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DTSTART:19700308T020000
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DTSTAMP:20181221T160725Z
LOCATION:D171
DTSTART;TZID=America/Chicago:20181111T103000
DTEND;TZID=America/Chicago:20181111T104500
UID:submissions.supercomputing.org_SC18_sess167_ws_rescue101@linklings.com
SUMMARY:Assessing Reproducibility: An Astrophysical Example of Computation
 al Uncertainty in the HPC Context
DESCRIPTION:Workshop\nReproducibility, Software Engineering, Workflows, Wo
 rkshop Reg Pass\n\nAssessing Reproducibility: An Astrophysical Example of 
 Computational Uncertainty in the HPC Context\n\nStodden, Krafczyk\n\nWe pr
 esent an experiment using the Enzo simulation code on NCSA's Blue Waters s
 ystem to highlight the importance of computational and numerical uncertain
 ty in scientific computing on HPC systems. We quantify the (surprising) va
 riability of outputs from 200 identical simulation runs. We make two recom
 mendations to improve the assessment of reproducibility of computational r
 esults: the inclusion of computational variability measures in standard re
 porting practices; and modular software designs that permit localized asse
 ssments of the source of computational uncertainty.
URL:https://sc18.supercomputing.org/presentation/?id=ws_rescue101&sess=ses
 s167
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