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performance difference between jit.submatrix & jit.matrix @usesrcdim 1?

August 18, 2008 | 12:41 pm

I’m curious if there is any benefit to using a matrix with @usesrcdim
1 (named or otherwise) vs jit.submatrix.

I vaguely remember a question along these lines from a few years ago
but I can’t find it in the archives.

if it makes a difference, these would ultimately be a few levels deep.

Thanks.
~s

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August 18, 2008 | 3:40 pm

no experience here to relate, but this sounds like a perfect case for a quick speed test.


August 24, 2008 | 9:00 pm


jit.matrix seems at least 3 times more fast than jit.submatrix, see by yourself:

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