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).

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

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