Sangmin.

 

I updated to mpich3 and getting the following error

 

Fatal error in MPI_Recv: A process has failed, error stack:

MPI_Recv(187).............: MPI_Recv(buf=0x7fff93840c30, count=644490, MPI_REAL, src=1, tag=14131, MPI_COMM_WORLD, status=0x7fff94444f20) failed

dequeue_and_set_error(865): Communication error with rank 1

rank 1 in job 1  dfw-camx_55000   caused collective abort of all ranks

  exit status of rank 1: killed by signal 9

 

Same situation, successful runs for smaller resource runs and for up to 7 processes.  Error at more than 7.  Here is the mpich command I am using to run from my job file…

 

cat << ieof > nodes

dfw-camx:1

dfw-camx-n1:1

dfw-camx-n2:1

dfw-camx-n3:1

dfw-camx-n4:1

dfw-camx-n5:1

dfw-camx-n6:1

dfw-camx-n7:1

ieof

set NUMPROCS = 8

set RING = `wc -l nodes | awk '{print $1}'`

mpdboot -n $RING -f nodes –verbose

 

if( ! { mpiexec -machinefile nodes -np $NUMPROCS $EXEC } ) then

   mpdallexit

   exit

endif

 

 

For a successful run the NUMPROCS has to be < = 7.

 

Any help is much appreciated.

 

Thank You

Abhishek

………………………………………………………………………………………………….

Abhishek Bhat, PhD, EPI,
Senior Consultant

 

 

From: Seo, Sangmin [mailto:sseo@anl.gov]
Sent: Friday, September 12, 2014 1:11 PM
To: <discuss@mpich.org>
Subject: Re: [mpich-discuss] Error Running MPICH for Photochemical Modeling

 

Hi Abhishek,

 

Can you try with the recent MPICH release to see if the same error happens? You can download the recent release, 3.1.2, from http://www.mpich.org/downloads/.

 

Thanks,

Sangmin

 

 

On Sep 12, 2014, at 12:59 PM, Abhishek Bhat <abhat@trinityconsultants.com> wrote:



I am running a photochemical modeling on Linux cluster (CentOS_64 bit) with 1 master and 8 slave nodes with quad core (intel i7) on each node.  I have two scenarios, in first scenario, I am running less data intensive run on all 8 nodes (NUMPROCS = 9) and the run will go fine.  When running same configuration for a more intense run, I am getting following error.

 

Fatal error in MPI_Recv: Other MPI error, error stack:

MPI_Recv(187).....................: MPI_Recv(buf=0x7fff989d53b0, count=644490, MPI_REAL, src=1, tag=14131, MPI_COMM_WORLD, status=0x7fff995d96a0) failed

MPIDI_CH3I_Progress(150)..........:

MPID_nem_mpich2_blocking_recv(948):

MPID_nem_tcp_connpoll(1720).......:

state_commrdy_handler(1556).......:

MPID_nem_tcp_recv_handler(1446)...: socket closed

rank 1 in job 1  dfw-camx_55000   caused collective abort of all ranks

  exit status of rank 1: killed by signal 9

 

If I run the program with smaller nodes (smaller than 7 NUMPROCS) the run goes fine.

 

It appears that the rank 1 (my first node) is collectively causing all the ranks, but I could identify why.  I tried following solutions –

 

1.       Increased master memory to 32 gb

2.       Increased all nodes memory to 32 gb

3.       Exchanged the rank 1 to different node in the parallel.

 

In all situations, I am getting this error.  Surprisingly, when I am running smaller (less data intensive runs), I am not getting this error even if I increase the NUMPROCS to 32 processes.

 

Any help will be highly appreciated.

 

I am running mpich 1.4

 

Thank You
Abhishek

………………………………………………………………………………………………….

Abhishek Bhat, PhD, EPI,
Senior Consultant

 

Trinity Consultants

12770 Merit Drive, Suite 900  |  Dallas, Texas 75251

Office:  972-661-8100|  Mobile:  806-281-7617

 

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