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Old 2019-11-23, 16:36   #749
aaronhaviland
 
Jan 2011
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*tap*tap* is this thing still on?

I freed up some time from other hobbies recently, and am thinking about getting back involved with this. It'll take me a while to get my devel environment back up to speed, but I figured I'd throw this out there if there's any interest.

Of note, I'm completely out of touch with the current state of all things factoring related, so if there's anything I should be aware of before I dive back in, please let me know!

Thanks, and happy factoring :)

(On a side note: I think my GPU is dying. I only get reliable results if I underclock it. This is sad for me, but it also gives me a reliable source of hardware errors to test with that I hadn't had before, so who knows, maybe it can help me make things more robust.)
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Old 2020-09-08, 12:28   #750
storm5510
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Quote:
Originally Posted by aaronhaviland View Post
*tap*tap* is this thing still on?
*Tap *tap... Nope. It's dead.
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Old 2020-09-08, 12:34   #751
James Heinrich
 
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Quote:
Originally Posted by storm5510 View Post
*Tap *tap... Nope. It's dead.
But gpuowl is very much alive, and the current go-to program for all non-TF GPU worktypes, other than TF for which stick with mfaktc/mfakto.
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Old 2020-09-08, 15:36   #752
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Quote:
Originally Posted by James Heinrich View Post
But gpuowl is very much alive, and the current go-to program for all non-TF GPU worktypes, other than TF for which stick with mfaktc/mfakto.
I meant to add that. Sorry!
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Old 2020-09-08, 16:15   #753
kriesel
 
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There are some NVIDIA gpus which can not run gpuowl, but can run cudapm1 or CUDALucas. They tend to be limited by gpu ram, and by cudapm1 issues. See https://www.mersenneforum.org/showthread.php?t=23389.

Addition of the Jacobi check to CUDALucas would be a big plus, and likely to be useful in confirming the next Mersenne prime discovery.

Implementing error checks in P-1 (either gpuowl or CUDAPm1 or anything else) is more complicated, and also needed. (In the LL series, the correct Jacobi symbol is known. In P-1 computations, it must be both calculated and checked.) See also https://www.mersenneforum.org/showthread.php?t=24168 for some ideas, particularly https://www.mersenneforum.org/showpo...1&postcount=10

But yeah, no reply in the thread for about 10 months, means it might have already missed Aaron Haviland's window of availability.

Last fiddled with by kriesel on 2020-09-08 at 16:34
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Old 2020-12-12, 18:07   #754
Dylan14
 
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I have made a PKGBUILD for this software. You can find it here: https://aur.archlinux.org/packages/cudapm1/.

Also, attached is a CUDA 11.1 Linux build of cudapm1, compiled on an Arch Linux system with a GTX 1660 ti.
Attached Files
File Type: zip cudapm1-cuda111.zip (246.2 KB, 231 views)
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