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Questions - avx512

AVX512: How to convert first 8 bytes into 8 64-bit integers?

I have an __m512i inputVector where each of the 64 bytes contains some offset. Next I need to add the first 8 byte offsets to 8 64-bit values stored in another __m512i variable (base). (In order to pr...
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Linoliumz

c++

c

avx

avx512

Votes: 0

Answers: 2

Latest Answer

_mm512_cvtepu8_epi64 does exactly what you want for the low 8 bytes. It only looks at the low 8 bytes of the input __m128i; you don't need to do anything special to make your 8 elements fill an __m12...
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Peter Cordes

transpose 8x16 matrix on AVX 512

I have a 8x16 uint32_t matrix already loaded in 8 zmm registers. They have the layout zmmi = {ai_15, ai_14, ..., ai_1, ai_0} where i goes from 0 to 7 and ai_j are 32 bit integers for each j from 0 to...
test-img

potuz

assembly

intrinsics

avx512

Votes: 0

Answers: 0

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