{"id":2618,"date":"2013-05-28T21:05:55","date_gmt":"2013-05-28T12:05:55","guid":{"rendered":"http:\/\/peta.okechan.net\/blog\/?p=2618"},"modified":"2013-05-26T22:25:41","modified_gmt":"2013-05-26T13:25:41","slug":"aos%e3%81%8b%e3%82%89soa%e3%81%ab%e4%bb%a3%e3%81%88%e3%81%9f%e3%82%892%e5%80%8d%e3%81%90%e3%82%89%e3%81%84%e9%80%9f%e3%81%8f%e3%81%aa%e3%81%a3%e3%81%9f","status":"publish","type":"post","link":"https:\/\/peta.okechan.net\/blog\/archives\/2618","title":{"rendered":"AoS\u304b\u3089SoA\u306b\u4ee3\u3048\u305f\u30892\u500d\u3050\u3089\u3044\u901f\u304f\u306a\u3063\u305f"},"content":{"rendered":"

CUDA\u3067\u66f8\u3044\u305f\u4f8b\u306e\u30ec\u30a4\u30ad\u30e3\u30b9\u30c8\u306e\u30d7\u30ed\u30b0\u30e9\u30e0<\/a>\u304c\u3055\u3089\u306b\u9ad8\u901f\u5316\u3057\u305f\u3002<\/p>\n

\u30ab\u30fc\u30cd\u30eb\u306e\u5f15\u6570\u306b\u30ec\u30a4\u306e\u60c5\u5831\u3092\u7dda\u5f62\u30e1\u30e2\u30ea\u3067\u6e21\u3057\u3066\u305f\u304c\u3001\u305d\u306e\u4e2d\u8eab\u306f\u69cb\u9020\u4f53\u306e\u914d\u5217\uff08Array of Structs, AoS\uff09\u3060\u3063\u305f\u3002
\nGPU\u7684\u306b\u306fAoS\u3088\u308a\u914d\u5217\u306e\u69cb\u9020\u4f53\uff08Struct of Arrays, SoA\uff09\u306e\u65b9\u304c\u52b9\u7387\u7684\u306b\u6271\u3048\u308b\u3089\u3057\u3044\uff08\u30b3\u30a2\u30ec\u30c3\u30b7\u30f3\u30b0\u304c\u3089\u307f\uff1f\uff09\u306e\u3067\u3001\u30c7\u30fc\u30bf\u306e\u4e2d\u8eab\u3092AoS\u304b\u3089SoA\u306b\u3057\u3066\u307f\u305f\u3089\u3001\u306a\u3093\u3068\u51e6\u7406\u6642\u9593\u304c2\u500d\u304f\u3089\u3044\u901f\u304f\u306a\u3063\u305f\u3002<\/p>\n

Geforce 9400M\uff08Mac\uff09\u306e\u5834\u5408\u3001\u6700\u521d1.7\u79d2\u3060\u3063\u305f\u51e6\u7406\u6642\u9593\u304c\u3001atomicAdd\u306e\u52b9\u7387\u5316\u30670.9\u79d2\u306b\u3001\u3055\u3089\u306b\u4eca\u56de\u306eSoA\u5316\u30670.5\u79d2\u306b\u7e2e\u307e\u3063\u305f\u3002
\nGTX 460\uff08Ubuntu\uff09\u306e\u5834\u5408\u3001\u6700\u521d0.06\u79d2\u3060\u3063\u305f\u306e\u304c\u3001atomicAdd\u306e\u52b9\u7387\u5316\u30670.055\u79d2\u306b\u3001\u30b3\u30f3\u30d1\u30a4\u30eb\u306esm_11\u5316\u30670.04\u79d2\u306b\u3001\u3055\u3089\u306b\u4eca\u56de\u306eSoA\u5316\u30670.027\u79d2\u306b\u7e2e\u307e\u3063\u305f\u3002<\/p>\n

SoA\u5316\u306f\u3001\u69cb\u9020\u4f53\u3092float4\u306e\u30b5\u30a4\u30ba\uff0816\u30d0\u30a4\u30c8\uff09\u3067\u5206\u3051\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u884c\u3063\u305f\u3002
\n\u3055\u3089\u306b\u5c0f\u3055\u3044\u3001float\u306e\u30b5\u30a4\u30ba\uff084\u30d0\u30a4\u30c8\uff09\u3067\u3082\u8a66\u3057\u3066\u307f\u305f\u3051\u3069\u3001\u3053\u3053\u307e\u3067\u306f\u901f\u304f\u306a\u3089\u306a\u304b\u3063\u305f\u3002<\/p>\n

