March 7th Zodiac Sign

YourTango: The Tarot Horoscope For Saturday, March 7 Is Here With A Reading For Your Zodiac Sign

The Tarot Horoscope For Saturday, March 7 Is Here With A Reading For Your Zodiac Sign

Your zodiac sign's one-card tarot horoscope is here for . The Sun is in Pisces, and the Moon is entering Scorpio. Today's collective tarot card is the Sun, which is about success. Today's ...

Your zodiac sign's love horoscope is here for . On Saturday, Mercury Cazimi in Pisces occurs, bringing clarity to your romantic life. Mercury first entered Pisces on February 6 before ...

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?

-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 ...

For -O0, whether -march=native or -march= is the default still specifies the same family, so both are perfectly compatibly with -O0; and whenever another optimization level is specified, -march=native is beneficial to performance. So, for me, the fact that -O0 is the default doesn't matter for -march 's default.