So the issue is now reproed at NVIDIA and I'm playing with a GK110 feature
called the read-only data cache as an alternative to using the texture unit
(the apparent root cause). It's a slightly different path through the hw.
I doubt it will change anything, but it's worth a shot.
On Sun, Jun 9, 2013 at 8:22 AM, ET <sketchfoot.gmail.com> wrote:
> Nice one Scott! Thanks for sorting this out! :)
>
>
> On 7 June 2013 23:50, Scott Le Grand <varelse2005.gmail.com> wrote:
>
> > All sorts of possible explanations: better binning, different ASICs,
> > different process, dumb luck, etc...
> >
> >
> >
> > On Fri, Jun 7, 2013 at 3:41 PM, filip fratev <filipfratev.yahoo.com>
> > wrote:
> >
> > > I am curious why GTX780 works, but Titan not..i.e. what might be the
> > > specific reason for cuFFT/Titan problem?
> > >
> > > Regards,
> > > F.
> > >
> > >
> > > ________________________________
> > > From: Scott Le Grand <varelse2005.gmail.com>
> > > To: AMBER Mailing List <amber.ambermd.org>
> > > Sent: Saturday, June 8, 2013 1:05 AM
> > > Subject: Re: [AMBER] experiences with EVGA GTX TITAN Superclocked -
> > > memtestG80 - UNDERclocking in Linux ?
> > >
> > >
> > > Jonathan: Oh ye of little faith...
> > >
> > > They just got the thing running at their end, give 'em a some time.
> > CuFFT
> > > is mission critical to CUDA - they'll fix it...
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > > On Fri, Jun 7, 2013 at 2:40 PM, Jonathan Gough
> > > <jonathan.d.gough.gmail.com>wrote:
> > >
> > > > I wonder if could i trade in my titan for a gtx 780...
> > > >
> > > >
> > > > On Fri, Jun 7, 2013 at 5:16 PM, Marek Maly <marek.maly.ujep.cz>
> wrote:
> > > >
> > > > > Thanks Scott for good news !
> > > > >
> > > > > Let's hope that guys from NVIDIA resolve
> > > > > the cuFFT/TITAN problem before the new
> > > > > chip architecture is released :))
> > > > >
> > > > > M.
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > > Dne Fri, 07 Jun 2013 22:45:50 +0200 Scott Le Grand <
> > > > varelse2005.gmail.com>
> > > > > napsal/-a:
> > > > >
> > > > > > Really really interesting...
> > > > > >
> > > > > > I seem to have found a fix for the GB issues on my Titan - not so
> > > > > > surprisingly, it's the same fix as on GTX4xx/GTX5xx...
> > > > > >
> > > > > > But this doesn't yet explain the weirdness with cuFFT so we're
> not
> > > done
> > > > > > here yet...
> > > > > >
> > > > > >
> > > > > >
> > > > > > On Fri, Jun 7, 2013 at 12:48 PM, Jonathan Gough
> > > > > > <jonathan.d.gough.gmail.com>wrote:
> > > > > >
> > > > > >> Good News (maybe)
> > > > > >>
> > > > > >> 1. The nucleosome calculations were reproducible at
> > nstlim=100000
> > > > > >> 2. My new GTX 780 seems to be stable See results below
> > > > > >>
> > > > > >> CentOs 6
> > > > > >> gnu compilers
> > > > > >> Cuda 5.0 and Driver Version: 319.23
> > > > > >> AmberTools version 13.09
> > > > > >> Amber version 12.18
> > > > > >>
> > > > > >> EVGA 06G-P4-2793-KR GeForce GTX TITAN
> > > > > >> GB-Nucleosome
> > > > > >> nucleosome/1/mdout: Etot = -66858.7444 EKtot =
> > > 19709.4492
> > > > > >> EPtot = -86568.1936
> > > > > >> nucleosome/2/mdout: Etot = -66858.7444 EKtot =
> > > 19709.4492
> > > > > >> EPtot = -86568.1936
> > > > > >> nucleosome/3/mdout: Etot = -66858.7444 EKtot =
> > > 19709.4492
> > > > > >> EPtot = -86568.1936
> > > > > >> nucleosome/4/mdout: Etot = -66858.7444 EKtot =
> > > 19709.4492
> > > > > >> EPtot = -86568.1936
> > > > > >>
> > > > > >>
> > > > > >> FWIW: Here is data for GTX 780
> > > > > >> EVGA 03G-P4-2781-KR GeForce GTX 780
> > > > > >> Ran each of the tests at nstlim=100000 4x
> > > > > >>
> > > > > >> Not that I know if there was an issue, but paranoia has set in,
> > and
> > > I
> > > > > >> felt
> > > > > >> the need to be comprehensive
> > > > > >> Everything is looking reproducible.
