Rasmus Munk Larsen
b021cdea6d
Clean up float16 a.k.a. Eigen::half support in Eigen. Move the definition of half to Core/arch/Default and move arch-specific packet ops to their respective sub-directories.
2019-08-27 11:30:31 -07:00
Rasmus Munk Larsen
a3298b22ec
Implement vectorized versions of log1p and expm1 in Eigen using Kahan's formulas, and change the scalar implementations to properly handle infinite arguments.
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Depending on instruction set, significant speedups are observed for the vectorized path:
log1p wall time is reduced 60-93% (2.5x - 15x speedup)
expm1 wall time is reduced 0-85% (1x - 7x speedup)
The scalar path is slower by 20-30% due to the extra branch needed to handle +infinity correctly.
Full benchmarks measured on Intel(R) Xeon(R) Gold 6154 here: https://bitbucket.org/snippets/rmlarsen/MXBkpM
2019-08-12 13:53:28 -07:00
Gael Guennebaud
f11364290e
ICC does not support -fno-unsafe-math-optimizations
2019-03-22 09:26:24 +01:00
Gael Guennebaud
1c09ee8541
bug #1674 : workaround clang fast-math aggressive optimizations
2019-02-22 15:48:53 +01:00
Gael Guennebaud
871e2e5339
bug #1674 : disable GCC's unsafe-math-optimizations in sin/cos vectorization (results are completely wrong otherwise)
2019-02-03 08:54:47 +01:00
Gael Guennebaud
4356a55a61
PR 571: Implements an accurate argument reduction algorithm for huge inputs of sin/cos and call it instead of falling back to std::sin/std::cos.
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This makes both the small and huge argument cases faster because:
- for small inputs this removes the last pselect
- for large inputs only the reduction part follows a scalar path,
the rest use the same SIMD path as the small-argument case.
2019-01-14 13:54:01 +01:00
Gael Guennebaud
9005f0111f
Replace compiler's alignas/alignof extension by respective c++11 keywords when available. This also fix a compilation issue with gcc-4.7.
2019-01-11 17:10:54 +01:00
Gael Guennebaud
3f14e0d19e
fix warning
2019-01-09 15:45:21 +01:00
Gael Guennebaud
e6b217b8dd
bug #1652 : implements a much more accurate version of vectorized sin/cos. This new version achieve same speed for SSE/AVX, and is slightly faster with FMA. Guarantees are as follows:
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- no FMA: 1ULP up to 3pi, 2ULP up to sin(25966) and cos(18838), fallback to std::sin/cos for larger inputs
- FMA: 1ULP up to sin(117435.992) and cos(71476.0625), fallback to std::sin/cos for larger inputs
2019-01-09 15:25:17 +01:00
Gael Guennebaud
0f6f75bd8a
Implement a faster fix for sin/cos of large entries that also correctly handle INF input.
2018-12-23 17:26:21 +01:00
Gael Guennebaud
38d704def8
Make sure that psin/pcos return number in [-1,1] for large inputs (though sin/cos on large entries is quite useless because it's inaccurate)
2018-12-23 16:13:24 +01:00
Gael Guennebaud
5713fb7feb
Fix plog(+INF): it returned ~87 instead of +INF
2018-12-23 15:40:52 +01:00
Gael Guennebaud
efa4c9c40f
bug #1615 : slightly increase the default unrolling limit to compensate for changeset 101ea26f5e
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This solves a performance regression with clang and 3x3 matrix products.
2018-12-13 10:42:39 +01:00
Gael Guennebaud
b477d60bc6
Extend the generic psin_float code to handle cosine and make SSE and AVX use it (-> this adds pcos for AVX)
2018-11-30 11:26:30 +01:00
Gael Guennebaud
b131a4db24
bug #1631 : fix compilation with ARM NEON and clang, and cleanup the weird pshiftright_and_cast and pcast_and_shiftleft functions.
2018-11-27 23:45:00 +01:00
Gael Guennebaud
a1a5fbbd21
Update pshiftleft to pass the shift as a true compile-time integer.
2018-11-27 22:57:30 +01:00
Gael Guennebaud
fa7fd61eda
Unify SSE/AVX psin functions.
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It is based on the SSE version which is much more accurate, though very slightly slower.
This changeset also includes the following required changes:
- add packet-float to packet-int type traits
- add packet float<->int reinterpret casts
- add faster pselect for AVX based on blendv
2018-11-27 22:41:51 +01:00
Gael Guennebaud
502f92fa10
Unify SSE and AVX pexp for double.
2018-11-26 23:12:44 +01:00
Gael Guennebaud
cf8b85d5c5
Unify SSE and AVX implementation of pexp
2018-11-26 16:36:19 +01:00
Gael Guennebaud
2c44c40114
First step toward a unification of packet log implementation, currently only SSE and AVX are unified.
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To this end, I added the following functions: pzero, pcmp_*, pfrexp, pset1frombits functions.
2018-11-26 14:21:24 +01:00
Gael Guennebaud
b240080e64
bug #1436 : fix compilation of Jacobi rotations with ARM NEON, some specializations of internal::conj_helper were missing.
2017-06-15 10:16:30 +02:00
Gael Guennebaud
35a8e94577
bug #1167 : simplify installation of header files using cmake's install(DIRECTORY ...) command.
2016-08-29 10:59:37 +02:00
Benoit Jacob
69124cfca2
Automatic relicensing to MPL2 using Keirs script. Manual fixup follows.
2012-07-13 14:42:47 -04:00
Jitse Niesen
e2d46eac42
Remove all references to EIGEN_TUNE_CPU_CACHE_SIZE.
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This macro is no longer used as of revision 0212eec23f
2011-02-04 22:33:53 +01:00
Benoit Jacob
3a30a2bc3e
forgot to remove a #endif
2010-08-13 14:03:38 -04:00
Benoit Jacob
b80d9dd42e
fix determination of number of registers on sse:
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__i386__ was not defined by MSVC 2010.
fixed as (2*sizeof(void*)).
also move that to SSE/ and let the default for unknown arch's be just 8.
2010-08-13 13:55:28 -04:00
Gael Guennebaud
28e64b0da3
email change
2010-06-24 23:21:58 +02:00
Gael Guennebaud
88cd6885be
Add a proof concept API to configure the blocking parameters at runtime.
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After validation of the final API I'll update the other products to use it.
2010-06-07 16:35:25 +02:00
Gael Guennebaud
9a3b00c040
add missing cmake directives for arch/Default
2010-03-08 22:15:35 +01:00
Gael Guennebaud
ea8cad5151
make the number of registers easier to configure per architectures
2010-03-04 18:58:12 +01:00
Gael Guennebaud
7dd81aad74
factorize default performance related settings to a single file
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included after the architecture specific files such that they
can be adapted by each platform.
2010-03-03 18:47:58 +01:00
