openmp and vector

General OpenMP discussion

openmp and vector

Postby rkata » Mon Oct 17, 2011 3:57 am

Hi anyone.
I'm beginner in using of the OpenMP. I'd like to know it is possible to make parallelization for the following circle:

vector<int> v;
int t;

#pragma omp parallel for shared(v) private(t)
for(t = 0; t < 1000; t++)
v.push_back(t);// or other variant - v.insert(v.begin(), t);

It is task for investigations only. My current result - I have crash during program execution....

Re: openmp and vector

Postby ftinetti » Mon Oct 17, 2011 3:42 pm


I'm not an expert, but it seems to be that vector is not thread safe. I've found some comments on this at ... turn-index ... d-crashing

So it seems to be that there is not other way than synchronizing access via critical, for example... thus serializing the whole for if no other work is done...

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