1) Is it possible to start R sessions on Linux (e.g. Rsession1) and submit multiple jobs in batch mode to the same R Session (e.g. job1 to Rsession1 and then later on based on user action submit job2 to Rsession1)?
This is equivalent to opening interactive R Session and submitting job1 and the user can submit job2 in same session (which will be available until the user closes interactive R session)
2) Is it possible to start two R sessions on Linux (e.g. Rsession1 and Rsession2) and submit multiple jobs in batch mode but specify session-id during job submission?
This is equivalent to opening two interactive R Sessions and submitting jobs to different R sessions by clicking on the window manually submitting the job.
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Answer
I’m not sure what your end goal is, but have you considered something like the futures package that will allow R to send work off to another thread to be completed? That way the work can be done but doesn’t lock up the main R session while the work is being completed. This way, via the main R session, you could launch job1 and then while that was still being worked on, launch job2.