I have this system booted to ubuntu 14.04 and it has gcc version 4.8.  Should I be upgrading to a new compiler and tool chain version from the linaro site?  I was hoping to have a cpu flag for thunderx and not have to use cortex-a53.  Any ideas on what levels of code I should move to so I have the latest for performance.

Regards,
Vince

Vincent P. Mulligan
512-973-1045 off
845-453-7493 cell