I recall discussion of the hybrid approach, which I think most of the list doesn't much like, but interested me on account of my application. But I hadn't realized that hybrid was required by OpenMP for multi node architectures. So yeah, I'll just go with MPI for starters. When I start :-) Peter
On 6/26/08, Geoff Jacobs <[EMAIL PROTECTED]> wrote: > > Peter St. John wrote: > > Geoff, > > Oops! I totally misunderstood it. So it's strictly shared-memory, and > > requires something like MPI for crossing nodes. Gotcha. Big mistake, > thanks. > > Peter > > > Shared memory only, yes. Many, many people skip OpenMP completely and go > pure MPI. From a coding standpoint it's far easier to multiprocess using > one technique rather than two, and the performance gains for using both > tend to be marginal or non-existent -- at least in my experience. > > There was a long discussion a while back on the list about the pros and > cons of each approach. >
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