[torqueusers] Multiple concurrent calls of pbsdsh from same job script

[Martin Schafföner]

I am in the process of discontinuing rsh access to compute nodes and replacing 
it by TM-based spawns. We have a suite of perl helper scripts which split and 
distribute certain tasks to nodes allocated to a job. This is achieved by 
forking and execing a synchronous rsh call (the ones I would like to 
discontinue).

Now I thought of replacing the rsh calls by pbsdsh calls. However, while a 
pbsdsh waits for the spawned process to finish, I cannot spawn more processes 
using another pbsdsh. It returns "pbsdsh: tm_init failed, rc = 
TM_ENOTCONNECTED (17002)" and Mother Superior's log has 
"pbs_mom;Svr;pbs_mom;tm_request, extra TM connect from 3790.cluster task 1". 

Does anybody know an easy solution to this problem?

Regards,
-- 
Martin Schafföner

Cognitive Systems Group, Institute of Electronics, Signal Processing and 
Communication Technologies, Department of Electrical Engineering, 
Otto-von-Guericke University Magdeburg
Phone: +49 391 6720063