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110 lines
4.0 KiB
Fortran
110 lines
4.0 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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! module: psb_d_nest_vect_mod
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!
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! Defines psb_d_nest_vect_type: a block-structured distributed dense
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! vector for double precision real arithmetic. Each sub-vector is a
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! standard psb_d_vect_type assembled under its own descriptor.
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!
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! Parallel BLAS operations (nrm2, dot, axpby) are exposed as module
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! subroutines/functions in psb_d_nest_psblas_mod so that they can
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! exploit a single global reduction per call.
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!
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module psb_d_nest_vect_mod
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use psb_d_vect_mod
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use psb_desc_mod
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implicit none
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type :: psb_d_nest_vect_type
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integer(psb_ipk_) :: nblocks = 0
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type(psb_d_vect_type), allocatable :: vects(:)
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contains
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procedure :: get_nblocks => psb_d_nest_vect_get_nblocks
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procedure :: zero => psb_d_nest_vect_zero
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procedure :: sizeof => psb_d_nest_vect_sizeof
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procedure :: free => psb_d_nest_vect_free
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end type psb_d_nest_vect_type
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contains
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! get_nblocks
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function psb_d_nest_vect_get_nblocks(x) result(nb)
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class(psb_d_nest_vect_type), intent(in) :: x
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integer(psb_ipk_) :: nb
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nb = x%nblocks
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end function psb_d_nest_vect_get_nblocks
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! zero: set all sub-vectors to zero (local, no halo zeroing needed)
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subroutine psb_d_nest_vect_zero(x)
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class(psb_d_nest_vect_type), intent(inout) :: x
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integer(psb_ipk_) :: i
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if (allocated(x%vects)) then
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do i = 1, x%nblocks
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call x%vects(i)%zero()
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end do
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end if
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end subroutine psb_d_nest_vect_zero
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! sizeof: total bytes across all sub-vectors
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function psb_d_nest_vect_sizeof(x) result(s)
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class(psb_d_nest_vect_type), intent(in) :: x
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integer(psb_epk_) :: s
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integer(psb_ipk_) :: i
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s = 0_psb_epk_
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if (allocated(x%vects)) then
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do i = 1, x%nblocks
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s = s + x%vects(i)%sizeof()
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end do
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end if
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end function psb_d_nest_vect_sizeof
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! free: release all sub-vectors
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subroutine psb_d_nest_vect_free(x, info)
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class(psb_d_nest_vect_type), intent(inout) :: x
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integer(psb_ipk_), intent(out) :: info
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integer(psb_ipk_) :: i, linfo
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info = 0
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if (allocated(x%vects)) then
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do i = 1, x%nblocks
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call x%vects(i)%free(linfo)
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if (linfo /= 0 .and. info == 0) info = linfo
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end do
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deallocate(x%vects, stat=linfo)
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if (linfo /= 0 .and. info == 0) info = linfo
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end if
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x%nblocks = 0
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end subroutine psb_d_nest_vect_free
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end module psb_d_nest_vect_mod
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