!!$ !!$ 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. 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File: psb_cdalv.f90 ! ! Subroutine: psb_cdalv ! Allocate descriptor by means of a global map vector V: index I ! is assigned to process V(I). It is assumed that V is identical ! on all calling processes. ! ! ! Arguments: ! v - integer(psb_ipk_), dimension(:). The array containg the partitioning scheme. ! ictxt - integer. The communication context. ! desc - type(psb_desc_type). The communication descriptor. ! info - integer. Return code ! flag - integer. Are V's contents 0- or 1-based? subroutine psb_cdalv(v, ictxt, desc, info, flag) use psb_base_mod use psi_mod use psb_repl_map_mod use psb_glist_map_mod use psb_hash_map_mod implicit None !....Parameters... integer(psb_ipk_), intent(in) :: ictxt, v(:) integer(psb_ipk_), intent(in), optional :: flag integer(psb_ipk_), intent(out) :: info type(psb_desc_type), intent(out) :: desc !locals integer(psb_ipk_) :: counter,i,j,np,me,loc_row,err,& & loc_col,nprocs,m,n,itmpov, k,glx,& & l_ov_ix,l_ov_el,idx, flag_, err_act integer(psb_ipk_) :: int_err(5),exch(3) integer(psb_ipk_), allocatable :: temp_ovrlap(:) integer(psb_ipk_) :: debug_level, debug_unit character(len=20) :: name if(psb_get_errstatus() /= 0) return debug_unit = psb_get_debug_unit() debug_level = psb_get_debug_level() info = psb_success_ err = 0 name = 'psb_cdalv' call psb_info(ictxt, me, np) if (debug_level >= psb_debug_ext_) & & write(debug_unit,*) me,' ',trim(name),': ',np,me m = size(v) n = m !... check m and n parameters.... if (m < 1) then info = psb_err_iarg_neg_ int_err(1) = 1 int_err(2) = m else if (n < 1) then info = psb_err_iarg_neg_ int_err(1) = 2 int_err(2) = n else if (size(v)1)) then info = 6 err=info call psb_errpush(info,name) goto 9999 end if ! count local rows number loc_row = max(1,(m+np-1)/np) ! allocate work vector allocate(temp_ovrlap(2),stat=info) if (info /= psb_success_) then info=psb_err_alloc_request_ int_err(1)=2*m+psb_mdata_size_ call psb_errpush(info,name,i_err=int_err,a_err='integer') goto 9999 endif if (debug_level >= psb_debug_ext_) & & write(debug_unit,*) me,' ',trim(name),': starting main loop' ,info counter = 0 itmpov = 0 temp_ovrlap(:) = -1 do i=1,m if (((v(i)-flag_) > np-1).or.((v(i)-flag_) < 0)) then info=psb_err_partfunc_wrong_pid_ int_err(1)=3 int_err(2)=v(i) - flag_ int_err(3)=i exit end if if ((v(i)-flag_) == me) then ! this point belongs to me counter=counter+1 end if enddo loc_row=counter ! ! We have to decide whether we have a "large" index space. ! if (np == 1) then allocate(psb_repl_map :: desc%indxmap, stat=info) else if (psb_cd_choose_large_state(ictxt,m)) then allocate(psb_hash_map :: desc%indxmap, stat=info) if (info == 0) allocate(desc%indxmap%tempvg(m),stat=info) if (info ==0) desc%indxmap%tempvg(1:m) = v(1:m) - flag_ else allocate(psb_glist_map :: desc%indxmap, stat=info) end if end if select type(aa => desc%indxmap) type is (psb_repl_map) call aa%repl_map_init(ictxt,m,info) type is (psb_hash_map) call aa%hash_map_init(ictxt,v,info) type is (psb_glist_map) call aa%glist_map_init(ictxt,v,info) class default ! This cannot happen info = psb_err_internal_error_ call psb_errpush(info,name) Goto 9999 end select call psi_bld_tmpovrl(temp_ovrlap,desc,info) deallocate(temp_ovrlap,stat=info) if (info /= psb_success_) then info=psb_err_alloc_dealloc_ call psb_errpush(info,name) goto 9999 endif if (debug_level >= psb_debug_ext_) & & write(debug_unit,*) me,' ',trim(name),': end' 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 psb_cdalv