[mvapich-discuss] WARNING: Error in initializing MVAPICH2 ptmalloc library (not Python related)

[Subramoni, Hari]

Hi, Zhi.

Thanks for your report.

This issue has been fixed internally and will be available with our next release.

Please refer to the following sections of the MVAPICH2 userguide for more information on the impact of disabling memory registration cache on application performance

http://mvapich.cse.ohio-state.edu/static/media/mvapich/mvapich2-2.3.3-userguide.html#x1-1350009.1.4

Thx,
Hari.

From: mvapich-discuss-bounces at cse.ohio-state.edu <mvapich-discuss-bounces at mailman.cse.ohio-state.edu> On Behalf Of You, Zhi-Qiang
Sent: Tuesday, May 5, 2020 10:56 AM
To: mvapich-discuss at cse.ohio-state.edu <mvapich-discuss at mailman.cse.ohio-state.edu>
Subject: [mvapich-discuss] WARNING: Error in initializing MVAPICH2 ptmalloc library (not Python related)

Hi,

We recently noticed this warning message from mvapich2/2.3.3 with pgi/20.1 on OSC:

$ module reset
$ module load pgi/20.1 mvapich2/2.3.3
$ mpiexec -np 2 -ppn 1 ./hello-pgi
WARNING: Error in initializing MVAPICH2 ptmalloc library.Continuing without InfiniBand registration cache support.
Hello world from rank 0 out of 2 processors on CPU 00 on node o0553.ten.osc.edu
Hello world from rank 1 out of 2 processors on CPU 00 on node o0484.ten.osc.edu

I have googled this and found the work arounds for Python based program do not work at all: http://mvapich.cse.ohio-state.edu/static/media/mvapich/mvapich2-2.3.2-userguide.html#x1-1320009.1.1


1. One question: is there impact to the performance of the MPI program when I get this warning?

2. Here is the configuration for installation of mvapich2/2.3.3 with pgi/20.1

$ mpiname  -a
MVAPICH2 2.3.3 Thu January 09 22:00:00 EST 2019 ch3:mrail

Compilation
CC: pgcc -noswitcherror -fPIC -I/opt/ddn/ime/include   -DNDEBUG -DNVALGRIND -O2
CXX: pgc++ -noswitcherror -fPIC   -DNDEBUG -DNVALGRIND
F77: pgfortran -noswitcherror -fPIC -L/lib -L/lib
FC: pgf90 -noswitcherror -fPIC

Configuration
--prefix=/opt/mvapich2/pgi/20.1/2.3.3 --enable-shared --with-mpe --enable-romio --enable-mpit-pvars=mv2 --disable-option-checking --with-file-system=ufs+nfs+gpfs+ime --with-pbs=/opt/torque --with-pbs-lib=/opt/torque/lib64 --with-pbs-include=/opt/torque/include


Thank you,
-ZQ
--
Zhi-Qiang You
Scientific Applications Engineer
Ohio Supercomputer Center (OSC)<https://osc.edu/>
A member of the Ohio Technology Consortium<https://oh-tech.org/>
1224 Kinnear Road, Columbus, Ohio 43212
Office: (614) 688-2310<tel:+16142928492> • Fax: (614) 292-7168<tel:+16142927168>
zyou at osc.edu<mailto:zyou at osc.edu>

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