On Wed, Sep 05, 2012 at 08:07:08AM -0400, Jason Swails wrote:
> On Wed, Sep 5, 2012 at 6:58 AM, Thomas Zeiser <
> thomas.zeiser.rrze.uni-erlangen.de> wrote:
>
> > Hello,
> >
> > according to the web page, NVidia GPUs with Hardware Version 1.3
> > should only support SPDP (and DPDP) but not the new SPFP mode.
> >
> > However, if a SPFP binary is run on a M1060 card which is supposed
> > to be HW-1.3, pmemd.cuda does not abort. (At least not for
> > Cellulose NPT).
> >
> > What does that mean?
> > (1) SPFP is supported on HW-1.3, or
> > (2) there is a bug in pmemd.cuda not aborting if SPFP is detected
> > on HW-1.3, or
> > (3) pmemd.cuda automatically switches (at runtime) to correct a non-SPFP
> > branch for HW-1.3 despite being compiled with default options
> > and mentioning SPFP
> > (4) SPFP is only used in parts which are not relevant for Cellulose
> > NPT, thus, everything is o.k. for this specific case
> >
>
> Do the SPFP tests pass with the 1.3 card?
I run the serial tests ... many of them (64) pass, some (12)
probably show minor round-off effects, and a couple of tests did
not finish within a few minutes - thus, I killed these.
Full details are attached.
Best regards,
Thomas Zeiser
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Received on Wed Sep 05 2012 - 13:30:03 PDT
