{"id":2556,"date":"2013-05-20T17:29:41","date_gmt":"2013-05-20T08:29:41","guid":{"rendered":"http:\/\/peta.okechan.net\/blog\/?p=2556"},"modified":"2013-05-20T17:42:14","modified_gmt":"2013-05-20T08:42:14","slug":"xcode%e3%81%a7opencl-api%e3%81%aec-wrapper%e3%82%92%e4%bd%bf%e3%81%a3%e3%81%a6%e3%81%bf%e3%82%8b","status":"publish","type":"post","link":"https:\/\/peta.okechan.net\/blog\/archives\/2556","title":{"rendered":"Xcode\u3067OpenCL API\u306eC++ Wrapper\u3092\u4f7f\u3063\u3066\u307f\u308b"},"content":{"rendered":"

\u524d\u56de<\/a>\u30db\u30b9\u30c8\u30b3\u30fc\u30c9\u3092C++\u3067\u66f8\u3044\u305f\u304c\u3001C\u306eAPI\u3092\u4f7f\u3063\u3066\u3044\u305f\u305f\u3081C++\u3089\u3057\u3055\u306f\u3042\u307e\u308a\u8868\u73fe\u51fa\u6765\u3066\u3044\u306a\u304b\u3063\u305f\u3002
\n\u3042\u308c\u304b\u3089\u3001OpenCL API\u306eC++ Wrapper(OpenCL C++ Bindings)<\/a>\u3068\u3044\u3046\u3082\u306e\u306e\u5b58\u5728\u3092\u77e5\u3063\u305f\u306e\u3067\u3001\u305d\u308c\u3092\u4f7f\u3063\u3066\u524d\u56de\u306e\u30db\u30b9\u30c8\u30b3\u30fc\u30c9\u3092\u3055\u3089\u306bC++\u3063\u307d\u304f\u66f8\u304d\u63db\u3048\u3066\u307f\u305f\u3002
\n\u30bd\u30fc\u30b9\uff08\u30db\u30b9\u30c8\u30b3\u30fc\u30c9\u306e\u307f\uff09\u306f\u3053\u306e\u8a18\u4e8b\u306e\u6700\u5f8c\u306b\u8f09\u305b\u3066\u3042\u308b\u3002<\/p>\n

C++\u3067\u958b\u767a\u3059\u308b\u969b\u306f\u3001\u3053\u306eWrapper\u304c\u3042\u308b\u3068\u304b\u306a\u308a\u697d\u306b\u306a\u308b\u3002
\n\u4f8b\u5916\u304c\u4f7f\u3048\u308b\u306e\u3067\u3001\u30a8\u30e9\u30fc\u30c1\u30a7\u30c3\u30af\u306e\u305f\u3081\u306e\u30b3\u30fc\u30c9\u3092\u9010\u4e00\u633f\u5165\u3059\u308b\u5fc5\u8981\u304c\u306a\u3044\u3057\u3001\u30c7\u30b9\u30c8\u30e9\u30af\u30bf\u3067\u5404\u7a2e\u30ea\u30bd\u30fc\u30b9\u304c\u89e3\u653e\u3055\u308c\u308b\u3088\u3046\u306b\u306a\u3063\u3066\u308b\u305f\u3081\u3001\u57fa\u672c\u7684\u306b\u305d\u306e\u8fba\u308a\u3092\u6c17\u306b\u3057\u306a\u304f\u3066\u826f\u3044\u3002<\/p>\n

\u30ab\u30fc\u30cd\u30eb\u3082C++\u3067\u66f8\u3051\u308b\u3068\u3044\u3044\u306e\u306b\u3002\uff08\u74b0\u5883\u306e\u9650\u5b9a\u306a\u3057\u3067\u3002\uff09<\/p>\n

\u4ee5\u4e0b\u30bd\u30fc\u30b9\u3002<\/p>\n

#include <iostream>\r\n#include <vector>\r\n#include <string>\r\n\r\n#define __CL_ENABLE_EXCEPTIONS\r\n#include "cl.hpp"\r\n\r\n\r\nint main(int argc, const char * argv[])\r\n{\r\n    \/\/ \u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u4e00\u89a7\u3092\u53d6\u5f97\r\n    std::vector<cl::Platform> platforms;\r\n    cl::Platform::get(&platforms);\r\n    if (platforms.size() == 0) {\r\n        std::cerr << "No platform.\\n";\r\n        return EXIT_FAILURE;\r\n    }\r\n    \r\n    \/\/ \u898b\u3064\u304b\u3063\u305f\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u306e\u60c5\u5831\u3092\u5370\u5b57\r\n    std::cout << platforms.size() << " platform(s) found.