> > > > > >>
> > > > > >> JAC_production_NPT/1/mdout: Etot = -58221.1921 EKtot =
> > > > > >> 14415.7754 EPtot = -72636.9675
> > > > > >> JAC_production_NPT/2/mdout: Etot = -58221.1921 EKtot =
> > > > > >> 14415.7754 EPtot = -72636.9675
> > > > > >> JAC_production_NPT/3/mdout: Etot = -58221.1921 EKtot =
> > > > > >> 14415.7754 EPtot = -72636.9675
> > > > > >> JAC_production_NPT/4/mdout: Etot = -58221.1921 EKtot =
> > > > > >> 14415.7754 EPtot = -72636.9675
> > > > > >>
> > > > > >> JAC_production_NVE/1/mdout: Etot = -58139.8773 EKtot =
> > > > > >> 14266.4307 EPtot = -72406.3079
> > > > > >> JAC_production_NVE/2/mdout: Etot = -58139.8773 EKtot =
> > > > > >> 14266.4307 EPtot = -72406.3079
> > > > > >> JAC_production_NVE/3/mdout: Etot = -58139.8773 EKtot =
> > > > > >> 14266.4307 EPtot = -72406.3079
> > > > > >> JAC_production_NVE/4/mdout: Etot = -58139.8773 EKtot =
> > > > > >> 14266.4307 EPtot = -72406.3079
> > > > > >>
> > > > > >> FactorIX_production_NVE/1/mdout: Etot = -234189.5802 EKtot
> > =
> > > > > >> 54845.8359 EPtot = -289035.4162
> > > > > >> FactorIX_production_NVE/2/mdout: Etot = -234189.5802 EKtot
> > =
> > > > > >> 54845.8359 EPtot = -289035.4162
> > > > > >> FactorIX_production_NVE/3/mdout: Etot = -234189.5802 EKtot
> > =
> > > > > >> 54845.8359 EPtot = -289035.4162
> > > > > >> FactorIX_production_NVE/4/mdout: Etot = -234189.5802 EKtot
> > =
> > > > > >> 54845.8359 EPtot = -289035.4162
> > > > > >>
> > > > > >> FactorIX_production_NPT/1/mdout: Etot = -234493.4304 EKtot
> > =
> > > > > >> 55062.0156 EPtot = -289555.4460
> > > > > >> FactorIX_production_NPT/2/mdout: Etot = -234493.4304 EKtot
> > =
> > > > > >> 55062.0156 EPtot = -289555.4460
> > > > > >> FactorIX_production_NPT/3/mdout: Etot = -234493.4304 EKtot
> > =
> > > > > >> 55062.0156 EPtot = -289555.4460
> > > > > >> FactorIX_production_NPT/4/mdout: Etot = -234493.4304 EKtot
> > =
> > > > > >> 55062.0156 EPtot = -289555.4460
> > > > > >>
> > > > > >>
> > > > > >> Cellulose_production_NPT/1/mdout: Etot = -441074.6000 EKtot
> > =
> > > > > >> 258388.7500 EPtot = -699463.3500
> > > > > >> Cellulose_production_NPT/2/mdout: Etot = -441074.6000 EKtot
> > =
> > > > > >> 258388.7500 EPtot = -699463.3500
> > > > > >> Cellulose_production_NPT/3/mdout:* *Etot = -441074.6000
> EKtot
> > > =
> > > > > >> 258388.7500 EPtot = -699463.3500
> > > > > >> Cellulose_production_NPT/4/mdout: Etot = -441074.6000 EKtot
> > =
> > > > > >> 258388.7500 EPtot = -699463.3500
> > > > > >>
> > > > > >>
> > > > > >> Cellulose_production_NVE/1/mdout: Etot = -443246.3519 EKtot
> > =
> > > > > >> 258074.3125 EPtot = -701320.6644
> > > > > >> Cellulose_production_NVE/2/mdout: Etot = -443246.3519 EKtot
> > =
> > > > > >> 258074.3125 EPtot = -701320.6644
> > > > > >> Cellulose_production_NVE/3/mdout: Etot = -443246.3519 EKtot
> > =
> > > > > >> 258074.3125 EPtot = -701320.6644
> > > > > >> Cellulose_production_NVE/4/mdout: Etot = -443246.3519 EKtot
> > =
> > > > > >> 258074.3125 EPtot = -701320.6644
> > > > > >>
> > > > > >>
> > > > > >>
> > > > > >>
> > > > > >> On Thu, Jun 6, 2013 at 10:29 AM, Marek Maly <marek.maly.ujep.cz
> >
> > > > wrote:
> > > > > >>
> > > > > >> > OK, let us know your NUCLEOSOME results (this test will take
> > some
> > > > time
> > > > > >> > ...).
