OpenMPI Problem

cyg Simple
Sun Dec 18 17:52:00 GMT 2016

On 12/18/2016 9:55 AM, Bahadır Öncel wrote:
> Hello all!
> I've installed cygwin and openmpi successfully. I can compile and run
> mpi programs. Twist is, even the openmpi test program hello_c.c approx
> takes a minute to run. When I try in my virtual machine (linux) the
> same program takes less than a second to run.
> I've found that other users asked the same question but did not find
> any solution.

Windows itself is inherently slow.  Adding in the emulation layer slows
it even more.  So if you want to port the compiler to Windows native you
may find a bit faster execution but that may be debatable.

> Problem reports:
Use the above when reporting issues, even in a question.

> FAQ:         
Since speed of execution is a frequently asked question, you might find
some tidbits in the FAQ.

And don't forget about BLODA issues.

cyg Simple

Problem reports:
Unsubscribe info:

More information about the Cygwin mailing list