\\n";\r\n    for (auto p : platforms) {\r\n        std::cout << "Platform: " << p.getInfo<CL_PLATFORM_NAME>() << "\\n";\r\n        std::cout << "Vendor: " << p.getInfo<CL_PLATFORM_VENDOR>() << "\\n";\r\n        std::cout << "Version: " << p.getInfo<CL_PLATFORM_VERSION>() << "\\n";\r\n        std::cout << "Profile: " << p.getInfo<CL_PLATFORM_PROFILE>() << "\\n";\r\n        std::cout << "\\n";\r\n    }\r\n    \r\n    \/\/ \u30c7\u30d0\u30a4\u30b9\u4e00\u89a7\u3092\u53d6\u5f97\r\n    std::vector<cl::Device> devices;\r\n    platforms[0].getDevices(CL_DEVICE_TYPE_GPU, &devices);\r\n    if (devices.size() == 0) {\r\n        std::cerr << "No device.\\n";\r\n        return EXIT_FAILURE;\r\n    }\r\n    \r\n    \/\/ \u898b\u3064\u304b\u3063\u305f\u30c7\u30d0\u30a4\u30b9\u306e\u60c5\u5831\u3092\u5370\u5b57\r\n    std::cout << devices.size() << " device(s) found.\\n";\r\n    for (auto d : devices) {\r\n        std::cout << "Device: " << d.getInfo<CL_DEVICE_NAME>() << "\\n";\r\n        std::cout << "Vendor: " << d.getInfo<CL_DEVICE_VENDOR>() << "\\n";\r\n        std::cout << "Version: " << d.getInfo<CL_DEVICE_VERSION>() << "\\n";\r\n        std::cout << "Profile: " << d.getInfo<CL_DEVICE_PROFILE>() << "\\n";\r\n        std::cout << "\\n";\r\n    }\r\n    \r\n    \/\/ \u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u306e\u4f5c\u6210\r\n    cl::Context ctx(devices);\r\n    \r\n    \/\/ \u30b3\u30f3\u30d1\u30a4\u30eb\u6e08\u307fcl\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u8aad\u307f\u8fbc\u307f\r\n    std::string bitcode_path = "OpenCL\/kernel.cl.gpu_32.bc";\r\n    cl::Program program = cl::Program(ctx, devices, {\r\n        {bitcode_path.c_str(), bitcode_path.length()}\r\n    });\r\n    \r\n    \/\/ \u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u30d3\u30eb\u30c9\r\n    program.build(devices);\r\n    \r\n    \/\/ \u30ab\u30fc\u30cd\u30eb\u306e\u4f5c\u6210\r\n    cl::Kernel kernel(program, "addone");\r\n    \r\n    \/\/ \u30c7\u30fc\u30bf\u3092\u7528\u610f\r\n    int n = 1000;\r\n    std::vector<float> h_data(n);\r\n    for (int i = 0; i < n; i++) {\r\n        h_data[i] = float(i);\r\n    }\r\n    \r\n    \/\/ \u30c7\u30d0\u30a4\u30b9\u30e1\u30e2\u30ea\u3092\u78ba\u4fdd\u3057\u3064\u3064\u30c7\u30fc\u30bf\u3092\u30b3\u30d4\u30fc\r\n    cl::Buffer d_data(ctx, CL_MEM_READ_WRITE | CL_MEM_COPY_HOST_PTR, sizeof(float) * n, h_data.data());\r\n    \r\n    \/\/ \u30ab\u30fc\u30cd\u30eb\u306e\u5f15\u6570\u3092\u30bb\u30c3\u30c8\r\n    kernel.setArg(0, d_data);\r\n    kernel.setArg(1, n);\r\n    \r\n    \/\/ \u30b3\u30de\u30f3\u30c9\u30ad\u30e5\u30fc\u306e\u4f5c\u6210\r\n    cl::CommandQueue q(ctx, devices[0]);\r\n    \r\n    \/\/ \u30ab\u30fc\u30cd\u30eb\u306e\u5b9f\u884c\r\n    cl::NDRange global(n, 1, 1);\r\n    q.enqueueNDRangeKernel(kernel, cl::NullRange, global);\r\n    \r\n    \/\/ \u7d50\u679c\u3092\u8aad\u307f\u8fbc\u307f\r\n    q.enqueueReadBuffer(d_data, CL_TRUE, 0, sizeof(float) * n, h_data.data());\r\n    \r\n    \/\/ \u7d50\u679c\u306e\u5370\u5b57\r\n    for (int i = 0; i < n; i++) {\r\n        std::cout << h_data[i] << ", ";\r\n    }\r\n    std::cout << "\\n";\r\n    \r\n    std::cout << "Done.\\n";\r\n    return EXIT_SUCCESS;\r\n}<\/pre>\n","protected":false},"excerpt":{"rendered":"
\u524d\u56de<\/a>\u30db\u30b9\u30c8\u30b3\u30fc\u30c9\u3092C++\u3067\u66f8\u3044\u305f\u304c\u3001C\u306eAPI\u3092\u4f7f\u3063\u3066\u3044\u305f\u305f\u3081C++\u3089\u3057\u3055\u306f\u3042\u307e\u308a\u8868\u73fe\u51fa\u6765\u3066\u3044\u306a\u304b\u3063\u305f\u3002
