Re: [ANN]: cpuminer-opt v3.6.5, open source optimized multi-algo CPU miner
I am still curious about AVX2 performance on Ryzen. I have read that their implementation isn't native but I haven't
seen any performance comparisons. If anyone has a Ryzen I would be interested in a performance comparison of
AVX vs AVX2 on algos that have AVX2 optimizations.
If you can list the algos you would like tested I can try it out on both Ryzen R7 1700X and R5 1600 CPUs. Possibly on Threadripper too towards the end of summer if I talk myself into getting one.
Lyra2v2, Lyra2z and Deep have the most AVX2 and should see the biggest improvement. All the X algos, qubit, timetravel
and a few others also have varying amounts of AVX2 code.
Preliminary results:
Ryzen 1700X @ stock settings with 8 threads set in the batch file.
Lyra2v2 = 1001 Kh/s on avx2
= 1016 Kh/s on avx
Timetravel = 799 Kh/s on avx2
= 843 Kh/s on avx
X11 = 686 Kh/s on avx2
= 711 Kh/s on avx
X17 = 294 Kh/s on avx2
= 294 Kh/s on avx
X17 was the same for both options, but I was surprised to see avx beating avx2 for the other algorithms tested. My understanding was that it would likely be the other way around....
Please test the HW SHA for Ryzen.
lbry
sha256t
skein
myr-groestl
m7m