Research and Development
As well as providing production computing services NERSC also participates in research and development activities in order to ensure the high performance computing systems of the future continue to meet the needs of scientists.
KNL's MCDRAM cache is prone to cache thrashing, which can be detrimental to application performance and performance reproducibility. NERSC initiated and led a Center of Excellence, including participants from Cray, Intel, ACES and ALCF, to minimize cache thrashing on Cori. These efforts improved the average performance of some benchmark tests by 2x. This page summarizes the results from the COE and provides guidance to users about how to minimize this issue for their applications. … Read More »