\u30c7\u30fc\u30bf\u306f\u3001\u30ec\u30a4\u306e\u60c5\u5831\u3001\u30ec\u30a4\u306e\u885d\u7a81\u60c5\u5831\u3001BVH\u306e\u30ce\u30fc\u30c9\u306e\u60c5\u5831\u3001\u4e09\u89d2\u5f62\u306e\u60c5\u5831\u3001\u306e4\u7a2e\u985e\u3042\u308b\u304c\u3001\u4eca\u56deSoA\u5316\u3057\u305f\u306e\u306f\u30ec\u30a4\u306e\u60c5\u5831\u306e\u307f\u3002<\/p>\n

\u3058\u3083\u3042\u3001\u4ed6\u306e\u60c5\u5831\u3082SoA\u5316\u3057\u305f\u3089\u3055\u3089\u306b\u9ad8\u901f\u5316\u3059\u308b\u3093\u3058\u3083\u306a\u3044\u304b\u3068\u601d\u3063\u3066\u8a66\u3057\u3066\u307f\u305f\u3051\u3069\u3001\u305d\u308c\u306f\u30c0\u30e1\u3060\u3063\u305f\u3002<\/p>\n

\u307e\u305a\u30011\u3064\u306e\u30ec\u30a4\u306e\u885d\u7a81\u60c5\u5831\u306e\u30b5\u30a4\u30ba\u306f\u3059\u3067\u306bfloat4\u3068\u540c\u305816\u30d0\u30a4\u30c8\u3068\u306a\u3063\u3066\u3044\u308b\u306e\u3067SoA\u5316\u51fa\u6765\u306a\u304b\u3063\u305f\u3002
\n\u6b21\u306b\u3001\u30ce\u30fc\u30c9\u306e\u60c5\u5831\u306f\u30c6\u30af\u30b9\u30c1\u30e3\u30ea\u30d5\u30a1\u30ec\u30f3\u30b9\u3092\u901a\u3057\u3066\u30e9\u30f3\u30c0\u30e0\u30a2\u30af\u30bb\u30b9\u3055\u308c\u308b\u305f\u3081\u3001SoA\u5316\u3057\u3066\u3082\u5b9f\u969b\u306e\u30a2\u30af\u30bb\u30b9\u304c\u30a2\u30c9\u30ec\u30b9\u9023\u7d9a\u306b\u306a\u3089\u306a\u3044\u304b\u3089\u304b\u3001\u3080\u3057\u308d\u5fae\u5999\u306b\u9045\u304f\u306a\u3063\u305f\u3002
\n\u4e09\u89d2\u5f62\u306e\u60c5\u5831\u306fSoA\u5316\u3092\u8a66\u3057\u3066\u306a\u3044\u3051\u3069\u3001\u30ce\u30fc\u30c9\u306e\u60c5\u5831\u3068\u540c\u3058\u3088\u3046\u306a\u6761\u4ef6\u306a\u306e\u3067\u3042\u307e\u308a\u52b9\u679c\u306f\u306a\u3044\u3060\u308d\u3046\u3002<\/p>\n

SoA\u5316\u3063\u3066\u306e\u3082\u57fa\u672c\u7684\u306a\u30c6\u30af\u30cb\u30c3\u30af\u3060\u3051\u3069\u3001\u3053\u3053\u307e\u3067\u9ad8\u901f\u5316\u3059\u308b\u3068\u306f\u601d\u308f\u306a\u304b\u3063\u305f\u3002
\n\u3057\u304b\u3057SoA\u306fget\u3084set\u3067\u30af\u30e9\u30b9\u3084\u69cb\u9020\u4f53\u3068\u306e\u76f8\u4e92\u5909\u63db\u304c\u5fc5\u8981\u306b\u306a\u308b\u306e\u3067\u3001\u5c11\u3005\u3081\u3093\u3069\u304f\u3055\u3044\u3002
\nC++\u306a\u3089\u30a2\u30ed\u30b1\u30fc\u30bf\u3092\u4f7f\u3048\u3070\u305d\u3053\u3093\u3068\u3053\u900f\u904e\u7684\u306b\u51fa\u6765\u305f\u308a\u3059\u308b\u306e\u304b\u306a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

