You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
57 lines
1.4 KiB
Fortran
57 lines
1.4 KiB
Fortran
module comminfo
|
|
contains
|
|
|
|
|
|
subroutine get_comminfo(icontxt,desc_a,comm_info)
|
|
use typedesc
|
|
implicit none
|
|
|
|
type(desc_type) :: desc_a
|
|
integer,pointer:: comm_info(:,:)
|
|
integer :: icontxt, nprow, npcol, myprow, mypcol,&
|
|
& i,cnt,proc,n_elem_recv,n_elem_send
|
|
integer,pointer:: sndbuf(:)
|
|
|
|
|
|
|
|
call blacs_gridinfo(icontxt, nprow, npcol, myprow, mypcol)
|
|
|
|
! write(0,*)'inside comminfo',nprow,npcol,myprow,mypcol
|
|
allocate(sndbuf(nprow))
|
|
sndbuf(:)=0
|
|
cnt=1
|
|
|
|
do while(desc_a%halo_index(cnt).ne.-1)
|
|
proc=desc_a%halo_index(cnt+proc_id_)
|
|
n_elem_recv=desc_a%halo_index(cnt+n_elem_recv_)
|
|
n_elem_send=desc_a%halo_index(cnt+n_elem_recv+n_elem_send_)
|
|
cnt=cnt+n_elem_recv+n_elem_send+3
|
|
sndbuf(proc+1)=n_elem_send
|
|
end do
|
|
|
|
|
|
if(myprow.eq.0) then
|
|
comm_info(1,:)=sndbuf(:)
|
|
deallocate(sndbuf)
|
|
do i=1,nprow-1
|
|
sndbuf=>comm_info(i+1,:)
|
|
! call igerv2d( icontxt, 1, nprow, comm_info(i+1,:), nprow, i, 0)
|
|
call igerv2d( icontxt, nprow,1, sndbuf, nprow, i, 0 )
|
|
! write(0,'("Root has received from process n.",i3)'),i
|
|
! write(0,*) comm_info(i+1,:)
|
|
! write(0,*) sndbuf
|
|
end do
|
|
|
|
else
|
|
|
|
! write(0,'("Process n.",i3," is sending to root")'),myprow
|
|
! write(0,*) sndbuf
|
|
call igesd2d( icontxt, nprow,1, sndbuf, nprow, 0, 0 )
|
|
|
|
end if
|
|
|
|
end subroutine get_comminfo
|
|
|
|
|
|
end module comminfo
|