DRAFT: Replace Field Arithmetic #1260
Closed
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Co-authored-by: Tim Ruffing <crypto@timruffing.de>
--with-asm=no on Intel i5-8265U (8) @ 3.900GHz Benchmark , Min(us) , Avg(us) , Max(us) scalar_add , 0.00883 , 0.00937 , 0.0132 scalar_negate , 0.00338 , 0.00341 , 0.00357 scalar_mul , 0.0373 , 0.0376 , 0.0390 scalar_split , 0.169 , 0.171 , 0.183 scalar_inverse , 1.74 , 1.75 , 1.76 scalar_inverse_var , 1.24 , 1.24 , 1.26 field_half , 0.00281 , 0.00284 , 0.00294 field_normalize , 0.00965 , 0.00977 , 0.0101 field_normalize_weak , 0.00374 , 0.00377 , 0.00391 field_sqr , 0.0147 , 0.0150 , 0.0161 field_mul , 0.0192 , 0.0195 , 0.0209 field_inverse , 1.73 , 1.73 , 1.75 field_inverse_var , 1.22 , 1.24 , 1.26 field_is_square_var , 1.57 , 1.58 , 1.60 field_sqrt , 4.05 , 4.10 , 4.20 group_double_var , 0.128 , 0.129 , 0.132 group_add_var , 0.307 , 0.308 , 0.312 group_add_affine , 0.249 , 0.252 , 0.268 group_add_affine_var , 0.223 , 0.223 , 0.227 group_add_zinv_var , 0.244 , 0.247 , 0.254 group_to_affine_var , 1.33 , 1.33 , 1.35 wnaf_const , 0.241 , 0.246 , 0.262 ecmult_wnaf , 0.538 , 0.543 , 0.554 hash_sha256 , 0.275 , 0.278 , 0.292 hash_hmac_sha256 , 1.08 , 1.09 , 1.13 hash_rfc6979_hmac_sha256 , 5.96 , 5.99 , 6.17 context_create , 0.576 , 0.582 , 0.601
|
FWIW I opened this issue mit-plv/fiat-crypto#1582 about an optimization currently present in the libsecp256k1 field C code, which isn't in the fiat-crypto output (nor in the libsecp256k1 current asm code). |
|
Let me close this here for now. I opened #1261 to track integration of fiat-crypto + CryptOpt. :) |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
So in this PR, the C implementation is replaced by the Fiat Cryptography C implementation and the
x86-46implementation is replaced with CryptOpt optimized versions.I'll report the performance results soon.
./configure(default) should use the optimizedx86-asm./configure --with-x86=noshould use the Fiat-C version./configure./configure --with-x86=noIs that all we need? I then run
./bench_internal, reporting the field_{mul,sqr} rows as well as./bench_ecmultreporting theecmult_{gen,const,1p,0p_g}rows.