> > > > > >> >
> > > > > >> > M.
> > > > > >> >
> > > > > >> >
> > > > > >> >
> > > > > >> > Dne Thu, 06 Jun 2013 16:37:03 +0200 Jonathan Gough
> > > > > >> > <jonathan.d.gough.gmail.com> napsal/-a:
> > > > > >> >
> > > > > >> > > I have the:
> > > > > >> > > EVGA 06G-P4-2793-KR GeForce GTX TITAN SuperClocked Signature
> > 6GB
> > > > > >> 384-bit
> > > > > >> > > GDDR5 PCI Express 3.0 x16 HDCP, SLI Ready Video Card
> > > > > >> > >
> > > > > >> > > and the previously posted results were with bugfix 18.
> > Checking
> > > > GB
> > > > > >> > > nucleosome now
> > > > > >> > >
> > > > > >> > >
> > > > > >> > > On Thu, Jun 6, 2013 at 6:40 AM, Marek Maly <
> > marek.maly.ujep.cz>
> > > > > >> wrote:
> > > > > >> > >
> > > > > >> > >> Welcome in the club :))
> > > > > >> > >>
> > > > > >> > >> First of all do not panic. Scott recently identified and
> > > reported
> > > > > >> > >> some cuFFT "bug" in connection with Titans and sent it to
> > > NVIDIA,
> > > > > >> > >> now we have to wait what the NVIDIA experts answer. There
> is
> > > also
> > > > > >> > >> another
> > > > > >> > >> Amber/Titan issue
> > > > > >> > >> which has some another origin (GB of big systems i.e.
> > > NUCLEOSOME)
> > > > > >> you
> > > > > >> > >> may
> > > > > >> > >> try it
> > > > > >> > >> as well. Amber guys are working perhaps also on that.
> > > > > >> > >>
> > > > > >> > >> So on your place I would wait with RMAing unless you have
> any
> > > > other
> > > > > >> > >> indications
> > > > > >> > >> that your GPU might me damaged. In between you may do some
> > > tests
> > > > of
> > > > > >> this
> > > > > >> > >> GPU with memtestG80.
> > > > > >> > >>
> > > > > >> > >> here is the most recent version:
> > > > > >> > >>
> > > > > >> > >> ---
> > > > > >> > >> memtestG80
> > > > > >> > >> https://github.com/ihaque/memtestG80
> > > > > >> > >> here is the sync fix code
> > > > > >> > >>
> > > > > >> > >>
> > > > > >> >
> > > > > >>
> > > > >
> > > >
> > >
> >
> https://github.com/ihaque/memtestG80/commit/c4336a69fff07945c322d6c7fc40b0b12341cc4c
> > > > > >> > >> ---
> > > > > >> > >>
> > > > > >> > >> BTW which Titan GPU are you using the stock one or the
> > > > superclocked
> > > > > >> one
> > > > > >> > >> ?
> > > > > >> > >>
> > > > > >> > >> Anyway I would recommend you to recompile Amber with the
> > > latests
> > > > > >> > >> Amber 12 patch (bugfix 18) if you did not do it.
> > > > > >> > >>
> > > > > >> > >> M.
> > > > > >> > >>
> > > > > >> > >>
> > > > > >> > >>
> > > > > >> > >>
> > > > > >> > >>
> > > > > >> > >>
> > > > > >> > >>
> > > > > >> > >>
> > > > > >> > >>
> > > > > >> > >>
> > > > > >> > >>
> > > > > >> > >>
> > > > > >> > >> Dne Thu, 06 Jun 2013 12:01:35 +0200 Jonathan Gough
> > > > > >> > >> <jonathan.d.gough.gmail.com> napsal/-a:
> > > > > >> > >>
> > > > > >> > >> > Bad News.
> > > > > >> > >> >
> > > > > >> > >> > I ran each set of tests 4 times, nstlim=100000. FactorIX
> > was
> > > > the
> > > > > >> only
> > > > > >> > >> one
> > > > > >> > >> > that gave consistent results. Again I had a few that just
> > > died
> > > > > >> without
> > > > > >> > >> > any
> > > > > >> > >> > error messages.
> > > > > >> > >> >
> > > > > >> > >> > CentOs 6
> > > > > >> > >> > gnu compilers
> > > > > >> > >> > Cuda 5.0 and Driver Version: 319.23
> > > > > >> > >> > AmberTools version 13.09
> > > > > >> > >> > Amber version 12.18
> > > > > >> > >> >
> > > > > >> > >> > Cellulose_production_NVE/1/mdout: Etot =
> > -443246.3206EKtot
> > > > > >> =
> > > > > >> > >> > 258074.3438 EPtot = -701320.6644
> > > > > >> > >> > Cellulose_production_NVE/2/mdout Died at 4000 steps - no
> > > error
> > > > > >> > >> message.
