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cafpt2ptdriver.f90
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cafpt2ptdriver.f90
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!----------------------------------------------------------------------------!
! !
! Fortran Coarray MicroBenchmark Suite - Version 1.0 !
! !
! David Henty, EPCC; [email protected] !
! !
! Copyright 2013 the University of Edinburgh !
! !
! Licensed under the Apache License, Version 2.0 (the "License"); !
! you may not use this file except in compliance with the License. !
! You may obtain a copy of the License at !
! !
! http://www.apache.org/licenses/LICENSE-2.0 !
! !
! Unless required by applicable law or agreed to in writing, software !
! distributed under the License is distributed on an "AS IS" BASIS, !
! WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. !
! See the License for the specific language governing permissions and !
! limitations under the License. !
! !
!----------------------------------------------------------------------------!
module cafpt2ptdrivermod
use cafparams
use cafcore
use cafpt2pt
implicit none
contains
subroutine cafpt2ptdriver
logical :: docheck = p2pcheck
logical :: dosingle = p2psingle
logical :: domulti = p2pmulti
logical :: docross = p2pcross
integer :: image1, image2, tmpimage, nmax
integer :: iloop, sloop
integer :: cafsynctype, cafmodetype
nmax = p2pnmax
image1 = 0
image2 = 0
do iloop = 1, 3
if (iloop == 1 .and. dosingle) then
image1 = 1
image2 = numimages
if (thisimage == 1) then
write(*,*) '--------------------'
write(*,*) ' Single ping-pong'
write(*,*) '--------------------'
write(*,*)
end if
else if (iloop == 2 .and. domulti) then
if (numimages > 2 .and. mod(numimages,2) == 0) then
if (thisimage <= numimages/2) then
image1 = thisimage
image2 = thisimage + numimages/2
else
image2 = thisimage
image1 = thisimage - numimages/2
end if
if (thisimage == 1) then
write(*,*) '--------------------'
write(*,*) ' Multiple ping-pong'
write(*,*) '--------------------'
write(*,*)
end if
else
if (thisimage == 1) then
write(*,*) '-----------------------------------------------------'
write(*,*) ' Cannot do multiple pingpong with numimages = ', numimages
write(*,*) '-----------------------------------------------------'
end if
domulti = .false.
end if
else if (iloop == 3 .and. docross) then
if (mod(numimages, 4) == 0) then
! First pair them up as before
if (thisimage <= numimages/2) then
image1 = thisimage
image2 = thisimage + numimages/2
else
image2 = thisimage
image1 = thisimage - numimages/2
end if
! Assuming an even number of pairs we can swap all the even ones
if (mod(thisimage,2) == 0) then
tmpimage = image1
image1 = image2
image2 = tmpimage
end if
if (thisimage == 1) then
write(*,*) '-----------------------'
write(*,*) ' Crossing ping-pong'
write(*,*) '-----------------------'
end if
else
if (thisimage == 1) then
write(*,*) '-----------------------------------------------------'
write(*,*) ' Cannot do crossing pingpong with numimages = ', numimages
write(*,*) '-----------------------------------------------------'
end if
docross = .false.
end if
end if
if ( (iloop == 1 .and. dosingle) .or. &
(iloop == 2 .and. domulti ) .or. &
(iloop == 3 .and. docross )) then
do sloop = 1, 2
if (sloop == 1) cafsynctype = cafsyncall
if (sloop == 2) cafsynctype = cafsyncpt2pt
do cafmodetype = 1, maxcafmode
if (cafmodetype == cafmodempisend) cafsynctype = cafsyncnull
call cafpingpong(image1, image2, cafmodetype, cafsynctype, &
nmax, docheck)
end do
end do
end if
end do
end subroutine cafpt2ptdriver
end module cafpt2ptdrivermod