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<strong>Meeting summary for DesignSafe NHERI Monthly Meetings (03/21/2025)</strong>
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<strong>Quick recap</strong>
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Frank discussed his efforts to rewrite the backend for improved efficiency and his concerns about potential impacts on other users. He also shared his experiences working at tech and universities and discussed issues with the file transfer system. Tim and Frank also discussed the performance of various applications, the need for a detailed proposal for their project, and the process of creating a configuration management document for their project.
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<strong>Next steps</strong>
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• Frank to follow up with the contact person regarding the Bay Area test bed performance issues.
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• Frank to investigate potential solutions for the library linking problem causing slowdowns on compute nodes.
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• Tim to catch up on the Tapis file transfer issue and see what's going on.
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• Tim to add Vista time allocation for Frank's account.
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• Frank and team to start working on the Work Breakdown Structure (WBS) for the upcoming proposal.
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• Frank and team to prepare a configuration management document for SimCenter software instead of a traditional state-of-the-art report.
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• Tim and team to continue developing the detailed configuration document for DesignSafe.
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<strong>Summary</strong>
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<strong>Improving Backend Efficiency and Virtual Memory</strong>
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Frank discusses his efforts to rewrite the backend for improved efficiency, focusing on running large jobs using the Bay Area test bed. He reports that running 35,000 buildings on multiple nodes resulted in a 50% slowdown compared to using a single node. Frank suspects the issue may be related to library dependencies not being duplicated on compute nodes. He has successfully run 1.4 million buildings but is concerned about potential impacts on other users. Frank also mentions rewriting the code to manage virtual memory usage due to SSD space limitations on the nodes.
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<strong>Tech and University Work Experiences</strong>
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Tim and Frank discussed their experiences working at tech and universities. Tim mentioned that Frank's colleague, Heal, is a valuable resource due to his extensive experience and proactive approach. Frank shared his story of starting at a university with a lower salary than offered, but eventually reaching the initial offer after 20 years. They also discussed the challenges they face with open phone and the importance of finishing tasks within the given time limit.
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<strong>Tapis File Transfer System Issues</strong>
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Frank and Tim discussed issues with the file transfer system, particularly with Tapis, which was causing job failures due to timing out and not moving files back to the work directory. They also discussed the load balancer, which was slowing down the file transfer process. Tim mentioned that some of the team members have retired, including Rich Cardone. Frank mentioned that he has a presentation on Monday about running large simulations for a regional earthquake simulation.
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<strong>GPU Performance and Testing Discussion</strong>
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Tim and Frank discussed the performance of various applications and the potential of new GPUs. They mentioned the Intel GPUs, Pontevecchios, and the H100s and H200s on Stampede 3 and Vista. Frank expressed interest in testing the Vista environment and compiling OpenSeas. Tim offered to provide Frank with some Vista time for testing.
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<strong>WBS Proposal and Government Shutdown</strong>
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Tim and Frank discussed the need for a detailed proposal for their project, with a focus on the Work Breakdown Structure (WBS). They also discussed the possibility of a government shutdown and its potential impact on their project. Tim mentioned that they had a meeting with Joy, who suggested that they should have proposals ready to go by summer. They also discussed the need for a state of the art report, which they decided to replace with an annual configuration document. Frank mentioned that they were overdue for their report and that it would be more about what Simcenter actually does rather than what's new.
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<strong>Configuration Management Document Creation Process</strong>
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Tim and Frank discuss the process of creating a configuration management document for their project. Tim explains that they started the document for a cybersecurity review and now need to add more detail. The document serves multiple purposes, including potential competition preparation and improving internal understanding of the system. Tim finds the process valuable for identifying desired changes in DesignSafe. They also briefly discuss Frank's resource allocation on Stampede 3, confirming he has ample resources remaining for his upcoming work.
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