Microsoft will have to support your usage of their code. Mac OSX is based upon BSD but that doesn't imply you should ask the UCBerkeley CS department for Mac tech support... Jeff Sent from my iPhone On Sep 13, 2013, at 2:41 AM, "[email protected]" < [email protected]> wrote: Thank you for your information. As a consequence (as recommended by MPICH-FAQ) I downloaded the Microsoft MPI (which is based on MPICH) on my Win7 (64-bit) PC. The installation was successful, but… there is a problem with MPI_REDUCE when using it with MPI_INPLACE, see my next email today. Michael Rachner *Von:* [email protected] [mailto:[email protected]<[email protected]>] *Im Auftrag von *Wesley Bland *Gesendet:* Mittwoch, 11. September 2013 16:07 *An:* [email protected] *Betreff:* Re: [mpich-discuss] MPI 3 on Win7(64-bit) Unfortunately, we haven't supported Windows since MPICH version 1.4.1p1. You can find out more at the FAQ page: http://wiki.mpich.org/mpich/index.php/Frequently_Asked_Questions#Q:_Why_can.... Thanks, Wesley On Sep 11, 2013, at 8:13 AM, Jeff Hammond <[email protected]> wrote: There's a frequently quoted entry in the MPICH FAQ about Windows support that you may wish to consult. Or peruse list archives. Jeff Sent from my iPhone On Sep 11, 2013, at 5:55 AM, "[email protected]" < [email protected]> wrote: Dear developers of MPICH, Can anyone tell me, when a stable MPI 3 version (binary) of MPICH will be available for Win7(64-bit) operating system? The new feature of MPI 3 of accessing a shared memory data window from the processes on the same node could become very helpful for my Ftn-code. Thank You Michael Rachner _______________________________________________ discuss mailing list [email protected] To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/discuss _______________________________________________ discuss mailing list [email protected] To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/discuss _______________________________________________ discuss mailing list [email protected] To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/discuss