Mirza Halilčević
70cf4c9dac
Change-Id: I327527288f90011f09262708dd6372a7c6fc4708
[ROCm/hip-tests commit: 8ef0d724f5]
108 lignes
3.2 KiB
C++
108 lignes
3.2 KiB
C++
/*
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Copyright (c) 2023 Advanced Micro Devices, Inc. All rights reserved.
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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*/
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#pragma once
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enum class ThreadfenceScope { kBlock, kDevice, kSystem };
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template <ThreadfenceScope scope> __device__ void Threadfence() {
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if constexpr (scope == ThreadfenceScope::kBlock) {
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__threadfence_block();
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} else if constexpr (scope == ThreadfenceScope::kDevice) {
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__threadfence();
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} else if constexpr (scope == ThreadfenceScope::kSystem) {
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__threadfence_system();
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}
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}
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static constexpr int kInitVal1 = 1, kInitVal2 = 2;
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static constexpr int kSetVal1 = 10, kSetVal2 = 20;
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template <ThreadfenceScope scope> __host__ __device__ void Write(volatile int* in) {
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in[0] = kSetVal1;
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#ifdef __HIP_DEVICE_COMPILE__
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Threadfence<scope>();
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#else
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std::atomic_thread_fence(std::memory_order_seq_cst);
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#endif
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in[1] = kSetVal2;
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}
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template <ThreadfenceScope scope>
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__host__ __device__ void Read(volatile int* out, volatile int* in) {
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out[1] = in[1];
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#ifdef __HIP_DEVICE_COMPILE__
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Threadfence<scope>();
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#else
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std::atomic_thread_fence(std::memory_order_seq_cst);
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#endif
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out[0] = in[0];
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}
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template <ThreadfenceScope scope, bool use_shared_mem>
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__device__ void ThreadfenceTest(int* out, int* in) {
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if constexpr (scope == ThreadfenceScope::kBlock || use_shared_mem) {
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if (threadIdx.x == 0 && blockIdx.x == 0) {
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Write<scope>(in);
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} else if (threadIdx.x == 1 && blockIdx.x == 0) {
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Read<scope>(out, in);
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}
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} else if constexpr (scope == ThreadfenceScope::kDevice) {
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if (threadIdx.x == 0 && blockIdx.x == 0) {
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Write<scope>(in);
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} else if (threadIdx.x == 0 && blockIdx.x == 1) {
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Read<scope>(out, in);
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}
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}
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}
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template <ThreadfenceScope scope, bool use_shared_mem>
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__global__ void ThreadfenceTestKernel(int* out, int* in) {
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extern __shared__ int shared_mem[];
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int tid = blockIdx.x * blockDim.x + threadIdx.x;
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int *out_mem = out, *in_mem = in;
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if constexpr (use_shared_mem) {
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if (tid == 0) {
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in_mem = &shared_mem[0];
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out_mem = &shared_mem[2];
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in_mem[0] = in[0];
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in_mem[1] = in[1];
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}
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__syncthreads();
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}
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ThreadfenceTest<scope, use_shared_mem>(out_mem, in_mem);
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if constexpr (use_shared_mem) {
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__syncthreads();
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if (tid == 0) {
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out[0] = out_mem[0];
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out[1] = out_mem[1];
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}
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}
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} |