How to run ABINIT on multiple GPU cards

Total energy, DFT+U, BigDFT,...

Moderator: amadon

How to run ABINIT on multiple GPU cards

Postby roshan » Wed Jan 07, 2015 9:54 am

Hello, I installed ABINIT successfully with GPU flags and it is running smoothly too. I am having two NVIDIA Tesla C2050 cards in my machine . when I run abinit it shows running on only one card , the other card is free when I run it. My question is how can I run / divide the processing/computing between the two cards.
roshan
 
Posts: 2
Joined: Wed Jan 07, 2015 9:47 am

Re: How to run ABINIT on multiple GPU cards

Postby Jordan » Thu Jan 22, 2015 4:53 pm

At the moment you can only use one GPU per CPU. So if you have 2 GPUs, you should use 2 MPI processes. Each one should use one GPU.

Good luck

Jordan
Jordan
 
Posts: 281
Joined: Tue May 07, 2013 9:47 am

Re: How to run ABINIT on multiple GPU cards

Postby shshi » Fri Apr 01, 2016 3:59 am

Jordan wrote:At the moment you can only use one GPU per CPU. So if you have 2 GPUs, you should use 2 MPI processes. Each one should use one GPU.

Good luck

Jordan


Hi Jordan,

I have 2 GPU cards and I use 2 MPI processes to run the program, but it used only one GPU too. May I know if there is any configuration options to enable multiple GPUs? Thanks.

Shaohuai
shshi
 
Posts: 1
Joined: Fri Apr 01, 2016 3:46 am

Re: How to run ABINIT on multiple GPU cards

Postby Jordan » Tue Apr 05, 2016 10:57 am

Hi,

I'm not quite sure, but I think that if there are 2 GPUs on one node, abinit checks which one is the fastest and only uses this one. If there are equivalent, I don't know what happens.
So maybe the 2 MPI processes want to use the same GPU so only one is used.

I'll try to ask someone who knows more than me about GPUs

Cheers
Jordan
 
Posts: 281
Joined: Tue May 07, 2013 9:47 am

Re: How to run ABINIT on multiple GPU cards

Postby marco.digennaro » Wed Apr 26, 2017 1:56 pm

Hey all,

we have managed to compile gpu with openmp on a XCray machine.
Is there any benchmark for abinit 8.2 we can use to test our compilation?

thanks a lot
m.
Marco Di Gennaro
Marvel, University of Basel (CH)
marco.digennaro
 
Posts: 12
Joined: Thu Jun 16, 2016 8:47 am
Location: Basel, CH


Return to Ground state

Who is online

Users browsing this forum: No registered users and 3 guests

cron