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pulltop-birth id:pulltop-birth

optimizationã«é–¢ã™ã‚‹pulltop-birthã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (25)

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OpenCLã‚„ã‚‹å‰ã«SIMDä½¿ã„åˆ‡ã‚Œã£ã¦ã„ã†å¹»æƒ³ - aokomoriuta's blog
ãŠè©«ã³ ã‚¢ãƒ©ã‚¤ãƒ³å¿˜ã‚Œã¦ã¾ã—ãŸã”ã‚ã‚“ãªã•ã„ã€ã§ã‚‚æ™‚é–“ã‚ã‚“ã¾ã‚Šå¤‰ã‚ã£ã¦ãªã„ã‹ã‚‰è¨±ã—ã¦ãƒ»ãƒ»ãƒ» https://t.co/JNtq2U2kMqâ€” é’åå®ˆæŒ (@aokomoriuta) April 29, 2015 ã§ã¯æœ¬ç·¨ã©ã†ãžâ†“ æœ¬ç·¨ è‹¥å¹²è©±é¡Œã«ä¹—ã‚Šé…ã‚ŒãŸæ„Ÿã‚ã‚Šã¾ã™ãŒã€‚ d.hatena.ne.jp ã‘ã©ã€SSEã‚‚çŸ¥ã‚‰ããƒ¼ã€SIMDã‚‚çŸ¥ã‚‰ããƒ¼ã€ãªã‚“ã‹ä¿ºãŒæ›¸ã„ãŸã‚¢ãƒ«ã‚´ãƒªã‚ºãƒ é…ã„ã‘ã©ã¨ã‚Šã‚ãˆãšOpenCLã¨ã‹ã§é«˜é€ŸåŒ–ã—ã‚ˆã£ã‹ãªãƒ¼ã¨ã‹ãã€ç”˜ã£ãŸã‚Œã¦ã‚“ã˜ã‚ƒããˆã‚ˆã€‚CPUã‚’ã‚‚ã£ã¨ä½¿ã„ãã‚Œã‚ˆã€‚ãŠå‰ã®ã‚¢ã‚ªã„ã‚³ãƒ¼ãƒ‰ã®ã›ã„ã§CPUãŒæ³£ã„ã¦ã‚‹ã‚ˆã€‚ã£ã¦ã„ã†è©±ã§ã™ã‚ˆã€‚ GPGPUãªã‚“ã¦ã®ã¯SIMDã‚’ä½¿ã„åˆ‡ã£ãŸå¾Œã®è©±ã§ã—ã‚‡ã€‚ GPGPUã™ã‚‹ã®ã«GPUã®ãƒ‘ãƒ¯ãƒ¼ã¨ãƒ¡ãƒ¢ãƒªãŒè¶³ã‚Šã¾ã›ã‚“ã¨ã‹è¨€ã†å‰ã«ã¾ãšSIMDã‹ã‚‰ã ã‚ã€‚ ã¨ã‹è¨€ã‚ã‚Œã¦ãŸã®ã§ã€æ¤œè¨¼ã™ã‚‹ã“ã¨ã«ã—ãŸï¼ˆã‚„ã£ã¤ã‘ï¼‰ã€‚ ç’°å¢ƒ OS: Windows 7 Profession
pulltop-birth 2015/05/02
optimization
ãƒªãƒ³ã‚¯
2014-01-22
http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clSetEventCallback.html ã“ã‚Œã®ã‚³ãƒ¼ãƒ«ãƒãƒƒã‚¯(pfn_event_notify)æ£ã—ãå®Ÿè£…ã™ã‚‹ã®ä¸å¯èƒ½ã§ã¯ï¼Ÿã¨ã„ã†æ°—ãŒã—ãŸ çµŒç·¯ : https://twitter.com/tanakmura/status/399251693092605952 https://twitter.com/tanakmura/status/399252471903567872 https://twitter.com/tanakmura/status/399252550756487168 https://twitter.com/tanakmura/status/399253075396788224 khronos.org/registry/cl/sdk/1.1/docs/man
pulltop-birth 2014/01/22
ai-isa-jit ã§å¦ã¶GCN

optimization
ãƒªãƒ³ã‚¯
Test functions for optimization - Wikipedia
