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Re: parallel make hangs

From: Daniel J Sebald
Subject: Re: parallel make hangs
Date: Tue, 21 Nov 2017 21:06:45 -0600
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.2.1

On 11/21/2017 07:01 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...

Those happen sometimes. Here the make process hangs on voronoi.eps (regardless of parallel build or not), but I think that is a long-standing bug with osmesa and nVidia drivers. convhull and voronoi figures are challenging for

     print (outfile, d_typ);

for some reason.  Didn't simply running "make -j8" a second time succeed?


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