[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 bugzilla-daemon at freedesktop.org
Tue Sep 2 08:20:56 PDT 2014


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

Eero Tamminen <eero.t.tamminen at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |NEEDINFO

--- Comment #5 from Eero Tamminen <eero.t.tamminen at intel.com> ---
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)?

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