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psblas3/base/tools/psb_zsphalo.F90

395 lines
11 KiB
Fortran

!!$
!!$ 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: psb_zsphalo.f90
!
! Subroutine: psb_zsphalo
! This routine does the retrieval of remote matrix rows.
! Note that retrieval is done through GTBLK, therefore it should work
! for any matrix format in A; as for the output, default is CSR.
!
!
! Arguments:
! a - type(psb_zspmat_type) The local part of input matrix A
! desc_a - type(psb_desc_type). The communication descriptor.
! blck - type(psb_zspmat_type) The local part of output matrix BLCK
! info - integer. Return code
! rowcnv - logical Should row/col indices be converted
! colcnv - logical to/from global numbering when sent/received?
! default is .TRUE.
! rowscale - logical Should row/col indices on output be remapped
! colscale - logical from MIN:MAX to 1:(MAX-MIN+1) ?
! default is .FALSE.
! (commmon use is ROWSCALE=.TRUE., COLSCALE=.FALSE.)
! data - integer Which index list in desc_a should be used to retrieve
! rows, default psb_comm_halo_
! psb_comm_halo_ use halo_index
! psb_comm_ext_ use ext_index
! psb_comm_ovrl_ DISABLED for this routine.
!
Subroutine psb_zsphalo(a,desc_a,blk,info,rowcnv,colcnv,&
& rowscale,colscale,outfmt,data)
use psb_const_mod
use psb_serial_mod
use psb_descriptor_type
use psb_realloc_mod
use psb_tools_mod, psb_protect_name => psb_zsphalo
use psb_error_mod
use psb_penv_mod
#ifdef MPI_MOD
use mpi
#endif
Implicit None
#ifdef MPI_H
include 'mpif.h'
#endif
Type(psb_zspmat_type),Intent(in) :: a
Type(psb_zspmat_type),Intent(inout) :: blk
Type(psb_desc_type),Intent(in), target :: desc_a
integer, intent(out) :: info
logical, optional, intent(in) :: rowcnv,colcnv,rowscale,colscale
character(len=5), optional :: outfmt
integer, intent(in), optional :: data
! ...local scalars....
Integer :: np,me,counter,proc,i, &
& n_el_send,k,n_el_recv,ictxt, idx, r, tot_elem,&
& n_elem, j, ipx,mat_recv, iszs, iszr,idxs,idxr,nz,&
& irmin,icmin,irmax,icmax,data_,ngtz
Integer :: l1, icomm, err_act
Integer, allocatable :: sdid(:,:), brvindx(:),rvid(:,:), &
& rvsz(:), bsdindx(:),sdsz(:), iasnd(:), jasnd(:)
complex(kind(1.d0)), allocatable :: valsnd(:)
integer, pointer :: idxv(:)
logical :: rowcnv_,colcnv_,rowscale_,colscale_
character(len=5) :: outfmt_
integer :: debug_level, debug_unit
character(len=20) :: name, ch_err
if(psb_get_errstatus() /= 0) return
info=0
name='psb_zsphalo'
call psb_erractionsave(err_act)
debug_unit = psb_get_debug_unit()
debug_level = psb_get_debug_level()
if (debug_level >= psb_debug_outer_) &
& write(debug_unit,*) me,' ',trim(name),': Start'
if (present(rowcnv)) then
rowcnv_ = rowcnv
else
rowcnv_ = .true.
endif
if (present(colcnv)) then
colcnv_ = colcnv
else
colcnv_ = .true.
endif
if (present(rowscale)) then
rowscale_ = rowscale
else
rowscale_ = .false.
endif
if (present(colscale)) then
colscale_ = colscale
else
colscale_ = .false.
