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一个存在的世界

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一个存在的世界

https://developers.redhat.com/articles/2024/12/11/making-memcpynull-null-0-well-defined#

Red Hat Developer

Making memcpy(NULL, NULL, 0) well-defined | Red Hat Developer

Undefined behavior (UB) in the C programming language is a regular source of heated discussions among programmers. On the one hand, UB can be important for compiler optimizations. On the other hand,

131 viewsMiao Wu, edited 14:21

一个存在的世界

一个存在的世界

https://docs.redhat.com/zh-cn/documentation/red_hat_enterprise_linux/8/html/monitoring_and_managing_system_status_and_performance/sampling-memory-access-with-perf-mem_profiling-memory-accesses-with-perf-mem#sampling-memory-access-with-perf-mem_profiling-memory…

https://developer.arm.com/documentation/ka005362/latest/

167 viewsMiao Wu, 03:56

一个存在的世界

https://docs.redhat.com/zh-cn/documentation/red_hat_enterprise_linux/8/html/monitoring_and_managing_system_status_and_performance/sampling-memory-access-with-perf-mem_profiling-memory-accesses-with-perf-mem#sampling-memory-access-with-perf-mem_profiling-memory-accesses-with-perf-mem

25.2. 使用 perf mem 抽样内存访问 | Red Hat Product Documentation

25.2. 使用 perf mem 抽样内存访问 | Red Hat Documentation

160 viewsMiao Wu, 03:54

一个存在的世界

https://swarm.ptsecurity.com/new-dog-old-tricks-damagecard-attack-targets-memory-directly-thru-sd-card-reader/

New dog, old tricks: DaMAgeCard attack targets memory directly thru SD card reader

Did I ever tell you what the definition of insanity is? Insanity is doing the exact… same ******* thing… over and over again expecting… **** to change… That. Is. Crazy.Far Cry 3 Intro The peripheral device industry has once again sacrificed security in the…

247 viewsMiao Wu, 08:28

一个存在的世界

https://lwn.net/Articles/1001215/ Abusing Git branch names to compromise a PyPI package

664 viewsMiao Wu, 06:51

一个存在的世界

https://rust-gpu.github.io/blog/optimizing-matmul/ 好久没碰 rust-gpu，现在已经是 spirv 的模样了

rust-gpu.github.io

Optimizing a Rust GPU matmul kernel | Rust GPU

I read the excellent post [Optimizing a WebGPU Matmul Kernel for 1TFLOP+

317 viewsMiao Wu, 07:51

一个存在的世界

GitHub 怎么把大模型对话放主页了

333 viewsMiao Wu, 23:53

一个存在的世界

Forwarded from Easton Man's Channel (Easton Meow | 已经没什么好怕的了)

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317 viewsMiao Wu, 01:32

一个存在的世界

https://zed.dev/blog/zed-decoded-rope-optimizations-part-1

Rope Optimizations, Part 1

From the Zed Blog: In this episode of Zed Decoded, Thorsten and Antonio walk through the performance optimizations Antonio when working on Zed's Rope data structure before they then pair on adding more optimizations

475 viewsMiao Wu, 01:22

一个存在的世界

https://blog.frost.kiwi/analytical-anti-aliasing/

blog.frost.kiwi

AAA - Analytical Anti-Aliasing

How to fix jaggies the analytical way with some juicy secrets

437 viewsMiao Wu, 16:27

一个存在的世界

https://chipsandcheese.com/p/sc24-the-top500-video 终于变了

Supercomputing 2024: El Capitan, MI300A, and More on the Fastest Supercomputers!

There's a new Number One for the 64th TOP500 list

393 viewsMiao Wu, 15:05

一个存在的世界

https://blog.cyyself.name/ccmp-aarch64/

452 viewsMiao Wu, 04:18

一个存在的世界

https://naehrdine.blogspot.com/2024/11/reverse-engineering-ios-18-inactivity.html

Reverse Engineering iOS 18 Inactivity Reboot

Wireless and firmware hacking, PhD life, Technology

525 viewsMiao Wu, 02:10

一个存在的世界

https://blog.tal.bi/posts/c23-bitint/ Arbitrary-sized Integers in C23

1.3K viewsMiao Wu, edited 03:20

一个存在的世界

https://github.com/zed-industries/zed/issues/16969 怎么还有这种自动加后缀的bug

Zed adds .s to my SQL files · Issue #16969 · zed-industries/zed

Check for existing issues Completed Describe the bug / provide steps to reproduce it Whenever I save a file a name it e.g. test.sql, zed saves it as test.sql.s without notifying me. I have no optio...

589 viewsMiao Wu, 14:01

一个存在的世界

一个存在的世界

https://www.phoronix.com/news/Intel-Linux-3888.9-Performance 难道说之前升级内核以后 EPYC 7001 跑benchmark性能低了16%是这么来的？先前的Bug Report：https://bugzilla.suse.com/show_bug.cgi?id=1229012 升级内核前后的benchmark对比：https://github.com/jiegec/blog-source/commit/b41b6d5317f5fe00908…

这个问题在ARM64的设备上也有类似的表现：https://github.com/jiegec/blog-source/commit/e88455df6b343d0d58ac05e98da1a85f110c2e41
等升级6.12内核再重测吧。。此外新内核的deepsjeng_r反而变慢了，虽然慢的不多，对最终的分数影响比较小。

Rerun xelite with THP bug fixed, got performance increase in bwaves/c… · jiegec/blog-source@e88455d

…actuBSSN/fotonik3d/roms

491 viewsMiao Wu, edited 12:08

一个存在的世界

https://labs.leaningtech.com/blog/webvm-20

Leaning Technologies Developer Hub

WebVM 2.0: A complete Linux Desktop Environment in the browser via WebAssembly

WebVM is a full Linux environment running in the browser, client-side. It is a complete virtual machine, with support for persistent data storage, networking and, as of today’s release, Xorg and complete desktop environments.

This article will explain the…

1.7K viewsMiao Wu, 11:14

一个存在的世界

https://mp.weixin.qq.com/s/fcr_1mfDCmFD9gKqn23qxQ

Weixin Official Accounts Platform

春节和劳动节各增1天！2025年放假安排来了

367 viewsMiao Wu, 09:41

一个存在的世界

https://ttimo.typepad.com/blog/2024/11/the-steam-client-update-earlier-this-week-mentions-fixed-some-miscellaneous-common-crashes-in-the-linux-notes-which-i-wante.html

Improving Steam Client stability on Linux: setenv and multithreaded environments

The Steam client update on November 5th mentions "Fixed some miscellaneous common crashes." in the Linux notes, which I wanted to give a bit of background on. There's more than one fix that made it in under the somewhat generic header, but the one change…

522 viewsMiao Wu, 02:23

一个存在的世界

https://cdimage.debian.org/cdimage/ports/snapshots/2024-11-11/ very first installation image for debian-ports loong64 available

501 viewsMiao Wu, 17:25