On 11/22/2015 5:04 PM, Philip Bitar wrote: > *How to run OpenMPI C code under Windows 7* > > I'm trying to get OpenMPI C code to run under Windows 7 any way that I > can. Evidently there is no current support for running OpenMPI > directly under Windows 7, so I installed Cygwin. Is there a better way > to run OpenMPI C code under Windows 7? > > Under Cygwin, I installed a GCC C compiler, which works. > > I also installed an OpenMPI package. Here is a link to a list of the > files in the Cygwin OpenMPI package: > > https://cygwin.com/cgi-bin2/package-cat.cgi?file=x86%2Flibopenmpi%2Flibopenmpi-1.8.6-1&grep=openmpi > > My PATH variable is as follows: > > /usr/local/bin:/usr/bin > > mpicc will compile, but it won't link. It can't find the following: > > -lmpi > -lopen-rte > -lopen-pal > > The test program includes stdio.h and is nothing more than printf > hello world. I can compile and run it using the GCC C compiler. > > Presumably I need to update the PATH variable so that the link step > will find the missing components. Are those components file names or > info contained in some other files? Can I verify that the needed files > have been installed? > > I would also be pleased to obtain a link to material that explains the > OpenMPI system, in general, and the OpenMPI C functions, in > particular, so that I can write C programs to use the OpenMPI system. > > I looked for this kind of info on the web, but I haven't found it yet. > Maybe it's on the OpenMPI site, and I missed it. > > You probably want the libopenmpi-devel package from cygwin setup.exe as well. If you have windows 7 X64, the x86_64 cygwin is probably preferable to 32-bit (can't see which you started with). An alternative, with a build of mingw x86-64, is Walt Brainerd's CAF build. If this wasn't discussed in the OpenMPI archives, but has not been withdrawn, you might ask the author, e.g. https://groups.google.com/forum/#!searchin/comp.lang.fortran/coarray$20fortran/comp.lang.fortran/P5si9Fj1yIY/ptjM8DMUUzUJ It's a little difficult to use if you have another MPI installed, as Windows MPI (like the MPI which comes with linux distros) don't observe normal methods for keeping distinct paths. I doubt there is a separate version of OpenMPI docs specific to Windows.
-- Tim Prince
