On 29.03.2016 21:39, Alan W. Irwin wrote:
One of the PLplot developers, Arjen Markus, has just reported to me
that ctest -j4 for PLplot hangs on his MinGW-w64/MSYS2 platform while
ctest works fine. This issue occurred for the
mingw64/mingw-w64-x86_64-cmake 3.4.1-1 package version of ctest.exe,
and the PLplot build was done with the "MSYS Makefiles" generator. In
contrast to the MinGW-w64/MSYS2 platform case, ctest -j4 works fine
for the Linux case.
Has anyone else here had similar difficulties OR success with the
parallel ctest option on the MinGW-w64/MSYS2 platform?
Afair there are sporadic issues with the cygwin runtime (on which
msys/msys2 is based) in the process handling code of kwsys (used by cmake).
The code is used by e.g. execute_process() and also ctest for test
execution.
I think the issue is due to how pipes are implemented by the runtime.
From what I remember rsync also suffers from this.
Also having Kaspersky installed (even when paused) seems to make these
hangs more likely.
Nils
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