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Why in the world would you use xlC, unless you're masochistic enough to target IBM-AIX? PowerPC is a very well supported architecture, supported by common compi
by arghwhat 7y ago
Why in the world would you use xlC, unless you're masochistic enough to target IBM-AIX? PowerPC is a very well supported architecture, supported by common compilers and operating systems.
- StillBored 7y agoFor the same reason people use icc, it generates faster code. A couple of years ago I compiled part of the application I was building for power8. The perf was pretty bad, so I rebuilt parts of it with xlc, and it was literally over 2x faster. That made the machine competitive/faster than the x86's we were using. Now GCC/clang have bee getting better and the gap with icc is nearly closed. I'm not sure how much of that applies to xlc, but i'm betting there hasn't been nearly as much work optimizing for POWER as there has been for arm and x86.
- alttab 7y agoAt one point in my career I was masochistic enough to work at IBM in the AIX power division. We were working on sub-components of DB2 where speed was critical to the point where production configurations took advantage of uDAPL as well. Needless to say I quit...