Benoit Steiner
8afce86e64
Added support for RowMajor layout to the image patch extraction code
...
Speeded up the unsupported_cxx11_tensor_image_patch test and reduced its memory footprint
2015-02-25 09:48:54 -08:00
Benoit Jacob
692136350b
So I extensively measured the impact of the offset in this prefetch. I tried offset values from 0 to 128 (on this float* pointer, so implicitly times 4 bytes).
...
On x86, I tested a Sandy Bridge with AVX with 12M cache and a Haswell with AVX+FMA with 6M cache on MatrixXf sizes up to 2400.
I could not see any significant impact of this offset.
On Nexus 5, the offset has a slight effect: values around 32 (times sizeof float) are worst. Anything else is the same: the current 64 (8*pk), or... 0.
So let's just go with 0!
Note that we needed a fix anyway for not accounting for the value of RhsProgress. 0 nicely avoids the issue altogether!
2015-02-25 12:37:14 -05:00
Christoph Hertzberg
531fa9de77
bug #970 : Add EIGEN_DEVICE_FUNC to RValue functions, in case Cuda supports RValue-references.
2015-02-24 21:03:28 +01:00
Benoit Jacob
26275b250a
Fix my recent prefetch changes:
...
- the first prefetch is actually harmful on Haswell with FMA,
but it is the most beneficial on ARM.
- the second prefetch... I was very stupid and multiplied by sizeof(scalar)
and offset of a scalar* pointer. The old offset was 64; pk = 8, so 64=pk*8.
So this effectively restores the older offset. Actually, there were
two prefetches here, one with offset 48 and one with offset 64. I could not
confirm any benefit from this strange 48 offset on either the haswell or
my ARM device.
2015-02-23 16:55:17 -05:00
Benoit Jacob
488874781b
Add analyze-blocking-sizes program under bench/ to analyze multiple logs
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generated by benchmark-blocking-sizes.
2015-02-23 14:02:29 -05:00
Christoph Hertzberg
052b6b40f1
Fix two trivial warnings
2015-02-22 12:40:51 +01:00
Christoph Hertzberg
ecbf2a6656
log1p is defined only for real Scalars in C++11
2015-02-21 19:58:24 +01:00
Christoph Hertzberg
6af6cf0c2e
I can reproduce any problems that justified this hack. However it makes builds fail in C++11 mode.
2015-02-21 19:43:56 +01:00
Gael Guennebaud
3cf642baa3
Fix compilation of unit tests disabling assertion cheking
2015-02-21 14:13:48 +01:00
Benoit Jacob
458cf91cd9
Add benchmark-blocking-sizes.cpp to bench/ per mailing list discussion.
2015-02-20 17:08:04 -05:00
Gael Guennebaud
03ec601ff7
Initial version of a small script to help tracking performance regressions
2015-02-20 19:20:34 +01:00
Gael Guennebaud
333b497383
update bench_gemm
2015-02-20 11:59:49 +01:00
Gael Guennebaud
2da1594750
Fix doc of Ref<>
2015-02-20 11:52:22 +01:00
Gael Guennebaud
01b8440579
With C++11 Matrix<float> + Matrix<complex<float>> does not even compile
2015-02-20 09:32:49 +01:00
Gael Guennebaud
3594451ee0
Remove EIGEN_TEST_C++0x option and let EIGEN_TEST_CXX11 adds the -std=c++11 flag
2015-02-20 09:31:27 +01:00
Gael Guennebaud
b192e29eae
In C++11 destructors do not throw by default (fix CommaInitializer unit test)
2015-02-20 09:28:34 +01:00
Benoit Steiner
ab41652d81
Pulled latest changes from trunk
2015-02-19 21:23:37 -08:00
Benoit Steiner
7765039f1c
Marked the CUDA packet primitives as EIGEN_DEVICE_FUNC since they'll end up being executed on the GPU device.
2015-02-19 21:22:51 -08:00
Gael Guennebaud
a66f5fc2fd
Fix regression with C++11 support of lambda: now internal::result_of falls back to std::result_of in C++11.
2015-02-19 23:32:12 +01:00
Gael Guennebaud
ece6b440f9
Fix a C++11 compilation issue in unit test
2015-02-19 23:31:08 +01:00
Gael Guennebaud
1b7e12847d
Fix some calls to result_of on binary functors as unary ones.
2015-02-19 23:30:41 +01:00
Gael Guennebaud
0f4dd15dfc
Declare const some const variables
2015-02-19 23:28:57 +01:00
Benoit Steiner
92ceb02c6d
Pulle latest updates from trunk
2015-02-19 11:59:52 -08:00
Benoit Steiner
110fb90250
Improved the documentations
2015-02-19 11:59:04 -08:00
Gael Guennebaud
829dddd0fd
Add support for C++11 result_of/lambdas
2015-02-19 15:18:37 +01:00
Benoit Jacob
db05f2d01e
rotating kernel: avoid compiling anything outside of ARM
2015-02-18 15:43:52 -05:00
Benoit Jacob
0ed00d5438
remove a newly introduced redundant typedef - sorry.
