(j3.2006) Integration of co-arrays with the intrinsic shift functions
Thu Jul 12 16:30:01 EDT 2007
On Thu, 2007-07-12 at 14:15 -0600, Craig Rasmussen wrote:
> I've been talking to code developers and examining codes at Los
> Alamos and I've come across an area that we forgot to integrate with
> co-arrays. I've written a paper describing the issue but I'm unsure
> of how to submit it since this is a WG5 meeting.
It's a joint meeting, both WG5 and J3, so submit the paper as an
ordinary J3 paper -- unless you want it to be a WG5 paper, in which case
you ought to send it to John Reid.
> I have identified at least one code at Los Alamos that implements
> global shift functions (nearly identical to the co_cshift and
> co_eoshift intrinsics proposed in the paper) in MPI. This issue is
> very important to LANL as we are investing heavily in heterogeneous
> processor architectures and the data parallel programming model has
> been identified as one way to manage the complexity of the hardware.
> In summary, after thinking about how co-arrays can be used with
> Fortran's array notation, it seems to me that Fortran with the co-
> array additions can provide an ideal platform for a data-parallel
> style of programming.
Most of the "Description" paragraph in your proposed function
definitions ought to be in a "Result Value" paragraph, and you need an
"Example" or "Examples" paragraph.
Van Snyder | What fraction of Americans believe
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