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Re: parallel make hangs


From: John W. Eaton
Subject: Re: parallel make hangs
Date: Wed, 22 Nov 2017 10:36:34 -0500
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.4.0

On 11/21/2017 08:01 PM, Dmitri A. Sergatskov wrote:
Every now and then parallel make (make -j8 in my case) hangs at
....
   GEN      doc/interpreter/octave.html/splinefit3.png
   GEN      doc/interpreter/octave.html/splinefit4.png
   GEN      doc/interpreter/octave.html/splinefit6.png
   GEN      doc/interpreter/octave.html/octave.css
(with octave process running at 100% cpu load)
Killing it with Ctrl-C results in:

^Cmake[2]: *** Deleting file 'doc/interpreter/convhull.eps'
^C^Cfatal: caught signal Interrupt -- stopping myself...
attempting to save variables to 'octave-workspace'...
octave exited with signal 11
make[1]: *** [Makefile:26595: all-recursive] Interrupt
make: *** [Makefile:10262: all] Interrupt

After that i can just issue simple make and it will finish no problem.
It looks to me there are some race conditions...

When this happens, could you use gdb to connect to the process and see where it is hanging?

jwe



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