Thanks for the info Ross! :)
Just to clarify. When you say single GPU runs, do you mean that there is
only one card in the machine, or does this also include two GPUs not
working together, but performing a solo run each. i.e. not communicating
with each other.
Also what number exactly counts as a low value of ntpr, ntwr, ntwx, ntwe or
ntwv? Is 250 ok?
Additionally, could you let me know what bandwidth value I need to have a
minimum of to run two GPUs in a machine that are not working together?
Br,
g
On 9 June 2013 18:02, Ross Walker <ross.rosswalker.co.uk> wrote:
> Hi G,
>
> For single GPU runs it should not have a huge impact on performance. Where
> it will impact is if you set ntpr, ntwr, ntwx, ntwe or ntwv to low values.
> Beyond that as long as you don't try to run multi GPU runs it should run
> quite well.
>
> All the best
> Ross
>
>
>
> On 6/9/13 7:46 AM, "ET" <sketchfoot.gmail.com> wrote:
>
> >Hi all,
> >
> >I've got a single TITAN set up on a relatively low machine as we have run
> >out of slots on our better machines.
> >
> >I was a bit worried about the bandwidth test obtained from on the machine
> >which seemed a bit on the low side:
> >
> >#########################################
> >[CUDA Bandwidth Test] - Starting...
> >Running on...
> >
> > Device 0: GeForce GTX TITAN
> > Quick Mode
> >
> > Host to Device Bandwidth, 1 Device(s)
> > PINNED Memory Transfers
> > Transfer Size (Bytes) Bandwidth(MB/s)
> > 33554432 3805.0
> >
> > Device to Host Bandwidth, 1 Device(s)
> > PINNED Memory Transfers
> > Transfer Size (Bytes) Bandwidth(MB/s)
> > 33554432 2927.0
> >
> > Device to Device Bandwidth, 1 Device(s)
> > PINNED Memory Transfers
> > Transfer Size (Bytes) Bandwidth(MB/s)
> > 33554432 220748.1
> >##################################
> >
> >I just wanted to know whether this was OK and what the minimum bandwidth
> >was for a GPU in solo and dual-GPU setups.
> >
> >br,
> >g
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>
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Received on Mon Jun 10 2013 - 07:00:02 PDT
