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Forum: Cunningham Tables 2021-11-23, 11:38
Replies: 317
Views: 44,818
Posted By henryzz
Is the plan to do this matrix on a CPU or to pass...

Is the plan to do this matrix on a CPU or to pass it off to a GPU? I get the impression frin https://mersenneforum.org/showthread.php?t=27042 that a GPU would do it far faster although it would need...
Forum: Cunningham Tables 2021-11-09, 23:33
Replies: 317
Views: 44,818
Posted By henryzz
That's weird. My system takes 185s with 3e7 and...

That's weird. My system takes 185s with 3e7 and 322s without bkthresh1

./las -poly 3_748plus.poly -q0 100000000 -A 30 -nq 20 -lim0 500000000 -lim1 300000000 -lpb0 33 -lpb1 34 -mfb0 66 -mfb1 98...
Forum: Cunningham Tables 2021-11-09, 14:52
Replies: 317
Views: 44,818
Posted By henryzz
Too high -bkthresh certainly will slow it down. I...

Too high -bkthresh certainly will slow it down. I think you want a fairly equal amount of work before and after the threshold. What values have you tried? Finding a good value may be difficult with...
Forum: Cunningham Tables 2021-11-09, 09:00
Replies: 317
Views: 44,818
Posted By henryzz
My experience is that you can save a fair bit of...

My experience is that you can save a fair bit of memory using -bkthresh1 without affecting speed significantly. I think I even saw a very small speedup with the right value.



Found my post...
Forum: Cunningham Tables 2021-10-26, 17:55
Replies: 317
Views: 44,818
Posted By henryzz
Adjust strategy 2 has a tendency towards...

Adjust strategy 2 has a tendency towards selecting regions that need more memory at lower q.
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