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Clarify the description of the x86-64-vnni256 and x86-64-avxvnni architectures

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Now it is clearly explained that "x86-64-vnni256" requires full
support of AVX512-VNNI, but only 256-bit operands are used.

closes https://github.com/official-stockfish/Stockfish/pull/4427

No functional change
This commit is contained in:
Maxim Masiutin
2023-03-05 17:10:52 +02:00
committed by Joost VandeVondele
parent cdec775a15
commit 70dfa141d5
2 changed files with 5 additions and 4 deletions
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1
AUTHORS
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@@ -134,6 +134,7 @@ Matt Ginsberg (mattginsberg)
Matthew Lai (matthewlai)
Matthew Sullivan (Matt14916)
Max A. (Disservin)
Maxim Masiutin (maximmasiutin)
Maxim Molchanov (Maxim)
Michael An (man)
Michael Byrne (MichaelB7)

8
src/Makefile
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@@ -92,7 +92,7 @@ VPATH = syzygy:nnue:nnue/features
# avx2 = yes/no --- -mavx2 --- Use Intel Advanced Vector Extensions 2
# avxvnni = yes/no --- -mavxvnni --- Use Intel Vector Neural Network Instructions AVX
# avx512 = yes/no --- -mavx512bw --- Use Intel Advanced Vector Extensions 512
# vnni256 = yes/no --- -mavx512vnni --- Use Intel Vector Neural Network Instructions 256
# vnni256 = yes/no --- -mavx256vnni --- Use Intel Vector Neural Network Instructions 512 with 256bit operands
# vnni512 = yes/no --- -mavx512vnni --- Use Intel Vector Neural Network Instructions 512
# neon = yes/no --- -DUSE_NEON --- Use ARM SIMD architecture
# dotprod = yes/no --- -DUSE_NEON_DOTPROD --- Use ARM advanced SIMD Int8 dot product instructions
@@ -773,10 +773,10 @@ help:
@echo ""
@echo "Supported archs:"
@echo ""
@echo "x86-64-vnni512 > x86 64-bit with vnni support 512bit wide"
@echo "x86-64-vnni256 > x86 64-bit with vnni support 256bit wide"
@echo "x86-64-vnni512 > x86 64-bit with vnni 512bit support"
@echo "x86-64-vnni256 > x86 64-bit with vnni 512bit support, limit operands to 256bit wide"
@echo "x86-64-avx512 > x86 64-bit with avx512 support"
@echo "x86-64-avxvnni > x86 64-bit with avxvnni support"
@echo "x86-64-avxvnni > x86 64-bit with vnni 256bit support"
@echo "x86-64-bmi2 > x86 64-bit with bmi2 support"
@echo "x86-64-avx2 > x86 64-bit with avx2 support"
@echo "x86-64-sse41-popcnt > x86 64-bit with sse41 and popcnt support"