From mboxrd@z Thu Jan 1 00:00:00 1970 From: Shuang He Subject: Re: [PATCH] [WIP] i965: Use up to 80 WM threads on GT2. Date: Tue, 29 Mar 2011 08:32:04 +0800 Message-ID: <4D912884.1050100@intel.com> References: <1301334940-18506-1-git-send-email-eric@anholt.net> <4D910A2B.3030606@freedesktop.org> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; Format="flowed" Content-Transfer-Encoding: 7bit Return-path: Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by gabe.freedesktop.org (Postfix) with ESMTP id BE9829E755 for ; Mon, 28 Mar 2011 17:32:06 -0700 (PDT) In-Reply-To: <4D910A2B.3030606@freedesktop.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: intel-gfx-bounces+gcfxdi-intel-gfx=m.gmane.org@lists.freedesktop.org Errors-To: intel-gfx-bounces+gcfxdi-intel-gfx=m.gmane.org@lists.freedesktop.org To: Ian Romanick Cc: "intel-gfx@lists.freedesktop.org" List-Id: intel-gfx@lists.freedesktop.org On 2011/3/29 6:22, Ian Romanick wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > 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. The system environment description section in bug #35730 already mention it's rev09 GT1 Thanks --Shuang > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.4.11 (GNU/Linux) > Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org/ > > iEYEARECAAYFAk2RCisACgkQX1gOwKyEAw8nRgCgnC1HMyfVwx5MLiaVF4mVzprQ > oD4An2DMFJdXfYKOyvehR7x6qAQnYix6 > =4m/t > -----END PGP SIGNATURE----- > _______________________________________________ > Intel-gfx mailing list > Intel-gfx@lists.freedesktop.org > http://lists.freedesktop.org/mailman/listinfo/intel-gfx