{"id":29275522,"url":"https://github.com/vdutor/picograd","last_synced_at":"2026-02-03T12:33:48.411Z","repository":{"id":81726353,"uuid":"430506056","full_name":"vdutor/picograd","owner":"vdutor","description":"Minimal Automatic Differentiation Engine in Julia. Inspired by micrograd.","archived":false,"fork":false,"pushed_at":"2021-11-21T23:55:41.000Z","size":3,"stargazers_count":0,"open_issues_count":0,"forks_count":0,"subscribers_count":1,"default_branch":"master","last_synced_at":"2025-07-05T06:11:46.502Z","etag":null,"topics":[],"latest_commit_sha":null,"homepage":null,"language":"Julia","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":null,"status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/vdutor.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":null,"code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null,"zenodo":null}},"created_at":"2021-11-21T23:32:40.000Z","updated_at":"2021-11-21T23:55:44.000Z","dependencies_parsed_at":"2023-03-10T16:00:18.973Z","dependency_job_id":null,"html_url":"https://github.com/vdutor/picograd","commit_stats":null,"previous_names":[],"tags_count":0,"template":false,"template_full_name":null,"purl":"pkg:github/vdutor/picograd","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/vdutor%2Fpicograd","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/vdutor%2Fpicograd/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/vdutor%2Fpicograd/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/vdutor%2Fpicograd/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/vdutor","download_url":"https://codeload.github.com/vdutor/picograd/tar.gz/refs/heads/master","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/vdutor%2Fpicograd/sbom","scorecard":null,"host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":286080680,"owners_count":29045944,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2026-02-03T10:09:22.136Z","status":"ssl_error","status_checked_at":"2026-02-03T10:09:16.814Z","response_time":96,"last_error":"SSL_connect returned=1 errno=0 peeraddr=140.82.121.6:443 state=error: unexpected eof while reading","robots_txt_status":"success","robots_txt_updated_at":"2025-07-24T06:49:26.215Z","robots_txt_url":"https://github.com/robots.txt","online":false,"can_crawl_api":true,"host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":[],"created_at":"2025-07-05T06:11:07.253Z","updated_at":"2026-02-03T12:33:48.402Z","avatar_url":"https://github.com/vdutor.png","language":"Julia","funding_links":[],"categories":[],"sub_categories":[],"readme":"# PicoGrad\n\nA minimal auto-differentiation (AD) engine written in Julia. The soul purpose of the project is to learn how AD and Julia works. Inspired by Karpathy's [micrograd](https://github.com/karpathy/micrograd).\n\n\nExample\n```julia\ninclude(\"src/ADEngine.jl\")\nusing .ADEngine: Node, backward, relu\n\na = Node(-4.0)\nb = Node(2.0)\nc = a + b\nd = a * b + b^3\nc += c + 1\nc += 1 + c + (-a)\nd += d * 2 + relu(b + a)\nd += 3 * d + relu(b - a)\ne = c - d\nf = e^2\ng = f / 2.0\ng += 10.0 / f\nprintln(\"$(g.data)\")  # prints 24.7041, the outcome of this forward pass\n@assert g.data ≈ 24.70408163265306\nbackward(g)\nprintln(\"$(a.grad)\") # prints 138.8338, i.e. the numerical value of dg/da\n@assert a.grad ≈ 138.83381924198252\nprintln(\"$(b.grad)\") # prints 645.5773, i.e. the numerical value of dg/db\n@assert b.grad ≈ 645.5772594752187\n```","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fvdutor%2Fpicograd","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fvdutor%2Fpicograd","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fvdutor%2Fpicograd/lists"}