National Radio
Astronomy Observatory

1.3.5 Aborting CASA execution

If something has gone wrong and you want to stop what is executing, then typing CNTL-C (Control and C keys simultaneously) will usually cleanly abort the application. This will work if you are running a task synchronously. If this does not work on your system, or you are running a task asynchronously (§ 1.4.4) then try CNTL-Z to put the task or shell in the background, and then follow up with a kill -9 <PID> where you have found the relevant casapy process ID (PID) using ps (see § 1.3.6 below).

If the problem causes CASA to crash, see the next sub-section.

See § 1.4.2 for more information on running tasks.

Alert: CNTL-C while a tasks runs can corrupt your input data file, e.g. when a scratch column is filled while aborting. If in doubt, wait until the task has finished, delete the new files produced, and start again.

More information about CASA may be found at the CASA web page

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