Re: [Discuss-gnuradio] S printouts and then either U printouts (and fails/stops transmitting) or seg fault with 4 USRPs

[Ed Criscuolo]

Do you have four unique IP addresses assigned to the four USRPs?
If they all have the same default address, this could cause the four
packet streams to look like one stream, but the sequence numbers
wouldn't track, hence the "SSSS"s.

@(^.^)@  Ed


On 6/23/16 10:24 PM, Pavan Yedavalli wrote:
> Just an update on this:
>
> I switched everything to a desktop with a dedicated ethernet port, and
> connected all 4 USRPs to a switch, which is then directly connected via
> ethernet to the computer. This has eliminated the Us, which means that
> it is actually working decently (and not crapping out). Thanks to all
> who advised with that. However, multiple Ss still get printed out at
> basically every transmission. In addition, there are sometimes warnings
> that say:
>
> SSSSSSSSSSS
> UHD Error:
>      Control packet attempt 0, sequence number 452:
>      RuntimeError: no control response, possible packet loss
>
> This happens occasionally, but the Ss get printed out every time. While
> it isn't blocking, since I am actually getting transmissions and it is
> not crashing, I am still curious about how to solve this S problem.
> Thanks again!
>
> --
> Pavan
>
>
> _______________________________________________
> Discuss-gnuradio mailing list
> address@hidden
> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio