[AMBER] Utilization of 3 GPUs suddenly drop to 0% and won't work any more

From: 浅井 賢 <suguruasai.gmail.com>
Date: Wed, 29 Jul 2015 15:35:38 +0900

Dear Amber user,

Hi, I'm facing some strange problem on using 4 GPUs with pmemd.cuda.MPI
sometime so I wonder if someone can help me.
I am not really sure the minimum requirements for reproducing the
situation but it occurs probably when I use pmemd.cuda.MPI to use two or
more GPUs in a simulation.
The phenomenon is a sudden utilization drop, which you can see the
screen shot below.


It seems the simulation is slow but goes OK actually but I'm afraid
physical problem on GPUs, and also it is so annoying.
While I have no idea what's going on, I don't know the word to search on
So does anybody have any idea?

Thank you.



md.out - mdout file of `pmemd.cuda.MPI`
nvidia-smi.txt - `$ nvidia-smi > nvidia-smi.txt`

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Received on Wed Jul 29 2015 - 00:00:03 PDT
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