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

[Eric Blossom]

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