2015-02-18 15:05:01 -05:00
Benoit Jacob
9bd8a4bab5
bug #955 - Implement a rotating kernel alternative in the 3px4 gebp path
...
This is substantially faster on ARM, where it's important to minimize the number of loads.
This is specific to the case where all packet types are of size 4. I made my best attempt to minimize how dirty this is... opinions welcome.
Eventually one could have a generic rotated kernel, but it would take some work to get there. Also, on sandy bridge, in my experience, it's not beneficial (even about 1% slower).
2015-02-18 15:03:35 -05:00
Hauke Heibel
ee27d50633
Fixed template parameter.
2015-02-18 18:51:08 +01:00
Gael Guennebaud
73a24de424
merge
2015-02-18 15:51:00 +01:00
Gael Guennebaud
63eb0f6fe6
Clean a bit computeProductBlockingSizes (use Index type, remove CEIL macro)
2015-02-18 15:49:05 +01:00
Gael Guennebaud
fc5c3e85e2
Fix bug #961 : eigen-doc.tgz included part of itself.
2015-02-18 15:47:01 +01:00
Benoit Jacob
4a3e6c8be1
bug #958 - Allow testing specific blocking sizes
...
This is only a debugging/testing patch. It allows testing specific
product blocking sizes, typically to study the impact on performance.
Example usage:
int testk, testm, testn;
#define EIGEN_TEST_SPECIFIC_BLOCKING_SIZES
#define EIGEN_TEST_SPECIFIC_BLOCKING_SIZE_K testk
#define EIGEN_TEST_SPECIFIC_BLOCKING_SIZE_M testm
#define EIGEN_TEST_SPECIFIC_BLOCKING_SIZE_N testn
#include <Eigen/Core>
2015-02-18 09:43:55 -05:00
Gael Guennebaud
c7bb1e8ea8
Fix a regression when using OpenMP, and fix bug #714 : the number of threads might be lower than the number of requested ones
2015-02-18 15:19:23 +01:00
Jan Blechta
168ceb271e
Really use zero guess in ConjugateGradients::solve as documented
...
and expected for consistency with other methods.
2015-02-18 14:26:10 +01:00
Gael Guennebaud
8fdcaded5e
merge
2015-03-04 10:18:08 +01:00
Gael Guennebaud
c43154bbc5
Check for no-reallocation in SparseMatrix::insert (bug #974 )
2015-03-04 10:16:46 +01:00
Gael Guennebaud
1ce0178363
Improve efficiency of SparseMatrix::insert/coeffRef for sequential outer-index insertion strategies (bug #974 )
2015-03-04 09:39:26 +01:00
Gael Guennebaud
3dca4a1efc
Update manual wrt new LSCG solver.
2015-03-04 09:35:30 +01:00
Gael Guennebaud
05274219a7
Add a CG-based solver for rectangular least-square problems (bug #975 ).
2015-03-04 09:34:27 +01:00
Benoit Jacob
2aa09e6b4e
Fix asm comments in 1px1 kernel
2015-03-03 13:44:00 -05:00
Benoit Steiner
5d2fd64a1a
Fixed compilation error when compiling with gcc4.7
2015-03-03 08:56:49 -08:00
Benoit Jacob
f64b4480af
Add missing copyright notices
2015-03-03 11:43:56 -05:00
Benoit Jacob
eae8e27b7d
Add a benchmark-default-sizes action to benchmark-blocking-sizes.cpp
2015-03-03 11:41:21 -05:00
Marc Glisse
37a93c4263
New scoring functor to select the pivot.
...
This is can be useful for non-floating point scalars, where choosing the biggest element is generally not the best choice.
2015-03-03 17:08:28 +01:00
Benoit Jacob
ccc1277a42
must also disable complex<double> when disabling double vectorization
2015-03-03 10:17:05 -05:00
Benoit Jacob
f839099512
Work around an ICE in Clang 3.5 in the iOS toolchain with double NEON intrinsics.
2015-03-03 09:35:22 -05:00
Benoit Jacob
9930e9583b
Improve analyze-blocking-sizes, and in particular give it a evaluate-defaults tool
...
that shows the efficiency of Eigen's default blocking sizes choices, using a
previously computed table from benchmark-blocking-sizes.
2015-03-02 18:08:38 -05:00
Benoit Jacob
1ec0f4fadf
HalfPacket also needed to be disabled for double, on ARMv8.
2015-03-02 16:08:54 -05:00
Gael Guennebaud
3109f0e74e
Add SSE vectorization of Quaternion::conjugate. Significant speed-up when combined with products like q1*q2.conjugate()
2015-03-02 20:09:33 +01:00
