Win10 Pro 64-bit CU, Kepler 384SP GT630/730 1GB DDR3, BOINC PrimeGrid, "computation error"?

[VirtualLarry]

Trying to figure out what's going on here.

When I built this Ryzen rig, I was using a GTX 1050ti 4GB card.

Well, in the course of attempting to overclock this rig, I kept running into "black screens".

I thought it could be my video card, so I threw in a passive GT630/730 1GB DDR3 card. Which surprised me, by running 4K60 over the HDMI1.4 port. (Not 2.0)

But then when I enabled new tasks from PrimeGrid, and some of them were GPU tasks, when the machine went idle for a few minutes and the GPU tasks started, they all errored instantly. (They were primarily smaller Genefer tasks.)

Do those not run on Kepler? Or do I have an NV driver issue?

If I go into NV Control Panel, it reports 382.05 drivers, I think. I don't think that those are the newest, I think those are ones that Windows 10 auto-installed.

I don't get it, since this is Kepler and not Fermi, and still supported by current NV drivers.

 

[Ken g6]

Apparently, a GT 630 doesn't have double-precision. PPS Sieve should work. 😉

 

[VirtualLarry]

Thanks. I thought Genefer only needed DP on the larger ones, but if they all do, then that makes sense.

I'll put my prefs on PPS Sieve.

 

[TennesseeTony]

As I discovered when trying to get that AMD workstation card a few months back to live up to its DP potential, most of the DP gets offloaded to the CPU.

From Michael Goetz-One thing to remember is that ONLY GFN 21 and GFN 22, amongst all the apps at PrimeGrid, still use double precision. All the other GFN apps, as well as AP27 and PPS-Sieve, do not use double precision at all.