In applied mathematics, test functions, known as artificial landscapes, are useful to evaluate characteristics of optimization algorithms, such as convergence rate, precision, robustness and general performance. Here some test functions are presented with the aim of giving an idea about the different situations that optimization algorithms have to face when coping with these kinds of probl ems. In
pulltop-birth 2013/12/09
optimization

math
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MPGv2.1
Mathematical Programming GlossaryÂ© This glossary contains terms specific to mathematical programming and related disciplines like economics, computer science, and mathematics. The following are of general interest (you should read them if this is your first time here). General Information - A list of dictionaries, suggested methods of citation, and contribution instructions. Acknowledgments - We a
pulltop-birth 2013/10/05
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optimization
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x86/x64æœ€é©åŒ–å‹‰å¼·ä¼š6 ãƒ¬ãƒãƒ¼ãƒˆ - Cybozu Inside Out | ã‚µã‚¤ãƒœã‚¦ã‚ºã‚¨ãƒ³ã‚¸ãƒ‹ã‚¢ã®ãƒ–ãƒã‚°
ã“ã‚“ã«ã¡ã¯ã‚µã‚¤ãƒœã‚¦ã‚ºãƒ»ãƒ©ãƒœã®å…‰æˆã§ã™ã€‚ ä»Šå›žã¯8æœˆ31æ—¥ã«é–‹å‚¬ã•ã‚ŒãŸã€Œx86/x64æœ€é©åŒ–å‹‰å¼·ä¼š6ã€ã®æ¨¡æ§˜ã«ã¤ã„ã¦ãŠä¼ãˆã—ã¾ã™ã€‚ ä»Šå›žã®å‹‰å¼·ä¼šã§ã¯ã€6æœˆã«ç™ºå£²ã•ã‚ŒãŸ Haswell ã®æ–°ã—ã„æ©Ÿèƒ½ã«ã‹ã‹ã‚ã‚‹ã‚‚ã®ãŒ3ä»¶ã€C++ ã«ã‚ˆã‚‹ã‚²ãƒ¼ãƒ é–‹ç™ºã®ç’°å¢ƒã«ã‹ã‹ã‚ã‚‹ã‚‚ã®ã€ARMã¨ x86 ã®æ¯”è¼ƒã€Xeon Phi ã«ã¤ã„ã¦ãŒãã‚Œãžã‚Œ1ä»¶ãšã¤ã®ç™ºè¡¨ã§ã—ãŸã€‚ ä»¥ä¸‹ã€ãã‚Œãžã‚Œã®ç™ºè¡¨å†…å®¹ã«ã¤ã„ã¦ç°¡å˜ã«è§£èª¬ã—ã¾ã™ã€‚ Haswell é–¢ä¿‚ ç§ã¯ã€ŒHaswellã‚µãƒ¼ãƒ™ã‚¤ã¨æœ‰é™ä½“ã‚¯ãƒ©ã‚¹ã®ç´¹ä»‹ã€(å‹•ç”»1)ã‚’ç™ºè¡¨ã—ã¾ã—ãŸã€‚å‰åŠã¯ Haswell ã®å¾©ç¿’ã¨ã—ã¦ã€ãƒ‘ã‚¤ãƒ—ãƒ©ã‚¤ãƒ³ã®æ”¹è‰¯ç‚¹ã¨ã€256bit é•·ã«å¯¾å¿œã—ãŸæ•´æ•°æ¼”ç®—å‘½ä»¤ AVX2ã€ç©å’Œæ¼”ç®—ã‚’1å‘½ä»¤ã§è¡Œã† FMAã€ã„ãã¤ã‹ã®ãƒ“ãƒƒãƒˆæ¼”ç®—å‘½ä»¤ã‚„æš—å·ç”¨é€”ã®æ•´æ•°æ¼”ç®—å‘½ä»¤ãªã©ã«ã¤ã„ã¦ã‚µãƒ³ãƒ—ãƒ«ã‚³ãƒ¼ãƒ‰ã‚’ç¤ºã—ã¤ã¤ç´¹ä»‹ã—ã¾ã—ãŸã€‚gcc 4.8 ãªã©ã®æ–°ã—ã„ã‚³ãƒ³ãƒ‘ã‚¤ãƒ©ã§ã¯ã€ã‚½ãƒ¼ã‚¹ã‚³ãƒ¼ãƒ‰ã‚’å¤‰
