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psb_desc_type.f90

Fixed.
psblas3-type-indexed
Salvatore Filippone 12 years ago
parent 8f69e72e1e
commit aa5273e9ad
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base/modules/psb_desc_type.f90
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!!$
!!$ Parallel Sparse BLAS version 3.0
!!$ (C) Copyright 2006, 2007, 2008, 2009, 2010, 2012
!!$ 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. 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.
!!$
!!$
!
!
! package: psb_descriptor_type
! Defines a communication descriptor
!
module psb_descriptor_type
use psb_const_mod
use psb_hash_mod
use psb_desc_const_mod
use psb_indx_map_mod
implicit none
!
! type: psb_desc_type
!
! Communication Descriptor data structure.
!
!| type psb_desc_type
!| class(psb_indx_map), allocatable :: indxmap
!| integer(psb_ipk_), allocatable :: halo_index(:), ext_index(:)
!| integer(psb_ipk_), allocatable :: bnd_elem(:)
!| integer(psb_ipk_), allocatable :: ovrlap_index(:)
!| integer(psb_ipk_), allocatable :: ovrlap_elem(:,:)
!| integer(psb_ipk_), allocatable :: ovr_mst_idx(:)
!| integer(psb_ipk_), allocatable :: lprm(:)
!| integer(psb_ipk_), allocatable :: idx_space(:)
!| type(psb_desc_type), pointer :: base_desc => null()
!| end type psb_desc_type
!
!
! This is the most important data structure: it holds all the data
! necessary to organize data exchange. The pattern of communication
! among processes depends not only on the allocation of portions of
! the index space to the various processes, but also on the underlying
! mesh discretization pattern. Thus building a communication descriptor is
! very much linked to building a sparse matrix (since the matrix sparsity
! pattern embodies the topology of the discretization graph).
!
! This is a two-level data structure: it combines an INDX_MAP with
! a set of auxiliary lists.
! For a complete description of INDX_MAP see its own file, but the
! idea here is the following: the INDX_MAP contains information about
! the index space and its allocation to the various processors.
! In particular, besides the communicator, it contains the data relevant
! to the following queries:
! 1. How many global rows/columns?
! 2. How many local rows/columns?
! 3. Convert between local and global indices
! 4. Add to local indices.
! 5. Find (one of) the owner(s) of a given index
! Checking for the existence of overlap is very expensive, thus
! it is done at build time (for extended-halo cases it can be inferred from
! the construction process).
! There are multiple ways to represent an INDX_MAP internally, hence it is
! a CLASS variable, which can take different forms, more or less memory hungry.
!
! Guidelines
!
! 1. Each global index I is owned by at least one process;
!
! 2. On each process, indices from 1 to N_ROW (desc%indxmap%get_lr())
! are locally owned; the value of N_ROW can be determined upon allocation
! based on the index distribution (see also the interface to CDALL).
!
! 3. If a global index is owned by more than one process, we have an OVERLAP
! in which case the sum of all the N_ROW values is greater than the total
! size of the index space;
!
! 4. During the buildup of the descriptor, according to the user specified
! stencil, we also take notice of indices that are not owned by the current
! process, but whose value is needed to proceed with the computation; these
! form the HALO of the current process. Halo indices are assigned local indices
! from N_ROW+1 to N_COL (inclusive).
!
! 5. The upper bound N_COL moves during the descriptor build process (see CDINS).
!
! 6. The descriptor also contains the inverse global-to-local mapping.
!
! 7. The data exchange is based on lists of local indices to be exchanged; all the
! lists have the same format, as follows:
! the list is composed of variable dimension blocks, one for each process to
! communicate with; each block contains indices of local elements to be
! exchanged. We do choose the order of communications: do not change
! the sequence of blocks unless you know what you're doing, or you'll
! risk a deadlock. NOTE: This is the format when the state is PSB_ASB_.
! See below for BLD. The end-of-list is marked with a -1.
!
!| notation stored in explanation
!| --------------- --------------------------- -----------------------------------
!| process_id index_v(p+proc_id_) identifier of process with which
!| data is exchanged.
!| n_elements_recv index_v(p+n_elem_recv_) number of elements to receive.
