Date: Tue, 12 May 2009 09:27:30 +0300 From: Mikolaj Golub <to.my.trociny@gmail.com> To: freebsd-hackers@freebsd.org Subject: Memory leak on thread removal Message-ID: <814ovqn8dp.fsf@zhuzha.ua1>
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Hi,
The code below is compiled with -fopenmp and run on FreeBSD6/7 (i386, amd64):
#include <omp.h>
#include <unistd.h>
int n = 4, m = 2;
int main () {
for (;;) {
int i;
//sleep(2);
#pragma omp parallel for num_threads(m)
for(i = 0; i < 1; i++) {}
//sleep(2);
#pragma omp parallel for num_threads(n)
for(i = 0; i < 1; i++) {}
}
return 0;
}
During the run the program's virtual memory usage constantly grows. The growth
is observed only when n != m. When running the program with uncommented
sleep() and observing the number of threads with 'top -H' I see in turn 2 or 4
threads. So it looks like memory leak when thread is removed. Should I fill
PR?
--
Mikolaj Golub
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