pulltop-birth 2013/09/05
optimization
ãƒªãƒ³ã‚¯
ï¼ˆç¿»è¨³ï¼‰C/C++ã®Strict Aliasingã‚’ç†è§£ã™ã‚‹ ã¾ãŸã¯ - ã©ã†ã—ã¦#$@##@^%ã‚³ãƒ³ãƒ‘ã‚¤ãƒ©ã¯åƒ•ãŒã—ãŸã„äº‹ã‚’ã•ã›ã¦ãã‚Œãªã„ã®ï¼ - yohhoyã®æ—¥è¨˜
å…ƒè¨˜äº‹ï¼šUnderstanding C/C++ Strict Aliasing, or - Why won't the #$@##@^% compiler let me do what I need to do!, Patrick Horganæ° è¨³å‡ºãƒ¡ãƒ¢ï¼š è‡ªåˆ†è‡ªèº«ã®ç†è§£ã®ãŸã‚ã«æ—¥æœ¬èªžè¨³ã‚’è¡Œã£ãŸStrict Aliasing Rulesè§£èª¬è¨˜äº‹ã€‚ è¨³æ–‡ä¸ã§ã¯ "aliasing/alias", "strict aliasing rules", "type punning" ã‚’ãã®ã¾ã¾è¡¨è¨˜ã™ã‚‹ã€‚ç›´è¨³ã™ã‚Œã° "åˆ¥åï¼ˆã‚¨ã‚¤ãƒªã‚¢ã‚·ãƒ³ã‚°ï¼‰", "åŽ³å¯†ãªåˆ¥åè¦å‰‡", "åž‹ã‚‚ã˜ã‚Šï¼ˆè¨€ã„æ›ãˆï¼‰" ã¨ãªã‚‹ã€‚ ã¨ã“ã‚ã§ã€ä½•ãŒå•é¡Œãªã®ï¼Ÿ strict aliasing rulesã«é–¢ã—ã¦ã¯å¤šãã®æ··ä¹±ãŒè¦‹ã‚‰ã‚Œã¾ã™ã€‚äººã€…ã‚’æ··ä¹±ã•ã›ã‚‹ä¸»è¦å› ã¨ãªã£ã¦ã„ã‚‹ã®ã¯ã€aliasingã«è¨€åŠã™ã‚‹2ç¨®é¡žã®ç•°ãªã‚‹ã‚°ãƒ«ãƒ¼ãƒ—; ã‚³ãƒ³ãƒ‘
pulltop-birth 2013/09/02
C

optimization
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é«˜é€Ÿãªé€†æ•°å¹³æ–¹æ ¹ã®è¿‘ä¼¼è¨ˆç®— - melancholic afternoon
pulltop-birth 2013/09/01
optimization
ãƒªãƒ³ã‚¯
Intel(R) 64 and IA-32 Architectures Software Developer's Manuals
Overview These manuals describe the architecture and programming environment of the IntelÂ® 64 and IA-32 architectures. Electronic versions of these documents allow you to quickly get the information you need and print only the pages you want. The IntelÂ® 64 and IA-32 architectures software developer's manuals are now available for download via one combined volume, a four-volume set, or a ten-volume
pulltop-birth 2013/08/27
architecture

optimization
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Paul Hsieh's collection of division approximations
pulltop-birth 2013/08/24
optimization
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perfã®ä½¿ã„ã‹ãŸ
