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Date: Tue, 13 Aug 2013 15:28:18 +0300
From: Yaniv Sapir <yaniv@...pteva.com>
To: john-dev@...ts.openwall.com
Subject: Re: Parallella: bcrypt
IIRC, 0x00002c8e means that the epiphany_start() {or is it norma_start()?}
is at address 0x00000058 or so. Can you confirm this?
When a core gets stuck, can you load another program on it, w/o first
resetting the system (try a simple c=a+b program, but do not call any
reset())?
On Tue, Aug 13, 2013 at 12:48 PM, Katja Malvoni <kmalvoni@...il.com> wrote:
> On Tue, Aug 13, 2013 at 12:35 AM, Yaniv Sapir <yaniv@...pteva.com> wrote:
>
>> Register f0444 is a special undocumented register that tells us a few
>> things about the core's status. However, the value you see does not point
>> to a specific problem. The STATUS reg does not show a problem either. Can
>> you please tell me the value of the reg. f040c?
>>
>
> F040C is zero for all cores.
>
>
>> The one thing I'd suspect is using the e_reset_core() call while a global
>> address load or fetch are in progress. In this case, you can cause a system
>> lockup if the state machines get reset while the data is in the writeback
>> stage. Do you have any situation like this in there?
>>
>
> No, I don't. I'm using e_reset_system() before computation starts and that
> is the only reset.
>
>
>> I also would like to know the contents of the IVT of the stuck core. Is
>> it the same as the other cores?
>>
>
> IVT is address 0 of core? If yes, it's 0x00002ce8 and it's same for stuck
> core and for others.
>
> Katja
>
--
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Yaniv Sapir
Adapteva Inc.
1666 Massachusetts Ave, Suite 14
Lexington, MA 02420
Phone: (781)-328-0513 (x104)
Email: yaniv@...pteva.com
Web: www.adapteva.com
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