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FFmpeg Devs Boast of Up To 94x Performance Boost After Implementing Handwritten AVX-512 Assembly Code

Anton Shilov reports via Tom's Hardware: FFmpeg is an open-source video decoding project developed by volunteers who contribute to its codebase, fix bugs, and add new features. The project is led by a small group of core developers and maintainers who oversee its direction and ensure that contributions meet certain standards. They coordinate the project's development and release cycles, merging contributions from other developers. This group of developers tried to implement a handwritten AVX512 assembly code path, something that has rarely been done before, at least not in the video industry. The developers have created an optimized code path using the AVX-512 instruction set to accelerate specific functions within the FFmpeg multimedia processing library. By leveraging AVX-512, they were able to achieve significant performance improvements -- from three to 94 times faster -- compared to standard implementations. AVX-512 enables processing large chunks of data in parallel using 512-bit registers, which can handle up to 16 single-precision FLOPS or 8 double-precision FLOPS in one operation. This optimization is ideal for compute-heavy tasks in general, but in the case of video and image processing in particular. The benchmarking results show that the new handwritten AVX-512 code path performs considerably faster than other implementations, including baseline C code and lower SIMD instruction sets like AVX2 and SSSE3. In some cases, the revamped AVX-512 codepath achieves a speedup of nearly 94 times over the baseline, highlighting the efficiency of hand-optimized assembly code for AVX-512.

Read more of this story at Slashdot.




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TSMC Halts Advanced Chip Shipments To Chinese AI Companies

Starting November 11, TSMC plans to stop supplying 7 nm and smaller chips to Chinese companies working on AI processors and GPUs. "The move is reportedly to ensure it remains compliant with US export restrictions," reports The Register. From the report: This will not affect Chinese customers wanting 7 nm chips from TSMC for other applications such as mobile and communications, according to Nikkei, which said the overall impact on the chipmaker's revenue is likely to be minimal. TrendForce further cites another China-based source who claims the move was at the behest of the US Department of Commerce, which informed TSMC that any such shipments should not proceed unless approved and licensed by its BIS (Bureau of Industry and Security). We asked the agency for confirmation. Any moves by the silicon supremo is likely to be out of caution to pre-empt accusations from Washington that it isn't doing enough to prevent advanced technology from getting into the hands of Chinese entities that have been sanctioned. As TrendForce notes, it "highlights the foundry giant's delicate position in the global semiconductor supply chain amid the heating chip war between the world's two superpowers."

Read more of this story at Slashdot.





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At 30 years old, is Ruby in a mid-life crisis or a renaissance?


Ruby’s creator, Yukihiro Matsumoto (Matz), released the first public version of the programming language in December 1995, making Ruby just shy of its 30th birthday. It spread across Japanese-language Usenet newsgroups, a popular way of exchanging conversation and media before the World Wide Web, and then reached broader communities throughout the late 1990s. This was thanks to Ruby’s friendly community and, in no small part, thanks to Matz. (The community has a motto, “Matz is nice, and so we are nice.”) At this year’s annual European Ruby Konferenze — EuRoKu — in Sarajevo, Matz said he created Ruby because he…

This story continues at The Next Web



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