æ¦‚è¦ Linuxã®ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹è§£æžãƒ„ãƒ¼ãƒ«ã§ã‚ã‚‹perfã®ä½¿ã„ã‹ãŸã®ç´¹ä»‹ èƒŒæ™¯ å€‹äººçš„ã«perfã‚ˆãã§ãã¦ã‚‹ã¨æ€ã†ã®ã§ç´¹ä»‹ã—ãŸã„ã¨ã„ã†ã®ã¨ã€ ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹ã‚«ã‚¦ãƒ³ã‚¿ã®èªã¿æ–¹ã£ã¦ã‚ã‚“ã¾ã‚ŠçŸ¥ã‚‰ã‚Œã¦ãªã„ã¿ãŸã„ãªã®ã§ã€ ãã‚Œã®è§£èª¬ã‚’æ›¸ããŸã„ã€‚ æ§‹æˆ perf ã«ã¤ã„ã¦èª¬æ˜Žã—ãŸã‚ã¨ã€ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹ã‚«ã‚¦ãƒ³ã‚¿ã®èªã¿ã‹ãŸã€è¦‹ã‹ãŸã€ã‚’èª¬æ˜Žã™ã‚‹ã€‚ perfã¨ã¯ä½•ã‹ Linuxã«ä»˜ã„ã¦ãã‚‹ãƒ—ãƒãƒ•ã‚¡ã‚¤ãƒ©ã€‚ man perf ã«ã‚ˆã‚‹ã¨ã€ NAME ---- perf - Performance analysis tools for Linux ã¨ã€æ›¸ã„ã¦ã‚ã‚‹ã€‚åå‰ãŒã²ã©ã„ã®ã§ãªã‚“ã¨ã‹ã—ã¦ã»ã—ã„ã€‚ perf ã®ç‰¹å¾´ å€‹äººçš„ã«ã¯ã€æ‰‹è»½ã«ä½¿ãˆã‚‹ã®ãŒç´ æ™´ã‚‰ã—ã„ã¨æ€ã†ã€‚ 2.6.31ä»¥é™ã‚«ãƒ¼ãƒãƒ«ã«æ¨™æº–ã§ä»˜ã„ã¦ã‚‹ã€‚(Ubuntuã ã¨linux-tools-common(TODO:ã‚ã¨ã§ç¢ºèª)ã§å…¥ã‚‹ã¯ãš) ç‰¹æ®Šãªè¨å®šãŒå¿…è¦ç„¡ãã€
pulltop-birth 2013/07/05
programming

optimization
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perfã‚’ä½¿ã†
æ¦‚è¦ Linuxã®ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹è§£æžãƒ„ãƒ¼ãƒ«ã§ã‚ã‚‹perfã®ä½¿ã„ã‹ãŸã®ç´¹ä»‹ å‰æçŸ¥è˜ Linuxç³» perfã«ã¤ã„ã¦ ã‚«ãƒ¼ãƒãƒ«å†…ã®ã‚¤ãƒ™ãƒ³ãƒˆã‚„ã€ãƒãƒ¼ãƒ‰ã‚¦ã‚§ã‚¢ã‚¤ãƒ™ãƒ³ãƒˆã®ç™ºç”Ÿå›žæ•°ã‚’è¨ˆæ¸¬ã§ãã‚‹ãƒ„ãƒ¼ãƒ«ã€‚ ã‚¤ãƒ³ã‚¹ãƒˆãƒ¼ãƒ« 2.6.31 ã‹ã‚‰ã¯ã‚«ãƒ¼ãƒãƒ«ã«æ¨™æº–æè¼‰ã•ã‚Œã¦ã‚‹ã®ã§ã€ç‰¹ã«å¿…è¦ãªã‚‚ã®ã¯ç„¡ã„ã€‚ ã‚„ã‚‹ã“ã¨ã¯ã€ ã‚«ãƒ¼ãƒãƒ«ã®CONFIG_PERF_COUNTERSã‚’æœ‰åŠ¹ã«ã™ã‚‹ ã‚«ãƒ¼ãƒãƒ«ã‚’ãƒ“ãƒ«ãƒ‰ ãªã‚“ã‚‰ã‹ã®æ‰‹æ®µã§elfutilsã®libelfã‚’å…¥ã‚Œã‚‹(libelf-0.8.12ã§ã¯ãªã„) ã‚«ãƒ¼ãƒãƒ«ã‚½ãƒ¼ã‚¹å†…ã«ã‚ã‚‹ tools/perf/ ã§ make ã™ã‚‹ ã§ããŸ'perf'ã‚³ãƒžãƒ³ãƒ‰ã‚’ãƒ‘ã‚¹ã®é€šã‚‹ã¨ã“ã‚ã«ç½®ã debugfsã‚’/sys/kernel/debugã«ãƒžã‚¦ãƒ³ãƒˆã™ã‚‹ ã§ã€$ perf list ãªã©ã¨ã‚„ã£ã¦ã€ã‚¤ãƒ™ãƒ³ãƒˆãƒªã‚¹ãƒˆãŒè¡¨ç¤ºã•ã‚Œã‚Œã°ä½¿ãˆã‚‹ ä½¿ã„ã‹ãŸ ãƒžãƒ‹ãƒ¥ã‚¢ãƒ«ã¯ tools/perf/Documenta
pulltop-birth 2012/07/07
Linux

optimization
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çµµã§è¦‹ã‚‹ãƒšã‚¢ãƒªãƒ³ã‚° - melancholic afternoon
