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Bug 1506600 - openmpi-1.10 shows warnings for NUMA support however openmpi-1.8 works fine.
Summary: openmpi-1.10 shows warnings for NUMA support however openmpi-1.8 works fine.
Keywords:
Status: CLOSED WONTFIX
Alias: None
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: openmpi
Version: 6.9
Hardware: x86_64
OS: Linux
unspecified
medium
Target Milestone: rc
: ---
Assignee: John Feeney
QA Contact: Infiniband QE
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2017-10-26 12:01 UTC by Vishal Pakolu
Modified: 2020-12-14 10:40 UTC (History)
2 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2017-10-26 17:46:06 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)

Description Vishal Pakolu 2017-10-26 12:01:21 UTC 
Description of problem:

Facing issues with openmpi-1.10 receiving warning messages, however same behavior is not shown by openmpi-1.8

--------------------------------------------------------------------------
WARNING: a request was made to bind a process. While the system
supports binding the process itself, at least one node does NOT
support binding memory to the process location.

  Node:  inbansv0053

This usually is due to not having the required NUMA support installed
on the node. In some Linux distributions, the required support is
contained in the libnumactl and libnumactl-devel packages.
This is a warning only; your job will continue, though performance may be degraded.
--------------------------------------------------------------------------

Version-Release number of selected component (if applicable):
 
openmpi-1.10


How reproducible:

Reproducible on RHEL 6.9 with openmpi-1.10

Steps to Reproduce:

The MPI PingPong test has been taken from:

https://raw.githubusercontent.com/wesleykendall/mpitutorial/gh-pages/tutorials/mpi-send-and-receive/code/ping_pong.c

mpicc is contained in the devel RPM. The packages numactl and numactl-devel should be installed.

Make sure to use mpicc from OpenMPI 1.10 to build the program:

$ /usr/lib64/openmpi-1.10/bin/mpicc -o ping_pong ping_pong.c

Make sure it is linked with OpenMPI 1.10 library:

maus@inbansv0053 ~ $ ldd ping_pong
        linux-vdso.so.1 =>  (0x00007ffd185f4000)
        libmpi.so.12 => /usr/lib64/openmpi-1.10/lib/libmpi.so.12 (0x000000305ae00000) # <--------- OpenMPI 1.10 library
[...]

After this step run mpirun (make sure to use the binary from OpenMPI 1.10), substitutes "inbansv0053" with your hostname:

 /usr/lib64/openmpi-1.10/bin/mpirun -H inbansv0053,inbansv0053  --mca btl ^tcp --bind-to core /home/maus/ping_pong
--------------------------------------------------------------------------
WARNING: a request was made to bind a process. While the system
supports binding the process itself, at least one node does NOT
support binding memory to the process location.

  Node:  inbansv0053

This usually is due to not having the required NUMA support installed
on the node. In some Linux distributions, the required support is
contained in the libnumactl and libnumactl-devel packages.
This is a warning only; your job will continue, though performance may be degraded.
--------------------------------------------------------------------------
0 sent and incremented ping_pong_count 1 to 1
0 received ping_pong_count 2 from 1
Actual results:


Expected results:

Runs without warning message.

Additional info:
Comment 2 Beth Uptagrafft 2017-10-26 17:46:06 UTC 
Red Hat Enterprise Linux 6 is in the Production 3 Phase. During the
Production 3 Phase, Critical impact Security Advisories (RHSAs) and
selected Urgent Priority Bug Fix Advisories (RHBAs) may be released as
they become available.

The official life cycle policy can be reviewed here:

http://redhat.com/rhel/lifecycle

This issue does not meet the inclusion criteria for the Production 3 Phase
and will be marked as CLOSED/WONTFIX. If this remains a critical
requirement, please contact Red Hat Customer Support to request
a re-evaluation of the issue, citing a clear business justification. Note
that a strong business justification will be required for re-evaluation.
Red Hat Customer Support can be contacted via the Red Hat Customer Portal
at the following URL:

https://access.redhat.com/
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