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segfault on memory intensive programs
- From: Pete <null_geodesic at yahoo dot com>
- To: cygwin at cygwin dot com
- Date: Wed, 29 Mar 2006 12:21:48 -0800 (PST)
- Subject: segfault on memory intensive programs
I have some benchmarkign code
#define N 600 // Matrix rank
#define ITERATIONS 2000
int main( void )
// Set up the timer and start it ticking.
// We multiply m1 and m2, and put the result in m3.
On Cygwin, the code runs fine for a matrix rank
between 400 and 0. Somewhere N=400 and N=600, the
program segfaults under Cygwin.
However, it runs on VC++. And a Java-ized port of the
program runs fine under Sun and BEA java for N=600.
I've tried increasing the heap and stack size for
Cygwin as per the FAQ, but the FAQ's solution doesn't
seem to be working: I tried adding the key to the
registery as per
and compiling with:
gcc -Wl,--heap,4096,--stack,4096 -o foo foo.c
but nothing seems to prevent the application for
segfaulting under cygwin when N=600.
Any ideas on how I can make this program not crash
under cygwin for high matrix rank? VC++ and java can
do it. I'm sure cygwin can too.
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