[Cbe-oss-dev] Need for explanation about the dmabench bug

[Nathalie Casati]

Hi Geoff,

thanks for your answer. I don't really mind about that SDK app. I just
wanted to know if this is a known issue.

I'm about to install some more playstations and I will try your kernel
on those. When it's done I will try this dmabench again and see if the
problem is still there.
I will also try strace when I'll have the machine physically reachable,
so that I can reboot it.

Bests,

Nathalie

Geoff Levand wrote:
> Nathalie Casati wrote:
>   
>> Hi,
>>
>> I've been playing with the dmabench app included in the SDK. After a
>> short while I discovered that launching it on 5 SPEs causes the Cell (in
>> my case a playstation3) to freeze completely.
>>
>> I found this post :
>> http://www.ibm.com/developerworks/forums/message.jspa?messageID=13985391
>> regarding the subject. It is not very precise about the cause of this
>> problem, nor the solution.
>> I'm running gentoo with a patched 2.6.23 kernel (ps3-sources included in
>> the cell overlay).
>>
>> Has anyone an explanation about this issue, a solution and or any other
>> idea ?
>>     
>
> I would like to help you, but I know nothing about the gentoo kernel, nor
> that SDK app.
>
> It would be helpful if you tried with the ps3-linux.git kernel, or the
> linux-2.6.git kernel, and gave more specifics.  Your report of 'causes the
> Cell to freeze completely' is of little use.  Do some debugging and try to
> isolated the problem, and give more description of what is happening.  At
> least try strace.
>
> -Geoff
>
>
> !DSPAM:26,478e457b33711804284693!
>
>