214 lines
7.1 KiB
C++
214 lines
7.1 KiB
C++
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/*
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Copyright (c) 2019 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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/**
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* Build the test:
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* hipcc complex_loading_behavior.cpp -o libfoo.so -fPIC -lpthread -shared -DTEST_SHARED_LIBRARY
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* hipcc complex_loading_behavior.cpp -o complex_loading_behavior -ldl
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*
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* Run the test:
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* ./complex_loading_behavior
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*/
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#if !defined(TEST_SHARED_LIBRARY)
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#include <dlfcn.h>
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#include <iostream>
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#include <hip/hip_runtime.h>
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#define CHECK(cmd) \
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{ \
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hipError_t error = cmd; \
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if (error != hipSuccess) { \
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fprintf(stderr, "error: '%s'(%d) at %s:%d\n", hipGetErrorString(error), error, \
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__FILE__, __LINE__); \
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return (EXIT_FAILURE); \
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} \
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}
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__global__ void vector_add(float* C, float* A, float* B, size_t N) {
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size_t offset = hipBlockIdx_x * hipBlockDim_x + hipThreadIdx_x;
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size_t stride = hipBlockDim_x * hipGridDim_x;
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for (size_t i = offset; i < N; i += stride) {
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C[i] = A[i] + B[i];
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}
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}
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int launch_local_kernel() {
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float *A_d, *B_d, *C_d;
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float *A_h, *B_h, *C_h;
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size_t N = 1000000;
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size_t Nbytes = N * sizeof(float);
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static int device = 0;
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CHECK(hipSetDevice(device));
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hipDeviceProp_t props;
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CHECK(hipGetDeviceProperties(&props, device /*deviceID*/));
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A_h = (float*)malloc(Nbytes);
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CHECK(A_h == 0 ? hipErrorMemoryAllocation : hipSuccess);
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B_h = (float*)malloc(Nbytes);
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CHECK(B_h == 0 ? hipErrorMemoryAllocation : hipSuccess);
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C_h = (float*)malloc(Nbytes);
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CHECK(C_h == 0 ? hipErrorMemoryAllocation : hipSuccess);
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// Fill with Phi + i
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for (size_t i = 0; i < N; i++) {
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A_h[i] = 1.618f + i;
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B_h[i] = 1.618f + i;
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}
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CHECK(hipMalloc(&A_d, Nbytes));
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CHECK(hipMalloc(&B_d, Nbytes));
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CHECK(hipMalloc(&C_d, Nbytes));
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CHECK(hipMemcpy(A_d, A_h, Nbytes, hipMemcpyHostToDevice));
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CHECK(hipMemcpy(B_d, B_h, Nbytes, hipMemcpyHostToDevice));
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const unsigned blocks = 512;
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const unsigned threadsPerBlock = 256;
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hipLaunchKernelGGL(vector_add, dim3(blocks), dim3(threadsPerBlock), 0, 0, C_d, A_d, B_d, N);
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CHECK(hipMemcpy(C_h, C_d, Nbytes, hipMemcpyDeviceToHost));
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CHECK(hipFree(A_d));
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CHECK(hipFree(B_d));
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CHECK(hipFree(C_d));
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free(A_h);
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free(B_h);
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free(C_h);
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std::cout << "local launch succedded\n";
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return 0;
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}
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int launch_dynamically_loaded_kernel() {
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void* handle = dlopen("./libfoo.so", RTLD_LAZY);
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if (!handle) {
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std::cout << dlerror() << "\n";
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return -1;
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}
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std::cout << "loaded libfoo.so\n";
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void* sym = dlsym(handle, "foo");
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if (!sym) {
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std::cout << "unable to locate foo within libfoo.so\n";
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std::cout << dlerror() << "\n";
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dlclose(handle);
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return -1;
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}
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int(*fp)() = reinterpret_cast<int(*)()>(sym);
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int ret = fp();
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if (ret) {
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std::cout << "dynamic launch failed\n";
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} else {
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std::cout << "dynamic launch succeeded\n";
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}
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dlclose(handle);
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return ret;
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}
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int main() {
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int ret = 0;
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ret = launch_local_kernel();
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if (ret) {
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return ret;
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}
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ret = launch_dynamically_loaded_kernel();
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if (ret) {
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return ret;
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}
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return 0;
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}
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#else // !defined(TEST_SHARED_LIBRARY)
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#include <dlfcn.h>
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#include <iostream>
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#include <hip/hip_runtime.h>
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#define CHECK(cmd) \
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{ \
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hipError_t error = cmd; \
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if (error != hipSuccess) { \
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fprintf(stderr, "error: '%s'(%d) at %s:%d\n", hipGetErrorString(error), error, \
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__FILE__, __LINE__); \
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return (EXIT_FAILURE); \
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} \
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}
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__global__ void vadd(float* C, float* A, float* B, size_t N) {
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size_t offset = hipBlockIdx_x * hipBlockDim_x + hipThreadIdx_x;
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size_t stride = hipBlockDim_x * hipGridDim_x;
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for (size_t i = offset; i < N; i += stride) {
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C[i] = A[i] + B[i];
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}
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}
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extern "C" int foo() {
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float *A_d, *B_d, *C_d;
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float *A_h, *B_h, *C_h;
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size_t N = 1000000;
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size_t Nbytes = N * sizeof(float);
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static int device = 0;
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CHECK(hipSetDevice(device));
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hipDeviceProp_t props;
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CHECK(hipGetDeviceProperties(&props, device /*deviceID*/));
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A_h = (float*)malloc(Nbytes);
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CHECK(A_h == 0 ? hipErrorMemoryAllocation : hipSuccess);
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B_h = (float*)malloc(Nbytes);
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CHECK(B_h == 0 ? hipErrorMemoryAllocation : hipSuccess);
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C_h = (float*)malloc(Nbytes);
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CHECK(C_h == 0 ? hipErrorMemoryAllocation : hipSuccess);
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// Fill with Phi + i
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for (size_t i = 0; i < N; i++) {
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A_h[i] = 1.618f + i;
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B_h[i] = 1.618f + i;
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}
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CHECK(hipMalloc(&A_d, Nbytes));
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CHECK(hipMalloc(&B_d, Nbytes));
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CHECK(hipMalloc(&C_d, Nbytes));
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CHECK(hipMemcpy(A_d, A_h, Nbytes, hipMemcpyHostToDevice));
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CHECK(hipMemcpy(B_d, B_h, Nbytes, hipMemcpyHostToDevice));
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const unsigned blocks = 512;
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const unsigned threadsPerBlock = 256;
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std::cout << "Launch vadd\n";
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hipLaunchKernelGGL(vadd, dim3(blocks), dim3(threadsPerBlock), 0, 0, C_d, A_d, B_d, N);
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CHECK(hipMemcpy(C_h, C_d, Nbytes, hipMemcpyDeviceToHost));
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CHECK(hipFree(A_d));
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CHECK(hipFree(B_d));
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CHECK(hipFree(C_d));
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free(A_h);
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free(B_h);
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free(C_h);
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return 0;
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}
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#endif // !defined(TEST_SHARED_LIBRARY)
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