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| * ''nick:'', SSE math lib - Replace instances of sin, cos, log and exp with routines optimized for SSE instructions found on intel processors. See http://gruntthepeon.free.fr/ssemath/. Tried this, but ran into problems and gave up. Some wrangling with it could make it possible to optionally build with this lib via #ifdefs. | * ''nick:'', SSE math lib - Replace instances of sin, cos, log and exp with routines optimized for SSE instructions found on intel processors. See http://gruntthepeon.free.fr/ssemath/. Tried this, but ran into problems and gave up. Some wrangling with it could make it possible to optionally build with this lib via #ifdefs. Actually, its not a lib but a header file. |
Notes on FreeSurfer code optimization
This page is for free-form entry of notes on ways to optimize the freesurfer code base, whether they be simple things, or notes on larger scale problems.
Format is: name:, <short label> - description
* nick:, -ffast-math - Try the -ffast-math flag of gcc v4.x. Prior experiments with this on the AMD compiler showed output differences in recon-all, but perhaps selective use of this flag is possible.
* nick:, SSE math lib - Replace instances of sin, cos, log and exp with routines optimized for SSE instructions found on intel processors. See http://gruntthepeon.free.fr/ssemath/. Tried this, but ran into problems and gave up. Some wrangling with it could make it possible to optionally build with this lib via #ifdefs. Actually, its not a lib but a header file.