Re: [AMBER] how to get around "cudaDeviceEnablePeerAccess all CUDA-capable devices are busy or unavailable"

From: Ross Walker <ross.rosswalker.co.uk>
Date: Sat, 08 Mar 2014 18:39:14 -0800

No, sorry, and it should not have been posted to the AMBER mailing list.
Amber 14 will be released shortly (we are finalizing the code now) and at
that time I'll update the GPUs webpage with all the information needed for
optimal runs with AMBER 14.

All the best
Ross


On 3/8/14, 6:21 PM, "filip fratev" <filipfratev.yahoo.com> wrote:

>Hi Ross and Chris,
>Good news!
>
>Is there any theoretical possibility one to obtain access to this
>development version for test purpose?
>
>Regards,
>Filip
>
>
>
>
>
>On , filip fratev <filipfratev.yahoo.com> wrote:
>
>Dear Chris,
>Is it possible to obtain from you the Amber 14 development version for
>test propose or I have to ask directly Ross?
>
>
>Thanks in advance!
>
>
>Regards,
>Filip
>
>
>
>On Sunday, March 9, 2014 4:02 AM, Chris McClendon
><chris.lee.mc.gmail.com> wrote:
>
>The development version of Amber14 currently does not support P2P for
>CUDA_VISIBLE_DEVICES="0,1" or
>CUDA_VISIBLE_DEVICES="2,3".
>
>it gives the error:
>cudaDeviceEnablePeerAccess all CUDA-capable devices are busy or
>unavailable
>
>Work-around:
>To get around this issue, root must disable exclusive compute mode on the
>relevant cards using "nvidia-smi -c 0"
>
>[root.compute-0-1 ~]# nvidia-smi -c 0
>
>Set compute mode to DEFAULT for GPU 0000:02:00.0.
>
>Set
> compute mode to DEFAULT for GPU 0000:03:00.0.
>
>Set compute mode to DEFAULT for GPU 0000:83:00.0.
>
>Set compute mode to DEFAULT for GPU 0000:84:00.0.
>
>
>And now....
>
>---------------- GPU PEER TO PEER INFO -----------------
>
>|
>
>| Peer to Peer support: ENABLED
>
>|
>
>|--------------------------------------------------------
>
>
>Ross has submitted this bug to NVIDIA, but this work-around will suffice
>in
>the interim.
>
>
>Happy simulating!
>
>--Chris McClendon, UCSD
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Received on Sat Mar 08 2014 - 19:00:03 PST
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