[Omp] A problem with guard objects and exceptions on Intel

[Michael Suess]

On Wednesday 23 August 2006 01:38, Micah Elliott wrote:
> On 2006-08-22 Michael Suess wrote:
> > I have just published a blog entry comparing the merits of
> > guard objects vs. the critical construct (with C++ and OpenMP).
> > The problem I have now is: My test programs with exceptions and
> > guard objects do not work for the Intel Compiler. Since this
> > would not be the first time I missed something, I figured I
> > would double check here before filing a bug with Intel.
> >
> > So if you find the time, please take a look at the code for the
> > guard object, enclosed in the following article:
> > http://www.thinkingparallel.com/2006/08/21/scoped-locking-vs-critical-in-
> >openmp-a-personal-shootout/
>
> I didn't take much time in looking at the code, but I did compile
> what I found on the site with icpc, and saw that you'll get the
> SEGV if you don't increase your stack limit (e.g., "ulimit -s
> unlimited" in bash).

Hi Micah,

your advice does not seem to help:

$ ulimit -s unlimited

$ ulimit -s
unlimited

$ icpc test_omp_guard_exceptions.cpp -o test_omp_guard_exceptions 
omp_guard.cpp -openmp
test_omp_guard_exceptions.cpp(18) : (col. 2) remark: OpenMP DEFINED REGION WAS 
PARALLELIZED.

$ ./test_omp_guard_exceptions
Segmentation fault

I am curious, though: Why do you think the stack size is too small? I am not 
using much stack space in my program, as far as I can see...

Thanks anyways,
Michael

-- 
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Michael Suess
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