Matt Harvey at GPUGrid has posted

Important news for GTX980 owners

If you are crunching with a GTX980 on Windows, please update your driver to 344.16

I am seeing a very high error rate for 980s with the initial driver release, 344.11

Unfortunately, driver 344.16 appears to be a hotfix for GTX 980/970 cards only, and (according to the download page) doesn't support older cards. That would mean it can't be recommended to mix these new cards with older cards in the same system, until NVidia can re-unify their driver packages.

Thanks, I'll look out for issues as I'm running at GTX670 alongside a 980. However I didn't notice any problems with 344.11 and 344.16 seems OK too.

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Hi Richard,
There is an additional problem with Nvidias drivers, they break CUDA for 'some' programs that use CUDA acceleration:-/

I have 2 graphics conversion programs that simply fail to see a GTX9xx card as compute capable.

The 'good' news is that seemingly its NOT a problem that affects BOINC, at least not if you have installed CUDA 6.5 [which requires a pre-installation of Visual Studio 13] as CUDA 6.5 latest update seems to install an updated driver,
that is NOT avail for D/L on Nvidia's website

The not so good news is that running BOINC and watching a video with VLC causes
a computer lockup that requires a hard reboot.

Add to this that IF you have a GTX9xx series card NO prior drivers will install. So you cannot just roll back to an earlier driver.

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Cliff,
Been there, Done that, Still no damm T shirt!

Well, I meant my comments in the context of running BOINC - for other programs, you'll have to refer to their support system. For BOINC, no further CUDA installation should be required except the runtime support included with the NVidia drivers.

@ Dr Grey,

Are you saying that your GTX 670 is running correctly under the 344.16 drivers? I'll check whether it will install on my GTX 670 only machine after current tests are complete.

344.16 did not recognize my 460's as compatible hardware; failed system requirements check.

Lt

[edit] and Nvidia's Supported Products tab says only the 900 series, 980/970, are compatible with it.

Well, I meant my comments in the context of running BOINC - for other programs, you'll have to refer to their support system. For BOINC, no further CUDA installation should be required except the runtime support included with the NVidia drivers.

@ Dr Grey,

Are you saying that your GTX 670 is running correctly under the 344.16 drivers? I'll check whether it will install on my GTX 670 only machine after current tests are complete.

Hi Richard. Yes the 670 is in my second slot and seems to be crunching away without any issues.

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Hi Richard. Yes the 670 is in my second slot and seems to be crunching away without any issues.

According to your computer details your i7-3770K has 2 GTX980s with driver 344.16, the GTX 670 is in the Q8200 with driver 340.52

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Grant
Darwin NT

Hi Richard. Yes the 670 is in my second slot and seems to be crunching away without any issues.

According to your computer details your i7-3770K has 2 GTX980s with driver 344.16, the GTX 670 is in the Q8200 with driver 340.52

Grant if you look at his Stderr outputs for GPU tasks you'll see that the rig is equipped as stated. ;-)

My backup rig shows as having 3 GTX 560's though 2 of those GPU's are GTX 550Ti's.

Cheers.

Hi Richard. Yes the 670 is in my second slot and seems to be crunching away without any issues.

According to your computer details your i7-3770K has 2 GTX980s with driver 344.16, the GTX 670 is in the Q8200 with driver 340.52

Grant if you look at his Stderr outputs for GPU tasks you'll see that the rig is equipped as stated. ;-)

My backup rig shows as having 3 GTX 560's though 2 of those GPU's are GTX 550Ti's.

Cheers.

Hmm.
So there's a glitch with the updating of the computer specs info.
Another item for Richard to forward for further investigation.

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Grant
Darwin NT

Hmm.
So there's a glitch with the updating of the computer specs info.
Another item for Richard to forward for further investigation.

It has always just reported the 1st card based on alphabetical order of the manufacturers name, hence my ASUS GTX 560 gets picked over the 2 Gainward GTX 550Ti's Grant. ;-)

[edit] If the 560 was a MSI then it would show as 3x 550Ti's.

Cheers.

Hi Richard. Yes the 670 is in my second slot and seems to be crunching away without any issues.

According to your computer details your i7-3770K has 2 GTX980s with driver 344.16, the GTX 670 is in the Q8200 with driver 340.52

Yes, the 3770K has a 980 and a 670, whereas the Q8200 just has a 670. I wish I had 2 980s :)

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Hi Richard. Yes the 670 is in my second slot and seems to be crunching away without any issues.

According to your computer details your i7-3770K has 2 GTX980s with driver 344.16, the GTX 670 is in the Q8200 with driver 340.52

Yes, the 3770K has a 980 and a 670, whereas the Q8200 just has a 670. I wish I had 2 980s :)

I wish I could afford one.
Such is life.

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Grant
Darwin NT

Hmm.
So there's a glitch with the updating of the computer specs info.
Another item for Richard to forward for further investigation.

It has always just reported the 1st card based on alphabetical order of the manufacturers name, hence my ASUS GTX 560 gets picked over the 2 Gainward GTX 550Ti's Grant. ;-)

[edit] If the 560 was a MSI then it would show as 3x 550Ti's.

Cheers.

I note the wink ;)

Actually, it's always reported the 'best' (most capable) card, and then given the total card count as if they were all clones of that best card (there's a formal definition of 'best' buried somewhere in the code, and I quoted it once - but I can't be bothered to go digging at this time of night).

I certainly intend to comment on this issue, following this week's workshop - but that's a different topic, and a much more serious essay to be written.

Hmm.
So there's a glitch with the updating of the computer specs info.
Another item for Richard to forward for further investigation.

It has always just reported the 1st card based on alphabetical order of the manufacturers name, hence my ASUS GTX 560 gets picked over the 2 Gainward GTX 550Ti's Grant. ;-)

[edit] If the 560 was a MSI then it would show as 3x 550Ti's.

Cheers.

I note the wink ;)

Actually, it's always reported the 'best' (most capable) card, and then given the total card count as if they were all clones of that best card (there's a formal definition of 'best' buried somewhere in the code, and I quoted it once - but I can't be bothered to go digging at this time of night).

I certainly intend to comment on this issue, following this week's workshop - but that's a different topic, and a much more serious essay to be written.

With that same rig Richard when it was setup similarly but with 2 9800GT's and a 9800GTX+ it got listed as 3 9800GT's because of the manufacturers names, as was explained to me by someone in the know here back then (I just can't remember who it was now), and the most powerful card in the combo's has always sat in the 4x PCI-e slot in both cases. :-)

[edit] In my case, maybe that's because I've only used cards from the same series.

Cheers.