mirror of https://gitlab.com/QEF/q-e.git
98 lines
2.6 KiB
Cheetah
98 lines
2.6 KiB
Cheetah
! Implemented: i1, iv
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#if defined(__CUDA)
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#define {vname}
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PROGRAM test_mp_gather_{vname}_gpu
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!
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! Simple program to check the functionalities of mp_gather.
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!
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!
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USE cudafor
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USE parallel_include
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USE util_param, ONLY : DP
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USE mp, ONLY : mp_gather
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USE mp_world, ONLY : mp_world_start, mp_world_end, mpime, &
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root, nproc, world_comm
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USE tester
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IMPLICIT NONE
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!
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TYPE(tester_t) :: test
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INTEGER :: rnk, valid_sum, world_group = 0
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INTEGER, PARAMETER :: datasize = {datasize}
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!
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! Stuff for comparing with CPU implementation
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integer :: i
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REAL(DP) :: rnd{size}
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!
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! test variable
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{type}, DEVICE :: {vname}_d{size}
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{type}, ALLOCATABLE, DEVICE :: all_{vname}_d{allp1}
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{type} :: {vname}_h{size}
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{type}, ALLOCATABLE :: all_{vname}_h{allp1}
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{type}, ALLOCATABLE :: aux_h{allp1}
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!
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CALL test%init()
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#if defined(__MPI)
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world_group = MPI_COMM_WORLD
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#endif
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CALL mp_world_start(world_group)
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!
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! pretty ugly hack for a small test case
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#if defined(i1)
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ALLOCATE(all_{vname}_h(nproc), all_{vname}_d(nproc), aux_h(nproc))
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#else
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ALLOCATE(all_{vname}_h(datasize, nproc), all_{vname}_d(datasize, nproc))
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ALLOCATE(aux_h(datasize, nproc))
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#endif
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!
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! The sum of n ints with rank=1 is (zero based)
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! sum = (n-1)*n*0.5
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!
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! For a rank N matrix is size^N * sum
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!
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rnk = SIZE(SHAPE({vname}_h))
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valid_sum = ({datasize}**rnk) * (nproc-1)*nproc/2
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!
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{vname}_h = mpime
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{vname}_d = {vname}_h
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DO i=0, nproc-1
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!mp_gather mydata, alldata, root, gid)
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CALL mp_gather({vname}_d, all_{vname}_d, i , world_comm)
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all_{vname}_h = all_{vname}_d
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!
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IF (mpime == i) CALL test%assert_equal(SUM(all_{vname}_h) , valid_sum )
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END DO
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!
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!
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! Test against CPU implementation
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CALL save_random_seed("test_mp_gather_{vname}_gpu", mpime)
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!
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DO i = 0, nproc-1
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CALL RANDOM_NUMBER(rnd)
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{vname}_h = {typeconv} ( 10.0 * rnd )
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{vname}_d = {vname}_h
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aux_h = 0
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CALL mp_gather({vname}_d, all_{vname}_d, i , world_comm)
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CALL mp_gather({vname}_h, all_{vname}_h, i , world_comm)
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aux_h = all_{vname}_d
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CALL test%assert_{compare}( SUM(all_{vname}_h) / (nproc * 10.d0) , &
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SUM(aux_h) / (nproc * 10.d0) )
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END DO
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!
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DEALLOCATE(all_{vname}_h, all_{vname}_d)
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!
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CALL collect_results(test)
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!
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CALL mp_world_end()
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!
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IF (mpime .eq. 0) CALL test%print()
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!
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END PROGRAM test_mp_gather_{vname}_gpu
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#else
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PROGRAM test_mp_gather_{vname}_gpu
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CALL no_test()
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END PROGRAM test_mp_gather_{vname}_gpu
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#endif
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