On Dec 14, 2007 6:41 PM, Tom Elken <[EMAIL PROTECTED]> wrote: > > -----Original Message----- > > From: Eray Ozkural [mailto:[EMAIL PROTECTED] > > Well, then, is there really such a thing that extracts > > threads from those > > horrible C codes and generates MPI code? > > I have heard of SW tools that try to do some of that, but they did not > achieve much commercial success. > But that is not what I meant.
Sorry for the misunderstanding. > I guess I was relying on memory of readers about my original post about > this subject. Since that post was way back in November, that was a > dangerous assumption. Thankfully we have an archive: > http://www.beowulf.org/archive/2007-November/020211.html > > 'Autoparallel features with MPI' came from this in the original post: > "I was wondering how many people use either auto-parallel compiler > features, or multi-threaded math libraries (Goto, MKL, ACML, etc.) to > provide some thread-level parallelism on a cluster where you primarily > use MPI to achieve your parallel execution.*" > > So I meant that the source code is parallelized using MPI. Then in an > effort to create something like a hybrid MPI/OpenMP program, but without > having to add the OpenMP directives, you use the automatic > parallelization feature of common compilers: > -parallel in the Intel compiler > -apo in the PathScale compiler > -Mconcur in the PGI compiler, etc. > to find loops which can profitably be parallelized using threads. Well, then, I seem to recall, only in a very blurred fashion, some pragmas of the SGI compiler. I even recall there was support in STL, or maybe I am making up things. Quite possible. I hadn't realized there was auto parallel features in so many compilers, thank you for the information. Do these guys work well? Best, -- Eray Ozkural, PhD candidate. Comp. Sci. Dept., Bilkent University, Ankara http://www.cs.bilkent.edu.tr/~erayo Malfunct: http://myspace.com/malfunct ai-philosophy: http://groups.yahoo.com/group/ai-philosophy _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
