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Non-functional system requirements emphasize reuse of existing software, hybrid local/HPC computing, reviewable “show our work” results, low cost, easy modification, uninterrupted operations, and long-running execution for statistically significant outputs.",{"@graph":14,"@context":73},[15,34,56],{"@type":16,"itemListElement":17},"BreadcrumbList",[18,23,27,31],{"item":19,"name":20,"@type":21,"position":22},"https://docshare.wps.com","Home","ListItem",1,{"item":24,"name":25,"@type":21,"position":26},"https://docshare.wps.com/document/","Document",2,{"item":28,"name":29,"@type":21,"position":30},"https://docshare.wps.com/document/research-report/","Research & Report",3,{"item":32,"name":10,"@type":21,"position":33},"https://docshare.wps.com/document/southern-california-earthquake-center-cism-development-plan-system-requirements/202509/",4,{"url":32,"name":10,"@type":35,"image":36,"author":41,"headline":10,"publisher":44,"fileFormat":47,"inLanguage":8,"description":12,"dateModified":48,"datePublished":49,"encodingFormat":47,"isAccessibleForFree":50,"interactionStatistic":51},"DigitalDocument",{"url":37,"@type":38,"width":39,"height":40},"https://docshare.wps.com/thumbnails/southern-california-earthquake-center-cism-development-plan-system-requirements/202509.png","ImageObject",300,407,{"name":42,"@type":43},"Eliana","Person",{"url":19,"name":45,"@type":46},"DocShare","Organization","application/pdf","2026-11-06","2026-09-04",true,{"@type":52,"interactionType":53,"userInteractionCount":55},"InteractionCounter",{"@type":54},"ViewAction",16,{"@type":57,"mainEntity":58},"FAQPage",[59,65,69],{"name":60,"@type":61,"acceptedAnswer":62},"What are the main CISM use cases across Years 1–3?","Question",{"text":63,"@type":64},"Year 1 couples UCERF rupture forecasts with CyberShake models and adds computational tools for rupture and ground-motion simulators. Year 2 couples RSQSim with CyberShake and calibrates/tests the resulting forecasting models. Year 3 builds a long-term HPC environment and submits exemplars to CSEP for prospective testing.","Answer",{"name":66,"@type":61,"acceptedAnswer":67},"What non-functional system requirements guide the CISM design?",{"text":68,"@type":64},"CISM must reuse existing scientific software, support local and external high-performance parallel computing, produce repeatable and reviewable results, remain inexpensive to run and maintain, be easy to modify without major re-implementation or downtime, allow new development without disrupting operations, and run for years to obtain statistically significant results.",{"name":70,"@type":61,"acceptedAnswer":71},"How does the modular processing architecture support CISM forecasts?",{"text":72,"@type":64},"It defines a staged workflow: define a rupture catalog, calculate rupture ground motions, assign rupture probabilities, and combine them to forecast probabilistic future ground motions. This modular structure supports extensibility and evaluation of alternative methods.","https://schema.org",{"og:url":32,"og:type":75,"og:title":10,"og:site_name":45,"og:description":12},"article",{"robots":77,"canonical":32},"index,follow",{"doc_id":79,"site_id":7},202509,1788547566,{"code":4,"msg":82,"data":83},"success",[84,88,92,96,101,106,111,115,120,123,127],{"id":22,"doc_module":4,"doc_module_name":25,"category_name":85,"show_sort_weight":86,"slug":87},"Story & Novel",90,"story-novel",{"id":26,"doc_module":4,"doc_module_name":25,"category_name":89,"show_sort_weight":90,"slug":91},"Literature",80,"literature",{"id":33,"doc_module":4,"doc_module_name":25,"category_name":93,"show_sort_weight":94,"slug":95},"Exam",70,"exam",{"id":97,"doc_module":4,"doc_module_name":25,"category_name":98,"show_sort_weight":99,"slug":100},5,"Comic",60,"comic",{"id":102,"doc_module":4,"doc_module_name":25,"category_name":103,"show_sort_weight":104,"slug":105},6,"Technology",50,"technology",{"id":107,"doc_module":4,"doc_module_name":25,"category_name":108,"show_sort_weight":109,"slug":110},7,"Healthcare",40,"healthcare",{"id":112,"doc_module":4,"doc_module_name":25,"category_name":29,"show_sort_weight":113,"slug":114},8,30,"research-report",{"id":116,"doc_module":4,"doc_module_name":25,"category_name":117,"show_sort_weight":118,"slug":119},9,"Religion & Spirituality",20,"religion-spirituality",{"id":118,"doc_module":4,"doc_module_name":25,"category_name":121,"show_sort_weight":118,"slug":122},"World Cup","world-cup",{"id":124,"doc_module":4,"doc_module_name":25,"category_name":125,"show_sort_weight":124,"slug":126},10,"Lifestyle","lifestyle",{"id":128,"doc_module":4,"doc_module_name":25,"category_name":129,"show_sort_weight":97,"slug":130},19,"General","general",{"code":4,"msg":82,"data":132},{"doc_id":79,"user_id":133,"nickname":42,"user_avatar":134,"doc_module":4,"category_id":112,"category_name":29,"doc_title":10,"doc_description":12,"doc_content":135,"file_id":136,"file_url":137,"file_type":138,"file_size":139,"view_count":55,"is_deleted":4,"is_public":22,"is_downloadable":22,"audit_status":22,"page_count":140,"language":141,"language_code":8,"site_id":7,"html_lang":8,"table_of_contents":142,"faqs":143,"seo_title":144,"seo_description":12,"update_tm":80,"read_time":99,"preview_page_count":4},4398048949847,"https://ap-avatar.wpscdn.com/avatar/400002536579ef2da7f?_k=1778318612642679267","Southern California Earthquake Center  \nSCEC Collaboratory for Interseismic Simulation and  \nModeling (CISM) Infrastructure  \nPhilip J. Maechling (SCEC)  \nSeptember 13, 2015  \nSouthern California Earthquake Center  \nCISM Development Plan  \n• System Requirements  \n• System Architecture  \n• Computing Environment  \n• Essential Software Components  \n• Computational and Data Estimates  \n• Software Development Process  \n• IP Considerations  \nSouthern California Earthquake Center  \nUse Cases in CISM Proposal  \nYear 1:  \n• Couple the empirical Uniform California Earthquake Rupture Forecast to the CyberShake ground-motion forecasting models of the Los Angeles region.  \n• Provide new computational tools to assist the development of rupture simulators such as RSQSim and ground-motion simulators such as CyberShake.  \nYear 2:  \n• Couple the RSQSim physics-based rupture simulator to the CyberShake ground-motion forecasting models  \n• Retrospectively calibrate and test the resulting comprehensive forecasting models.  \nYear 3:  \n• Construct a computational environment that can sustain the long-term development of comprehensive, physics-based earthquake forecasting models  \n• Submitted exemplars to CSEP for prospective testing against observed earthquake activity in California.  \nSouthern California Earthquake Center  \nAdditional CISM System Requirements  \nCISM designed to meet several non-functional requirements:  \n1. Use existing scientific software written in a variety of programming languages  \n2. Use local computing resources and high-performance parallel computing resources from external resource providers  \n3. Be able to “show our work” to support scientific review of results.  \n4. Be inexpensive to design, build, maintain, and operate  \n5. Be easy to modify without significant re-implementation or down time.  \n6. Support new development without impacting ongoing operations  \n7. Run for years to get statistically significant results  \nSouthern California Earthquake Center  \nCISM Development Plan  \n• System Requirements  \n• System Architecture  \n• Computing Environment  \n• Essential Software Components  \n• Computational and Data Estimates  \n• Software Development Process  \n• IP Considerations  \nSouthern California Earthquake Center  \nCISM Modular Processing Architecture  \n\n| Define Rupture Catalog\u003Cbr>Define list of possible earthquakes for region of Interest during period of interest |  | \u003Cbr>Calculate Rupture Ground Motions\u003Cbr>Calculate ground motions produced by each rupture in region of interest\u003Cbr>|  | \u003Cbr> Assign Rupture Probabilities\u003Cbr>Assign a probability to each rupture in catalog during period of interest |  | \u003Cbr> Forecast Future Ground Motions\u003Cbr>Combine ground motions with probabilities to produce probabilistic ground motion forecast | |\n| --- | --- | --- | --- | --- | --- | --- | --- |\n|  |  |  |  |  |  |  |  |\n|  |  |  |  |  |  |  |  |\n\nBuild a modular, extensible, distributed, high performance computing framework:  \n1. Define and execute a multi-stage series of scientific calculations  \n2. Execute calculations on external resources and return results to SCEC  \n3. Modularize construction to enable evaluation of multiple alternative methods  \n4. Ensure repeatable and reviewable results  \n* We will use a workflow-based distributed computing framework developed on SCEC HPC Projects  \nSouthern California Earthquake Center  \nCISM Modular Processing Architecture  \n\n| Define Rupture Catalog\u003Cbr>Define list of possible earthquakes for region of Interest during period of interest |  | \u003Cbr>Calculate Rupture Ground Motions\u003Cbr>Calculate ground motions produced by each rupture in region of interest\u003Cbr>|  | \u003Cbr> Assign Rupture Probabilities\u003Cbr>Assign a probability to each rupture in catalog during period of interest |  | \u003Cbr> Forecast Future Ground Motions\u003Cbr>Combine ground motions with probabilities to produce probabilistic ground motion forecast | |\n| --- | --- | --- | --- | --- | --- | --- | --- |\n|  |  |  |  |  |  |  |  |\n|  |  |  | ","cbCair2DdqRJAMtz","https://ap.wps.com/l/cbCair2DdqRJAMtz","pdf",1013257,24,"English","# Use Cases in CISM Proposal\n## Year 1\n## Year 2\n## Year 3\n# Additional CISM System Requirements\n## Non-functional Requirements\n# CISM Development Plan\n## System Requirements\n## System Architecture\n## Computing Environment\n## Essential Software Components\n## Computational and Data Estimates\n## Software Development Process\n## IP Considerations\n# CISM Modular Processing Architecture\n## Define Rupture Catalog\n## Calculate Rupture Ground Motions\n## Assign Rupture Probabilities\n## Forecast Future Ground Motions\n# Workflow-Oriented System Implementation\n## Abstract Workflows\n## Concrete Workflows","[{\"question\":\"What are the main CISM use cases across Years 1–3?\",\"answer\":\"Year 1 couples UCERF rupture forecasts with CyberShake models and adds computational tools for rupture and ground-motion simulators. Year 2 couples RSQSim with CyberShake and calibrates/tests the resulting forecasting models. Year 3 builds a long-term HPC environment and submits exemplars to CSEP for prospective testing.\"},{\"question\":\"What non-functional system requirements guide the CISM design?\",\"answer\":\"CISM must reuse existing scientific software, support local and external high-performance parallel computing, produce repeatable and reviewable results, remain inexpensive to run and maintain, be easy to modify without major re-implementation or downtime, allow new development without disrupting operations, and run for years to obtain statistically significant results.\"},{\"question\":\"How does the modular processing architecture support CISM forecasts?\",\"answer\":\"It defines a staged workflow: define a rupture catalog, calculate rupture ground motions, assign rupture probabilities, and combine them to forecast probabilistic future ground motions. This modular structure supports extensibility and evaluation of alternative methods.\"}]","Southern California Earthquake Center - CISM Development Plan - System Requirements | PDF"]