Cuda 5.5 is a 5-10% perf regression relative to Cuda 5
On Nov 18, 2013 8:28 PM, "Ross Walker" <ross.rosswalker.co.uk> wrote:
> Hi Wei,
>
> This happens when the driver you have loaded does not match the version of
> cuda, and importantly the cuda runtime library. I.e. NVIDIA has minimum
> driver requirements for each version of CUDA. The 304 driver sounds
> ancient to me. Not sure where you are finding that one from. I doubt it
> works for anything beyond cuda 5.0 which is likely the source of your
> problem.
>
> Note AMBER also has a minimum requirement with the latest GPUs (700
> series) of 319.60 (recommended) or 325.15 (which is actually older than
> 319.60). I have not tried the 331 branch which is brand new and completely
> untested. Hopefully the fixes in the 319 and 325 trees got propogated into
> the 331 tree but you will likely be the first person trying it.
>
> Where did you see 304 being recommended? - I'll let NVIDIA know to fix
> their website.
>
> All the best
> Ross
>
>
>
> On 11/18/13 3:35 PM, "wei zhang" <zhangwee.yahoo.com> wrote:
>
> >Thanks! Jason.
> >Using 331.20 indeed solved the problem.
> >A bit supprise though.. ( both 331.20 and 304.1160 are the latest
> >version released on Nov6, 2013, while the recommanded one did not work
> >for some reason)
> >
> >Best regards,
> >Wei
> >
> >
> >________________________________
> > From: Jason Swails <jason.swails.gmail.com>
> >To: wei zhang <zhangwee.yahoo.com>; AMBER Mailing List
> ><amber.ambermd.org>
> >Sent: Monday, November 18, 2013 4:32 PM
> >Subject: Re: [AMBER] CUDA driver insufficient
> >
> >
> >
> >On Mon, Nov 18, 2013 at 5:08 PM, wei zhang <zhangwee.yahoo.com> wrote:
> >
> >Dear All,
> >>
> >>I am try to compile AMBER12 on a Dell-Precision R5500n machine.
> >>It have a single tesla C2075 GPU.
> >>Everything seems OK untill "make test.cuda" retuned a bunch of errors
> >>indicating" CUDA driver version is insufficient for CUDA runtime version"
> >>
> >>I used the latest CUDA-5.5 toolkits, and the NVIDIA recommadered driver:
> >>Linux x64 (AMD64/EM64T) Display Driver (version: 304.1160).
> >>
> >>Could anyone provide some hints? should I use a older CUDA?
> >>
> >
> >No, you should use a later driver. There were issues with drivers before
> >325.15 for certain hardware, so there was a check put in to make sure
> >that was the version driver being used.
> >
> >I believe the C2075 is fine with the 304.1160 drivers (maybe). If you
> >can't upgrade the driver for whatever reason, then you can always comment
> >out the driver version check in gpu.cpp and recompile (but I would
> >suggest trying to get the updated driver, first).
> >
> >Good luck,
> >Jason
> >--
> >
> >Jason M. Swails
> >BioMaPS,
> >Rutgers University
> >Postdoctoral Researcher
> >_______________________________________________
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> >AMBER.ambermd.org
> >http://lists.ambermd.org/mailman/listinfo/amber
>
>
>
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Received on Mon Nov 18 2013 - 21:30:02 PST