CUDA\u3067\u66f8\u3044\u305f\u4f8b\u306e\u30ec\u30a4\u30ad\u30e3\u30b9\u30c8\u306e\u30d7\u30ed\u30b0\u30e9\u30e0<\/a>\u304c\u3055\u3089\u306b\u9ad8\u901f\u5316\u3057\u305f\u3002<\/p>\n

\u30ab\u30fc\u30cd\u30eb\u306e\u5f15\u6570\u306b\u30ec\u30a4\u306e\u60c5\u5831\u3092\u7dda\u5f62\u30e1\u30e2\u30ea\u3067\u6e21\u3057\u3066\u305f\u304c\u3001\u305d\u306e\u4e2d\u8eab\u306f\u69cb\u9020\u4f53\u306e\u914d\u5217\uff08Array of Structs, AoS\uff09\u3060\u3063\u305f\u3002
\nGPU\u7684\u306b\u306fAoS\u3088\u308a\u914d\u5217\u306e\u69cb\u9020\u4f53\uff08Struct of Arrays, SoA\uff09\u306e\u65b9\u304c\u52b9\u7387\u7684\u306b\u6271\u3048\u308b\u3089\u3057\u3044\uff08\u30b3\u30a2\u30ec\u30c3\u30b7\u30f3\u30b0\u304c\u3089\u307f\uff1f\uff09\u306e\u3067\u3001\u30c7\u30fc\u30bf\u306e\u4e2d\u8eab\u3092AoS\u304b\u3089SoA\u306b\u3057\u3066\u307f\u305f\u3089\u3001\u306a\u3093\u3068\u51e6\u7406\u6642\u9593\u304c2\u500d\u304f\u3089\u3044\u901f\u304f\u306a\u3063\u305f\u3002<\/p>\n

Geforce 9400M\uff08Mac\uff09\u306e\u5834\u5408\u3001\u6700\u521d1.7\u79d2\u3060\u3063\u305f\u51e6\u7406\u6642\u9593\u304c\u3001atomicAdd\u306e\u52b9\u7387\u5316\u30670.9\u79d2\u306b\u3001\u3055\u3089\u306b\u4eca\u56de\u306eSoA\u5316\u30670.5\u79d2\u306b\u7e2e\u307e\u3063\u305f\u3002
\nGTX 460\uff08Ubuntu\uff09\u306e\u5834\u5408\u3001\u6700\u521d0.06\u79d2\u3060\u3063\u305f\u306e\u304c\u3001atomicAdd\u306e\u52b9\u7387\u5316\u30670.055\u79d2\u306b\u3001\u30b3\u30f3\u30d1\u30a4\u30eb\u306esm_11\u5316\u30670.04\u79d2\u306b\u3001\u3055\u3089\u306b\u4eca\u56de\u306eSoA\u5316\u30670.027\u79d2\u306b\u7e2e\u307e\u3063\u305f\u3002<\/p>\n

SoA\u5316\u306f\u3001\u69cb\u9020\u4f53\u3092float4\u306e\u30b5\u30a4\u30ba\uff0816\u30d0\u30a4\u30c8\uff09\u3067\u5206\u3051\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u884c\u3063\u305f\u3002
\n\u3055\u3089\u306b\u5c0f\u3055\u3044\u3001float\u306e\u30b5\u30a4\u30ba\uff084\u30d0\u30a4\u30c8\uff09\u3067\u3082\u8a66\u3057\u3066\u307f\u305f\u3051\u3069\u3001\u3053\u3053\u307e\u3067\u306f\u901f\u304f\u306a\u3089\u306a\u304b\u3063\u305f\u3002<\/p>\n

\u30c7\u30fc\u30bf\u306f\u3001\u30ec\u30a4\u306e\u60c5\u5831\u3001\u30ec\u30a4\u306e\u885d\u7a81\u60c5\u5831\u3001BVH\u306e\u30ce\u30fc\u30c9\u306e\u60c5\u5831\u3001\u4e09\u89d2\u5f62\u306e\u60c5\u5831\u3001\u306e4\u7a2e\u985e\u3042\u308b\u304c\u3001\u4eca\u56deSoA\u5316\u3057\u305f\u306e\u306f\u30ec\u30a4\u306e\u60c5\u5831\u306e\u307f\u3002<\/p>\n

