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slice_test.F90
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253 lines (209 loc) · 6.86 KB
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program slice_test
implicit none
double precision, allocatable, dimension(:,:,:) :: A, B, C
double precision :: constant
character * 100 :: inputBuffer
integer :: i_size, j_size, k_size, ii, jj, kk, iter, iterT
real :: start_time, end_time
call getarg(1, inputBuffer)
read(inputBuffer,*) i_size
call getarg(2, inputBuffer)
read(inputBuffer,*) j_size
call getarg(3, inputBuffer)
read(inputBuffer,*) k_size
write(*,*) 'i_size = ', i_size
write(*,*) 'j_size = ', j_size
write(*,*) 'k_size = ', k_size
allocate(A(i_size, j_size, k_size))
allocate(B(i_size, j_size, k_size))
allocate(C(i_size, j_size, k_size))
A = 1.0
B = 2.0
C = 0.0
constant = 3.0
iterT = 1000
!$acc data copyin(A, B, C, constant)
call cpu_time(start_time)
!$acc parallel present(A,B,C,constant)
do iter = 1,iterT
C = A + constant*B
enddo
!$acc end parallel
call cpu_time(end_time)
write(*,*) 'Time with implied array computation = ', end_time - start_time
!$acc update host(C)
write(*,*) "sum(C) = ", sum(C)
call cpu_time(start_time)
!$acc parallel present(A, B, C, constant)
do iter = 1,iterT
do kk = 1,k_size
do jj = 1,j_size
do ii = 1,i_size
C(ii,jj,kk) = A(ii,jj,kk) + constant*B(ii,jj,kk)
enddo
enddo
enddo
enddo
!$acc end parallel
call cpu_time(end_time)
write(*,*) 'Time only with Parallel = ', end_time - start_time
!$acc update host(C)
write(*,*) "sum(C) = ", sum(C)
call cpu_time(start_time)
!$acc parallel present(A, B, C, constant)
do iter = 1,iterT
!$acc loop
do kk = 1,k_size
C(:,:,kk) = A(:,:,kk) + constant*B(:,:,kk)
! A(:,:,kk) = B(:,:,kk) + constant*C(:,:,kk)
! B(:,:,kk) = C(:,:,kk) + constant*A(:,:,kk)
enddo
enddo
!$acc end parallel
call cpu_time(end_time)
write(*,*) 'Time with 2 slices = ', end_time - start_time
!$acc update host(C)
write(*,*) "sum(C) = ", sum(C)
call cpu_time(start_time)
!$acc parallel present(A, B, C, constant)
do iter = 1,iterT
!$acc loop
do kk = 1,k_size
do jj = 1,j_size
C(:,jj,kk) = A(:,jj,kk) + constant*B(:,jj,kk)
! A(:,jj,kk) = B(:,jj,kk) + constant*C(:,jj,kk)
! B(:,jj,kk) = C(:,jj,kk) + constant*A(:,jj,kk)
enddo
enddo
enddo
!$acc end parallel
call cpu_time(end_time)
write(*,*) 'Time with 1 slice = ', end_time - start_time
!$acc update host(C)
write(*,*) "sum(C) = ", sum(C)
call cpu_time(start_time)
!$acc parallel present(A, B, C, constant)
do iter = 1,iterT
!$acc loop
do kk = 1,k_size
do jj = 1,j_size
do ii = 1,i_size
C(ii,jj,kk) = A(ii,jj,kk) + constant*B(ii,jj,kk)
! A(ii,jj,kk) = B(ii,jj,kk) + constant*C(ii,jj,kk)
! B(ii,jj,kk) = C(ii,jj,kk) + constant*A(ii,jj,kk)
enddo
enddo
enddo
enddo
!$acc end parallel
call cpu_time(end_time)
write(*,*) 'Time with no slices = ', end_time - start_time
!$acc update host(C)
write(*,*) "sum(C) = ", sum(C)
