Bug 71 - Optimize diagonal products even more
Optimize diagonal products even more
Status: RESOLVED FIXED
Product: Eigen
Classification: Unclassified
Component: Core - general
unspecified
All All
: --- Unknown
Assigned To: Gael Guennebaud
:
Depends on:
Blocks: 3.2
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Reported: 2010-10-16 04:58 UTC by Benoit Jacob
Modified: 2013-06-18 18:57 UTC (History)
2 users (show)



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Description Benoit Jacob 2010-10-16 04:58:23 UTC
There are still room for better vectorization, e.g., v0.asDiagonal() * v1 is not vectorized while it is simply v0.cwiseProduct(v1);
Comment 1 Gael Guennebaud 2013-06-18 17:46:36 UTC
Its better now:

https://bitbucket.org/eigen/eigen/commits/6687ef43d300/
Changeset:   6687ef43d300
User:        ggael
Date:        2013-06-18 17:44:25
Summary:     Bug 71: enable vectorization of diagonal products in more cases.

but I think we can even do better with matrices, so let's keep it open.
Comment 2 Gael Guennebaud 2013-06-18 18:57:57 UTC
OK, the problem with matrices is much more general, so let's close this one and start another one.

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