With the upcoming challenge the age-old question poses itself again: Does HT help with throughput for this one or not?
First of all, I normally avoid running subprojects with GPU apps on CPUs, but for the challenge I'm going to throw everything I have at this (it does add up, and the 1950X can contribute almost GTX 980 levels of tasks). Anyway, during last year's challenge I was running the CPU app as well and had HT enabled on every system capable of it. I don't remember explicitly, but I think I did some testing beforehand and found that it made a tiny improving difference.
Yesterday I tested it on an i7-3770 and extrapolated runtimes after the tasks had reached 1%. With only 4 tasks one came in at ~65,000 seconds, with 8 it was ~128,000. Today I clocked those same tasks again (8 running) and times are between 129,000 and 130,000. This would still suggest a miniscule benefit, but there seems to be quite some variation between units as well as speeding up and slowing down throughout single tasks. Bottomline, I'm not so sure anymore that it does help. Worst case scenario it's just twice as long and no harm done (apart from some tasks not making it before the challenge ends, in which case turn if off)?
Anyone have any findings of their own?
Long live the sievers.
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