[Bug 82808] [IVB/BYT-M/BDW] Unigine-Heaven4.0 on IVB/BYT-M/BDW performance is slower(=?UTF-8?Q?=E2=86=932x?=) ) than HSW_GT3e.

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=82808

wendy.wang at intel.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |RESOLVED
         Resolution|---                         |NOTABUG

--- Comment #6 from wendy.wang at intel.com ---
(In reply to Eero Tamminen from comment #5)
> Heaven v4 is memory bandwidth bound.  With its L4, GT3e has more memory
> bandwidth than the other HW configurations you listed, so Heaven being
> faster there is to be expected.
> 
> As to Heaven 3 being faster than Heaven 4, besides being different versions
> of the demo, they also use a different version of the Unigine engine, so
> there can well be performance affecting differences in what they do.
> 
> Is there some other platform (like Windows/Intel or Mesa/Nvidia) where there
> isn't a performance difference between v3 and v4?  Does old v3 render
> correctly with Mesa (hard to say now with bug 82897, but before that issue
> came up)?

Test on HSW-GT3e with Windows 8.1, Heaven 3 also faster than Heaven 4 by 52%.

Close this bug as not a bug.

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