! ! Parallel Sparse BLAS version 3.5 ! (C) Copyright 2006-2018 ! Salvatore Filippone ! Alfredo Buttari ! ! 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. ! ! ! Purpose ! == = ==== ! ! Allocate special descriptor for replicated index space. ! ! ! ! INPUT ! == ==== ! M :(Global Input) Integer ! Total number of equations ! required. ! ! ctxt : (Global Input)Integer BLACS context for an NPx1 grid ! required. ! ! OUTPUT ! == ======= ! desc : TYPEDESC ! desc OUTPUT FIELDS: ! ! MATRIX_DATA : Pointer to integer Array ! contains some ! local and global information about matrix: ! ! NOTATION STORED IN EXPLANATION ! ------------ ---------------------- ------------------------------------- ! DEC_TYPE MATRIX_DATA[DEC_TYPE_] Decomposition type, temporarly is ! setted to 1( matrix not yet assembled) ! M MATRIX_DATA[M_] Total number of equations ! N MATRIX_DATA[N_] Total number of variables ! N_ROW MATRIX_DATA[N_ROW_] Number of local equations ! N_COL MATRIX_DATA[N_COL_] Number of local columns (see below) ! CTXT_A MATRIX_DATA[CTXT_] The BLACS context handle, ! indicating ! the global context of the operation ! on the matrix. ! The context itself is global. ! ! GLOB_TO_LOC Array of dimension equal to number of global ! rows/cols (MATRIX_DATA[M_]). On exit, ! for all global indices either: ! 1. The index belongs to the current process; the entry ! is set to the next free local row index. ! 2. The index belongs to process P (0<=P<=NP-1); the entry ! is set to ! -(NP+P+1) ! ! LOC_TO_GLOB An array of dimension equal to number of local cols N_COL ! i.e. all columns of the matrix such that there is at least ! one nonzero entry within the local row range. At the time ! this routine is called N_COL cannot be know, so we set ! N_COL=N_ROW, and dimension this vector on N_ROW plus an ! estimate. On exit the vector elements are set ! to the index of the corresponding entry in GLOB_TO_LOC, or ! to -1 for indices I>N_ROW. ! ! ! HALO_INDEX Not touched here, as it depends on the matrix pattern ! ! OVRLAP_INDEX On exit from this routine, the overlap indices are stored in ! triples (Proc, 1, Index), similar to the assembled format ! but neither optimized, nor deadlock free. ! List is terminated with -1 ! ! OVRLAP_ELEM On exit from this routine, just a list of pairs (index,#p). ! List is terminated with -1. ! ! ! END OF desc OUTPUT FIELDS ! ! subroutine psb_cdrep(m, ctxt, desc, info) use psb_base_mod use psi_mod use psb_repl_map_mod implicit None !....Parameters... integer(psb_lpk_), intent(in) :: m type(psb_ctxt_type), intent(in) :: ctxt integer(psb_ipk_), intent(out) :: info Type(psb_desc_type), intent(out) :: desc !locals integer(psb_ipk_) :: i,np,me,err,err_act integer(psb_lpk_) :: n integer(psb_lpk_) :: l_err(5),exch(2) integer(psb_ipk_) :: thalo(1), tovr(1), text(1) integer(psb_ipk_) :: debug_level, debug_unit character(len=20) :: name if(psb_get_errstatus() /= 0) return info=psb_success_ err=0 name = 'psb_cdrep' debug_unit = psb_get_debug_unit() debug_level = psb_get_debug_level() call psb_info(ctxt, me, np) if (debug_level >= psb_debug_ext_) & & write(debug_unit,*) me,' ',trim(name),': ',np n = m !... check m and n parameters.... if (m < 1) then info = psb_err_iarg_neg_ l_err(1) = 1 l_err(2) = m else if (n < 1) then info = psb_err_iarg_neg_ l_err(1) = 2 l_err(2) = n endif if (info /= psb_success_) then call psb_errpush(info,name,l_err=l_err) goto 9999 end if if (debug_level >= psb_debug_ext_) & & write(debug_unit,*) me,' ',trim(name),': doing global checks' !global check on m and n parameters if (me == psb_root_) then exch(1)=m exch(2)=n call psb_bcast(ctxt,exch(1:2),root=psb_root_) else call psb_bcast(ctxt,exch(1:2),root=psb_root_) if (exch(1) /= m) then info=psb_err_parm_differs_among_procs_ l_err(1)=1 else if (exch(2) /= n) then info=psb_err_parm_differs_among_procs_ l_err(1)=2 endif endif if (info /= psb_success_) then call psb_errpush(info,name,l_err=l_err) goto 9999 end if call psb_nullify_desc(desc) !count local rows number ! allocate work vector allocate(psb_repl_map :: desc%indxmap, stat=info) select type(aa => desc%indxmap) type is (psb_repl_map) call aa%repl_map_init(ctxt,m,info) class default ! This cannot happen info = psb_err_internal_error_ call psb_errpush(info,name) Goto 9999 end select tovr = -1 call psi_bld_tmpovrl(tovr,desc,info) if (debug_level >= psb_debug_ext_) & & write(debug_unit,*) me,' ',trim(name),': end' call psb_erractionrestore(err_act) return 9999 call psb_error_handler(ctxt,err_act) return end subroutine psb_cdrep