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topology

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bgoglin
bgoglin commented Nov 18, 2020

We currently try to open /sys/devices/system/cpu/cpuX/cache/indexY/shared_cpu_map for every PU and Y between 0 and 9. That's usually 6 useless syscalls per PU since most CPUs have 4 caches per PU. That's almost 1ms per PU.

Linux numbers caches from 0 to N-1 internally but some of them might get skip when added to sysfs for some reasons (see cache_add_dev() in drivers/base/cacheinfo.c). That mea

mather

zzllrr mather(an offline tool for Math learning, education and research)小乐数学,离线可用的数学学习(自学或教学)、研究辅助工具。计划覆盖数学全部学科的解题、作图、演示、探索工具箱。目前是演示Demo版(抛转引玉),但已经支持数学公式编辑显示,部分作图功能,部分学科,如线性代数、离散数学的部分解题功能。最终目标是推动专业数学家、编程专家、教育工作者、科普工作者共同打造出更加专业级的Mather数学工具

  • Updated Jul 6, 2021
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