!| elements_recv index_v(p+elem_recv_+i) indexes of local elements to
!| receive. these are stored in the
!| array from location p+elem_recv_ to
!| location p+elem_recv_+
!| index_v(p+n_elem_recv_)-1.
!| n_elements_send index_v(p+n_elem_send_) number of elements to send.
!| elements_send index_v(p+elem_send_+i) indexes of local elements to
!| send. these are stored in the
!| array from location p+elem_send_ to
!| location p+elem_send_+
!| index_v(p+n_elem_send_)-1.
!
! This organization is valid for both halo and overlap indices; overlap entries
! need to be updated to ensure that a variable at a given global index
! (assigned to multiple processes) has the same value. The way to resolve the
! issue is to exchange the data and then sum (or average) the values. See
! psb_ovrl subroutine.
!
! 8. When the descriptor is in the BLD state the INDEX vectors contains only
! the indices to be received, organized as a sequence
! of entries of the form (proc,N,(lx1,lx2,...,lxn)) with owning process,
! number of indices (most often but not necessarily N=1), list of local indices.
! This is because we only know the list of halo indices to be received
! as we go about building the sparse matrix pattern, and we want the build
! phase to be loosely synchronized. Thus we record the indices we have to ask
! for, and at the time we call PSB_CDASB we match all the requests to figure
! out who should be sending what to whom.
! However this implies that we know who owns the indices;
! this is actually only true for the OVERLAP list
! that is filled in at CDALL time, and not for the HALO (remember: we do not
! necessarily have the space to encode the owning process index); thus
! the HALO list is rebuilt during the CDASB process
! (in the psi_ldsc_pre_halo subroutine).
!
! 9. Yet another twist comes about when building an extended descriptor with
! the psb_cdbldext subroutine. In this case we are reaching out
! layer by layer, but we may use the results in two ways:
! i. To build a descriptor with the same "owned" indices, but with an
! extended halo, with additional layers; in this case the requests
! go into halo_index;
! ii. To build a descriptor suitable for overlapped Schwarz-type computations.
! In this case we end up with more "owned" indices than in the base
! descriptor, so that what was a halo index in the base becomes an overlap
! index in the extended descriptor. In this case we build three lists:
! ovrlap_index the indices that overlap
! halo_index the halo indices (of the extended descriptor)
! ext_index the indices of elements that need to be gathered to
! map the original index space onto the new (overlapped)
! index space.
! So, ext_index has the same format as the others, but is only used in the
! context of Schwarz-type computations; otherwise it is empty (i.e.
! it only contains the end-of-list marker -1).
!
! 10. ovrlap_elem contains a list of overlap indices together with their degree
! of overlap, i.e. the number of processes "owning" the, and the "master"
! process whose value has to be considered authoritative when the need arises.
!
! 11. ovr_mst_idx is a list defining a retrieve of a copy of the values for
! overlap entries from their respecitve "master" processes by means of
! an halo exchange call. This is used for those cases where there is
! an overlap in the base data distribution.
!
! It is complex, but it does the following:
! 1. Allows a purely local matrix/stencil buildup phase, requiring only
! one synch point at the end (CDASB)
! 2. Takes shortcuts when the problem size is not too large
!
! 3. Supports restriction/prolongation operators with the same routines
! just choosing (in the swapdata/swaptran internals) on which index list
! they should work.
!
!
!
