Lessons From Parallelizing Matrix Multiplication

Posted by nreece on Tuesday December 15, 2009 @03:41AM
from the softwareengineering.vazexqi.com dept.

http://softwareengineering.vazexqi.com/2009/11/23/lessons-from-parallelizing-matrix-multiplication

( 3 comments | 47 points | on HN )

Re:Lessons From Parallelizing Matrix Multiplication by kebaman on Tuesday December 15, 2009 @11:29AM (#996769)

Am I having a dumb attack? His smarter version ends up multiplying row x row instead of row x column. Doesn't this produce an incorrect result?

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Re:Lessons From Parallelizing Matrix Multiplication by scdlbx on Tuesday December 15, 2009 @01:07PM (#996994)

The multiply itself is not being changed. Rather, the order in which the elements in the matrices are being multiplied is changed. The results will be the same.

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Re:Lessons From Parallelizing Matrix Multiplication by frevd on Tuesday December 15, 2009 @05:32PM (#997615)

thx for the link appearing last in the article about parallel computing patterns, quite a good wiki.

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