> > > > > >> > >> > Cellulose_production_NVE/3/mdout: Etot = -443238.0345
> > > > > >> EKtot =
> > > > > >> > >> > 257651.0625 EPtot = -700889.0970
> > > > > >> > >> > Cellulose_production_NVE/4/mdout: Etot = -443246.3206
> > > > > >> EKtot =
> > > > > >> > >> > 258074.3438 EPtot = -701320.6644
> > > > > >> > >> >
> > > > > >> > >> > Cellulose_production_NPT/1/mdout: Etot = -441009.1612
> > > > > >> EKtot =
> > > > > >> > >> > 257571.2031 EPtot = -698580.3643
> > > > > >> > >> > Cellulose_production_NPT/2/mdout: Etot = -440947.3717
> > > > > >> EKtot =
> > > > > >> > >> > 257723.3750 EPtot = -698670.7467
> > > > > >> > >> > Cellulose_production_NPT/3/mdout: Etot = -441024.3259
> > > > > >> EKtot =
> > > > > >> > >> > 257406.5781 EPtot = -698430.9041
> > > > > >> > >> > Cellulose_production_NPT/4/mdout: Etot = -440970.6005
> > > > > >> EKtot =
> > > > > >> > >> > 257756.1250 EPtot = -698726.7255
> > > > > >> > >> >
> > > > > >> > >> > FactorIX_production_NVE/1/mdout: Etot = -234189.5802
> > > > > >> EKtot =
> > > > > >> > >> > 54845.8359 EPtot = -289035.4162
> > > > > >> > >> > FactorIX_production_NVE/2/mdout: Etot = -234189.5802
> > > > > >> EKtot =
> > > > > >> > >> > 54845.8359 EPtot = -289035.4162
> > > > > >> > >> > FactorIX_production_NVE/3/mdout: Etot = -234189.5802
> > > > > >> EKtot =
> > > > > >> > >> > 54845.8359 EPtot = -289035.4162
> > > > > >> > >> > FactorIX_production_NVE/4/mdout: Etot = -234189.5802
> > > > > >> EKtot =
> > > > > >> > >> > 54845.8359 EPtot = -289035.4162
> > > > > >> > >> >
> > > > > >> > >> > FactorIX_production_NPT/1/mdout: Etot = -234493.4304
> > > > > >> EKtot =
> > > > > >> > >> > 55062.0156 EPtot = -289555.4460
> > > > > >> > >> > FactorIX_production_NPT/2/mdout: Etot = -234493.4304
> > > > > >> EKtot =
> > > > > >> > >> > 55062.0156 EPtot = -289555.4460
> > > > > >> > >> > FactorIX_production_NPT/3/mdout: Etot = -234493.4304
> > > > > >> EKtot =
> > > > > >> > >> > 55062.0156 EPtot = -289555.4460
> > > > > >> > >> > FactorIX_production_NPT/4/mdout: Etot = -234493.4304
> > > > > >> EKtot =
> > > > > >> > >> > 55062.0156 EPtot = -289555.4460
> > > > > >> > >> >
> > > > > >> > >> > JAC_production_NVE/1/mdout: Etot = -58141.0647
> EKtot
> > > =
> > > > > >> > >> > 14347.6699 EPtot = -72488.7346
> > > > > >> > >> > JAC_production_NVE/2/mdout: Etot = -58141.4961
> EKtot
> > > =
> > > > > >> > >> > 14320.1465 EPtot = -72461.6425
> > > > > >> > >> > JAC_production_NVE/3/mdout: Died at 48000 steps
> > > > > >> > >> > JAC_production_NVE/4/mdout: Etot = -58141.6938
> EKtot
> > > =
> > > > > >> > >> > 14257.2305 EPtot = -72398.9243
> > > > > >> > >> >
> > > > > >> > >> > JAC_production_NPT/1/mdout: Died at 78000 steps
> > > > > >> > >> > JAC_production_NPT/2/mdout: Etot = -58206.6103
> EKtot
> > > =
> > > > > >> > >> > 14384.7959 EPtot = -72591.4062
> > > > > >> > >> > JAC_production_NPT/3/mdout: Etot = -58211.2469
> EKtot
> > > =
> > > > > >> > >> > 14454.1592 EPtot = -72665.4061
> > > > > >> > >> > JAC_production_NPT/1/mdout: Died at 89000 steps
> > > > > >> > >> >
> > > > > >> > >> >
> > > > > >> > >> > Any recommendations on what to do? Send the card back?
