How Good Are Performance Metrics for Parallel Applications?

This week, I am attending a Software Sustainability conference in Cardiff, Wales, so my blog post today will be brief.  I have often wondered about all the claims and counter claims for performance specifications for parallel applications.  If you are interested in this topic, I can recommend an article on the International Science Grid This Week web page.  The article, Inflated Performance, is by turns insightful and trenchant, and gives a fine overview on, e.g.,  how to interpret performance speed-up claimed when researchers port from CPU’s to GPU’s (the speedup is real, but often only because parts of the code had to be rewritten).

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This entry was posted in astroinformatics, cyberinfrastructure, High performance computing, Parallelization and tagged , , , . Bookmark the permalink.

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