type psb_desc_type
integer(psb_ipk_), allocatable :: halo_index(:)
integer(psb_ipk_), allocatable :: ext_index(:)
integer(psb_ipk_), allocatable :: ovrlap_index(:)
integer(psb_ipk_), allocatable :: ovrlap_elem(:,:)
integer(psb_ipk_), allocatable :: ovr_mst_idx(:)
integer(psb_ipk_), allocatable :: bnd_elem(:)
class(psb_indx_map), allocatable :: indxmap
integer(psb_ipk_), allocatable :: lprm(:)
type(psb_desc_type), pointer :: base_desc => null()
integer(psb_ipk_), allocatable :: idx_space(:)
integer, allocatable :: sendtypes(:),recvtypes(:) !Extendable as a matrix of every kind of data
contains
procedure, pass(desc) :: is_ok => psb_is_ok_desc
procedure, pass(desc) :: is_valid => psb_is_valid_desc
procedure, pass(desc) :: is_upd => psb_is_upd_desc
procedure, pass(desc) :: is_bld => psb_is_bld_desc
procedure, pass(desc) :: is_asb => psb_is_asb_desc
procedure, pass(desc) :: is_ovl => psb_is_ovl_desc
procedure, pass(desc) :: is_repl => psb_is_repl_desc
procedure, pass(desc) :: get_mpic => psb_cd_get_mpic
procedure, pass(desc) :: get_dectype => psb_cd_get_dectype
procedure, pass(desc) :: get_context => psb_cd_get_context
procedure, pass(desc) :: get_local_rows => psb_cd_get_local_rows
procedure, pass(desc) :: get_local_cols => psb_cd_get_local_cols
procedure, pass(desc) :: get_global_rows => psb_cd_get_global_rows
procedure, pass(desc) :: get_global_cols => psb_cd_get_global_cols
procedure, pass(desc) :: get_list => psb_cd_get_list
procedure, pass(desc) :: sizeof => psb_cd_sizeof
procedure, pass(desc) :: free => psb_cdfree
procedure, pass(desc) :: destroy => psb_cd_destroy
procedure, pass(desc) :: nullify => nullify_desc
end type psb_desc_type
interface psb_sizeof
module procedure psb_cd_sizeof
end interface psb_sizeof
interface psb_move_alloc
module procedure psb_cdtransfer
end interface psb_move_alloc
interface psb_free
module procedure psb_cdfree
end interface psb_free
private :: nullify_desc
integer(psb_ipk_), private, save :: cd_large_threshold=psb_default_large_threshold
contains
function psb_cd_sizeof(desc) result(val)
implicit none
!....Parameters...
class(psb_desc_type), intent(in) :: desc
integer(psb_long_int_k_) :: val
val = 0
if (allocated(desc%halo_index)) val = val + psb_sizeof_int*size(desc%halo_index)
if (allocated(desc%ext_index)) val = val + psb_sizeof_int*size(desc%ext_index)
if (allocated(desc%bnd_elem)) val = val + psb_sizeof_int*size(desc%bnd_elem)
if (allocated(desc%ovrlap_index)) val = val + psb_sizeof_int*size(desc%ovrlap_index)
if (allocated(desc%ovrlap_elem)) val = val + psb_sizeof_int*size(desc%ovrlap_elem)
if (allocated(desc%ovr_mst_idx)) val = val + psb_sizeof_int*size(desc%ovr_mst_idx)
if (allocated(desc%lprm)) val = val + psb_sizeof_int*size(desc%lprm)
if (allocated(desc%idx_space)) val = val + psb_sizeof_int*size(desc%idx_space)
if (allocated(desc%indxmap)) val = val + desc%indxmap%sizeof()
end function psb_cd_sizeof
subroutine psb_cd_set_large_threshold(ith)
implicit none
integer(psb_ipk_), intent(in) :: ith
if (ith > 0) then
cd_large_threshold = ith
end if
end subroutine psb_cd_set_large_threshold
function psb_cd_get_large_threshold() result(val)
implicit none
integer(psb_ipk_) :: val
val = cd_large_threshold
end function psb_cd_get_large_threshold
logical function psb_cd_choose_large_state(ictxt,m)
use psb_penv_mod
implicit none
integer(psb_ipk_), intent(in) :: ictxt,m
!locals
integer(psb_ipk_) :: np,me
call psb_info(ictxt, me, np)
!
! Since the hashed lists take up (somewhat) more than 2*N_COL integers,
! it makes no sense to use them if you don't have at least
! 3 processes, no matter what the size of the process.
!
psb_cd_choose_large_state = &
& (m > psb_cd_get_large_threshold()) .and. &
& (np > 2)
end function psb_cd_choose_large_state
subroutine psb_nullify_desc(desc)
implicit none
type(psb_desc_type), intent(inout) :: desc
! We have nothing left to do here.
