Hi Dan,
I cut the number of frequency channels from 2k to 512 this afternoon.
When I left the lab the design was still compiling so I won’t know how it fared
until morning. I forgot to grab the resource utilization to post here. What’s
the best way to get the utilization report anyway? Should I just cut it from
the xps output in the terminal?
I haven’t tried changing the number of PFB taps yet. It’s currently set
to 4 in my design.
The model I use now utilizes a single PFB block and a single FFT block,
both configured for four simultaneous inputs.
L
> Louis P. Dartez
> Graduate Research Assistant
> STARGATE
> Center for Advanced Radio Astronomy
> University of Texas Rio Grande Valley
> (956) 372-5812
> On Oct 28, 2014, at 10:26 PM, Dan Werthimer <d...@ssl.berkeley.edu> wrote:
>
> can you cut back the number of frequency channels?
> or the number of PFB FIR taps?
> or do away with the PFB FIR entirely?
>
> best wishes,
>
> dan
>
>
> On Mon, Oct 27, 2014 at 5:36 PM, Louis Dartez <louisdar...@gmail.com> wrote:
>> Hi Dan,
>> Slices is what seems to be problem from the error report (which I can send
>> around tomorrow morning when I’m back in the lab). I seem to remember that
>> that the compiler raised an error stating that I was trying to ~80k slices
>> when only ~60k are available. I knew this would be a slippery slope when I
>> started. But it would be great if we could salvage our LX110T.
>>
>> Any chance someone out there has a ROACHI SX95T that’s just collecting dust?
>> L
>>
>> Louis P. Dartez
>>
>> Graduate Research Assistant
>>
>> STARGATE
>>
>> Center for Advanced Radio Astronomy
>>
>> University of Texas Rio Grande Valley
>>
>> (956) 372-5812
>>
>>
>> On Oct 27, 2014, at 7:31 PM, Dan Werthimer <d...@ssl.berkeley.edu> wrote:
>>
>> hi louis,
>>
>> are you running out of memory? dsp48's? slices?
>>
>> if memory, the easiest thing to do is cut back on
>> number of frequency channels.
>>
>> best,
>>
>> dan
>>
>>
>> On Mon, Oct 27, 2014 at 4:59 PM, Louis Dartez <louisdar...@gmail.com> wrote:
>>
>> Hi all,
>>
>> I have implemented a 4 channel 200MHz correlating spectrometer on a ROACH 1
>> using the Virtex5 SX95T. Currently, I am trying to get this same design to
>> compile and run on a LX110T chip instead. I know that the SX95T is much more
>> DSP intensive and more suitable for this sort of thing. During compilation
>> for the LX110T I ran into the expected issues with resources and trying to
>> use more than were available on the LX110T. I was wondering if anyone had
>> any tips/advice on how to go about this? Has anyone out there run into
>> similar situations? What knobs should I be able to tweak to get the design
>> to compile for a LX110T? Is it even possible?
>>
>> I’d be more than happy to share my mdl (slx) files if needed. :)
>>
>> Thanks in advance!
>> L
>>
>> Louis P. Dartez
>>
>> Graduate Research Assistant
>>
>> STARGATE
>>
>> Center for Advanced Radio Astronomy
>>
>> University of Texas at Brownsville
>>
>> (956) 372-5812
>>
>>
>>
