[Pw_forum] runtime error : [btl_tcp_endpoint.c:655:mca_btl_tcp_endpoint_complete_connect] connect() to 192.168.5.164 failed: Connection refused (111)

[DHIRENDRA VAIDYA]

Dear PW_forum community,

I am new to Quantum Espresso and I am trying to instal QE on our institute
cluster. Compilers are installed in some non-standard directory and care is
taken to include paths to variable PATH and LD_LIBRARY_PATH.

With this an espresso-5.0.1 is installed with gcc-4.8.1 and openmpi-1.6.5.
I tried to produce bandstructure of silicon (given in one of the tutorials
on web). By setting #PBS -l nodes=1:ppn=4 I get the bandstructure of
silicon, the problem is in when *#PBS -l nodes=2*(or higher)*:ppn=2*(anything
here). The error I get is

[compute-0-94.local][[63421,1],2][btl_tcp_endpoint.c:655:mca_btl_tcp_endpoint_complete_connect]
connect() to 192.168.5.164 failed: Connection refused (111)
[compute-0-94.local][[63421,1],3][btl_tcp_endpoint.c:655:mca_btl_tcp_endpoint_complete_connect]
connect() to 192.168.5.164 failed: Connection refused (111)
=>> PBS: job killed: walltime 607 exceeded limit 600
mpiexec: killing job...


Neither I nor our system admin doesnt know about this error. Can someone
please tell me what this error is about. There is very little help on web
about this error and solution to add --mca [with some options] doesnt seem
to work for me.
-- 
Thanks a lot,
Dhirendra Vaidya,
IIT Bombay
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