\n\u3042\u308c\u304b\u3089\u3001OpenCL API\u306eC++ Wrapper(OpenCL C++ Bindings)<\/a>\u3068\u3044\u3046\u3082\u306e\u306e\u5b58\u5728\u3092\u77e5\u3063\u305f\u306e\u3067\u3001\u305d\u308c\u3092\u4f7f\u3063\u3066\u524d\u56de\u306e\u30db\u30b9\u30c8\u30b3\u30fc\u30c9\u3092\u3055\u3089\u306bC++\u3063\u307d\u304f\u66f8\u304d\u63db\u3048\u3066\u307f\u305f\u3002
\n\u30bd\u30fc\u30b9\uff08\u30db\u30b9\u30c8\u30b3\u30fc\u30c9\u306e\u307f\uff09\u306f\u3053\u306e\u8a18\u4e8b\u306e\u6700\u5f8c\u306b\u8f09\u305b\u3066\u3042\u308b\u3002<\/p>\n
C++\u3067\u958b\u767a\u3059\u308b\u969b\u306f\u3001\u3053\u306eWrapper\u304c\u3042\u308b\u3068\u304b\u306a\u308a\u697d\u306b\u306a\u308b\u3002
\n\u4f8b\u5916\u304c\u4f7f\u3048\u308b\u306e\u3067\u3001\u30a8\u30e9\u30fc\u30c1\u30a7\u30c3\u30af\u306e\u305f\u3081\u306e\u30b3\u30fc\u30c9\u3092\u9010\u4e00\u633f\u5165\u3059\u308b\u5fc5\u8981\u304c\u306a\u3044\u3057\u3001\u30c7\u30b9\u30c8\u30e9\u30af\u30bf\u3067\u5404\u7a2e\u30ea\u30bd\u30fc\u30b9\u304c\u89e3\u653e\u3055\u308c\u308b\u3088\u3046\u306b\u306a\u3063\u3066\u308b\u305f\u3081\u3001\u57fa\u672c\u7684\u306b\u305d\u306e\u8fba\u308a\u3092\u6c17\u306b\u3057\u306a\u304f\u3066\u826f\u3044\u3002<\/p>\n
\u30ab\u30fc\u30cd\u30eb\u3082C++\u3067\u66f8\u3051\u308b\u3068\u3044\u3044\u306e\u306b\u3002\uff08\u74b0\u5883\u306e\u9650\u5b9a\u306a\u3057\u3067\u3002\uff09<\/p>\n
\u4ee5\u4e0b\u30bd\u30fc\u30b9\u3002<\/p>\n
#include <iostream>\r\n#include <vector>\r\n#include <string>\r\n\r\n#define __CL_ENABLE_EXCEPTIONS\r\n#include "cl.hpp"\r\n\r\n\r\nint main(int argc, const char * argv[])\r\n{\r\n    \/\/ \u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u4e00\u89a7\u3092\u53d6\u5f97\r\n    std::vector<cl::Platform> platforms;\r\n    cl::Platform::get(&platforms);\r\n    if (platforms.size() == 0) {\r\n        std::cerr << "No platform.\\n";\r\n        return EXIT_FAILURE;\r\n    }\r\n    \r\n    \/\/ \u898b\u3064\u304b\u3063\u305f\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u306e\u60c5\u5831\u3092\u5370\u5b57\r\n    std::cout << platforms.size() << " platform(s) found.\\n";\r\n    for (auto p : platforms) {\r\n        std::cout << "Platform: " << p.getInfo<CL_PLATFORM_NAME>() << "\\n";\r\n        std::cout << "Vendor: " << p.getInfo<CL_PLATFORM_VENDOR>() << "\\n";\r\n        std::cout << "Version: " << p.getInfo<CL_PLATFORM_VERSION>() << "\\n";\r\n        std::cout << "Profile: " << p.getInfo<CL_PLATFORM_PROFILE>() << "\\n";\r\n        std::cout << "\\n";\r\n    }\r\n    \r\n    \/\/ \u30c7\u30d0\u30a4\u30b9\u4e00\u89a7\u3092\u53d6\u5f97\r\n    std::vector<cl::Device> devices;\r\n    platforms[0].getDevices(CL_DEVICE_TYPE_GPU, &devices);\r\n    if (devices.size() == 0) {\r\n        std::cerr << "No device.\\n";\r\n        return EXIT_FAILURE;\r\n    }\r\n    \r\n    \/\/ \u898b\u3064\u304b\u3063\u305f\u30c7\u30d0\u30a4\u30b9\u306e\u60c5\u5831\u3092\u5370\u5b57\r\n    std::cout << devices.size() << " device(s) found.