{"id":19706125,"url":"https://github.com/llnl/simutil","last_synced_at":"2025-08-26T07:09:19.855Z","repository":{"id":66083020,"uuid":"159381238","full_name":"LLNL/simutil","owner":"LLNL","description":"Simulation Utility Library for HPC codes","archived":false,"fork":false,"pushed_at":"2021-10-19T18:41:01.000Z","size":102,"stargazers_count":1,"open_issues_count":0,"forks_count":1,"subscribers_count":3,"default_branch":"master","last_synced_at":"2025-04-12T05:03:44.051Z","etag":null,"topics":["hpc","simulation"],"latest_commit_sha":null,"homepage":null,"language":"C","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/LLNL.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}},"created_at":"2018-11-27T18:30:42.000Z","updated_at":"2021-10-19T18:41:04.000Z","dependencies_parsed_at":"2023-09-24T16:56:39.370Z","dependency_job_id":null,"html_url":"https://github.com/LLNL/simutil","commit_stats":{"total_commits":21,"total_committers":5,"mean_commits":4.2,"dds":"0.47619047619047616","last_synced_commit":"dbc1640abb5fe22a902e49fcf88335ec9718cec0"},"previous_names":[],"tags_count":0,"template":false,"template_full_name":null,"purl":"pkg:github/LLNL/simutil","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/LLNL%2Fsimutil","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/LLNL%2Fsimutil/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/LLNL%2Fsimutil/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/LLNL%2Fsimutil/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/LLNL","download_url":"https://codeload.github.com/LLNL/simutil/tar.gz/refs/heads/master","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/LLNL%2Fsimutil/sbom","scorecard":null,"host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":272187107,"owners_count":24888510,"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","status":"online","status_checked_at":"2025-08-26T02:00:07.904Z","response_time":60,"last_error":null,"robots_txt_status":"success","robots_txt_updated_at":"2025-07-24T06:49:26.215Z","robots_txt_url":"https://github.com/robots.txt","online":true,"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":["hpc","simulation"],"created_at":"2024-11-11T21:34:15.507Z","updated_at":"2025-08-26T07:09:19.833Z","avatar_url":"https://github.com/LLNL.png","language":"C","funding_links":[],"categories":[],"sub_categories":[],"readme":"# SimUtil\n\nSimUtil is a utility library that makes it easy to quickly create new\nHigh Performance Computing projects for scientific applications. The\nlibrary has proven to scale to over a million concurrent processes and\nhas been used in multiple Gordon Bell submissions and finalist codes.\n\nThe library features routines for\n\n* MPI-aware hierarchical input deck processing\n* Unit parsing and dimensional analysis\n* PIO output file formats that scale to millions of processors\n* Other miscellaneous routines commonly needed in HPC scientific codes.\n \n\n## Requirements\n\nSimUtil only depends on C99 and MPI.  The build system requires CMake\nand [BLT](https://github.com/LLNL/blt), unless you wish to replace our\nbuild system with your own.\n\n## Getting Started\n\nWe recommend placing SimUtil directly in your build tree using\n```git subtree```:\n\n    git subtree add --prefix=simutil https://github.com/llnl/simutil.git master\n\nFrom here, it is a simple matter to integrate SimUtil with your\nexisting build system\n\n### Using CMake + BLT\n\nThe recommended way to include SimUtil in your library is through\n[BLT](https://github.com/LLNL/blt). Include BLT as another subtree:\n\n    git subtree add --prefix=blt https://github.com/LLNL/blt.git master\n\nThen, place the following lines in your top level CMakeLists.txt:\n\n    if (NOT BLT_LOADED)\n       include(${CMAKE_CURRENT_SOURCE_DIR}/blt/SetupBLT.cmake)\n    endif()\n\n    add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/simutil/src)\n\n### Using a regular Makefile\n\nSymlink `include/*.h` and `src/*.c` to the directory of your choice\nand add these files to your makefile.  You also want add the following\nflags:\n\n    CFLAGS += -DDiff_Weight_Type_Single -DWITH_PIO -DWITH_MPI\n\n\n## Contributing\n\nPlease submit any bugfixes or feature improvements as [pull\nrequests](https://help.github.com/articles/using-pull-requests/).\n\nAuthors\n----------------\n\nMany thanks go to SimUtil's\n[contributors](https://github.com/llnl/simutil/graphs/contributors).\n\n* James P Glosli\n* Tomas Oppelstrup\n* Shiv Sundram\n* Xiaohua Zhang\n* David F Richards\n* Robert Blake\n* Michael P Surh\n* Fred Streitz\n\nLicense\n----------------\n\nSimutil is distributed under the terms of both the MIT license. All\nnew contributions must be made under this license.\n\nSee [LICENSE](https://github.com/llnl/simutil/blob/master/LICENSE) and\n[NOTICE](https://github.com/llnl/simutil/blob/master/NOTICE) for\ndetails.\n\n`SPDX-License-Identifier: (MIT)`\n\n``LLNL-CODE-762538``\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fllnl%2Fsimutil","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fllnl%2Fsimutil","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fllnl%2Fsimutil/lists"}