On 07/09/2017 21:12, Llelan D. wrote:
Windows 10 64bit, Cygwin64, openmpi 1.10.7-1 (dev, c, c++, fortran), GCC
6.3.0-2 (core, gcc, g++, fortran)
I am compiling the standard "hello_c.c" example with *mgicc*:
$ mpicc -g hello_c.c -o hello_c
The showme:
gcc -g hello_c.c -o hello_c -fexceptions -L/usr/lib -lmpi -lopen-rte -lopen-pal
-lm -lgdi32
This successfully creates hello_c.exe. When I run it directly, it
performs as expected (The first time run brings up a Windows Firewall
dialog and I click Accept):
$ ./hello_c
Hello World! I am 0 of 1, (Open MPI v1.10.7, package: Open MPI
marco@GE-MATZERI-EU Distribution, ident: 1.10.7, repo rev: v1.10.6-48-g5e373bf,
May 16, 2017, 129)
However, when I run it using mpiexec:
$ mpiexec -n 4 ./hello_c
$ ^C
Nothing is displayed and I have to ^C out. If I insert a puts("Start")
just before the call to MPI_Init(&argc, &argv), and a puts("MPI_Init
done.") just after, mpiexec will print "Start" for each process (4 times
for the above example) and then freeze. It is never returning from the
call to MPI_Init(...).
This is a freshly installed Cygwin64 and other non-mpi programs work
fine. Can anyone give me an idea of what is going on?
same here.
I will investigate to check if is a side effect of the
new 6.3.0-2 compiler or of the latest cygwin
Regards
Marco
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