FrontISTR 5.2.0
Large-scale structural analysis program with finit element method
Loading...
Searching...
No Matches
hecmw_solver_SR_22.F90
Go to the documentation of this file.
1!-------------------------------------------------------------------------------
2! Copyright (c) 2019 FrontISTR Commons
3! This software is released under the MIT License, see LICENSE.txt
4!-------------------------------------------------------------------------------
5
6!C
7!C***
8!C*** module hecmw_solver_SR_22
9!C***
10!C
12contains
13 !C
14 !C*** SOLVER_SEND_RECV
15 !C
17 & ( n, neibpetot, neibpe, stack_import, nod_import, &
18 & stack_export, nod_export, &
19 & ws, wr, x, solver_comm,my_rank)
20
21 use hecmw_util
22 implicit real*8 (a-h,o-z)
23 ! include 'mpif.h'
24 ! include 'hecmw_config_f.h'
25
26 integer(kind=kint ) , intent(in) :: N
27 integer(kind=kint ) , intent(in) :: NEIBPETOT
28 integer(kind=kint ), pointer :: NEIBPE (:)
29 integer(kind=kint ), pointer :: STACK_IMPORT(:)
30 integer(kind=kint ), pointer :: NOD_IMPORT (:)
31 integer(kind=kint ), pointer :: STACK_EXPORT(:)
32 integer(kind=kint ), pointer :: NOD_EXPORT (:)
33 real (kind=kreal), dimension(: ), intent(inout):: ws
34 real (kind=kreal), dimension(: ), intent(inout):: wr
35 real (kind=kreal), dimension(: ), intent(inout):: x
36 integer(kind=kint ) , intent(in) ::SOLVER_COMM
37 integer(kind=kint ) , intent(in) :: my_rank
38
39#ifndef HECMW_SERIAL
40 integer(kind=kint ), dimension(:,:), allocatable :: sta1
41 integer(kind=kint ), dimension(:,:), allocatable :: sta2
42 integer(kind=kint ), dimension(: ), allocatable :: req1
43 integer(kind=kint ), dimension(: ), allocatable :: req2
44
45 integer(kind=kint ), save :: NFLAG
46 data nflag/0/
47
48 ! local valiables
49 integer(kind=kint ) :: neib,istart,inum,k,ii,ierr,nreq1,nreq2
50 !C
51 !C-- INIT.
52 allocate (sta1(mpi_status_size,neibpetot))
53 allocate (sta2(mpi_status_size,neibpetot))
54 allocate (req1(neibpetot))
55 allocate (req2(neibpetot))
56
57 !C
58 !C-- SEND
59 nreq1=0
60 do neib= 1, neibpetot
61 istart= stack_export(neib-1)
62 inum = stack_export(neib ) - istart
63 if (inum==0) cycle
64 nreq1=nreq1+1
65 do k= istart+1, istart+inum
66 ii = 2*nod_export(k)
67 ws(2*k-1)= x(ii-1)
68 ws(2*k )= x(ii )
69 enddo
70
71 call mpi_isend (ws(2*istart+1), 2*inum,mpi_double_precision, &
72 & neibpe(neib), 0, solver_comm, req1(nreq1), ierr)
73 enddo
74
75 !C
76 !C-- RECEIVE
77 nreq2=0
78 do neib= 1, neibpetot
79 istart= stack_import(neib-1)
80 inum = stack_import(neib ) - istart
81 if (inum==0) cycle
82 nreq2=nreq2+1
83 call mpi_irecv (wr(2*istart+1), 2*inum, mpi_double_precision, &
84 & neibpe(neib), 0, solver_comm, req2(nreq2), ierr)
85 enddo
86
87 call mpi_waitall (nreq2, req2, sta2, ierr)
88
89 do neib= 1, neibpetot
90 istart= stack_import(neib-1)
91 inum = stack_import(neib ) - istart
92 do k= istart+1, istart+inum
93 ii = 2*nod_import(k)
94 x(ii-1)= wr(2*k-1)
95 x(ii )= wr(2*k )
96 enddo
97 enddo
98
99 call mpi_waitall (nreq1, req1, sta1, ierr)
100 deallocate (sta1, sta2, req1, req2)
101#endif
102 end subroutine hecmw_solve_send_recv_22
103end module hecmw_solver_sr_22
subroutine hecmw_solve_send_recv_22(n, neibpetot, neibpe, stack_import, nod_import, stack_export, nod_export, ws, wr, x, solver_comm, my_rank)
I/O and Utility.
Definition: hecmw_util_f.F90:7
integer(kind=4), parameter kreal