o:discuss-gnuradio-bounces+ian.holland=rlmgroup.com...@gnu.org] On
Behalf Of Marcus D. Leech
Sent: Friday, 23 April 2010 1:48 PM
To: discuss-gnuradio@gnu.org
Subject: Re: [Discuss-gnuradio] Large number of overflows...
On 04/22/2010 07:56 PM, Matt Ettus wrote:
>
> I am pretty sure that what you are
On Thu, Apr 22, 2010 at 21:18, Marcus D. Leech wrote:
> My application does a 1Hz-resolution FFT over the data (that's a 10.6M
> point FFT!)
Who would have thought ten years ago we'd be doing 10 million point
FFTs in real-time on computers you can buy at the local store :-)
Johnathan
On 04/22/2010 07:56 PM, Matt Ettus wrote:
>
> I am pretty sure that what you are seeing is that your application is
> not keeping up. The USRP2 keeps sending data to the computer as fast
> as it generates it. The ethernet card DMAs it into some buffer in
> memory. Your app uses it and the driver
On 04/22/2010 04:38 PM, Ian Holland wrote:
Hi Matt
Myself and a colleague have created a C++ equivalent for the same
flowgraph, with realtime scheduling enabled. We still have overruns for
data rates above 2 Mbps, even on a Core i7 machine. We will try and make
a multi-threaded version to hopefu
In regards to using GRC to create the flowgraph, how can I check if
realtime scheduling is enabled, and/or enable realtime scheduling?
Select realtime scheduling in the options block. If your flow graph
fails to enable it at runtime, an error message is printed. -Josh
___
-gnuradio-bounces+ian.holland=rlmgroup.com...@gnu.org] On
Behalf Of Matt Ettus
Sent: Thursday, 22 April 2010 4:15 PM
To: Ian Holland
Cc: discuss-gnuradio@gnu.org
Subject: Re: [Discuss-gnuradio] Large number of overflows...
On 04/11/2010 09:22 PM, Ian Holland wrote:
> Hi All
>
> I am trying a
On 04/11/2010 09:22 PM, Ian Holland wrote:
Hi All
I am trying a modified example of the digital-bert routines, for
communication between 2 USRP2s, and notice that I am getting a very
large number of overflows () even with decimation rate at the
receiver of 20, and 4 samples per symbol (s
