Re: [Chromium-dev] Re: [Chromium-users] Nvidia 3000G Support

[Jamison R. D. <da...@cs...>]

Hi,

I see the two white trapazoids also when I run this code on our 3000G 
opteron cluster.  However, the frames appear to be synchronized.  I ran 
swaplock -f 300 and swaplock -f 1000 on two seperate nodes.  The buffer 
swaps appear to be completely in sync.

I tested this on both the x86_64 6106 drivers and the x86_64 6111 drivers.

Jamison Daniel
Oak Ridge National Laboratory,
d5...@or...


On Wed, 6 Oct 2004, 
Chartrand Katharine N. wrote:

> They aren't really animating.  What I see is two white trapazoids not
> doing anything.  What should I see?
>
>> KNC<
>
> On Wed, 6 Oct 2004, Brian Paul wrote:
>
>>
>> Not necessarily.  The true test is looking at the screens and
>> observing if they're animating/updating in lock step.
>>
>> -Brian
>>
>> Chartrand Katharine N. wrote:
>>> Brian,
>>>
>>> If I get the following in both terminals does that mean it worked?
>>>
>>> glXQueryMaxSwapGroupsNV: maxGroups=1 maxBarriers=1
>>> glXJoinSwapGroupNV worked!
>>> glXBindSwapBarrierNV worked!
>>>
>>>
>>>> KNC<
>>>
>>>
>>>
>>> On Thu, 23 Sep 2004, Brian Paul wrote:
>>>
>>>
>>>> Chartrand Katharine N. wrote:
>>>>
>>>>> I am running nvidia 3000gs with the 6591 driver and linux 2.4.26 and I
>>>>> am not sure I have a swaplock or framelock problem.
>>>>
>>>> Unless you explicitly set the proper Render SPU options for framelock,
>>>> you're not using that facility.  And since I was never able to get the
>>>> framelock feature to work here, I'm not sure the Render SPU code is up
>>>> to snuff.
>>>>
>>>>
>>>>
>>>>> Everything
>>>>> seems to be in sync unless I have a very large data set in a particular
>>>>> application (not running over chromium).  With this application, an image
>>>>> on our multipanel display will be six inches out of alignment between
>>>>> panels as we translate it quickly.
>>>>
>>>> That sounds like ordinary network/Chromium latency.
>>>> The tilesort SPU sends geometry in round-robin order to the servers so
>>>> there is some latency in the updates from one server to the next.
>>>>
>>>>
>>>>
>>>>> My hunch, however, was that the
>>>>> problem was with
>>>>> the application, not the cards because we see the same behavior with our
>>>>> wildcats cards.
>>>>
>>>> Probably Chromium, not the application.
>>>>
>>>>
>>>>
>>>>> This 6591 driver was given to us by nvidia to stop a combination of
>>>>> problems: stereo flickering and chromium apps crashing, and it seems to
>>>>> have fixed them both.  I don't believe it is a released driver, but I will
>>>>> ask our nvidia contact if I can distribute it.  My questions are:
>>>>>
>>>>> 1. can I have a copy of your test program so I can see if I have this
>>>>> framelock problem (and don't know it!) with this 6591 driver.
>>>>
>>>> Attached.  I've sent it to so many people I figured everyone had it by
>>>> now. :)
>>>>
>>>>
>>>>
>>>>> 2. what are the exact symptoms of this type of framelock, swaplock
>>>>> problem. For example, would stereo work at all with this framelock problem
>>>>> you describe.  Would you just get a flicker in the stereo?
>>>>
>>>> Stereo would probably "work" but the left/right synchronization among
>>>> all the screens wouldn't occur.  It would confuse your eyes and maybe
>>>> give you a headache after a while.
>>>>
>>>> -Brian
>>>>
>>>
>>>
>>>
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>
>
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