! Perhaps we should delete this subroutine?
nullify(desc%base_desc)
end subroutine psb_nullify_desc
subroutine nullify_desc(desc)
implicit none
class(psb_desc_type), intent(inout) :: desc
! We have nothing left to do here.
! Perhaps we should delete this subroutine?
nullify(desc%base_desc)
end subroutine nullify_desc
function psb_is_ok_desc(desc) result(val)
implicit none
class(psb_desc_type), intent(in) :: desc
logical :: val
val = .false.
if (allocated(desc%indxmap)) &
& val = desc%indxmap%is_valid()
end function psb_is_ok_desc
function psb_is_valid_desc(desc) result(val)
implicit none
class(psb_desc_type), intent(in) :: desc
logical :: val
val = .false.
if (allocated(desc%indxmap)) &
& val = desc%indxmap%is_valid()
end function psb_is_valid_desc
function psb_is_bld_desc(desc) result(val)
implicit none
class(psb_desc_type), intent(in) :: desc
logical :: val
val = .false.
if (allocated(desc%indxmap)) &
& val = desc%indxmap%is_bld()
end function psb_is_bld_desc
function psb_is_upd_desc(desc) result(val)
implicit none
class(psb_desc_type), intent(in) :: desc
logical :: val
val = .false.
if (allocated(desc%indxmap)) &
& val = desc%indxmap%is_upd()
end function psb_is_upd_desc
function psb_is_repl_desc(desc) result(val)
implicit none
class(psb_desc_type), intent(in) :: desc
logical :: val
val = .false.
if (allocated(desc%indxmap)) &
& val = desc%indxmap%is_repl()
end function psb_is_repl_desc
function psb_is_ovl_desc(desc) result(val)
implicit none
class(psb_desc_type), intent(in) :: desc
logical :: val
val = .false.
if (allocated(desc%indxmap)) &
& val = desc%indxmap%is_ovl()
end function psb_is_ovl_desc
function psb_is_asb_desc(desc) result(val)
implicit none
class(psb_desc_type), intent(in) :: desc
logical :: val
val = .false.
if (allocated(desc%indxmap)) &
& val = desc%indxmap%is_asb()
end function psb_is_asb_desc
function psb_cd_get_local_rows(desc) result(val)
implicit none
integer(psb_ipk_) :: val
class(psb_desc_type), intent(in) :: desc
if (psb_is_ok_desc(desc)) then
val = desc%indxmap%get_lr()
else
val = -1
endif
end function psb_cd_get_local_rows
function psb_cd_get_local_cols(desc) result(val)
implicit none
integer(psb_ipk_) :: val
class(psb_desc_type), intent(in) :: desc
if (psb_is_ok_desc(desc)) then
val = desc%indxmap%get_lc()
else
val = -1
endif
end function psb_cd_get_local_cols
function psb_cd_get_global_rows(desc) result(val)
implicit none
integer(psb_ipk_) :: val
class(psb_desc_type), intent(in) :: desc
if (psb_is_ok_desc(desc)) then
val = desc%indxmap%get_gr()
else
val = -1
endif
end function psb_cd_get_global_rows
function psb_cd_get_global_cols(desc) result(val)
implicit none
integer(psb_ipk_) :: val
class(psb_desc_type), intent(in) :: desc
if (psb_is_ok_desc(desc)) then
val = desc%indxmap%get_gc()
else
val = -1
endif
end function psb_cd_get_global_cols
function psb_cd_get_context(desc) result(val)
use psb_error_mod
implicit none
integer(psb_ipk_) :: val
class(psb_desc_type), intent(in) :: desc
if (allocated(desc%indxmap)) then
val = desc%indxmap%get_ctxt()
else
val = -1
call psb_errpush(psb_err_invalid_cd_state_,'psb_cd_get_context')
call psb_error()
end if
end function psb_cd_get_context
function psb_cd_get_dectype(desc) result(val)
use psb_error_mod
implicit none
integer(psb_ipk_) :: val
class(psb_desc_type), intent(in) :: desc
if (allocated(desc%indxmap)) then
val = desc%indxmap%get_state()
else
val = -1
call psb_errpush(psb_err_invalid_cd_state_,'psb_cd_get_dectype')
call psb_error()
end if
end function psb_cd_get_dectype
function psb_cd_get_mpic(desc) result(val)
use psb_error_mod
implicit none
integer(psb_ipk_) :: val
class(psb_desc_type), intent(in) :: desc
if (allocated(desc%indxmap)) then
val = desc%indxmap%get_mpic()
else
val = -1
call psb_errpush(psb_err_invalid_cd_state_,'psb_cd_get_mpic')
call psb_error()
end if
end function psb_cd_get_mpic
subroutine psb_cd_set_ovl_asb(desc,info)
!
