テスト的な投稿

IEEE 754規格についてのインタビュー記事

But DEC’s original double precision `D’ format had the same eight exponent bits as had its single precision `F’ format. This exponent range had turned out too narrow for some double precision computations. DEC reacted by introducing its `G’ double precision format with an 11 bit exponent that had served well enough in CDC’s 6600/7600 machines for over a decade; K-C-S had chosen that exponent range too for its double precision.

“K-C-S”とは最終的に754規格として採用されたもののドラフト。

コードのはりつけ

codeblcok

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#!/bin/zsh
echo "$(pwd -P)/intel/libintelocl.so" >| OpenCL/intelocl64.icd

backtick

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#!/bin/zsh
echo "$(pwd -P)/intel/libintelocl.so" >| OpenCL/intelocl64.icd

どっちも同じか。

OpenCLでのBulldozer(8 core)とSandybridge(6 core)の性能比較

AMDとIntelのSDKをそれぞれのCPUで比較した。 BulldozerはFX-8150(8 core)。SandybridgeはCore i7 3960X(6 core)。

• BulldozerではAMDのSDKのほうが速い
• SandybridgeではIntelのSDKのほうが速い
• Tahiti最強

markdownの概略

http://ja.wikipedia.org/wiki/Markdown