> > Update
> > > > > >> drivers?
> > > > > >> > >> > Update Cuda?
> > > > > >> > >> >
> > > > > >> > >> >
> > > > > >> > >> >
> > > > > >> > >> >
> > > > > >> > >> > On Wed, Jun 5, 2013 at 6:45 PM, Marek Maly <
> > > marek.maly.ujep.cz
> > > > >
> > > > > >> > wrote:
> > > > > >> > >> >
> > > > > >> > >> >> Yes you got it,
> > > > > >> > >> >>
> > > > > >> > >> >> one more thing. Check carefully the benchmark mdin files
> > and
> > > > > >> > >> >> if you see there "ig=-1" just delete this, to ensure,
> that
> > > > > >> > >> >> both runs of the given test will run using the same
> random
> > > > seed.
> > > > > >> > >> >>
> > > > > >> > >> >> (As I remember I found it just in one or two tests,
> don't
> > > > > >> remember
> > > > > >> > >> which
> > > > > >> > >> >> one).
> > > > > >> > >> >>
> > > > > >> > >> >> Let us know your results i.e. if all the tests (JAC
> > NVE/NPT,
> > > > > >> > >> FACTOR_IX
> > > > > >> > >> >> NVE/NPT etc.)
> > > > > >> > >> >> successfully finished all 100K steps (in both runs) and
> if
> > > > > >> moreover
> > > > > >> > >> the
> > > > > >> > >> >> results from both runs
> > > > > >> > >> >> are identical (just check the final energy).
> > > > > >> > >> >>
> > > > > >> > >> >> In case of any error (writen in mdout file or in
> standard
> > > > output
> > > > > >> > >> (screen
> > > > > >> > >> >> or nohup.out ...) ), please report it here as well.
> > > > > >> > >> >>
> > > > > >> > >> >> Thanks,
> > > > > >> > >> >>
> > > > > >> > >> >> M.
> > > > > >> > >> >>
> > > > > >> > >> >>
> > > > > >> > >> >>
> > > > > >> > >> >>
> > > > > >> > >> >>
> > > > > >> > >> >> Dne Thu, 06 Jun 2013 00:34:39 +0200 Jonathan Gough
> > > > > >> > >> >> <jonathan.d.gough.gmail.com> napsal/-a:
> > > > > >> > >> >>
> > > > > >> > >> >> > I know I'm late in the game, but I have been reading
> > some
> > > of
> > > > > >> these
> > > > > >> > >> two
> > > > > >> > >> >> > Titan threads. I'm now attempting to test my 1 Titan
> > card
> > > > > >> and I
> > > > > >> > >> want
> > > > > >> > >> >> to
> > > > > >> > >> >> > make sure I understand what I aught to be doing.
> > > > > >> > >> >> >
> > > > > >> > >> >> > Download the Amber_GPU_Benchmark_Suite
> > > > > >> > >> >> > in mdin, change nstlim=100000
> > > > > >> > >> >> > and then run the 6 benchmarks at least 2 times each
> > > > > >> > >> >> >
> > > > > >> > >> >> > yes?
> > > > > >> > >> >> >
> > > > > >> > >> >> > The issue that we have had is that simulations would
> > just
> > > > > >> > >> prematurely
> > > > > >> > >> >> > stop.
> > > > > >> > >> >> > We didn't see any error messages in the mdout file
> > though,
> > > > > >> they
> > > > > >> > >> just
> > > > > >> > >> >> > stopped.
> > > > > >> > >> >> >
> > > > > >> > >> >> > Were using Cuda 5.0 and Driver Version: 319.23
> > > > > >> > >> >> >
> > > > > >> > >> >> >
> > > > > >> > >> >> >
> > > > > >> > >> >> > On Wed, Jun 5, 2013 at 1:29 PM, Marek Maly
> > > > > >> <marek.maly.ujep.cz>
> > > > > >> > >> wrote:
> > > > > >> > >> >> >
> > > > > >> > >> >> >> Hi Scott,
> > > > > >> > >> >> >>
> > > > > >> > >> >> >> thanks for update ! Let's see what will be reaction
> > from
> > > > > >> NVIDIA.
