積読日記

■ [work] 邪悪なグローバル変数の退治

コードに蔓延るグローバル変数を退治する準備に取り掛かった. subversion のブランチを作ってしばらくそこにこもって作業しようと思ったが, 目の前に汚いコードがあったのでそっちの整理に取り掛かってしまった.

■ [computer] 関数型指数心理テスト

0.1 ちょっとだった. 正確な結果をとり損ねたのでまた時間のあるときにでも再挑戦しよう.

■ [software] Firefox 3

早速入れた. いくつか対応していないアドオンがあったので代替を探してきた.

• FireGestures: AllinOneGestures から乗り換えた.
• Foxmarks: google browser sync が 3 に対応しないようなので乗り換えた.

■ [book] 野獣の都 〔永遠の戦士 ケイン〕, Michael Moorcock (著), 矢野 徹 (訳), ハヤカワ文庫 SF

読み終わった. 新シリーズよりも素朴で読みやすかった.

■ [programming] NUMA

NUMA (Non-Uniform Memory Access) の資料をまとめた. 手持ちの環境では NUMA の node が一つしかなかった. これでも NUMA の効果は実感できるのかなと思って AMD のデモを動かしてみた.

Allocate one big chunk of memory
  and set loose per-thread affinity before touching memory:
done loop= 8, ptr=08FE2000, mask= 3, thread=1, MB/sec=2754, 581 msec.
done loop= 9, ptr=09F24400, mask= 3, thread=1, MB/sec=2685, 596 msec.
done loop= 0, ptr=015D0000, mask= 3, thread=0, MB/sec=1113, 1437 msec.
done loop=10, ptr=0AE66800, mask= 3, thread=1, MB/sec=2812, 569 msec.
done loop=11, ptr=0BDA8C00, mask= 3, thread=1, MB/sec=2410, 664 msec.
done loop= 1, ptr=02512400, mask= 3, thread=0, MB/sec=1101, 1453 msec.
done loop=12, ptr=0CCEB000, mask= 3, thread=1, MB/sec=2619, 611 msec.
done loop=13, ptr=0DC2D400, mask= 3, thread=1, MB/sec=2645, 605 msec.
done loop=14, ptr=0EB6F800, mask= 3, thread=1, MB/sec=2740, 584 msec.
done loop= 2, ptr=03454800, mask= 3, thread=0, MB/sec=1085, 1474 msec.
done loop=15, ptr=0FAB1C00, mask= 3, thread=1, MB/sec=2730, 586 msec.
done loop= 3, ptr=04396C00, mask= 3, thread=0, MB/sec=2083, 768 msec.
done loop= 4, ptr=052D9000, mask= 3, thread=0, MB/sec=3893, 411 msec.
done loop= 5, ptr=0621B400, mask= 3, thread=0, MB/sec=4061, 394 msec.
done loop= 6, ptr=0715D800, mask= 3, thread=0, MB/sec=3791, 422 msec.
done loop= 7, ptr=0809FC00, mask= 3, thread=0, MB/sec=4134, 387 msec.
Done.  Total time = 6.98

Access the data with per-thread allocated memory
done loop= 8, ptr=02520000, mask= 3, thread=1, MB/sec=2703, 592 msec.
done loop= 9, ptr=02520000, mask= 3, thread=1, MB/sec=3206, 499 msec.
done loop= 0, ptr=015D0000, mask= 3, thread=0, MB/sec=1171, 1366 msec.
done loop=10, ptr=02520000, mask= 3, thread=1, MB/sec=2899, 552 msec.
done loop=11, ptr=02520000, mask= 3, thread=1, MB/sec=2947, 543 msec.
done loop= 1, ptr=015D0000, mask= 3, thread=0, MB/sec=1210, 1322 msec.
done loop=12, ptr=02520000, mask= 3, thread=1, MB/sec=3113, 514 msec.
done loop=13, ptr=02520000, mask= 3, thread=1, MB/sec=2952, 542 msec.
done loop=14, ptr=02520000, mask= 3, thread=1, MB/sec=3048, 525 msec.
done loop= 2, ptr=015D0000, mask= 3, thread=0, MB/sec=1198, 1336 msec.
done loop=15, ptr=02520000, mask= 3, thread=1, MB/sec=2980, 537 msec.
done loop= 3, ptr=015D0000, mask= 3, thread=0, MB/sec=1896, 844 msec.
done loop= 4, ptr=015D0000, mask= 3, thread=0, MB/sec=3636, 440 msec.
done loop= 5, ptr=015D0000, mask= 3, thread=0, MB/sec=4113, 389 msec.
done loop= 6, ptr=015D0000, mask= 3, thread=0, MB/sec=3563, 449 msec.
done loop= 7, ptr=015D0000, mask= 3, thread=0, MB/sec=4082, 392 msec.
Done.  Total time = 6.79

Use the standard Windows thread APIs instead, and set affinity:
done loop= 0, ptr=11C50000, mask= 3, thread=0, MB/sec=1606, 996 msec.
done loop= 1, ptr=10D00000, mask= 3, thread=1, MB/sec=2716, 589 msec.
done loop= 2, ptr=11C50000, mask= 3, thread=0, MB/sec=1641, 975 msec.
done loop= 3, ptr=10D00000, mask= 3, thread=1, MB/sec=2920, 548 msec.
done loop= 4, ptr=11C50000, mask= 3, thread=0, MB/sec=1700, 941 msec.
done loop= 5, ptr=10D00000, mask= 3, thread=1, MB/sec=2773, 577 msec.
done loop= 6, ptr=11C50000, mask= 3, thread=0, MB/sec=1598, 1001 msec.
done loop= 7, ptr=10D00000, mask= 3, thread=1, MB/sec=2837, 564 msec.
done loop= 8, ptr=11C50000, mask= 3, thread=0, MB/sec=1602, 999 msec.
done loop= 9, ptr=10D00000, mask= 3, thread=1, MB/sec=2610, 613 msec.
done loop=10, ptr=11C50000, mask= 3, thread=0, MB/sec=1610, 994 msec.
done loop=11, ptr=10D00000, mask= 3, thread=1, MB/sec=2787, 574 msec.
done loop=12, ptr=11C50000, mask= 3, thread=0, MB/sec=1576, 1015 msec.
done loop=13, ptr=10D00000, mask= 3, thread=1, MB/sec=2735, 585 msec.
done loop=14, ptr=11C50000, mask= 3, thread=0, MB/sec=1653, 968 msec.
done loop=15, ptr=10D00000, mask= 3, thread=1, MB/sec=2925, 547 msec.
Done.  Total time = 8.06

■ [book] マロリオン物語 (3) マーゴスの王, David Eddings (著), 宇佐川 晶子 (訳), ハヤカワFT文庫

読み終えた.