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DTSTART;TZID=America/Chicago:20251117T110000
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UID:submissions.supercomputing.org_SC25_sess198_ws_pmbsf106@linklings.com
SUMMARY:Beyond Guess and Check: Quantifying the Fidelity of Proxy Applicat
 ions
DESCRIPTION:Si Chen (Emory University); Simon Garcia de Gonzalo, Omar Aazi
 z, and Jeanine Cook (Sandia National Laboratories); and Avani Wildani (Clo
 udflare)\n\nProxy applications are targeted submodels of larger parent app
 lications, designed to represent key characteristics such as the programmi
 ng model, memory usage, or communication behaviors. \n\nProxy applications
  are valuable for system design and optimization, offering a more manageab
 le and privacy-preserving alternative to analyzing the parent application,
  as long as they accurately capture the core characteristics. \n\nCreating
  and maintaining this proxy-parent relationship has been challenging witho
 ut a consistent means of quantifying proxy fidelity. We address this chall
 enge with Calder, a robust algorithmic toolkit to characterize similaritie
 s in HPC application behavior. \n\nCalder leverages similarity algorithms 
 to compare application behaviors and uses Laplacian scores with a correlat
 ion filter to identify the most important application features.\n\nWe vali
 date Calder's similarity results using proxy applications for kernel behav
 ior, network counters, and cross-platform performance. Using the selected 
 features, we show that 75\% of the proxies in our suite demonstrate highly
  convergent behavior with their parents.\n\nRecording: Livestreamed, Recor
 ded\n\nRegistration Category: Technical Program Reg Pass, Workshop Reg Pas
 s\n\nSession Chairs: Steven A. Wright (University of York, England); Simon
  Hammond (National Nuclear Security Administration (NNSA)); and Sascha Hun
 old (Technical University of Vienna)\n\n
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