call cpu_time(start_time)
!$acc parallel present(A, B, C, constant)
do iter = 1,iterT
!$acc loop collapse(2)
do kk = 1,k_size
do jj = 1,j_size
C(:,jj,kk) = A(:,jj,kk) + constant*B(:,jj,kk)
! A(:,jj,kk) = B(:,jj,kk) + constant*C(:,jj,kk)
! B(:,jj,kk) = C(:,jj,kk) + constant*A(:,jj,kk)
enddo
enddo
enddo
!$acc end parallel
call cpu_time(end_time)
write(*,*) 'Time with 1 slice and collapsed looping = ', end_time - start_time
!$acc update host(C)
write(*,*) "sum(C) = ", sum(C)
call cpu_time(start_time)
!$acc parallel present(A, B, C, constant)
do iter=1,iterT
!$acc loop collapse(3)
do kk = 1,k_size
do jj = 1,j_size
do ii = 1,i_size
C(ii,jj,kk) = A(ii,jj,kk) + constant*B(ii,jj,kk)
! A(ii,jj,kk) = B(ii,jj,kk) + constant*C(ii,jj,kk)
! B(ii,jj,kk) = C(ii,jj,kk) + constant*A(ii,jj,kk)
enddo
enddo
enddo
enddo
!$acc end parallel
call cpu_time(end_time)
write(*,*) 'Time with no slices and collapsed looping = ', end_time - start_time
!$acc update host(C)
write(*,*) "sum(C) = ", sum(C)
call cpu_time(start_time)
!$acc kernels present(A,B,C)
do iter=1,iterT
do kk = 1,k_size
do jj = 1,j_size
do ii = 1,i_size
C(ii,jj,kk) = A(ii,jj,kk) + constant*B(ii,jj,kk)
! A(ii,jj,kk) = B(ii,jj,kk) + constant*C(ii,jj,kk)
! B(ii,jj,kk) = C(ii,jj,kk) + constant*A(ii,jj,kk)
enddo
enddo
enddo
enddo
!$acc end kernels
call cpu_time(end_time)
write(*,*) 'Time with kernels statement = ', end_time - start_time
!$acc update host(C)
write(*,*) "sum(C) = ", sum(C)
call cpu_time(start_time)
!$acc parallel present(A, B, C, constant)
do iter=1,iterT
!$acc loop gang collapse(2)
do kk = 1,k_size
do jj = 1,j_size
!$acc loop vector
do ii = 1,i_size
C(ii,jj,kk) = A(ii,jj,kk) + constant*B(ii,jj,kk)
! A(ii,jj,kk) = B(ii,jj,kk) + constant*C(ii,jj,kk)
! B(ii,jj,kk) = C(ii,jj,kk) + constant*A(ii,jj,kk)
enddo
enddo
enddo
enddo
!$acc end parallel
call cpu_time(end_time)
write(*,*) 'Time with gang collapse(2) and vector statements = ', end_time - start_time
!$acc update host(C)
write(*,*) "sum(C) = ", sum(C)
call cpu_time(start_time)
!$acc parallel present(A, B, C, constant)
do iter=1,iterT
!$acc loop gang
do kk = 1,k_size
!$acc loop worker
do jj = 1,j_size
!$acc loop vector
do ii = 1,i_size
C(ii,jj,kk) = A(ii,jj,kk) + constant*B(ii,jj,kk)
! A(ii,jj,kk) = B(ii,jj,kk) + constant*C(ii,jj,kk)
! B(ii,jj,kk) = C(ii,jj,kk) + constant*A(ii,jj,kk)
enddo
enddo
enddo
enddo
!$acc end parallel
call cpu_time(end_time)
write(*,*) 'Time with gang, worker, and vector statements = ', end_time - start_time
!$acc update host(C)
write(*,*) "sum(C) = ", sum(C)
call cpu_time(start_time)
do iter=1,iterT
do concurrent (ii = 1:i_size, jj = 1:j_size, kk = 1:k_size)
C(ii,jj,kk) = A(ii,jj,kk) + constant*B(ii,jj,kk)
enddo
enddo
call cpu_time(end_time)
write(*,*) 'Time with Fortran do concurrent = ', end_time - start_time
!$acc update host(c)
write(*,*) "sum(C) = ", sum(C)
!$acc end data
end program