endif
if (present(data)) then
data_ = data
else
data_ = psb_comm_halo_
endif
if (present(outfmt)) then
outfmt_ = toupper(outfmt)
else
outfmt_ = 'CSR'
endif
ictxt = psb_cd_get_context(desc_a)
icomm = psb_cd_get_mpic(desc_a)
Call psb_info(ictxt, me, np)
Allocate(sdid(np,3),rvid(np,3),brvindx(np+1),&
& rvsz(np),sdsz(np),bsdindx(np+1),stat=info)
if (info /= 0) then
info=4000
call psb_errpush(info,name)
goto 9999
end if
If (debug_level >= psb_debug_outer_)&
& write(debug_unit,*) me,' ',trim(name),': Data selector',data_
select case(data_)
case(psb_comm_halo_)
idxv => desc_a%halo_index
case(psb_comm_ext_)
idxv => desc_a%ext_index
! !$ case(psb_comm_ovr_)
! !$ idxv => desc_a%ovrlap_index
! Do not accept OVRLAP_INDEX any longer.
case default
call psb_errpush(4010,name,a_err='wrong Data selector')
goto 9999
end select
l1 = 0
sdsz(:)=0
rvsz(:)=0
ipx = 1
brvindx(ipx) = 0
bsdindx(ipx) = 0
counter=1
idx = 0
idxs = 0
idxr = 0
blk%k = a%k
blk%m = 0
! For all rows in the halo descriptor, extract and send/receive.
Do
proc=idxv(counter)
if (proc == -1) exit
n_el_recv = idxv(counter+psb_n_elem_recv_)
counter = counter+n_el_recv
n_el_send = idxv(counter+psb_n_elem_send_)
tot_elem = 0
Do j=0,n_el_send-1
idx = idxv(counter+psb_elem_send_+j)
n_elem = psb_sp_get_nnz_row(idx,a)
tot_elem = tot_elem+n_elem
Enddo
sdsz(proc+1) = tot_elem
blk%m = blk%m + n_el_recv
counter = counter+n_el_send+3
Enddo
call mpi_alltoall(sdsz,1,mpi_integer,rvsz,1,mpi_integer,icomm,info)
if (info /= 0) then
info=4010
ch_err='mpi_alltoall'
call psb_errpush(info,name,a_err=ch_err)
goto 9999
end if
idxs = 0
idxr = 0
counter = 1
Do
proc=idxv(counter)
if (proc == -1) exit
n_el_recv = idxv(counter+psb_n_elem_recv_)
counter = counter+n_el_recv
n_el_send = idxv(counter+psb_n_elem_send_)
bsdindx(proc+1) = idxs
idxs = idxs + sdsz(proc+1)
brvindx(proc+1) = idxr
idxr = idxr + rvsz(proc+1)
counter = counter+n_el_send+3
Enddo
iszr=sum(rvsz)
call psb_sp_all(blk,max(iszr,1),info)
if (debug_level >= psb_debug_outer_)&
& write(debug_unit,*) me,' ',trim(name),': Sizes:',size(blk%ia1),size(blk%ia2),&
& ' Send:',sdsz(:),' Receive:',rvsz(:)
if (info /= 0) then
info=4010
ch_err='psb_sp_reall'
call psb_errpush(info,name,a_err=ch_err)
goto 9999
end if
mat_recv = iszr
iszs=sum(sdsz)
call psb_ensure_size(max(iszs,1),iasnd,info)
if (info == 0) call psb_ensure_size(max(iszs,1),jasnd,info)
if (info == 0) call psb_ensure_size(max(iszs,1),valsnd,info)
l1 = 0
ipx = 1
counter=1
idx = 0
tot_elem=0
Do
proc=idxv(counter)
if (proc == -1) exit
n_el_recv=idxv(counter+psb_n_elem_recv_)
counter=counter+n_el_recv
n_el_send=idxv(counter+psb_n_elem_send_)
Do j=0,n_el_send-1
idx = idxv(counter+psb_elem_send_+j)
