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344 lines
11 KiB
Fortran
344 lines
11 KiB
Fortran
!
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! Parallel Sparse BLAS version 3.5
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! (C) Copyright 2006-2018
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! Salvatore Filippone
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! Alfredo Buttari
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!
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! Redistribution and use in source and binary forms, with or without
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! modification, are permitted provided that the following conditions
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! are met:
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! 1. Redistributions of source code must retain the above copyright
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! notice, this list of conditions and the following disclaimer.
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! 2. Redistributions in binary form must reproduce the above copyright
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! notice, this list of conditions, and the following disclaimer in the
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! documentation and/or other materials provided with the distribution.
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! 3. The name of the PSBLAS group or the names of its contributors may
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! not be used to endorse or promote products derived from this
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! software without specific written permission.
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!
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! THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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! ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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! TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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! PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PSBLAS GROUP OR ITS CONTRIBUTORS
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! BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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! CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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! SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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! INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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! CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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! ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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! POSSIBILITY OF SUCH DAMAGE.
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!
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!
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! File: psb_zhalo.f90
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!
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! Subroutine: psb_zhalo_vect
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! This subroutine performs the exchange of the halo elements in a
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! distributed vector between all the processes.
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!
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! Arguments:
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! x - type(psb_z_vect_type) The local part of the vector
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! desc_a - type(psb_desc_type). The communication descriptor.
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! info - integer. Return code
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! jx - integer(optional). The starting column of the global matrix.
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! ik - integer(optional). The number of columns to gather.
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! work - complex(optional). Work area.
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! tran - character(optional). Transpose exchange.
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! mode - integer(optional). Communication mode (see Swapdata)
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! data - integer Which index list in desc_a should be used
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! to retrieve rows, default psb_comm_halo_
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! psb_comm_halo_ use halo_index
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! psb_comm_ext_ use ext_index
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! psb_comm_ovrl_ use ovrl_index
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! psb_comm_mov_ use ovr_mst_idx
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!
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!
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subroutine psb_zhalo_vect(x,desc_a,info,work,tran,mode,data)
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use psb_base_mod, psb_protect_name => psb_zhalo_vect
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use psi_mod
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implicit none
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type(psb_z_vect_type), intent(inout) :: x
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type(psb_desc_type), intent(in) :: desc_a
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integer(psb_ipk_), intent(out) :: info
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complex(psb_dpk_), target, optional, intent(inout) :: work(:)
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integer(psb_ipk_), intent(in), optional :: mode,data
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character, intent(in), optional :: tran
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! locals
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type(psb_ctxt_type) :: ctxt
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integer(psb_ipk_) :: np, me, err_act, iix, jjx, &
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& nrow, ncol, lldx, imode, liwork,data_
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integer(psb_lpk_) :: m, n, ix, ijx
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complex(psb_dpk_),pointer :: iwork(:)
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character :: tran_
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character(len=20) :: name, ch_err
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logical :: aliw
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name='psb_zhalov'
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info=psb_success_
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call psb_erractionsave(err_act)
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if (psb_errstatus_fatal()) then
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info = psb_err_internal_error_ ; goto 9999
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end if
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ctxt=desc_a%get_context()
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! check on blacs grid
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call psb_info(ctxt, me, np)
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if (np == -1) then
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info = psb_err_context_error_
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call psb_errpush(info,name)
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goto 9999
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endif
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if (.not.allocated(x%v)) then
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info = psb_err_invalid_vect_state_
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call psb_errpush(info,name)
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goto 9999
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endif
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ix = 1
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m = desc_a%get_global_rows()
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n = desc_a%get_global_cols()
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nrow = desc_a%get_local_rows()
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ncol = desc_a%get_local_cols()
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lldx = x%get_nrows()
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if (present(tran)) then
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tran_ = psb_toupper(tran)
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else
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tran_ = 'N'
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endif
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if (present(data)) then
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data_ = data
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else
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data_ = psb_comm_halo_
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endif
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if (present(mode)) then
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imode = mode
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else
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imode = IOR(psb_swap_send_,psb_swap_recv_)
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endif
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if ((info == 0).and.(lldx<ncol)) call x%reall(ncol,info)
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if(info /= psb_success_) then
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info=psb_err_from_subroutine_ ; ch_err='reall'
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call psb_errpush(info,name,a_err=ch_err)
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goto 9999
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end if
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liwork=nrow
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if (present(work)) then
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if(size(work) >= liwork) then
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iwork => work
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aliw=.false.
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else
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aliw=.true.
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allocate(iwork(liwork),stat=info)
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if(info /= psb_success_) then
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info=psb_err_from_subroutine_
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ch_err='psb_realloc'
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call psb_errpush(info,name,a_err=ch_err)
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goto 9999
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end if
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end if
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else
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aliw=.true.
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allocate(iwork(liwork),stat=info)
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if(info /= psb_success_) then
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info=psb_err_from_subroutine_
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ch_err='psb_realloc'
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call psb_errpush(info,name,a_err=ch_err)
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goto 9999
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end if
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end if
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! exchange halo elements
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if(tran_ == 'N') then
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call psi_swapdata(imode,zzero,x%v,&
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& desc_a,iwork,info,data=data_)
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else if((tran_ == 'T').or.(tran_ == 'C')) then
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call psi_swaptran(imode,zone,x%v,&
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& desc_a,iwork,info)
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else
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info = psb_err_internal_error_
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call psb_errpush(info,name,a_err='invalid tran')
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goto 9999
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end if
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if (info /= psb_success_) then
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ch_err='PSI_swapdata'
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call psb_errpush(psb_err_from_subroutine_,name,a_err=ch_err)
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goto 9999
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end if
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if (aliw) deallocate(iwork)
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nullify(iwork)
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call psb_erractionrestore(err_act)
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return
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9999 call psb_error_handler(ctxt,err_act)
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return
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end subroutine psb_zhalo_vect
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!
