Associated Press News on MSN: March Madness: An eighth grader from Pittsburgh is all alone with a perfect women's NCAA bracket
March Madness: An eighth grader from Pittsburgh is all alone with a perfect women's NCAA bracket
WTOP News: March Madness: An eighth grader from Pittsburgh is all alone with a perfect women’s NCAA bracket
March Madness: An eighth grader from Pittsburgh is all alone with a perfect women’s NCAA bracket
-march=foo implies -mtune=foo unless you also specify a different -mtune. This is one reason why using -march is better than just enabling options like -mavx without doing anything about tuning. Caveat: -march=native on a CPU that GCC doesn't specifically recognize will still enable new instruction sets that GCC can detect, but will leave -mtune=generic. Use a new enough GCC that knows about ...
What are the differences and tradeoffs between -march=haswell, -march=core-avx2, and -mavx2 for compiling avx2 intrinsics? I know that -mavx2 is a flag and -march=haswell/core-avx2 are architectures which just translate to a bunch of flags. So -mavx2 is a subset of the other two. But beyond that, how do I choose the right one for my application?
Using -march will also allow you more possibilities to use 3rd party closed source as well. You should be able to link -mcpu=cortex-r5 with -march=armv7-r code; well it is fine in one directions, so the tools may complain.
For -O0, whether -march=native or -march=