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Old 2020-02-28, 15:48   #433
VBCurtis
 
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"Curtis"
Feb 2005
Riverside, CA

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Using the primegrid sieve is a massive speed improvement; I'd stick to k under 10,000 because of that alone. Lots and lots of k's are searched to something less than a million; extending that work is a far better idea than trying so hard to find a k that nobody has yet worked on.

CUDA-LLR exists; you can find a thread about it, including source to download. It's not bug-free, but it works at least for some systems and some cards. I believe the largest k it supports is much smaller than that of regular LLR; or perhaps it was that the speed penalty for large k was much worse than that of regular LLR. Don't expect much support if you do try it- hardly anyone uses it.
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