allocatable :: dep_list(:,:), length_dl(:) integer,parameter :: root=psb_root_,no_comm=-1 integer :: debug_level, debug_unit character(len=20) :: name info = 0 name='psi_crea_index' call psb_erractionsave(err_act) debug_unit = psb_get_debug_unit() debug_level = psb_get_debug_level() ictxt = psb_cd_get_context(desc_a) call psb_info(ictxt,me,np) if (np == -1) then info = 2010 call psb_errpush(info,name) goto 9999 endif ! allocate dependency list ! This should be computed more efficiently to save space when ! the number of processors becomes very high dl_lda=np+1 allocate(dep_list(max(1,dl_lda),0:np),length_dl(0:np),stat=info) if (info /= 0) then call psb_errpush(4010,name,a_err='Allocate') goto 9999 end if ! ...extract dependence list (ordered list of identifer process ! which every process must communcate with... if (debug_level >= psb_debug_inner_) & & write(debug_unit,*) me,' ',trim(name),': calling extract_dep_list' mode = 1 call psi_extract_dep_list(desc_a%matrix_data,index_in,& & dep_list,length_dl,np,max(1,dl_lda),mode,info) if(info /= 0) then call psb_errpush(4010,name,a_err='extrct_dl') goto 9999 end if if (debug_level >= psb_debug_inner_) & & write(debug_unit,*) me,' ',trim(name),': from extract_dep_list',& & me,length_dl(0),index_in(1), ':',dep_list(:length_dl(me),me) ! ...now process root contains dependence list of all processes... if (debug_level >= psb_debug_inner_) & & write(debug_unit,*) me,' ',trim(name),': root sorting dep list' call psi_dl_check(dep_list,max(1,dl_lda),np,length_dl) ! ....now i can sort dependency lists. call psi_sort_dl(dep_list,length_dl,np,info) if(info /= 0) then call psb_errpush(4010,name,a_err='psi_sort_dl') goto 9999 end if if(debug_level >= psb_debug_inner_)& & write(debug_unit,*) me,' ',trim(name),': calling psi_desc_index',& & size(index_out) ! Do the actual format conversion. call psi_desc_index(desc_a,index_in,dep_list(1:,me),& & length_dl(me),nsnd,nrcv, index_out,glob_idx,info) if(debug_level >= psb_debug_inner_) & & write(debug_unit,*) me,' ',trim(name),': out of psi_desc_index',& & size(index_out) nxch = length_dl(me) if(info /= 0) then call psb_errpush(4010,name,a_err='psi_desc_index') goto 9999 end if deallocate(dep_list,length_dl) if(debug_level >= psb_debug_inner_) & & write(debug_unit,*) me,' ',trim(name),': done' call psb_erractionrestore(err_act) return 9999 continue call psb_erractionrestore(err_act) if (err_act == psb_act_abort_) then call psb_error(ictxt) return end if return end subroutine psi_crea_index