{"id":21643951,"url":"https://github.com/application-research/fastcommp","last_synced_at":"2025-08-25T07:11:57.805Z","repository":{"id":154984319,"uuid":"620618300","full_name":"application-research/fastcommp","owner":"application-research","description":"Filecoin fast piece commitment summation tool","archived":false,"fork":false,"pushed_at":"2023-06-05T16:32:25.000Z","size":74,"stargazers_count":1,"open_issues_count":0,"forks_count":2,"subscribers_count":1,"default_branch":"main","last_synced_at":"2025-01-25T04:11:13.230Z","etag":null,"topics":[],"latest_commit_sha":null,"homepage":"","language":"Go","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"mit","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/application-research.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":"LICENSE","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}},"created_at":"2023-03-29T03:18:15.000Z","updated_at":"2023-04-25T14:49:31.000Z","dependencies_parsed_at":null,"dependency_job_id":"6d285f0c-8b99-4a0c-9f2c-e4b02afe6a2d","html_url":"https://github.com/application-research/fastcommp","commit_stats":null,"previous_names":[],"tags_count":1,"template":false,"template_full_name":null,"repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/application-research%2Ffastcommp","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/application-research%2Ffastcommp/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/application-research%2Ffastcommp/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/application-research%2Ffastcommp/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/application-research","download_url":"https://codeload.github.com/application-research/fastcommp/tar.gz/refs/heads/main","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":244394463,"owners_count":20445634,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2022-07-04T15:15:14.044Z","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":"2024-11-25T05:37:04.830Z","updated_at":"2025-03-19T08:47:47.205Z","avatar_url":"https://github.com/application-research.png","language":"Go","funding_links":[],"categories":[],"sub_categories":[],"readme":"# fastcommp\n\nFilecoin fast piece commitment summation tool.\n\n# usage\n\n```go\npackage main\n\nimport (\n    \"fmt\"\n    \"github.com/application-research/fastcommp\"\n)\n\nfunc main() {\n    fast := new(fastcommp.CommpWriter)\n    fast.Write(data)\n    sum, err := fast.Sum()\n    if err != nil {\n        panic(err)\n    }\n    fmt.Printf(\"commP: %s\\n\", sum.PieceCID.String())\n}\n```\n\n# build\n\n`make build`\n\n# execute\n\n`./fastcommp \u003ccarfile.car\u003e`\n\n## optional: create car dummy data\n\n1. create an 8 GiB test file\n\n`\ndd if=/dev/urandom of=8G-payload.bin bs=1M count=8192\n`\n\n2. car it up with `https://github.com/ipld/go-car` (install with `go install github.com/ipld/go-car/cmd/car@latest`)\n\n`\ncar c --version 1 -f 8G-payload.bin.car 8G-payload.bin\n`\n# benchmarks\n\n\u003cimg width=\"955\" alt=\"Screenshot 2023-04-25 at 4 41 58 PM\" src=\"https://user-images.githubusercontent.com/1556714/234313247-56e573e6-107d-4606-8de6-379a92a613e9.png\"\u003e\n* benchmarks run on optimized AMD hardware with ~1TB available memory\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fapplication-research%2Ffastcommp","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fapplication-research%2Ffastcommp","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fapplication-research%2Ffastcommp/lists"}