pulltop-birth 2012/06/18
optimization
ãƒªãƒ³ã‚¯
A x86-optimized rank&select dictionary for bit sequences
The document summarizes a technique for efficiently performing rank and select operations on bit sequences using succinct data structures. It describes splitting the bit sequence into blocks of logarithmic size and precomputing total count values (stored in arrays L and S) to allow rank and select to be performed in O(log N) time using only o(N) extra space, where N is the length of the bit sequen
pulltop-birth 2012/06/16
data structure

optimization
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Quick Search algorithm and strstr
The document discusses and benchmarks various string search algorithms, including Quick Search, strstr, and a custom implementation using SSE4.2 instructions. It finds that for short substrings, strstr in GCC utilizing SSE4.2 performs best, while for longer substrings, a modified Quick Search algorithm is faster. The author's own implementation using pcmpestri outperforms all other algorithms, bei
pulltop-birth 2012/04/01
algorithm

optimization
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GCC -mtune ä½•ã‚„ã£ã¦ã‚‹ã‹
æ¦‚è¦ gcc -mtune=hoge ã£ã¦ã‚ã‚“ã¾ã‚ˆãã‚ã‹ã‚‰ãšä»˜ã‘ã¦ã‚‹ã‘ã©æ„å‘³ã‚ã‚“ã®ï¼Ÿ åŠ¹æžœ å‰ã®k10 vs coremaã¿ãŸã„ãªæ„Ÿã˜ã§parsecã‚’ã²ã¨ã¨ãŠã‚Šå‹•ã‹ã—ãŸ -O2 ã®æ™‚é–“ã‚’1.0ã¨ã—ãŸæ™‚ã®å‡¦ç†æ™‚é–“ã®æ¯” app |-O2 -mtune-native streamcluster | 1.016 canneal | 1.016 vips | 0.954 bodytrack | 0.966 x264 | 1.049 blackscholes | 0.986 swaptions | 0.981 ferret | 0.997 ãªã‚“ã‚‰ã‹ã®åŠ¹æžœãŒã‚ã‚‹â€¦ã‚ˆã†ã«è¦‹ãˆã‚‹â€¦ï¼Ÿ (ãƒã‚¿ãƒãƒ¬: -march=avxãŒä»˜ã„ã¦ã¦ã€ãã‚Œã®åŠ¹æžœãŒå‡ºã¦ã„ã‚‹) è¶…ç°¡å˜ã«GCCã®ã‚³ãƒ¼ãƒ‰è§£èª¬ gcc/*.c ã‚¢ãƒ¼ã‚éžä¾å˜ã®ã‚³ãƒ¼ãƒ‰ gcc/config/i386/* i386ã®ã‚³ãƒ¼ãƒ‰ gcc/config/i386/i3
pulltop-birth 2012/03/31
