[mpich-discuss] All processes only find themselfs

[Raffenetti, Ken]

Can you confirm which MPI library you binary is linked with using ldd? Adding -v to the mpirun command should also provide some clues in the PMI client/server traffic.

Ken

-----Original Message-----
From: Joachim Jenke via discuss <discuss at mpich.org <mailto:discuss at mpich.org>>
Reply-To: "discuss at mpich.org <mailto:discuss at mpich.org>" <discuss at mpich.org <mailto:discuss at mpich.org>>
Date: Wednesday, July 3, 2024 at 5:16 AM
To: "discuss at mpich.org <mailto:discuss at mpich.org>" <discuss at mpich.org <mailto:discuss at mpich.org>>
Cc: Joachim Jenke <jenke at itc.rwth-aachen.de <mailto:jenke at itc.rwth-aachen.de>>
Subject: [mpich-discuss] All processes only find themselfs


Hi all,


after upgrading my notebook to Ubuntu 24.04, each processes thinks that 
MPI_COMM_WORLD only consists of its own process:


$ mpirun -np 2 -l ./a.out
[1] Hello, I am 0 of 1 tasks.
[0] Hello, I am 0 of 1 tasks.


Any suggestions what could go wrong?




$ mpirun --version
HYDRA build details:
Version: 4.2.0
Release Date: Fri Feb 9 12:29:21 CST 2024
CC: gcc -Wdate-time 
-D_FORTIFY_SOURCE=3 -g -O2 -fno-omit-frame-pointer 
-mno-omit-leaf-frame-pointer 
-ffile-prefix-map=/build/mpich-C3oteG/mpich-4.2.0=. -flto=auto 
-ffat-lto-objects -fstack-protector-strong -fstack-clash-protection 
-Wformat -Werror=format-security -fcf-protection 
-fdebug-prefix-map=/build/mpich-C3oteG/mpich-4.2.0=/usr/src/mpich-4.2.0-5build3 
-Wl,-Bsymbolic-functions -flto=auto -ffat-lto-objects -Wl,-z,relro
Configure options: '--with-hwloc-prefix=/usr' 
'--with-device=ch4:ucx' 'FFLAGS=-O2 -fno-omit-frame-pointer 
-mno-omit-leaf-frame-pointer 
-ffile-prefix-map=/build/mpich-C3oteG/mpich-4.2.0=. -flto=auto 
-ffat-lto-objects -fstack-protector-strong -fstack-clash-protection 
-fcf-protection 
-fdebug-prefix-map=/build/mpich-C3oteG/mpich-4.2.0=/usr/src/mpich-4.2.0-5build3 
-fallow-invalid-boz -fallow-argument-mismatch' '--prefix=/usr' 
'CFLAGS=-g -O2 -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer 
-ffile-prefix-map=/build/mpich-C3oteG/mpich-4.2.0=. -flto=auto 
-ffat-lto-objects -fstack-protector-strong -fstack-clash-protection 
-Wformat -Werror=format-security -fcf-protection 
-fdebug-prefix-map=/build/mpich-C3oteG/mpich-4.2.0=/usr/src/mpich-4.2.0-5build3' 
'LDFLAGS=-Wl,-Bsymbolic-functions -flto=auto -ffat-lto-objects 
-Wl,-z,relro' 'CPPFLAGS=-Wdate-time -D_FORTIFY_SOURCE=3'
Process Manager: pmi
Launchers available: ssh rsh fork slurm ll lsf 
sge manual persist
Topology libraries available: hwloc
Resource management kernels available: user slurm ll lsf sge pbs 
cobalt
Demux engines available: poll select


Best
Joachim


-- 
Dr. rer. nat. Joachim Jenke


IT Center
Group: High Performance Computing
Division: Computational Science and Engineering
RWTH Aachen University
Seffenter Weg 23
D 52074 Aachen (Germany)
Tel: +49 241 80- 24765
Fax: +49 241 80-624765
jenke at itc.rwth-aachen.de <mailto:jenke at itc.rwth-aachen.de>
https://urldefense.us/v3/__http://www.itc.rwth-aachen.de__;!!G_uCfscf7eWS!bLNL2QWGpmV9KusatG3lZGL2H2VHs4DMEhn9N_758dfIBs-eT7j4mmcpiUVr2lWaNQ6JNPxmuWP1CzWy$