> > > > > >> > >> >> >> In the worst case let's hope that also some other
> > > > > >> (NON-NVIDIA)
> > > > > >> > >> "GPU
> > > > > >> > >> >> FFT
> > > > > >> > >> >> >> library"
> > > > > >> > >> >> >> alternatives exists (to be compiled/used
> alternatively
> > > with
> > > > > >> > >> >> pmemd.cuda)
> > > > > >> > >> >> >>
> > > > > >> > >> >> >> BTW I just found this perhaps interesting article (I
> > only
> > > > > >> list
> > > > > >> the
> > > > > >> > >> >> >> supplementary part. ):
> > > > > >> > >> >> >>
> > > > > >> > >> >> >>
> > > > > >>
> http://www.computer.org/csdl/trans/td/preprint/06470608-abs.html
> > > > > >> > >> >> >>
> > > > > >> > >> >> >> OK, meanwhile I finished my experiment/tests with
> > > swapping
> > > > my
> > > > > >> two
> > > > > >> > >> >> titans
> > > > > >> > >> >> >> in slots. As you can see below it did not solve the
> > > > problems
> > > > > >> on
> > > > > >> my
> > > > > >> > >> >> >> "less stable" titan, but on the other hand there is
> > > > > >> significant
> > > > > >> > >> >> >> improvement.
> > > > > >> > >> >> >> I will now try with just "my less stable" GPU
> plugged
> > on
> > > > > >> > >> >> motherboard to
> > > > > >> > >> >> >> eventually confirm that it's less stability has
> origin
> > in
> > > > > >> it's
> > > > > >> > >> higher
> > > > > >> > >> >> >> sensitivity
> > > > > >> > >> >> >> to dual GPU configuration (OR just to dual GPU config
> > > with
> > > > > >> another
> > > > > >> > >> >> Titan
> > > > > >> > >> >> >> maybe that
> > > > > >> > >> >> >> with GTX 580/680 it will be OK or at least better
> than
> > > > with 2
> > > > > >> > >> >> Titans).
> > > > > >> > >> >> >>
> > > > > >> > >> >> >> M.
> > > > > >> > >> >> >>
> > > > > >> > >> >> >>
> > > > > >> > >> >> >> SIMULTANEOUS TEST (BOTH GPUS) running at the same
> time
> > > > > >> > >> >> >>
> > > > > >> > >> >> >> density (100K steps, NPT, restrained solute)
> > > > > >> > >> >> >> prod1 and prod2 (250K steps, NPT)
> > > > > >> > >> >> >>
> > > > > >> > >> >> >> TITAN_0, TITAN_1 now rather identify PCI slots than
> > given
> > > > > >> cards.
> > > > > >> > >> >> >>
> > > > > >> > >> >> >> all the errs I have obtained here is here just:
> > > > > >> > >> >> >>
> > > > > >> > >> >> >> -----
> > > > > >> > >> >> >> cudaMemcpy GpuBuffer::Download failed unspecified
> > launch
> > > > > >> failure
> > > > > >> > >> >> >> -----
> > > > > >> > >> >> >>
> > > > > >> > >> >> >> #1 ORIGINAL CONFIGURATION
> > > > > >> > >> >> >>
> > > > > >> > >> >> >> density prod1 prod2
> > > > > >> > >> >> >>
> > > > > >> > >> >> >> TITAN_0
> > > > > >> > >> >> >> -297755.2479 -299267.1086 65K
> > > > > >> > >> >> >> 20K -299411.2631 100K
> > > > > >> > >> >> >>
> > > > > >> > >> >> >> TITAN_1
> > > > > >> > >> >> >> -297906.5447 -298657.3725 -298683.8965
> > > > > >> > >> >> >> -297906.5447 -298657.3725 -298683.8965
> > > > > >> > >> >> >>
> > > > > >> > >> >> >>
> > > > > >> > >> >> >>
> > > > > >> > >> >> >>
> > > > > >> > >> >> >> #2 AFTER GPU SWAPPING (respect to PCI slots)
> > > > > >> > >> >> >>
> > > > > >> > >> >> >> density prod1 prod2
> > > > > >> > >> >> >>
> > > > > >> > >> >> >> TITAN_0 (so these are results of the GPU named before
> > as
> > > > > >> TITAN_1)
> > > > > >> > >> >> >> -297906.5447 -298657.3725 -298683.8965
> > > > > >> > >> >> >> -297906.5447 -298657.3725 -298683.8965
> > > > > >> > >> >> >>
> > > > > >> > >> >> >> TITAN_1 (so these are results of the GPU named before
> > as
> > > > > >> TITAN_0)
> > > > > >> > >> >> >> -297906.5447 240K -298764.5294
> > > > > >> > >> >> >> -297752.2836 -298997.8891 -299610.3812
> > > > > >> > >> >> >>
> > > > > >> > >> >> >>
> > > > > >> > >> >> >>
> > > > > >> > >> >> >>
> > > > > >> > >> >> >>
> > > > > >> > >> >> >>
> > > > > >> > >> >> >>
> > > > > >> > >> >> >> Dne Wed, 05 Jun 2013 18:15:48 +0200 Scott Le Grand
> > > > > >> > >> >> >> <varelse2005.gmail.com>
> > > > > >> > >> >> >> napsal/-a:
> > > > > >> > >> >> >>
> > > > > >> > >> >> >> > Filip,
> > > > > >> > >> >> >> > What's happening on Titan can take a while to
> > > trigger. I
> > > > > >> have
> > > > > >> > >> >> >> delivered
> > > > > >> > >> >> >> > a
> > > > > >> > >> >> >> > repro to NVIDIA that shows exactly what's happening
> > but
> > > > > >> it's
> > > > > >> up
> > > > > >> > >> to
> > > > > >> > >> >> >> them
> > > > > >> > >> >> >> > to
> > > > > >> > >> >> >> > explain why because its occurring inside cuFFT.
