Matlab & Cygwin X-windows terminates abruptly, Firefox and Outlook do not
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I'm executing many-day Matlab jobs on Windows10. On two successive occassions, when the job has run for about a day, I found that the Matlab process and my Cygwin Xterm and Gvim processes are gone. Firefox and Outlook 2013 are still running.
I look at the Matlab log file (i.e., its "diary") and found typical output, suddenly end in the middle of a text line, indicating a highly abnormal interruption. The abruptness of the interruption is reinforced by the fact that my Matlab code creates an "onCleanup" object that flushes the diary when it is destroyed, and it is clear that the object didn't even get a chance to be destroyed.
Since the Cygwin X-Windows clients are also gone, it is possible that problem is not Matlab-specific. The Cygwin processes that also terminated are unrelated to the Matlab process.
Are there any measures that I can take in Matlab to identify the cause of these terminations?