# Error Submitting Job: Unable to determine the nodes available at destination **URL:** \ **Category:** Users/Site Administrators\ **Created:** [September 22, 2018, 7:20am UTC](https://community.openpbs.org/t/error-submitting-job-unable-to-determine-the-nodes-available-at-destination/1209 "2018-09-22T07:20:40Z")\ **Posts on this page:** 1\ **Showing post:** 4
**Author:** ![adarsh](https://avatars.discourse-cdn.com/v4/letter/a/f07891/32.png) [@adarsh](https://community.openpbs.org/u/adarsh)\ **Post date:** [September 24, 2018, 1:59pm UTC](https://community.openpbs.org/t/error-submitting-job-unable-to-determine-the-nodes-available-at-destination/1209/4 "2018-09-24T13:59:55Z")
Hi prebinta, **Please note PBS Pro OSS is not torque:** > [@PBS Default number of nodes and number of cpus](http://community.openpbs.org/t/pbs-default-number-of-nodes-and-number-of-cpus/834/4): > > So a little history for your knowledge. PBS was originally developed for NASA under a contract project. Altair Engineering acquired the rights to all the PBS technology and intellectual property from Veridian in 2003. Altair Engineering currently owns and maintains the intellectual property associated with PBS, and also employs the original development team from NASA. The following versions of PBS are currently available: OpenPBS — original open source version released by MRJ in 1998 (not ac… **/var/spool/pbs** would be $PBS\_HOME by default **/opt/pbs** would be $PBS\_EXEC by default You can update those variables to point it to PBS Pro OSS. In the RSM’s cluster configuration, you should see PBS Pro in the drop-down (against the Type of Cluster). There is ClusterJobs.py , you might need to update that file, please check 6.3.2.1. Submit Command of the RSM User guide. --- _[View the full topic](https://community.openpbs.org/t/error-submitting-job-unable-to-determine-the-nodes-available-at-destination/1209)._