\\n";\r\n    for (auto d : devices) {\r\n        std::cout << "Device: " << d.getInfo<CL_DEVICE_NAME>() << "\\n";\r\n        std::cout << "Vendor: " << d.getInfo<CL_DEVICE_VENDOR>() << "\\n";\r\n        std::cout << "Version: " << d.getInfo<CL_DEVICE_VERSION>() << "\\n";\r\n        std::cout << "Profile: " << d.getInfo<CL_DEVICE_PROFILE>() << "\\n";\r\n        std::cout << "\\n";\r\n    }\r\n    \r\n    \/\/ \u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u306e\u4f5c\u6210\r\n    cl::Context ctx(devices);\r\n    \r\n    \/\/ \u30b3\u30f3\u30d1\u30a4\u30eb\u6e08\u307fcl\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u8aad\u307f\u8fbc\u307f\r\n    std::string bitcode_path = "OpenCL\/kernel.cl.gpu_32.bc";\r\n    cl::Program program = cl::Program(ctx, devices, {\r\n        {bitcode_path.c_str(), bitcode_path.length()}\r\n    });\r\n    \r\n    \/\/ \u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u30d3\u30eb\u30c9\r\n    program.build(devices);\r\n    \r\n    \/\/ \u30ab\u30fc\u30cd\u30eb\u306e\u4f5c\u6210\r\n    cl::Kernel kernel(program, "addone");\r\n    \r\n    \/\/ \u30c7\u30fc\u30bf\u3092\u7528\u610f\r\n    int n = 1000;\r\n    std::vector<float> h_data(n);\r\n    for (int i = 0; i < n; i++) {\r\n        h_data[i] = float(i);\r\n    }\r\n    \r\n    \/\/ \u30c7\u30d0\u30a4\u30b9\u30e1\u30e2\u30ea\u3092\u78ba\u4fdd\u3057\u3064\u3064\u30c7\u30fc\u30bf\u3092\u30b3\u30d4\u30fc\r\n    cl::Buffer d_data(ctx, CL_MEM_READ_WRITE | CL_MEM_COPY_HOST_PTR, sizeof(float) * n, h_data.data());\r\n    \r\n    \/\/ \u30ab\u30fc\u30cd\u30eb\u306e\u5f15\u6570\u3092\u30bb\u30c3\u30c8\r\n    kernel.setArg(0, d_data);\r\n    kernel.setArg(1, n);\r\n    \r\n    \/\/ \u30b3\u30de\u30f3\u30c9\u30ad\u30e5\u30fc\u306e\u4f5c\u6210\r\n    cl::CommandQueue q(ctx, devices[0]);\r\n    \r\n    \/\/ \u30ab\u30fc\u30cd\u30eb\u306e\u5b9f\u884c\r\n    cl::NDRange global(n, 1, 1);\r\n    q.enqueueNDRangeKernel(kernel, cl::NullRange, global);\r\n    \r\n    \/\/ \u7d50\u679c\u3092\u8aad\u307f\u8fbc\u307f\r\n    q.enqueueReadBuffer(d_data, CL_TRUE, 0, sizeof(float) * n, h_data.data());\r\n    \r\n    \/\/ \u7d50\u679c\u306e\u5370\u5b57\r\n    for (int i = 0; i < n; i++) {\r\n        std::cout << h_data[i] << ", ";\r\n    }\r\n    std::cout << "\\n";\r\n    \r\n    std::cout << "Done.\\n";\r\n    return EXIT_SUCCESS;\r\n}<\/pre>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[32],"tags":[456],"class_list":["post-2556","post","type-post","status-publish","format-standard","hentry","category-tech","tag-opencl"],"_links":{"self":[{"href":"https:\/\/peta.okechan.net\/blog\/wp-json\/wp\/v2\/posts\/2556","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/peta.okechan.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/peta.okechan.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/peta.okechan.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/peta.okechan.net\/blog\/wp-json\/wp\/v2\/comments?post=2556"}],"version-history":[{"count":0,"href":"https:\/\/peta.okechan.net\/blog\/wp-json\/wp\/v2\/posts\/2556\/revisions"}],"wp:attachment":[{"href":"https:\/\/peta.okechan.net\/blog\/wp-json\/wp\/v2\/media?parent=2556"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/peta.okechan.net\/blog\/wp-json\/wp\/v2\/categories?post=2556"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/peta.okechan.net\/blog\/wp-json\/wp\/v2\/tags?post=2556"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}