On 2015-12-27 20:26-0000 Phil Rosenberg wrote: > Hi Alan > Thanks, the parallel build seems to have been the issue. I have added > a note to the documentation readme to warn that the recommended -j4 > option does not work under Cygwin.
Hi Phil: I am glad you discovered the source of the issue by following up on that possibility I suggested. The lack of reliable parallel build is an important issue on Cygwin for those with access to multi-cpu PC's where substantial build speedups will become available once parallel builds are reliable again on Cygwin. However, it is guaranteed that no Cygwin developer is going to do anything about this important issue until someone brings a reproducible problem to their attention. If the problem seems reproducible in your case (i.e., -j4 always gives you a bad result from a fresh start for 3 or more tries on your particular hardware), then I suggest it is worth reporting the issue as a Cygwin bug report. Assuming you are satisfied on the reproducibility question, and have written such a bug report, it should be sent to the Cygwin mailing list (the Cygwin developers prefer that way of reporting Cygwin bugs). That report should contain a good description of your hardware (especially the frequency and number of cpu(s) in case those hardware attributes affect the reproducibility), and a cookbook (probably with most wording lifted from doc/docbook/README.developers) of how our documentation should be built on that platform. Such details should give the Cygwin developers a reasonable chance to reproduce the issue consistently for themselves which is the first step in finding and eventually fixing the bug. Alan __________________________ Alan W. Irwin Astronomical research affiliation with Department of Physics and Astronomy, University of Victoria (astrowww.phys.uvic.ca). Programming affiliations with the FreeEOS equation-of-state implementation for stellar interiors (freeeos.sf.net); the Time Ephemerides project (timeephem.sf.net); PLplot scientific plotting software package (plplot.sf.net); the libLASi project (unifont.org/lasi); the Loads of Linux Links project (loll.sf.net); and the Linux Brochure Project (lbproject.sf.net). __________________________ Linux-powered Science __________________________ ------------------------------------------------------------------------------ _______________________________________________ Plplot-devel mailing list Plplot-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/plplot-devel
