[QUOTE=diamonddave;282370]I would guess, optimal use of GPU?[/QUOTE]

Certainly. George already explained that. CudaLucas uses FFT sizes which are powers of two only. A 70M exponent would use same FFT size as a 52M exponent (which size is somehow an overkill for the last - smaller - expo). The best gain CL will give you is when you LL expos just a bit below of an upper limit.

[QUOTE=LaurV;282373]Certainly. George already explained that. CudaLucas uses FFT sizes which are powers of two only. A 70M exponent would use same FFT size as a 52M exponent (which size is somehow an overkill for the last - smaller - expo). The best gain CL will give you is when you LL expos just a bit below of an upper limit.[/QUOTE]

I'd say at least a couple of bits below... :smile:

Luigi

[QUOTE=kladner;282372]OK. I'll take the first two.

72000209
72000283
70-74.

EDIT: Running.[/QUOTE]

About 3-1/2 hours to go. I never ran anything up to 74 before. I knew they would take quite a while, but did not really think through the numbers. So it still kind of surprised me (though it shouldn't have) to find them still running this morning.

Could someone run (all or some of) these from 74 to 79?

Factor=332249831,74,79
Factor=332249977,74,79
Factor=332250073,74,79
Factor=332250089,74,79
Factor=332250211,74,79
Factor=332250241,74,79
Factor=332250257,74,79
Factor=332250461,74,79

I have not registered them, but they are currently not assigned.

[code]no factor for M72000343 from 2^70 to 2^74 [mfaktc 0.17 barrett79_mul32][/code]
I still have 3h left on my second exponent. How the hell have you finished already?

I'll take the last three again.
[QUOTE=Uncwilly;282489]
Factor=332250241,74,79
Factor=332250257,74,79
Factor=332250461,74,79[/QUOTE]

okay I'll grab the rest.

Factor=332249831,74,79
Factor=332249977,74,79
Factor=332250073,74,79
Factor=332250089,74,79
Factor=332250211,74,79

hhehe I should of checked how much work that was.

4 of them done in <3days
the one done in <5days

-- Craig

[QUOTE=kladner;282436]About 3-1/2 hours to go. I never ran anything up to 74 before. I knew they would take quite a while, but did not really think through the numbers. So it still kind of surprised me (though it shouldn't have) to find them still running this morning.[/QUOTE]

[CODE]M72000209 has a factor: 10234577977625536865383
found 1 factor(s) for M72000209 from 2^73 to 2^74 [mfaktc 0.17-Win barrett79_mul32]

no factor for M72000283 from 2^70 to 2^71 [mfaktc 0.17-Win barrett79_mul32]
no factor for M72000283 from 2^71 to 2^72 [mfaktc 0.17-Win barrett79_mul32]
no factor for M72000283 from 2^72 to 2^73 [mfaktc 0.17-Win barrett79_mul32]
no factor for M72000283 from 2^73 to 2^74 [mfaktc 0.17-Win barrett79_mul32][/CODE]

These have been turned in to PrimeNet.

[QUOTE=kladner;282521][CODE]M72000209 has a factor: 10234577977625536865383[/CODE][/QUOTE]

Sweet! GPUs have saved me from needless work once again. Many thanks!

I got a charge out of it, seeing the results. I had never run anything in those ranges, either (up to 74, 72M exponent.):smile:
Thanks on this end, too. Glad to help out!

A humble suggestion
 

Would it not benefit GIMPS if a few more of the LLs currently being dished out were TFed adequately?

Broken Record

PS Why should the "expiry time" for TF assignments be anywhere near to that for a LL?
And why do some folk (no names/no packdrill) hoard 6000 TF assignments at once, when those assignments could be distributed?