v2: correct kernel to be suitable for simd_width both 8 and 16 Signed-off-by: Guo Yejun <yejun....@intel.com> --- kernels/compiler_sub_group_shuffle.cl | 18 ++++++++++++++ utests/compiler_sub_group_shuffle.cpp | 45 +++++++++++++++++++++++++++++++++++ 2 files changed, 63 insertions(+) create mode 100644 kernels/compiler_sub_group_shuffle.cl create mode 100644 utests/compiler_sub_group_shuffle.cpp
diff --git a/kernels/compiler_sub_group_shuffle.cl b/kernels/compiler_sub_group_shuffle.cl new file mode 100644 index 0000000..75adde3 --- /dev/null +++ b/kernels/compiler_sub_group_shuffle.cl @@ -0,0 +1,18 @@ +__kernel void compiler_sub_group_shuffle(global int *dst, int c) +{ + int i = get_global_id(0); + if (i == 0) + dst[0] = get_sub_group_size(); + dst++; + + int from = i; + int j = get_sub_group_size() - get_sub_group_id() - 1; + int o0 = get_sub_group_id(); + int o1 = intel_sub_group_shuffle(from, c); + int o2 = intel_sub_group_shuffle(from, 5); + int o3 = intel_sub_group_shuffle(from, j); + dst[i*4] = o0; + dst[i*4+1] = o1; + dst[i*4+2] = o2; + dst[i*4+3] = o3; +} diff --git a/utests/compiler_sub_group_shuffle.cpp b/utests/compiler_sub_group_shuffle.cpp new file mode 100644 index 0000000..4ba8b99 --- /dev/null +++ b/utests/compiler_sub_group_shuffle.cpp @@ -0,0 +1,45 @@ +#include "utest_helper.hpp" + +void compiler_sub_group_shuffle(void) +{ + const size_t n = 32; + const int32_t buf_size = 4 * n + 1; + + // Setup kernel and buffers + OCL_CREATE_KERNEL("compiler_sub_group_shuffle"); + OCL_CREATE_BUFFER(buf[0], 0, buf_size * sizeof(int), NULL); + OCL_SET_ARG(0, sizeof(cl_mem), &buf[0]); + + int c = 3; + OCL_SET_ARG(1, sizeof(int), &c); + + globals[0] = n; + locals[0] = 16; + + OCL_MAP_BUFFER(0); + for (int32_t i = 0; i < buf_size; ++i) + ((int*)buf_data[0])[i] = -1; + OCL_UNMAP_BUFFER(0); + + // Run the kernel on GPU + OCL_NDRANGE(1); + + // Compare + OCL_MAP_BUFFER(0); + int* dst = (int *)buf_data[0]; + int suggroupsize = dst[0]; + OCL_ASSERT(suggroupsize == 8 || suggroupsize == 16); + + dst++; + for (int32_t i = 0; i < (int32_t) n; ++i){ + int round = i / suggroupsize; + int index = i % suggroupsize; + OCL_ASSERT(index == dst[4*i]); + OCL_ASSERT((round * suggroupsize + c) == dst[4*i+1]); + OCL_ASSERT((round * suggroupsize + 5) == dst[4*i+2]); + OCL_ASSERT((round * suggroupsize + (suggroupsize - index - 1)) == dst[4*i+3]); + } + OCL_UNMAP_BUFFER(0); +} + +MAKE_UTEST_FROM_FUNCTION(compiler_sub_group_shuffle); -- 1.9.1 _______________________________________________ Beignet mailing list Beignet@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/beignet