Maamoun TK <maamoun...@googlemail.com> writes: > On POWER9 I got the following benchmark result: > > ./configured: > chacha encrypt 308.58 > chacha decrypt 325.87 > ./configured --enable-power-altivec "master branch": > chacha encrypt 342.15 > chacha decrypt 356.24 > ./configured --enable-power-altivec "ppc-chacha-2core": > chacha encrypt 648.97 > chacha decrypt 648.00 > > It's gotten better with every further optimization on the core, great work.
Nice. So almost a factor 2 speedup from doing 2 blocks in parallel. I wonder if one can get close to another factor of two by going to 4 blocks. I hope to get the time to try that out, it should be fairly easy. (And if that does work out fine, maybe the code to do only 2 blocks could be removed). Regards, /Niels -- Niels Möller. PGP-encrypted email is preferred. Keyid 368C6677. Internet email is subject to wholesale government surveillance. _______________________________________________ nettle-bugs mailing list nettle-bugs@lists.lysator.liu.se http://lists.lysator.liu.se/mailman/listinfo/nettle-bugs
