I have tracked a bug in my code to a piece of code that could be simplified to
This piece of code is seg faulting while initializing the vector(gcc/clang++).Is this behavior expected?Code:/* gcc/clang -std=c++11 -mavx -o file */ #include <string> #include <vector> #include <list> extern "C" { #include <pmmintrin.h> #include <immintrin.h> } typedef unsigned long u64; typedef __m256i u256; int main( int main, char *argv[]) { std::vector<u256> stack(10); std::vector<u64> cstack(10 * 1288); }
I believe you need to have the memory allocated aligned to 32 bytes.
For more information:
VMOVAPD
EDIT:
Hmm, I am not sure anymore. Does not hurt to try?
Last edited by Florian; 09-16-2014 at 08:22 AM.
Can you use deque instead of vector? My guess is it's running into limits on the size of continuous memory.
It is too clear and so it is hard to see.
A dunce once searched for fire with a lighted lantern.
Had he known what fire was,
He could have cooked his rice much sooner.
I sorta gave up on this, may be I will look into it later with the time :-)
