Hi all,
Iam working on TMS320C55x. How can I reduce IBQ stalls in a block repeat.

Hi,

Could you please elaborate on the term "IBQ stall"?
It would be nice if you could provide a sample instruction sequence for
which you are attempting to reduce the stall.

Thanks,
Gayathri

To: c...@yahoogroups.com
From: c...@gmail.com
Date: Tue, 25 Sep 2007 19:16:45 +0530
Subject: [c55x] TMS320c55x IBQ stalls

            Hi all,
Iam working on TMS320C55x. How can I reduce IBQ stalls in a block repeat.

Hi,
Fetch
pipeline stalls is also called as IBQ stalls (Instruction Buffer Queue
Stall) .
This will occur when the code has many large
instructions (5/6 bytse).
As the processor fetches only 4 bytes every cycle,
it will not be able spatch 5- or 6-byte instructions every cycle. The fetch pipeline will
eventually stall in order to fetch more 4-byte packets from memory.
They can be encountered
with BLOCKREPEAT, BRANCH, and CALLinstructions. Some of these IBQ stalls may be resolved by
properly aligning the target address.
Kindly refer SPRU376 ( TMS320C55x ) for
more information on solving IBQ stalls.
Karthik
Balaguru

-...@yahoogroups.com wrote:
-----

To: chandrakala reddy
<c...@gmail.com>, <c...@yahoogroups.com>
From: gayathri seshadri
<g...@hotmail.com>
Sent by: c...@yahoogroups.com
Date: 09/26/2007
07:09PM
Subject: RE: [c55x] TMS320c55x IBQ stalls


Hi,

Could you please elaborate on
the term "IBQ stall"?
It would be nice if you could provide a sample instruction sequence
for
which you are attempting to reduce the stall.

Thanks,
Gayathri

To:
c...@yahoogroups.com
From: c...@gmail.com
Date: Tue, 25 Sep 2007 19:16:45
+0530
Subject: [c55x] TMS320c55x IBQ
stalls
















 


&nb
sp;  
           Hi all,
Iam working on TMS320C55x.
How can I reduce IBQ stalls in a block repeat.

     

 
 


__._,_.___







NEW!  You can now post a message or access and search the archives of this group on
DSPRelated.com:

http://www.dsprelated.com/groups/c55x/1.php<
/a>



_____________________________________

Note: If you do a simple "reply" with your email client, only the author of this
message will receive your answer.  You need to do a "reply all" if you want your
answer to be distributed to the entire group.



_____________________________________

About this discussion group:



Archives:  http://www.dsprelated.com/groups/c55x/1.php<
/a>



To Post:  Send an email to c...@yahoogroups.com



Other DSP Related Groups: http://www.dsprelated.com/groups.php














   








      
  



__,_._,___

(You need to be a member of c55x -- send a blank email to c55x-subscribe@yahoogroups.com )

Hi,

The IBQ stalls can only be removed by manually jumbling the instructions.

Regards
Naveen Agarwal
9986085124

On 9/26/07, gayathri seshadri <g...@hotmail.com> wrote:
> Hi,
>
> Could you please elaborate on the term "IBQ stall"?
> It would be nice if you could provide a sample instruction sequence for
> which you are attempting to reduce the stall.
>
> Thanks,
> Gayathri
>
> To: c...@yahoogroups.com
> From: c...@gmail.com
> Date: Tue, 25 Sep 2007 19:16:45 +0530
> Subject: [c55x] TMS320c55x IBQ stalls
>             Hi all,
> Iam working on TMS320C55x. How can I reduce IBQ stalls in a block repeat.

(You need to be a member of c55x -- send a blank email to c55x-subscribe@yahoogroups.com )

Hi all,
Thanks for your suggestions. I have applied all these techniques, but I
could not reduce IBQ stalls.
On 9/27/07, Karthik Balaguru <K...@lntinfotech.com> wrote:
>
> Hi,
>
> Fetch pipeline stalls is also called as IBQ stalls (Instruction Buffer
> Queue Stall) .
>
> This will occur when the code has many large instructions (5/6 bytse).
>
> As the processor fetches only 4 bytes every cycle, it will not be able
> spatch 5- or 6-byte instructions every cycle. The fetch pipeline will
> eventually stall in order to fetch more 4-byte packets from memory.
>
> They can be encountered with BLOCKREPEAT, BRANCH, and CALLinstructions.
> Some of these IBQ stalls may be resolved by properly aligning the target
> address.
>
> Kindly refer SPRU376 ( TMS320C55x ) for more information on solving IBQ
> stalls.
>
> Karthik Balaguru
> -...@yahoogroups.com wrote: -----
>
> To: chandrakala reddy <c...@gmail.com>, <c...@yahoogroups.com>
> From: gayathri seshadri <g...@hotmail.com>
> Sent by: c...@yahoogroups.com
> Date: 09/26/2007 07:09PM
> Subject: RE: [c55x] TMS320c55x IBQ stalls
> Hi,
>
> Could you please elaborate on the term "IBQ stall"?
> It would be nice if you could provide a sample instruction sequence for
> which you are attempting to reduce the stall.
>
> Thanks,
> Gayathri
>
> To: c...@yahoogroups.com
> From: c...@gmail.com
> Date: Tue, 25 Sep 2007 19:16:45 +0530
> Subject: [c55x] TMS320c55x IBQ stalls
>            Hi all,
> Iam working on TMS320C55x. How can I reduce IBQ stalls in a block repeat.

(You need to be a member of c55x -- send a blank email to c55x-subscribe@yahoogroups.com )