From 61ba602af5d7c3a642d732c4cc6518ed81dfc1c6 Mon Sep 17 00:00:00 2001 From: Andy Polyakov Date: Tue, 8 Oct 2013 23:36:55 +0200 Subject: [PATCH] sha/asm/sha*-mb-x86_64.pl: commentary update. --- crypto/sha/asm/sha1-mb-x86_64.pl | 16 +++++++++------- crypto/sha/asm/sha256-mb-x86_64.pl | 16 +++++++++------- 2 files changed, 18 insertions(+), 14 deletions(-) diff --git a/crypto/sha/asm/sha1-mb-x86_64.pl b/crypto/sha/asm/sha1-mb-x86_64.pl index fff96547da..93996e15f9 100644 --- a/crypto/sha/asm/sha1-mb-x86_64.pl +++ b/crypto/sha/asm/sha1-mb-x86_64.pl @@ -12,20 +12,22 @@ # naturally limited to 4 on pre-AVX2 processors and to 8 on # AVX2-capable processors such as Haswell. # -# this +aesni(*) sha1 aesni-sha1 gain +# this +aesni(i) sha1 aesni-sha1 gain(iv) # ------------------------------------------------------------------- -# Westmere(**) 10.4/n +1.28=3.88(n=4) 5.44 6.58 +70% -# Atom(**) 18.9/n +3.93=8.66(n=4) 10.0 14.0 +62% +# Westmere(ii) 10.4/n +1.28=3.88(n=4) 5.44 6.58 +70% +# Atom(ii) 18.9/n +3.93=8.66(n=4) 10.0 14.0 +62% # Sandy Bridge (8.16 +5.15=13.3)/n 4.99 5.98 +80% # Ivy Bridge (8.03 +5.14=13.2)/n 4.60 5.54 +68% -# Haswell(***) (8.96 +5.00=14.0)/n 3.57 4.55 +160% +# Haswell(iii) (8.96 +5.00=14.0)/n 3.57 4.55 +160% # Bulldozer (9.75 +5.76=15.5)/n 5.95 6.37 +64% # -# (*) multi-block CBC encrypt with 128-bit key; -# (**) (HASH+AES)/n does not apply to Westmere for n>3 and Atom, +# (i) multi-block CBC encrypt with 128-bit key; +# (ii) (HASH+AES)/n does not apply to Westmere for n>3 and Atom, # because of lower AES-NI instruction throughput; -# (***) "this" is for n=8, when we gather twice as much data, result +# (iii) "this" is for n=8, when we gather twice as much data, result # for n=4 is 7.98+4.44=12.4; +# (iv) improvement coefficients in real-life application are somewhat +# lower and range from 30% to 100% (on Haswell); $flavour = shift; $output = shift; diff --git a/crypto/sha/asm/sha256-mb-x86_64.pl b/crypto/sha/asm/sha256-mb-x86_64.pl index 5bed43b60c..2e4b102f52 100644 --- a/crypto/sha/asm/sha256-mb-x86_64.pl +++ b/crypto/sha/asm/sha256-mb-x86_64.pl @@ -12,21 +12,23 @@ # naturally limited to 4 on pre-AVX2 processors and to 8 on # AVX2-capable processors such as Haswell. # -# this +aesni(*) sha256 aesni-sha256 gain +# this +aesni(i) sha256 aesni-sha256 gain(iv) # ------------------------------------------------------------------- -# Westmere(**) 23.3/n +1.28=7.11(n=4) 12.3 +3.75=16.1 +126% -# Atom(**) 39.1/n +3.93=13.7(n=4) 20.8 +5.69=26.5 +93% +# Westmere(ii) 23.3/n +1.28=7.11(n=4) 12.3 +3.75=16.1 +126% +# Atom(ii) 39.1/n +3.93=13.7(n=4) 20.8 +5.69=26.5 +93% # Sandy Bridge (20.5 +5.15=25.7)/n 11.6 13.0 +103% # Ivy Bridge (20.4 +5.14=25.5)/n 10.3 11.6 +82% -# Haswell(***) (21.0 +5.00=26.0)/n 7.80 8.79 +170% +# Haswell(iii) (21.0 +5.00=26.0)/n 7.80 8.79 +170% # Bulldozer (21.6 +5.76=27.4)/n 13.6 13.7 +100% # -# (*) multi-block CBC encrypt with 128-bit key; -# (**) (HASH+AES)/n does not apply to Westmere for n>3 and Atom, +# (i) multi-block CBC encrypt with 128-bit key; +# (ii) (HASH+AES)/n does not apply to Westmere for n>3 and Atom, # because of lower AES-NI instruction throughput, nor is there # AES-NI-SHA256 stitch for these processors; -# (***) "this" is for n=8, when we gather twice as much data, result +# (iii) "this" is for n=8, when we gather twice as much data, result # for n=4 is 20.3+4.44=24.7; +# (iv) improvement coefficients in real-life application are somewhat +# lower and range from 75% to 130% (on Haswell); $flavour = shift; $output = shift; -- GitLab