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Forum: Version 2.2.11: an updated SIMD release which is 2x faster!

Posted by: Joachim Stadel
Date: 2010-10-28 08:41
Summary:Version 2.2.11: an updated SIMD release which is 2x faster!
Project:pkdgrav2: a parallel n-body gravity code

This release version uses SIMD (SSE or Altivec) instructions now for multipoles and also to evaluate the opening criteria. The resulting code is now 2x as fast at the same accuracy. Previously we only used SIMD to evaluate the particle-particle interactions and could not do the same for multipole interactions. New formulae allowing so called "scaled multipoles" to be used (release 2.2.10) paved the way for this full SIMD version. This completes a certain development theme and there will not be a next release till late december. You can see what things we are working on from the link "Next Release" under the Task Manager. - Joachim
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