Hi Russel --

On Fri, 9 Sep 2016, Russel Winder wrote:

... For actual GASNet work, I compiled
and then replicated the filestore to all the machines on the
GASNET_SSH_SERVERS list but got:

env: ‘pi_parallel_reduce_notBatched_real’: No such file or directory
connection to lavaine.winder.org.uk failed.

This would imply that either after login on to the remote machine there
is no cd to the same working directory as the launch is from or that
the user login PATH is not being used for lookup (i.e. that . is not on
the PATH. This behaviour has somewhat surprised me.  I guess I have
just missed something in the documentation…

Based on $CHPL_HOME/third-party/gasnet/gasnet-src/udp-conduit/README,
there is a cd to the working directory on the remote side, so likely the
problem is that the lack of "." in the PATH there.  You could confirm
this (for both of us) by doing (bash syntax):

  ssh $(echo $GASNET_SSH_SERVERS | cut -d' ' -f1) echo '$PATH'

The process on the remote side of such an ssh command doesn't typically
end up with the same environment as either that on the initiating side
or what would result from ssh'ing without a command, in my experience.
So even if you have "." in your PATH on the initiating side that won't
help.

In any case, if you given an explicit path when you run the Chapel
launcher then our launcher will prefix the _real with the same path on
the target side, so this should work:

  ./pi_parallel_reduce_notBatched ...

greg



--
Russel.
=============================================================================
Dr Russel Winder      t: +44 20 7585 2200   voip: sip:[email protected]
41 Buckmaster Road    m: +44 7770 465 077   xmpp: [email protected]
London SW11 1EN, UK   w: www.russel.org.uk  skype: russel_winder
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