On Mon, Jul 14, 2008 at 01:08:23PM +0100, Jon Harrop wrote:
> I believe you are correct. Moreover, I suspect that adding support for OpenMP
> to OCaml would be difficult because the current OCaml implementation is
> thread unsafe.
OpenMP isn't your typical library. It's a set of wierd preprocessor
directives which are added directly into C/C++ code (and I believe
FORTRAN too). Things like:
#pragma omp parallel for
for (i = 0; i < 100; i++)
{
a[i] = k * b[i];
}
The, erm, feature here is that the code still gives the same result
(just more slowly) if the #pragmas are simply ignored.
I recently saw Ulrich Drepper giving a talk about OpenMP and it was
interesting in a 'what are the C programmers smoking nowadays' kind of
way. The barriers to porting OpenMP to OCaml go far beyond lack or
otherwise of concurrent garbage collection.
Rich.
--
Richard Jones
Red Hat
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