From: Ian Romanick <idr@freedesktop.org>
To: Eric Anholt <eric@anholt.net>
Cc: intel-gfx@lists.freedesktop.org
Subject: Re: [PATCH] [WIP] i965: Use up to 80 WM threads on GT2.
Date: Mon, 28 Mar 2011 15:22:35 -0700 [thread overview]
Message-ID: <4D910A2B.3030606@freedesktop.org> (raw)
In-Reply-To: <1301334940-18506-1-git-send-email-eric@anholt.net>
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On 03/28/2011 10:55 AM, Eric Anholt wrote:
> Here's an idea for an SNB performance improvement from the specs. It
> says that on GT2 you should be able to use 80 threads if "WIZ Hashing
> Disable in GT_MODE register enabled". On my system (supposedly GT2),
> that bit (bit 6 of 0x20d0) is unset. In testing, with intel_reg_write
> 0x20d0 0x00400040 (it only successfully took once, I suspect due to
> FORCEWAKE, which also means that I can't necessarily trust that the
> bit was unset originally), I got only hangs from 3D.
So, we're currently using too many threads in some cases? Could this be
related to bug #35730? In that case the failure seems to be limited to
SugarBay. I believe that's GT1, but I can never get the code names for
these chips straight.
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next prev parent reply other threads:[~2011-03-28 22:22 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-28 17:55 [PATCH] [WIP] i965: Use up to 80 WM threads on GT2 Eric Anholt
2011-03-28 22:22 ` Ian Romanick [this message]
2011-03-29 0:32 ` Shuang He
2011-03-29 4:43 ` Eric Anholt
2011-03-29 6:52 ` Chris Wilson
2011-03-28 22:37 ` Ben Widawsky
2011-03-29 4:46 ` Eric Anholt
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