! Change state of a descriptor into ovl_build.
implicit none
type(psb_desc_type), intent(inout) :: desc
integer(psb_ipk_) :: info
info = 0
if (psb_is_asb_desc(desc)) &
& call desc%indxmap%set_state(psb_desc_ovl_asb_)
end subroutine psb_cd_set_ovl_asb
subroutine psb_get_xch_idx(idx,totxch,totsnd,totrcv)
implicit none
integer(psb_ipk_), intent(in) :: idx(:)
integer(psb_ipk_), intent(out) :: totxch,totsnd,totrcv
integer(psb_ipk_) :: ip, nerv, nesd
character(len=20), parameter :: name='psb_get_xch_idx'
totxch = 0
totsnd = 0
totrcv = 0
ip = 1
do
if (ip > size(idx)) then
write(psb_err_unit,*) trim(name),': Warning: out of size of input vector '
exit
end if
if (idx(ip) == -1) exit
totxch = totxch+1
nerv = idx(ip+psb_n_elem_recv_)
nesd = idx(ip+nerv+psb_n_elem_send_)
totsnd = totsnd + nesd
totrcv = totrcv + nerv
ip = ip+nerv+nesd+3
end do
end subroutine psb_get_xch_idx
subroutine psb_cd_get_list(data,desc,ipnt,totxch,idxr,idxs,info)
use psb_const_mod
use psb_error_mod
use psb_penv_mod
implicit none
integer(psb_ipk_), intent(in) :: data
integer(psb_ipk_), pointer :: ipnt(:)
class(psb_desc_type), target :: desc
integer(psb_ipk_), intent(out) :: totxch,idxr,idxs,info
!locals
integer(psb_ipk_) :: np,me,ictxt,err_act, debug_level,debug_unit
logical, parameter :: debug=.false.,debugprt=.false.
character(len=20), parameter :: name='psb_cd_get_list'
info = psb_success_
call psb_erractionsave(err_act)
debug_unit = psb_get_debug_unit()
debug_level = psb_get_debug_level()
ictxt = psb_cd_get_context(desc)
call psb_info(ictxt, me, np)
select case(data)
case(psb_comm_halo_)
ipnt => desc%halo_index
case(psb_comm_ovr_)
ipnt => desc%ovrlap_index
case(psb_comm_ext_)
ipnt => desc%ext_index
if (debug_level >= psb_debug_ext_) then
if (.not.associated(desc%base_desc)) then
write(debug_unit,*) trim(name),&
& ': Warning: trying to get ext_index on a descriptor ',&
& 'which does not have a base_desc!'
end if
if (.not.psb_is_ovl_desc(desc)) then
write(debug_unit,*) trim(name),&
& ': Warning: trying to get ext_index on a descriptor ',&
& 'which is not overlap-extended!'
end if
end if
case(psb_comm_mov_)
ipnt => desc%ovr_mst_idx
case default
info=psb_err_from_subroutine_
call psb_errpush(info,name,a_err='wrong Data selector')
goto 9999
end select
call psb_get_xch_idx(ipnt,totxch,idxs,idxr)
call psb_erractionrestore(err_act)
return
9999 continue
call psb_erractionrestore(err_act)
if (err_act == psb_act_ret_) then
return
else
call psb_error(ictxt)
end if
return
end subroutine psb_cd_get_list
!
! Subroutine: psb_cdfree
! Frees a descriptor data structure.
!
! Arguments:
! desc_a - type(psb_desc_type). The communication descriptor to be freed.
