RE: [Discuss-gnuradio] Underrun (using libusrp only)

[Per Zetterberg]

> Did you check to see if the machine is running at full speed? 
>  That is, not throttled back to save power?

I don't really know how to do this. Is it something I set in the BIOS ?

> Have  you tried running usrp_fft.py -d 8?
> Does it work without overruns?

I can do receive-only at 32MByte/sec without problem (also with libusrp
only).

BR/
Per

 

> -----Original Message-----
> From: 'Eric Blossom' [mailto:address@hidden 
> Sent: den 21 februari 2008 19:27
> To: Per Zetterberg
> Cc: 'Johnathan Corgan'; address@hidden
> Subject: Re: [Discuss-gnuradio] Underrun (using libusrp only)
> 
> On Thu, Feb 21, 2008 at 06:04:52PM +0100, Per Zetterberg wrote:
> > I have tried now with a better computer (Dell620) - same results.
> 
> Did you check to see if the machine is running at full speed? 
>  That is, not throttled back to save power?
> 
> > Is the USB-rate in transmit-only 32MByte/sec ?
> 
> Yes.  The USB is half-duplex.  We can sustain a total of 
> 32MB/s as the sum of the Tx and Rx data rates.
> 
> Have  you tried running usrp_fft.py -d 8?
> Does it work without overruns?
> 
> Admin note: please be sure to use the "Reply-to-All" command 
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> 
> Eric
>