On Fri, 16 Nov 2012, Howard Chu wrote:
David Lang wrote:
barriers keep getting mentioned because they are a easy concept to
understand.
"do this set of stuff before doing any of this other set of stuff, but I
don't
care when any of this gets done" and they fit well with the
userspace,
it just means that the cost of doing the operation will vary depending on the
hardware that you have. This also means that if new hardware introduces a new
way of implementing this, that improvement can be passed on to the users without
needing application changes.
David Lang
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