! info - integer. return code.
subroutine psb_cdfree(desc,info)
!...free descriptor structure...
use psb_const_mod
use psb_error_mod
use psb_penv_mod
implicit none
!....parameters...
class(psb_desc_type), intent(inout) :: desc
integer(psb_ipk_), intent(out) :: info
!...locals....
integer(psb_ipk_) :: ictxt,np,me, err_act
character(len=20) :: name
info=psb_success_
call psb_erractionsave(err_act)
name = 'psb_cdfree'
call desc%destroy()
call psb_erractionrestore(err_act)
return
9999 continue
call psb_erractionrestore(err_act)
if (err_act == psb_act_ret_) then
return
else
if (ictxt == -1) then
call psb_error()
else
call psb_error(ictxt)
end if
end if
return
end subroutine psb_cdfree
!
! Subroutine: psb_cdfree
! Frees a descriptor data structure.
!
! Arguments:
! desc_a - type(psb_desc_type). The communication descriptor to be freed.
subroutine psb_cd_destroy(desc)
!...free descriptor structure...
use psb_const_mod
use psb_error_mod
use psb_penv_mod
implicit none
!....parameters...
class(psb_desc_type), intent(inout) :: desc
!...locals....
integer(psb_ipk_) :: info
if (allocated(desc%halo_index)) &
& deallocate(desc%halo_index,stat=info)
if (allocated(desc%bnd_elem)) &
& deallocate(desc%bnd_elem,stat=info)
if (allocated(desc%ovrlap_index)) &
& deallocate(desc%ovrlap_index,stat=info)
if (allocated(desc%ovrlap_elem)) &
& deallocate(desc%ovrlap_elem,stat=info)
if (allocated(desc%ovr_mst_idx)) &
& deallocate(desc%ovr_mst_idx,stat=info)
if (allocated(desc%lprm)) &
& deallocate(desc%lprm,stat=info)
if (allocated(desc%idx_space)) &
& deallocate(desc%idx_space,stat=info)
if (allocated(desc%indxmap)) then
call desc%indxmap%free()
deallocate(desc%indxmap, stat=info)
end if
call desc%nullify()
return
end subroutine psb_cd_destroy
!
! Subroutine: psb_cdtransfer
! Transfers data and allocation from in to out; behaves like MOVE_ALLOC, i.e.
! the IN arg is empty (and deallocated) upon exit.
!
!
! Arguments:
! desc_in - type(psb_desc_type). The communication descriptor to be
! transferred.
! desc_out - type(psb_desc_type). The output communication descriptor.
! info - integer. Return code.
subroutine psb_cdtransfer(desc_in, desc_out, info)
use psb_realloc_mod
use psb_const_mod
use psb_error_mod
use psb_penv_mod
implicit none
!....parameters...
type(psb_desc_type), intent(inout) :: desc_in
type(psb_desc_type), intent(inout) :: desc_out
integer(psb_ipk_), intent(out) :: info
!locals
integer(psb_ipk_) :: np,me,ictxt, err_act
integer(psb_ipk_) :: debug_level, debug_unit
character(len=20) :: name
if (psb_get_errstatus() /= 0) return
info = psb_success_
call psb_erractionsave(err_act)
name = 'psb_cdtransfer'
debug_unit = psb_get_debug_unit()
debug_level = psb_get_debug_level()
!
! Note: this might be called even
! when desc_in is empty.
!
