View Single Post
Old 2021-01-04, 19:29   #8
nordi
 
Dec 2016

7×13 Posts
Default

I tried out the PracSearch parameter and compared the perfomance of stage 1 in 30.4b5 against version 29.8, using my Ryzen 3950X (=Zen2 architecture):

M1277
  • PracSearch=1 52.7s
  • PracSearch=7 57.0s
  • version 29.8 55.6s
M10,061
  • PracSearch=1 24.5s
  • PracSearch=7 24.2s
  • PracSearch=14 25.1s
  • version 29.8 24.6s
M100,069
  • PracSearch=7 33.3
  • PracSearch=10 32.9
  • PracSearch=14 33.1
  • version 29.8 37.5s
M1,000,003
  • PracSearch=7 55.3
  • PracSearch=14 55.8
  • version 29.8 69.5s
Considering the measurements aren't super precise, it seems PracSearch=7 is a very good choice overall, except for extremely small exponents like M1277. With correct PracSearch parameter, the new version is always faster in stage 1. Very, very nice!
nordi is offline   Reply With Quote