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! Subroutine: psb_zhalo_multivect
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! This subroutine performs the exchange of the halo elements in a
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! distributed multivector between all the processes.
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!
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! Arguments:
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! x - type(psb_z_multivect_type) The local part of the multivector
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! desc_a - type(psb_desc_type). The communication descriptor.
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! info - integer. Return code
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! jx - integer(optional). The starting column of the global matrix.
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! ik - integer(optional). The number of columns to gather.
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! work - complex(optional). Work area.
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! tran - character(optional). Transpose exchange.
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! mode - integer(optional). Communication mode (see Swapdata)
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! data - integer Which index list in desc_a should be used
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! to retrieve rows, default psb_comm_halo_
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! psb_comm_halo_ use halo_index
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! psb_comm_ext_ use ext_index
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! psb_comm_ovrl_ use ovrl_index
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! psb_comm_mov_ use ovr_mst_idx
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!
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!
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subroutine psb_zhalo_multivect(x,desc_a,info,work,tran,mode,data)
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use psb_base_mod, psb_protect_name => psb_zhalo_multivect
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use psi_mod
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implicit none
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type(psb_z_multivect_type), intent(inout) :: x
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type(psb_desc_type), intent(in) :: desc_a
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integer(psb_ipk_), intent(out) :: info
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complex(psb_dpk_), target, optional, intent(inout) :: work(:)
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integer(psb_ipk_), intent(in), optional :: mode,data
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character, intent(in), optional :: tran
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! locals
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type(psb_ctxt_type) :: ctxt
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integer(psb_ipk_) :: np, me, err_act, iix, jjx, &
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& nrow, ncol, lldx, imode, liwork,data_
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integer(psb_lpk_) :: m, n, ix, ijx
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complex(psb_dpk_),pointer :: iwork(:)
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character :: tran_
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character(len=20) :: name, ch_err
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logical :: aliw
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name='psb_zhalov'
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info=psb_success_
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call psb_erractionsave(err_act)
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if (psb_errstatus_fatal()) then
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info = psb_err_internal_error_ ; goto 9999
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end if
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ctxt=desc_a%get_context()
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! check on blacs grid
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call psb_info(ctxt, me, np)
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if (np == -1) then
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info = psb_err_context_error_
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call psb_errpush(info,name)
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goto 9999
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endif
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if (.not.allocated(x%v)) then
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info = psb_err_invalid_vect_state_
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call psb_errpush(info,name)
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goto 9999
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endif
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ix = 1
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ijx = 1
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m = desc_a%get_global_rows()
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n = desc_a%get_global_cols()
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nrow = desc_a%get_local_rows()
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ncol = desc_a%get_local_cols()
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lldx = x%get_nrows()
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if (present(tran)) then
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tran_ = psb_toupper(tran)
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else
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tran_ = 'N'
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endif
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if (present(data)) then
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data_ = data
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else
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data_ = psb_comm_halo_
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endif
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if (present(mode)) then
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imode = mode
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else
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imode = IOR(psb_swap_send_,psb_swap_recv_)
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endif
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if (lldx < ncol) call x%reall(ncol,x%get_ncols(),info)
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if(info /= psb_success_) then
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info=psb_err_from_subroutine_; ch_err='psb_reall'
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call psb_errpush(info,name,a_err=ch_err)
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goto 9999
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end if
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liwork=nrow
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if (present(work)) then
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if(size(work) >= liwork) then
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iwork => work
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aliw=.false.
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else
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aliw=.true.
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allocate(iwork(liwork),stat=info)
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if(info /= psb_success_) then
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info=psb_err_from_subroutine_
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ch_err='psb_realloc'
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call psb_errpush(info,name,a_err=ch_err)
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goto 9999
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end if
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end if
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else
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aliw=.true.
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allocate(iwork(liwork),stat=info)
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if(info /= psb_success_) then
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info=psb_err_from_subroutine_
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ch_err='psb_realloc'
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call psb_errpush(info,name,a_err=ch_err)
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goto 9999
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end if
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end if
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! exchange halo elements
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if(tran_ == 'N') then
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call psi_swapdata(imode,zzero,x%v,&
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& desc_a,iwork,info,data=data_)
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else if((tran_ == 'T').or.(tran_ == 'C')) then
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call psi_swaptran(imode,zone,x%v,&
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& desc_a,iwork,info)
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else
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info = psb_err_internal_error_
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call psb_errpush(info,name,a_err='invalid tran')
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goto 9999
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end if
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if (info /= psb_success_) then
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ch_err='PSI_swapdata'
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call psb_errpush(psb_err_from_subroutine_,name,a_err=ch_err)
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goto 9999
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end if
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if (aliw) deallocate(iwork)
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nullify(iwork)
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call psb_erractionrestore(err_act)
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return
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9999 call psb_error_handler(ctxt,err_act)
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return
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end subroutine psb_zhalo_multivect
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