Hey Daniel, thanks, this could be a bug. Can you please post this issue and your YAML file to github.com/EttusResearch/uhd/issues?
Many thanks --M On Thu, Feb 5, 2026 at 9:56 AM Daniel Ozer <[email protected]> wrote: > it seems that the problem is when I use more than 8 eps. > but i don't find any limitation on this. > > בתאריך יום ד׳, 28 בינו׳ 2026 ב-10:34 מאת Daniel Ozer < > [email protected]>: > >> Hello everyone, >> I need to create a bitfile for the X440 usrp (based on the X4_200 >> variant, with uhd 4.9.0.0) which takes each rx port split it 2^n ports, >> each port go to a ddc then to the eps. >> While i managed to accomplish it when the number of the eps is >> equal/lower than 8, each time when there is more than 8 eps i successfully >> passed the creation of the bitfile but when trying to load (using the >> uhd_image_loader) it on the usrp i get the following error at the end: >> >> [ERROR] [RFNOC::GRAPH] Caught exception while initializing graph: >> RfnocError: Specified destination address is unreachable: 1:0 >> Error: RuntimeError: Failure to create rfnoc_graph >> >> I tried many variation (see the attached yml) -which include adding to >> all eps True on the CTRL option, i tried to use only 2 eps with 8 in_ports >> and more. >> >> What may cause the problem? >> it seems in the documation there is no limit for the number of the eps >> (or ddc,splitter) as long as I managed to implement it successfully on the >> fpga. >> >> thank you all in advance. >> > _______________________________________________ > USRP-users mailing list -- [email protected] > To unsubscribe send an email to [email protected] >
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