Re: [Discuss-gnuradio] Recommended PC Hardware for Performance

[Tom Lutz]

Awesome!  Thanks for the info.  I don't think I'm using the fft
filters, so I'll give that a shot.

Tom

On Tue, May 19, 2009 at 12:05 PM, Eric Blossom <address@hidden> wrote:
> On Tue, May 19, 2009 at 08:26:18AM -0400, Tom Lutz wrote:
>> This may be a somewhat banal question, but what would be the optimal
>> hardware/software configuration needed to leverage the power of
>> gnuradio?
>>
>> Core i7 versus Core2 Duo versus Other (maybe cell)?
>
> Core i7 should have higher memory bandwidth.
>
>> 64-bit Linux versus 32?
>
> 64-bit.
>
>> Any hardware acceleration/DSP cards?
>
> No.
>
>> Amount/type of RAM?
>
> 2GB+
>
>> While running some flow graphs on an older machine, I found that I had
>> designed one of my low pass filters too tightly.  The large number of
>> taps in the FIR consumed all the processing power available, and
>> starved the USRP for data.
>
> If you're not using gr.fft_fir_filter_*, you may want to try it.
>
>> Is there a way to notify the user when a flow graph begins to fail or
>> fails intermittently?
>
> You could periodically check the value of u.noverruns()
>
> Eric
>