\u3058\u3083\u3042\u3001\u4ed6\u306e\u60c5\u5831\u3082SoA\u5316\u3057\u305f\u3089\u3055\u3089\u306b\u9ad8\u901f\u5316\u3059\u308b\u3093\u3058\u3083\u306a\u3044\u304b\u3068\u601d\u3063\u3066\u8a66\u3057\u3066\u307f\u305f\u3051\u3069\u3001\u305d\u308c\u306f\u30c0\u30e1\u3060\u3063\u305f\u3002<\/p>\n

\u307e\u305a\u30011\u3064\u306e\u30ec\u30a4\u306e\u885d\u7a81\u60c5\u5831\u306e\u30b5\u30a4\u30ba\u306f\u3059\u3067\u306bfloat4\u3068\u540c\u305816\u30d0\u30a4\u30c8\u3068\u306a\u3063\u3066\u3044\u308b\u306e\u3067SoA\u5316\u51fa\u6765\u306a\u304b\u3063\u305f\u3002
\n\u6b21\u306b\u3001\u30ce\u30fc\u30c9\u306e\u60c5\u5831\u306f\u30c6\u30af\u30b9\u30c1\u30e3\u30ea\u30d5\u30a1\u30ec\u30f3\u30b9\u3092\u901a\u3057\u3066\u30e9\u30f3\u30c0\u30e0\u30a2\u30af\u30bb\u30b9\u3055\u308c\u308b\u305f\u3081\u3001SoA\u5316\u3057\u3066\u3082\u5b9f\u969b\u306e\u30a2\u30af\u30bb\u30b9\u304c\u30a2\u30c9\u30ec\u30b9\u9023\u7d9a\u306b\u306a\u3089\u306a\u3044\u304b\u3089\u304b\u3001\u3080\u3057\u308d\u5fae\u5999\u306b\u9045\u304f\u306a\u3063\u305f\u3002
\n\u4e09\u89d2\u5f62\u306e\u60c5\u5831\u306fSoA\u5316\u3092\u8a66\u3057\u3066\u306a\u3044\u3051\u3069\u3001\u30ce\u30fc\u30c9\u306e\u60c5\u5831\u3068\u540c\u3058\u3088\u3046\u306a\u6761\u4ef6\u306a\u306e\u3067\u3042\u307e\u308a\u52b9\u679c\u306f\u306a\u3044\u3060\u308d\u3046\u3002<\/p>\n

SoA\u5316\u3063\u3066\u306e\u3082\u57fa\u672c\u7684\u306a\u30c6\u30af\u30cb\u30c3\u30af\u3060\u3051\u3069\u3001\u3053\u3053\u307e\u3067\u9ad8\u901f\u5316\u3059\u308b\u3068\u306f\u601d\u308f\u306a\u304b\u3063\u305f\u3002
\n\u3057\u304b\u3057SoA\u306fget\u3084set\u3067\u30af\u30e9\u30b9\u3084\u69cb\u9020\u4f53\u3068\u306e\u76f8\u4e92\u5909\u63db\u304c\u5fc5\u8981\u306b\u306a\u308b\u306e\u3067\u3001\u5c11\u3005\u3081\u3093\u3069\u304f\u3055\u3044\u3002
\nC++\u306a\u3089\u30a2\u30ed\u30b1\u30fc\u30bf\u3092\u4f7f\u3048\u3070\u305d\u3053\u3093\u3068\u3053\u900f\u904e\u7684\u306b\u51fa\u6765\u305f\u308a\u3059\u308b\u306e\u304b\u306a\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[32],"tags":[289],"class_list":["post-2618","post","type-post","status-publish","format-standard","hentry","category-tech","tag-cuda"],"_links":{"self":[{"href":"https:\/\/peta.okechan.net\/blog\/wp-json\/wp\/v2\/posts\/2618","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=2618"}],"version-history":[{"count":0,"href":"https:\/\/peta.okechan.net\/blog\/wp-json\/wp\/v2\/posts\/2618\/revisions"}],"wp:attachment":[{"href":"https:\/\/peta.okechan.net\/blog\/wp-json\/wp\/v2\/media?parent=2618"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/peta.okechan.net\/blog\/wp-json\/wp\/v2\/categories?post=2618"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/peta.okechan.net\/blog\/wp-json\/wp\/v2\/tags?post=2618"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}