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<p class="MsoNormal">HI all,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">What’s the default size for the stack of the OpenMP threads in x86 and and ppc64 in the OpenMP runtime?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I have a Fortran program which allocates more than a 1MB on the stack for each thread. On x86 runs correctly, but on ppc64 it seg faults.<o:p></o:p></p>
<p class="MsoNormal">I am seeing that each thread in x86 has a stacksize of 4096kb while on ppc64 is 1024kb.
<o:p></o:p></p>
<p class="MsoNormal">If I increase the stacksize with OMP_STACKSIZE the program runs correctly also on Power, but it fails if I only set “ulimit -s unlimited”, which make sense since ulimit should only change the stacksize for the main thread but not for the
other threads.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Is this the expected behavior and the correct solution is to set OMP_STACKSIZE?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks.<o:p></o:p></p>
<p class="MsoNormal">Simone<o:p></o:p></p>
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