if (desc_in%is_valid()) then
ictxt = psb_cd_get_context(desc_in)
call psb_info(ictxt,me,np)
if (info == psb_success_) &
& call psb_move_alloc( desc_in%halo_index , desc_out%halo_index , info)
if (info == psb_success_) &
& call psb_move_alloc( desc_in%bnd_elem , desc_out%bnd_elem , info)
if (info == psb_success_) &
& call psb_move_alloc( desc_in%ovrlap_elem , desc_out%ovrlap_elem , info)
if (info == psb_success_) &
& call psb_move_alloc( desc_in%ovrlap_index, desc_out%ovrlap_index , info)
if (info == psb_success_) &
& call psb_move_alloc( desc_in%ovr_mst_idx , desc_out%ovr_mst_idx , info)
if (info == psb_success_) &
& call psb_move_alloc( desc_in%ext_index , desc_out%ext_index , info)
if (info == psb_success_) &
& call psb_move_alloc( desc_in%lprm , desc_out%lprm , info)
if (info == psb_success_) &
& call psb_move_alloc( desc_in%idx_space , desc_out%idx_space , info)
if (info == psb_success_) &
& call move_alloc(desc_in%indxmap, desc_out%indxmap)
if (info /= psb_success_) then
info = psb_err_from_subroutine_
call psb_errpush(info,name)
goto 9999
endif
if (debug_level >= psb_debug_ext_) &
& write(debug_unit,*) me,' ',trim(name),': end'
else
call desc_out%free(info)
end if
call desc_in%free(info)
call psb_erractionrestore(err_act)
return
9999 continue
call psb_erractionrestore(err_act)
if (err_act == psb_act_ret_) then
return
else
call psb_error()
end if
return
end subroutine psb_cdtransfer
Subroutine psb_cd_get_recv_idx(tmp,desc,data,info,toglob)
use psb_error_mod
use psb_penv_mod
use psb_realloc_mod
Implicit None
integer(psb_ipk_), allocatable, intent(out) :: tmp(:)
integer(psb_ipk_), intent(in) :: data
Type(psb_desc_type), Intent(in), target :: desc
integer(psb_ipk_), intent(out) :: info
logical, intent(in) :: toglob
! .. Local Scalars ..
integer(psb_ipk_) :: incnt, outcnt, j, np, me, ictxt, l_tmp,&
& idx, gidx, proc, n_elem_send, n_elem_recv
integer(psb_ipk_), pointer :: idxlist(:)
integer(psb_ipk_) :: debug_level, debug_unit, err_act
character(len=20) :: name
name = 'psb_cd_get_recv_idx'
info = psb_success_
call psb_erractionsave(err_act)
debug_unit = psb_get_debug_unit()
debug_level = psb_get_debug_level()
ictxt = psb_cd_get_context(desc)
call psb_info(ictxt, me, np)
select case(data)
case(psb_comm_halo_)
idxlist => desc%halo_index
case(psb_comm_ovr_)
idxlist => desc%ovrlap_index
case(psb_comm_ext_)
idxlist => desc%ext_index
case(psb_comm_mov_)
idxlist => desc%ovr_mst_idx
write(psb_err_unit,*) 'Warning: unusual request getidx on ovr_mst_idx'
case default
info=psb_err_from_subroutine_
call psb_errpush(info,name,a_err='wrong Data selector')
goto 9999
end select
l_tmp = 3*size(idxlist)
allocate(tmp(l_tmp),stat=info)
if (info /= psb_success_) then
info = psb_err_from_subroutine_
call psb_errpush(psb_err_from_subroutine_,name,a_err='Allocate')
goto 9999
end if
incnt = 1
outcnt = 1
tmp(:) = -1
Do While (idxlist(incnt) /= -1)
proc = idxlist(incnt+psb_proc_id_)
n_elem_recv = idxlist(incnt+psb_n_elem_recv_)
n_elem_send = idxlist(incnt+n_elem_recv+psb_n_elem_send_)
Do j=0,n_elem_recv-1
idx = idxlist(incnt+psb_elem_recv_+j)
call psb_ensure_size((outcnt+3),tmp,info,pad=-ione)
if (info /= psb_success_) then
info=psb_err_from_subroutine_
call psb_errpush(info,name,a_err='psb_ensure_size')
goto 9999
end if
if (toglob) then
call desc%indxmap%l2g(idx,gidx,info)
If (gidx < 0) then
info=-3
call psb_errpush(info,name)
goto 9999
endif
tmp(outcnt) = proc
tmp(outcnt+1) = 1
tmp(outcnt+2) = gidx
tmp(outcnt+3) = -1
else
tmp(outcnt) = proc
tmp(outcnt+1) = 1
tmp(outcnt+2) = idx
tmp(outcnt+3) = -1
end if
outcnt = outcnt+3
end Do
incnt = incnt+n_elem_recv+n_elem_send+3
end Do
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_cd_get_recv_idx
end module psb_descriptor_type
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