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Using `static` on a AVX2 counter function increases performance ~10x in MT environment without any change in Compiler optimizations

score 76 · Answer 1 · 2024-03-30T14:27:49.290000

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Using `static` on a AVX2 counter function increases performance ~10x in MT environment without any change in Compiler optimizations

76 views Asked by Maj mac At 30 March 2024 at 14:27

score 73 · Answer 2 · 2024-03-21T21:01:25.743000

Convert Variable Width Bitstream (2-bit or 4-bit symbols) into Fixed Width

73 views Asked by SapphireSun At 21 March 2024 at 21:01

score 52 · Answer 3 · 2024-03-14T13:58:49.053000

Achieving More FMA3 Performance Than The Theoretical Maximum

52 views Asked by Anili At 14 March 2024 at 13:58

score 47 · Answer 4 · 2024-03-13T11:11:07.133000

High Variance In Manual Vectorization Performance

47 views Asked by Anili At 13 March 2024 at 11:11

score 84 · Answer 5 · 2024-03-05T04:37:31.340000

AVX2 vectorization for code similar to prefix sum (decrement by count of preceding matches in short fixed-length arrays)

84 views Asked by swineone At 05 March 2024 at 04:37

score 166 · Answer 6 · 2024-02-22T18:02:30.420000

Multiplying packed 32-bit integers by a 32-bit float with AVX2

166 views Asked by kevmo314 At 22 February 2024 at 18:02

score 193 · Answer 7 · 2024-01-28T15:16:37.683000

Are there processors on which VPMASKMOVD generates faults for the masked-out elements?

193 views Asked by harold At 28 January 2024 at 15:16

score 123 · Answer 8 · 2024-01-22T17:14:51.247000

Nan problem with Intel 2022 compiler using AVX2 & /fp:fast

123 views Asked by Martin Brown At 22 January 2024 at 17:14

score 94 · Answer 9 · 2024-01-13T22:18:17.940000

_mm256_insert_epi32() has no effect

94 views Asked by Silicomancer At 13 January 2024 at 22:18

score 34 · Answer 10 · 2024-01-09T15:36:13.050000

Find common minimum CPU features to expect when targeting a certain macOS deployment target

34 views Asked by PluginPenguin At 09 January 2024 at 15:36

score 137 · Answer 11 · 2024-01-08T09:26:18.293000

AVX2 narrowing conversion, from uint16_t to uint8_t

137 views Asked by Robinson At 08 January 2024 at 09:26

score 1417 · Answer 12 · 2023-12-25T07:56:10.160000

Why performance for this index-of-max function over many arrays of 256 bytes is so slow on Intel i3-N305 compared to AMD Ryzen 7 3800X?

1.4k views Asked by Paul Jurczak At 25 December 2023 at 07:56

score 61 · Answer 13 · 2023-12-19T13:14:48.373000

dst[i] eqaul src[i] multiply by dst[i-1] in avx or sse

61 views Asked by lee web At 19 December 2023 at 13:14

score 137 · Answer 14 · 2023-12-12T03:46:49.027000

Why can't Oracle Linux automatically detect CPUs with AVX?

137 views Asked by quynh_ngo At 12 December 2023 at 03:46

score 99 · Answer 15 · 2023-12-12T02:50:29.573000

No Speedup in Float Multiply with Rust SSE Intrinsics

99 views Asked by John Stanford At 12 December 2023 at 02:50

score 117 · Answer 16 · 2023-12-11T15:25:08.057000

Fast int32_t dot product of two C++ integer vectors using AVX is not faster

117 views Asked by OopsUser At 11 December 2023 at 15:25

score 84 · Answer 17 · 2023-12-08T10:44:36.087000

Adding slightly shifted vectors

84 views Asked by Throwaway9 At 08 December 2023 at 10:44

score 184 · Answer 18 · 2023-11-18T05:48:30.413000

How to Improve XORing of large uint64 arrays?

184 views Asked by CryptoKitty At 18 November 2023 at 05:48

score 128 · Answer 19 · 2023-11-03T14:30:43.103000

Setting/getting 1-bits of __m256i vector from integer array of bit positions

128 views Asked by user2052436 At 03 November 2023 at 14:30

score 98 · Answer 20 · 2023-11-01T17:47:52.063000

how to calculate a parallel product in ispc

98 views Asked by Dov At 01 November 2023 at 17:47

TechQA.

List Question

Using `static` on a AVX2 counter function increases performance ~10x in MT environment without any change in Compiler optimizations

Convert Variable Width Bitstream (2-bit or 4-bit symbols) into Fixed Width

Achieving More FMA3 Performance Than The Theoretical Maximum

High Variance In Manual Vectorization Performance

AVX2 vectorization for code similar to prefix sum (decrement by count of preceding matches in short fixed-length arrays)

Multiplying packed 32-bit integers by a 32-bit float with AVX2

Are there processors on which VPMASKMOVD generates faults for the masked-out elements?

Nan problem with Intel 2022 compiler using AVX2 & /fp:fast

_mm256_insert_epi32() has no effect

Find common minimum CPU features to expect when targeting a certain macOS deployment target

AVX2 narrowing conversion, from uint16_t to uint8_t

Why performance for this index-of-max function over many arrays of 256 bytes is so slow on Intel i3-N305 compared to AMD Ryzen 7 3800X?

dst[i] eqaul src[i] multiply by dst[i-1] in avx or sse

Why can't Oracle Linux automatically detect CPUs with AVX?

No Speedup in Float Multiply with Rust SSE Intrinsics

Fast int32_t dot product of two C++ integer vectors using AVX is not faster

Adding slightly shifted vectors

How to Improve XORing of large uint64 arrays?

Setting/getting 1-bits of __m256i vector from integer array of bit positions

how to calculate a parallel product in ispc

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