Thank you for the suggestion Atgeirr. I'll try out the previous release 2019.10.

- Yogi

-----Original Message-----
From: Atgeirr Rasmussen [mailto:[email protected]] 
Sent: Wednesday, March 11, 2020 6:46 AM
To: [email protected]
Subject: Re: [Opm] OPM Flow multi-node simulations stuck at domain 
decomposition step

Hi Yogi,

Lots of things have changed in Flow for the initialization in parallel 
recently. Could you try to check out the previous release (2019.10) and check 
if you see the same problems?

Atgeirr
________________________________
Frå: Opm <[email protected]> på vegne av Markus Blatt 
<[email protected]>
Sendt: onsdag 11. mars 2020 11:08
Til: [email protected] <[email protected]>
Emne: Re: [Opm] OPM Flow multi-node simulations stuck at domain decomposition 
step

Hi Yogi,

On Tue, Mar 10, 2020 at 02:15:19PM -0700, Yogi Pandey wrote:
> Simulation is being run on 4 nodes with 32 processors each using following 
> command:
>
> mpirun --display-map -mca btl self -x UCX_TLS=rc,self,sm -x 
> HCOLL_ENABLE_MCAST_ALL=0 -mca coll_hcoll_enable 0 -x UCX_IB_TRAFFIC_CLASS=105 
> -x UCX_IB_GID_INDEX=3 --cpu-set 
> 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35
>  -np 144 --hostfile /etc/opt/rdma/hostfile 
> /mnt/nfs-share/etc/opm-flow/opm-simulators/build/bin/flow 
> --parameter-file=/mnt/nfs-share/data/norne/params
>

Out of curiosity. Is there a special reason why --cpu-set runs until 35 with 32 
cpus per node? Might you be oversubscribing a node?

Markus

--
Dr. Markus Blatt
OPM-OP AS
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