> > That's
> > > > why
> > > > > >> you
> > > > > >> > >> >> need
> > > > > >> > >> >> >> to
> > > > > >> > >> >> >> > run
> > > > > >> > >> >> >> > at least 100K iterations to see a single
> occurrence.
> > > > > >> > >> >> >> >
> > > > > >> > >> >> >> > There's a second issue that's happening with large
> GB
> > > > > >> > >> simulations,
> > > > > >> > >> >> but
> > > > > >> > >> >> >> > that
> > > > > >> > >> >> >> > one is even harder to trap. That doesn't mean it
> > isn't
> > > > > >> > >> happening,
> > > > > >> > >> >> >> just
> > > > > >> > >> >> >> > that it's on the very edge of doing so on Titan.
> > > > > >> > >> >> >> >
> > > > > >> > >> >> >> > Thankfully, I have not been able to trigger either
> > bug
> > > on
> > > > > >> GK104
> > > > > >> > >> or
> > > > > >> > >> >> >> K20...
> > > > > >> > >> >> >> > _______________________________________________
> > > > > >> > >> >> >> > AMBER mailing list
> > > > > >> > >> >> >> > AMBER.ambermd.org
> > > > > >> > >> >> >> > http://lists.ambermd.org/mailman/listinfo/amber
> > > > > >> > >> >> >> >
> > > > > >> > >> >> >> > __________ Informace od ESET NOD32 Antivirus, verze
> > > > > >> databaze
> > > > > >> > >> 8415
> > > > > >> > >> >> >> > (20130605) __________
> > > > > >> > >> >> >> >
> > > > > >> > >> >> >> > Tuto zpravu proveril ESET NOD32 Antivirus.
> > > > > >> > >> >> >> >
> > > > > >> > >> >> >> > http://www.eset.cz
> > > > > >> > >> >> >> >
> > > > > >> > >> >> >> >
> > > > > >> > >> >> >> >
> > > > > >> > >> >> >>
> > > > > >> > >> >> >>
> > > > > >> > >> >> >> --
> > > > > >> > >> >> >> Tato zpráva byla vytvořena převratným poštovním
> > klientem
> > > > > >> Opery:
> > > > > >> > >> >> >> http://www.opera.com/mail/
> > > > > >> > >> >> >>
> > > > > >> > >> >> >> _______________________________________________
> > > > > >> > >> >> >> AMBER mailing list
> > > > > >> > >> >> >> AMBER.ambermd.org
> > > > > >> > >> >> >> http://lists.ambermd.org/mailman/listinfo/amber
> > > > > >> > >> >> >>
> > > > > >> > >> >> > _______________________________________________
> > > > > >> > >> >> > AMBER mailing list
> > > > > >> > >> >> > AMBER.ambermd.org
> > > > > >> > >> >> > http://lists.ambermd.org/mailman/listinfo/amber
> > > > > >> > >> >> >
> > > > > >> > >> >> > __________ Informace od ESET NOD32 Antivirus, verze
> > > databaze
> > > > > >> 8416
> > > > > >> > >> >> > (20130605) __________
> > > > > >> > >> >> >
> > > > > >> > >> >> > Tuto zpravu proveril ESET NOD32 Antivirus.
> > > > > >> > >> >> >
> > > > > >> > >> >> > http://www.eset.cz
> > > > > >> > >> >> >
> > > > > >> > >> >> >
> > > > > >> > >> >> >
> > > > > >> > >> >>
> > > > > >> > >> >>
> > > > > >> > >> >> --
> > > > > >> > >> >> Tato zpráva byla vytvořena převratným poštovním klientem
> > > > Opery:
> > > > > >> > >> >> http://www.opera.com/mail/
> > > > > >> > >> >>
> > > > > >> > >> >> _______________________________________________
> > > > > >> > >> >> AMBER mailing list
> > > > > >> > >> >> AMBER.ambermd.org
> > > > > >> > >> >> http://lists.ambermd.org/mailman/listinfo/amber
> > > > > >> > >> >>
> > > > > >> > >> > _______________________________________________
> > > > > >> > >> > AMBER mailing list
> > > > > >> > >> > AMBER.ambermd.org
> > > > > >> > >> > http://lists.ambermd.org/mailman/listinfo/amber
> > > > > >> > >> >
> > > > > >> > >> > __________ Informace od ESET NOD32 Antivirus, verze
> > databaze
> > > > 8417
> > > > > >> > >> > (20130606) __________
> > > > > >> > >> >
> > > > > >> > >> > Tuto zpravu proveril ESET NOD32 Antivirus.
