--- title: llm.c | daily.dev description: Andrej Karpathy implements LLM training in just over 1,000 lines of C on top of CUDA. Includes a tutorial about implementing LayerNorm by porting an... canonical: https://daily.dev/posts/llm-c-glquhouu1 twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: llm.c | daily.dev og:description: Andrej Karpathy implements LLM training in just over 1,000 lines of C on top of CUDA. Includes a tutorial about implementing LayerNorm by porting an... og:url: https://daily.dev/posts/llm-c-glquhouu1 og:image: https://api.daily.dev/og/posts/GlquHOuU1.png og:image:alt: llm.c og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # llm.c **[Simon Willison](https://daily.dev/sources/simonwillison)** · 1 min read · 4 upvotes · 0 comments ## Summary Andrej Karpathy implements LLM training in just over 1,000 lines of C on top of CUDA. Includes a tutorial about implementing LayerNorm by porting an implementation from Python. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: --- Tags: [#c](https://daily.dev/tags/c), [#cuda](https://daily.dev/tags/cuda), [#nlp](https://daily.dev/tags/nlp), [#python](https://daily.dev/tags/python) [View this post on daily.dev](https://daily.dev/posts/llm-c-glquhouu1) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"llm.c","url":"https://daily.dev/posts/llm-c-glquhouu1","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/llm-c-glquhouu1"},"datePublished":"2024-04-09T15:36:33.510Z","dateModified":"2024-08-30T02:20:00.379Z","description":"Andrej Karpathy implements LLM training in just over 1,000 lines of C on top of CUDA. Includes a tutorial about implementing LayerNorm by porting an...","image":"https://media.daily.dev/image/upload/s--OHB84bZF--/f_auto/v1722860399/public/Placeholder%2010","thumbnailUrl":"https://media.daily.dev/image/upload/s--OHB84bZF--/f_auto/v1722860399/public/Placeholder%2010","isAccessibleForFree":true,"articleSection":"Simon Willison","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Simon Willison","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/cf12b897300740218b35f49a6309ec5b","url":"https://daily.dev/sources/simonwillison"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/llm-c-glquhouu1","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":4},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"c,cuda,nlp,python","timeRequired":"PT1M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Simon Willison","item":"https://daily.dev/sources/simonwillison"},{"@type":"ListItem","position":3,"name":"llm.c"}]} ```