Re: [Discuss-gnuradio] Sampling with multiple USRP N210s with one host computer

[Marcus D. Leech]

On 10/31/2013 04:54 PM, rmsrms1987 wrote:
> Hi Everyone,
>
> I recently discovered that Ettus offer a way of synchronizing up the eight
> USRPs with the following clock distribution system:
>
> https://www.ettus.com/product/details/OctoClock-G
> <https://www.ettus.com/product/details/OctoClock-G>
>
> Out of curiosity, how would one be able to connect and sample with eight
> separate USRPs with one host computer.  Would you need eight separate
> ethernet ports?  That seems like more than what a typical motherboard would
> be able to handle.
>
> Or can the USRPs all be connected to a server, which can be individually
> accessed through the host computer?
>
> Understanding how to do this will be extremely beneficial in order to gather
> some ideas for a project.
>
> Thank you very much in advance,
> Rob
You could have all of them on a single port and a 1GiGe switch, 
depending on aggregate sample rate.

But another thing to be concerned about is how much processing your 
computer can handle from 8 sample streams.

There are also quad-port 1GiGe cards available out there.