> > > > > >> > >> >
> > > > > >> > >> > http://www.eset.cz
> > > > > >> > >> >
> > > > > >> > >> >
> > > > > >> > >> >
> > > > > >> > >>
> > > > > >> > >>
> > > > > >> > >> --
> > > > > >> > >> Tato zpráva byla vytvořena převratným poštovním klientem
> > Opery:
> > > > > >> > >> http://www.opera.com/mail/
> > > > > >> > >>
> > > > > >> > >> _______________________________________________
> > > > > >> > >> AMBER mailing list
> > > > > >> > >> AMBER.ambermd.org
> > > > > >> > >> http://lists.ambermd.org/mailman/listinfo/amber
> > > > > >> > >>
> > > > > >> > > _______________________________________________
> > > > > >> > > AMBER mailing list
> > > > > >> > > AMBER.ambermd.org
> > > > > >> > > http://lists.ambermd.org/mailman/listinfo/amber
> > > > > >> > >
> > > > > >> > > __________ Informace od ESET NOD32 Antivirus, verze databaze
> > > 8418
> > > > > >> > > (20130606) __________
> > > > > >> > >
> > > > > >> > > Tuto zpravu proveril ESET NOD32 Antivirus.
> > > > > >> > >
> > > > > >> > > http://www.eset.cz
> > > > > >> > >
> > > > > >> > >
> > > > > >> > >
> > > > > >> >
> > > > > >> >
> > > > > >> > --
> > > > > >> > Tato zpráva byla vytvořena převratným poštovním klientem
> Opery:
> > > > > >> > http://www.opera.com/mail/
> > > > > >> >
> > > > > >> > _______________________________________________
> > > > > >> > AMBER mailing list
> > > > > >> > AMBER.ambermd.org
> > > > > >> > http://lists.ambermd.org/mailman/listinfo/amber
> > > > > >> >
> > > > > >> _______________________________________________
> > > > > >> AMBER mailing list
> > > > > >> AMBER.ambermd.org
> > > > > >> http://lists.ambermd.org/mailman/listinfo/amber
> > > > > >>
> > > > > > _______________________________________________
> > > > > > AMBER mailing list
> > > > > > AMBER.ambermd.org
> > > > > > http://lists.ambermd.org/mailman/listinfo/amber
> > > > > >
> > > > > > __________ Informace od ESET NOD32 Antivirus, verze databaze 8423
> > > > > > (20130607) __________
> > > > > >
> > > > > > Tuto zpravu proveril ESET NOD32 Antivirus.
> > > > > >
> > > > > > http://www.eset.cz
> > > > > >
> > > > > >
> > > > > >
> > > > >
> > > > >
> > > > > --
> > > > > Tato zpráva byla vytvořena převratným poštovním klientem Opery:
> > > > > http://www.opera.com/mail/
> > > > >
> > > > > _______________________________________________
> > > > > AMBER mailing list
> > > > > AMBER.ambermd.org
> > > > > http://lists.ambermd.org/mailman/listinfo/amber
> > > > >
> > > > _______________________________________________
> > > > AMBER mailing list
> > > > AMBER.ambermd.org
> > > > http://lists.ambermd.org/mailman/listinfo/amber
> > > >
> > > _______________________________________________
> > > AMBER mailing list
> > > AMBER.ambermd.org
> > > http://lists.ambermd.org/mailman/listinfo/amber
> > > _______________________________________________
> > > AMBER mailing list
> > > AMBER.ambermd.org
> > > http://lists.ambermd.org/mailman/listinfo/amber
> > >
> > _______________________________________________
> > AMBER mailing list
> > AMBER.ambermd.org
> > http://lists.ambermd.org/mailman/listinfo/amber
> >
> _______________________________________________
> AMBER mailing list
> AMBER.ambermd.org
> http://lists.ambermd.org/mailman/listinfo/amber
>
_______________________________________________
AMBER mailing list
AMBER.ambermd.org
http://lists.ambermd.org/mailman/listinfo/amber
Received on Mon Jun 10 2013 - 22:00:03 PDT
