[Intel-gfx] TIMESTAMP register

[Chris Wilson]

On Wed, 18 Apr 2012 07:53:36 +0000, "Lawrynowicz, Jacek" <jacek.lawrynowicz at intel.com> wrote:
> But how would I synchronize GPU and CPU clocks without access to the TIMESTAMP 
> register?
Issue a pipecontrol, compensate for the execution latency.

> And are you sure that over time both clocks won't desynchronize?
Given the assurrances made in the bspec, I'm certain the timestamp
will prove to be bogus and drift.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre