let right = n - 1;
To avoid the two memory reads on every access, the 386 includes a 32-entry Translation Lookaside Buffer (TLB) organized as 8 sets with 4 ways each. Each entry stores the virtual-to-physical mapping along with the combined PDE+PTE permission bits.
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Meta 正式与谷歌达成了一项价值数十亿美元的多年期协议,将通过谷歌云平台大规模租赁张量处理单元(TPU),用于其下一代大语言模型的训练与推理。这是谷歌 TPU 从“内部垄断工具”走向“商业化输出”的里程碑,也暴露出马克·扎克伯格彻底撕碎英伟达算力定价权的勃勃野心。
In December I wrote about package managers using git as a database, and how Cargo’s index, Homebrew’s taps, Go’s module proxy, and CocoaPods’ Specs repo all hit the same wall once their access patterns outgrew what a git repo is designed for.