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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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visionOS 2.2 Beta Adds Wide and Ultrawide Modes To Mac Virtual Display

Apple released the first beta of visionOS 2.2, introducing new "Wide" and "Ultrawide" modes for the Mac Virtual Display feature on the Vision Pro headset. MacRumors reports: Apple has previously said the ultra-wide version of Mac Virtual Display is equivalent to having two physical 4K displays sitting side by side on a desk. Mac Virtual Display is now available in three sizes: Normal, Wide, and Ultrawide. visionOS 2.2 will likely be released to the public in December alongside iOS 18.2, iPadOS 18.2, macOS Sequoia 15.2, watchOS 11.2, tvOS 18.2, and other updates. Further reading: Apple Delays Cut-price Vision Headset Until 2027, Analyst Ming-Chi Kuo Says

Read more of this story at Slashdot.




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How Samsung Fell Behind in the AI Boom - and Lost $126 Billion in Market Value

After missing a chance to capitalize on the AI boom, "Samsung's profit has plunged," reports CNBC, and "around $126 billion has been wiped off its market value, according to data from S&P Capital IQ." It's gotten so bad that "an executive issued a rare public apology about the company's recent financial performance." [A]s AI applications such as OpenAI's ChatGPT rose in popularity, the underlying infrastructure required to train the huge models they rely on became a bigger focus. Nvidia has emerged as the top player in this space with its graphics processing units (GPUs) that have become the gold standard used by tech giants for AI training. A crucial part of that semiconductor architecture is high-bandwidth memory, or HBM. This next generation of memory involves stacking multiple dynamic random access memory (DRAM) chips, but it had a small market before the AI boom. That's where Samsung got caught out and failed to invest... SK Hynix saw this opportunity. The company aggressively launched HBM chips which were approved for use in Nvidia architecture and, in the process, the South Korean firm established a close relationship with the U.S. giant. Nvidia's CEO even asked the company to speed up supply of its next generation chip, underscoring the importance of HBM to its products. SK Hynix posted record quarterly operating profit in the September quarter... Analysts said that Samsung is lagging behind competitors for a number of reasons, including underinvestment in HBM and the fact that it is not a first-mover. "It is fair to say that Samsung has not been able to close the gap with SK Hynix on the HBM development roadmap," said Kazunori Ito [director of equity research at Morningstar]. Samsung's ability to make a comeback in the short term appears to be closely linked to Nvidia. A company must pass a strict qualification process before Nvidia approves it as a HBM supplier — and Samsung has not yet completed this verification. But a green light from Nvidia could open the door for Samsung to return to growth and compete more effectively with SK Hynix, according to analysts.

Read more of this story at Slashdot.




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Cuba's Power Grid Collapses Again After Second Hurricane. And Then an Earthquake Hit

Wednesday Cuba was hit by a major hurricane which took down its entire power grid again, this time for about 24 hours, according to CNN: Videos of the aftermath showed power infrastructure turned into a mangled mess and power poles down on streets. Hundreds of technicians were mobilized Thursday to reestablish power connections, according to state media... Operations at two electrical plants were partially restored and parts of eastern and central Cuba had electricity back up by Thursday afternoon, state media reported... The country's power grid has collapsed multiple times, including when Hurricane Oscar hit in October and killed at least 7 people. In the capital of Havana, where 2 million people live, power had been restored to less than 20% of the city by late Friday afternoon, . "Authorities had not yet given an estimate for when power would be fully restored..." Then tonight, CNN reported: A 6.8 magnitude earthquake struck off the coast of eastern Cuba on Sunday, causing material damage in several regions as the island continues to recover from widespread blackouts and the impact of two hurricanes over the past few weeks. The earthquake was reported about 39 km (24 miles) south of Bartolomé Masó before noon local time, about an hour after a 5.9 magnitude quake rocked the area, the United States Geological Survey (USGS) said. "There have been landslides, damage to homes and power lines," Cuban President Miguel Díaz-Canel said, adding that authorities are evaluating the situation to start recovery efforts.

Read more of this story at Slashdot.








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Why learning 10 programming languages doesn’t make you a more interesting job candidate


New data from LinkedIn on the most in-demand jobs on the platform in the third quarter of this year reveals that software engineering is in second place. Just pipped to the post by sales roles, it is clear that software engineering and development pros are in high demand. Additionally, full stack engineers and application developers feature in the top ten in-demand roles at places eight and ten respectively. Software roles are in such high prominence because software powers pretty much everything. According to McKinsey, these days, “Every company is a software company.” Traditional bricks and mortar businesses are now increasingly…

This story continues at The Next Web




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