Re: Thread pool libgomp (openmp)

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On 5/16/2018 2:33 PM, Charles Cardoso wrote:
> When changing the number of threads dynamically in OpenMP, I've seen that
> if the next region has fewer threads than the previous, the exceed is left
> to die. So, in the future, if another region needs more threads is
> necessary calling pthread_create() again. Why doesn't libgomp maintains the
> exceed threads in the pool to reuse case necessary?
> 
libgomp and other OpenMP implementations default to keeping the entire
pool alive for an interval up to 200 ms.  Did you read up on
OMP_WAIT_POLICY ?  On libgomp Windows, I don't think these environment
variables work, but you might well wish to increase the wait.

-- 
Tim Prince



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