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A comment on Why physicists still use Fortran. Parent comment

Re:Why physicists still use Fortran by bmh100 on Sunday December 18, 2016 @10:14PM (#13209291)
What made your work so dependent upon memory bandwidth?
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Re:Why physicists still use Fortran by greglindahl on Sunday December 18, 2016 @11:52PM (#13209554)
As an introduction, you might want to look into John McCalpin's history as a shallow-water oceanographer and his subsequent fixation on the STREAM benchmark. TL;DR: some algorithms aren't friendly to caching.

I have no idea if this applies to smarnach, but it definitely applies to other people.

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Re:Why physicists still use Fortran by jabl on Monday December 19, 2016 @03:43AM (#13210276)
John McCalpin did a nice presentation at SC16 giving an overview of memory BW/latency issues in HPC, slides: http://sites.utexas.edu/jdm4372/2016/11/22/sc16-invited-talk...
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