| [eigen-commits] commit/eigen: ggael: Speedup PartialPivLU for small matrices by passing compile-time sizes when available. |
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- To: eigen-commits@xxxxxxxxxxxxxxxxxxx
- Subject: [eigen-commits] commit/eigen: ggael: Speedup PartialPivLU for small matrices by passing compile-time sizes when available.
- From: Bitbucket <commits-noreply@xxxxxxxxxxxxx>
- Date: Mon, 11 Feb 2019 12:59:40 +0000 (UTC)
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1 new commit in eigen:
https://bitbucket.org/eigen/eigen/commits/f6e0f72dbf0a/
Changeset: f6e0f72dbf0a
User: ggael
Date: 2019-02-11 12:58:24+00:00
Summary: Speedup PartialPivLU for small matrices by passing compile-time sizes when available.
This change set also makes a better use of Map<>+OuterStride and Ref<> yielding surprising speed up for small dynamic sizes as well.
The table below reports times in micro seconds for 10 random matrices:
| ------ float --------- | ------- double ------- |
size | before after ratio | before after ratio |
fixed 1 | 0.34 0.11 2.93 | 0.35 0.11 3.06 |
fixed 2 | 0.81 0.24 3.38 | 0.91 0.25 3.60 |
fixed 3 | 1.49 0.49 3.04 | 1.68 0.55 3.01 |
fixed 4 | 2.31 0.70 3.28 | 2.45 1.08 2.27 |
fixed 5 | 3.49 1.11 3.13 | 3.84 2.24 1.71 |
fixed 6 | 4.76 1.64 2.88 | 4.87 2.84 1.71 |
dyn 1 | 0.50 0.40 1.23 | 0.51 0.40 1.26 |
dyn 2 | 1.08 0.85 1.27 | 1.04 0.69 1.49 |
dyn 3 | 1.76 1.26 1.40 | 1.84 1.14 1.60 |
dyn 4 | 2.57 1.75 1.46 | 2.67 1.66 1.60 |
dyn 5 | 3.80 2.64 1.43 | 4.00 2.48 1.61 |
dyn 6 | 5.06 3.43 1.47 | 5.15 3.21 1.60 |
Affected #: 1 file
Repository URL: https://bitbucket.org/eigen/eigen/
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