[Octave-bug-tracker] [bug #52913] failing to print large amount of files

[anonymous]

URL:
  <http://savannah.gnu.org/bugs/?52913>

                 Summary: failing to print large amount of files
                 Project: GNU Octave
            Submitted by: None
            Submitted on: Tue 16 Jan 2018 02:14:26 PM UTC
                Category: None
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: None
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 4.2.1
        Operating System: GNU/Linux

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Details:

Saving the commands


array = rand(10,10);

for index=1:2000;
  mesh(array);
  print('animation.png', '-dpng');
end


to a file (e.g. 'print_many_files'), and executing them with octave results in
the following:


octave:1> print_many_files
warning: print.m: epstool binary is not available.
Some output formats are not available.
warning: called from
    __print_parse_opts__ at line 385 column 9
    print at line 315 column 8
    print_many_files at line 5 column 3
error: print: failed to open pipe "|/usr/bin/gs -dQUIET -dNOPAUSE -dBATCH
-dSAFER -dAutoRotatePages=/None -sDEVICE=png16m -dLanguageLevel=2
-dTextAlphaBits=4 -dGraphicsAlphaBits=1 -r150x150 -dEPSCrop
-sOutputFile="animation.png" -"
error: called from
    __opengl_print__ at line 169 column 7
    print at line 519 column 14
    print_many_files at line 5 column 3
octave:1> print_many_files
error: print: failed to open pipe "|/usr/bin/gs -dQUIET -dNOPAUSE -dBATCH
-dSAFER -dAutoRotatePages=/None -sDEVICE=png16m -dLanguageLevel=2
-dTextAlphaBits=4 -dGraphicsAlphaBits=1 -r150x150 -dEPSCrop
-sOutputFile="animation.png" -"
error: called from
    __opengl_print__ at line 169 column 7
    print at line 519 column 14
    print_many_files at line 5 column 3
octave:1>


I suspect the epstool warning has nothing to do with the problem, but I
included it for completeness (maybe I am wrong).
What I count as error here is the 'failed to open pipe'

If you call print_many_files for the first time, it takes a while before
octave reports the error. When I numbered the output file it did go up to 995
well and failed at 996 (I have seen no variations in the file numbers).
If you try to call print_many_files a second time, it fails without noticeble
delay.

The correct behaviour would be for me to simply go through the script with no
error, independent of the upper limit of the loop.




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