{"slug": "show-hn-optimized-cuda-forced-alignment-kernels-10x-1000x-faster", "title": "Show HN: Optimized CUDA forced alignment kernels. 10x – 1000x faster", "summary": "Developer Bryan Thornbury released optimized CUDA forced-alignment kernels via GitHub (brthor/fast-forced-aligner) and a blog post, reporting speeds 10x to 1000x faster than popular open-source options, including the torchaudio implementations he previously used. Thornbury built the kernels to accelerate his own forced-alignment pipelines using Astra and published them for others to use.", "body_md": "blog post: [https://www.bryanthornbury.com/posts/fast-forced-alignment](https://www.bryanthornbury.com/posts/fast-forced-alignment)\n\ngithub: [https://github.com/brthor/fast-forced-aligner](https://github.com/brthor/fast-forced-aligner)\n\nI developed optimized CUDA kernels to speed up my forced alignment pipelines using Astra.\n\nTo my surprise, I was able to achieve speeds 10x - 1000x faster than popular existing open source options, including the torchaudio implementations I was using before.\n\nI'm sharing them for anyone else who finds them useful.\n\nThe acceleration from AI is getting wild.\n\nComments URL: [https://news.ycombinator.com/item?id=50310134](https://news.ycombinator.com/item?id=50310134)\n\nPoints: 1\n\n# Comments: 0", "url": "https://wpnews.pro/news/show-hn-optimized-cuda-forced-alignment-kernels-10x-1000x-faster", "canonical_source": "https://github.com/brthor/fast-forced-aligner", "published_at": "2026-10-30 21:06:35+00:00", "updated_at": "2026-10-30 21:16:46.690320+00:00", "lang": "en", "topics": ["ai-tools", "developer-tools", "natural-language-processing", "ai-infrastructure"], "entities": ["Bryan Thornbury", "Astra", "torchaudio", "GitHub", "fast-forced-aligner"], "also_reported_by": [], "alternates": {"html": "https://wpnews.pro/news/show-hn-optimized-cuda-forced-alignment-kernels-10x-1000x-faster", "markdown": "https://wpnews.pro/news/show-hn-optimized-cuda-forced-alignment-kernels-10x-1000x-faster.md", "text": "https://wpnews.pro/news/show-hn-optimized-cuda-forced-alignment-kernels-10x-1000x-faster.txt", "jsonld": "https://wpnews.pro/news/show-hn-optimized-cuda-forced-alignment-kernels-10x-1000x-faster.jsonld"}}