n_elem = psb_sp_get_nnz_row(idx,a)
call psb_sp_getrow(idx,a,ngtz,iasnd,jasnd,valsnd,info,&
& append=.true.,nzin=tot_elem)
if (info /= 0) then
info=4010
ch_err='psb_sp_getrow'
call psb_errpush(info,name,a_err=ch_err)
goto 9999
end if
tot_elem=tot_elem+n_elem
Enddo
ipx = ipx + 1
counter = counter+n_el_send+3
Enddo
nz = tot_elem
if (rowcnv_) call psb_loc_to_glob(iasnd(1:nz),desc_a,info,iact='I')
if (colcnv_) call psb_loc_to_glob(jasnd(1:nz),desc_a,info,iact='I')
if (info /= 0) then
info=4010
ch_err='psb_loc_to_glob'
call psb_errpush(info,name,a_err=ch_err)
goto 9999
end if
call mpi_alltoallv(valsnd,sdsz,bsdindx,mpi_double_complex,&
& blk%aspk,rvsz,brvindx,mpi_double_complex,icomm,info)
call mpi_alltoallv(iasnd,sdsz,bsdindx,mpi_integer,&
& blk%ia1,rvsz,brvindx,mpi_integer,icomm,info)
call mpi_alltoallv(jasnd,sdsz,bsdindx,mpi_integer,&
& blk%ia2,rvsz,brvindx,mpi_integer,icomm,info)
if (info /= 0) then
info=4010
ch_err='mpi_alltoallv'
call psb_errpush(info,name,a_err=ch_err)
goto 9999
end if
!
! Convert into local numbering
!
if (rowcnv_) call psb_glob_to_loc(blk%ia1(1:iszr),desc_a,info,iact='I')
if (colcnv_) call psb_glob_to_loc(blk%ia2(1:iszr),desc_a,info,iact='I')
if (info /= 0) then
info=4010
ch_err='psbglob_to_loc'
call psb_errpush(info,name,a_err=ch_err)
goto 9999
end if
l1 = 0
blk%m=0
!
irmin = huge(irmin)
icmin = huge(icmin)
irmax = 0
icmax = 0
Do i=1,iszr
r=(blk%ia1(i))
k=(blk%ia2(i))
! Just in case some of the conversions were out-of-range
If ((r>0).and.(k>0)) Then
l1=l1+1
blk%aspk(l1) = blk%aspk(i)
blk%ia1(l1) = r
blk%ia2(l1) = k
irmin = min(irmin,r)
irmax = max(irmax,r)
icmin = min(icmin,k)
icmax = max(icmax,k)
End If
Enddo
if (rowscale_) then
blk%m = irmax-irmin+1
blk%ia1(1:l1) = blk%ia1(1:l1) - irmin + 1
else
blk%m = irmax
end if
if (colscale_) then
blk%k = icmax-icmin+1
blk%ia2(1:l1) = blk%ia2(1:l1) - icmin + 1
else
blk%k = icmax
end if
blk%fida = 'COO'
blk%infoa(psb_nnz_) = l1
call psb_ensure_size(1,blk%pl,info)
if (info == 0) call psb_ensure_size(1,blk%pr,info)
if (info /= 0) then
info=4010
ch_err='psb_ensure_size'
call psb_errpush(info,name,a_err=ch_err)
goto 9999
end if
blk%pl = 0
blk%pr = 0
if (debug_level >= psb_debug_outer_)&
& write(debug_unit,*) me,' ',trim(name),&
& ': End data exchange',counter,l1,blk%m
! Do we expect any duplicates to appear????
call psb_spcnv(blk,info,afmt=outfmt_,dupl=psb_dupl_add_)
if (info /= 0) then
info=4010
ch_err='psb_spcnv'
call psb_errpush(info,name,a_err=ch_err)
goto 9999
end if
Deallocate(sdid,brvindx,rvid,bsdindx,rvsz,sdsz,&
& iasnd,jasnd,valsnd,stat=info)
if (debug_level >= psb_debug_outer_)&
& 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 psb_zsphalo