optimization
ãƒªãƒ³ã‚¯
Software optimization resources. C++ and assembly. Windows, Linux, BSD, Mac OS X
See also my blog Contents Optimization manuals Vector class library Object file converter and disassem bler Subroutine library ForwardCom: An open standard instruction set for high performance microprocessors Test programs for measuring clock cycles in C++ and assem bly code Floating point exception tracking and NaN propagation CPUID manipulation program Links Optimization manuals This series of fiv
pulltop-birth 2011/11/14
optimization
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é›‘è«‡
pulltop-birth 2011/11/14
optimization
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http://hardmeter.osdn.jp/pmc_xeon.txt
pulltop-birth 2011/11/11
optimization
ãƒªãƒ³ã‚¯
CPUã‚¯ãƒãƒƒã‚¯ã«åŸºã¥ãç›¸å¯¾æ™‚åˆ»ã®è¨ˆæ¸¬
[ C++ã§é–‹ç™º ] CPUã‚¯ãƒãƒƒã‚¯ã«åŸºã¥ãç›¸å¯¾æ™‚åˆ»ã®è¨ˆæ¸¬ CPUã®ã‚¯ãƒãƒƒã‚¯ã«åŸºã¥ãé›»æºONã‹ã‚‰ã®ç›¸å¯¾æ™‚åˆ»ã‚’å–å¾—ã™ã‚‹æ–¹æ³•ã‚’èª¿æŸ»ã—è¨˜è¿°ã—ã¾ã™ã€‚æœ€è¿‘ã®CPUã¯ã€ã‚¯ãƒãƒƒã‚¯ã«å¾“ã£ã¦ã‚«ã‚¦ãƒ³ãƒˆã‚¢ãƒƒãƒ—ã™ã‚‹ãƒ¬ã‚¸ã‚¹ã‚¿ã‚’ä¿æŒã—ã¦ã„ã‚‹ã®ã§ã€ã“ã®ãƒ¬ã‚¸ã‚¹ã‚¿ã®å€¤ã‚’èªã¿å‡ºã™ã“ã¨ã§CPUãŒèµ·å‹•ã—ã¦ã‹ã‚‰ã®ã‚¯ãƒãƒƒã‚¯æ•°ã‚’å–å¾—ã™ã‚‹ã“ã¨ãŒã§ãã¾ã™ã€‚ä¾‹ãˆã°1GHzã®å‹•ä½œå‘¨æ³¢æ•°ã®CPUã§ã‚ã‚Œã°ã€åˆ†è§£èƒ½ã¯1nsï¼ˆãƒŠãƒŽç§’ï¼‰ã¨ãªã‚Šã¾ã™ã€‚éžå¸¸ã«é«˜ç²¾åº¦ãªåˆ†è§£èƒ½ã§ã™ã€‚ 2012-09-22 TSCã®ç¨®é¡žã«ã¤ã„ã¦è¿½è¨˜ RDTSCPå‘½ä»¤ã«ã¤ã„ã¦è¿½è¨˜ VisualC++ã®ã‚³ãƒ³ãƒ‘ã‚¤ãƒ©çµ„ã¿è¾¼ã¿é–¢æ•°__rdtsc/__rdtscpã«ã¤ã„ã¦è¿½è¨˜ Intel x86ç³»CPU RDTSC CPUå‘½ä»¤ã‚’ç›´æŽ¥åˆ©ç”¨ Intel x86ç³»ã®CPUï¼ˆAMDã®Athlonç‰ã‚‚å«ã‚€ï¼‰ã§ã¯ã€CPUã‚¯ãƒãƒƒã‚¯ã”ã¨ã«åŠ ç®—ã•ã‚Œã‚‹64bitã®ã‚¿ã‚¤ãƒ ã‚¹ã‚¿ãƒ³ãƒ—ã‚«ã‚¦ãƒ³ã‚¿ï¼ˆIA32_TIME_ST
pulltop-birth 2011/11/11
optimization
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x86/x64æœ€é©åŒ–å‹‰å¼·ä¼š2çµ‚äº†
pulltop-birth 2011/10/02
optimization
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