[mpich-discuss] Why do predefined MPI_Ops function elementwise in MPI_Accumulate, but not in MPI-1 routines?

[Jed Brown]

On Tue, Apr 24, 2012 at 13:17, Dave Goodell <goodell at mcs.anl.gov> wrote:

> On Apr 24, 2012, at 1:04 PM CDT, Jed Brown wrote:
>
> > On Tue, Apr 24, 2012 at 12:57, Dave Goodell <goodell at mcs.anl.gov> wrote:
> >>
> >> Out of curiosity, how do you feel about just cheating a bit and using
> MPI_C_DOUBLE_COMPLEX for this particular use case?  Do you believe the risk
> of some sort of mismatch between C's _Complex and std::complex to be too
> great?
> >
> > We tried to do this, but learned that MPI_C_DOUBLE_COMPLEX was floating
> around in mpi.h just to trick our configure tests (since it fails at
> run-time on Windows) and the bug report was closed by you as INVALID.
>
> Ahh, yes, the Windows-is-broken issue.  Ignore me, I had paged this ticket
> out of my brain when writing the above email.


So the "solution" is to not "fix" the Windows issue? ;-)
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