Re: [USRP-users] DPDK

probably not much need for > DPDK. > > DPDK is supported on the X300, X310, N300, N310, N320, N321, E320. > > --Neel Pandeya > > > > On Thu, 5 Dec 2019 at 17:16, Marcus D. Leech via USRP-users < > usrp-users@lists.ettus.com> wrote: > >> On 12/05/2019 06:06

[USRP-users] DPDK

Just wondering if there are plans to add DPDK support for the N2xx devices? -- -Keith Kotyk ___ USRP-users mailing list USRP-users@lists.ettus.com http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com

[USRP-users] GPIO ATR signals

Hello all Is it possible to switch between active-low and active-high states if using ATR on the gpios? -- -Keith Kotyk ___ USRP-users mailing list USRP-users@lists.ettus.com http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com

Re: [USRP-users] University of Saskatchewan N200 Rack

PN.png > > Anders > > > On Tue, Sep 17, 2019 at 8:19 PM Keith k via USRP-users < > usrp-users@lists.ettus.com> wrote: > >> Hey Marcus >> >> The additional connector on the front is so that we can connect both RX >> channels and a TX channel. The on

Re: [USRP-users] University of Saskatchewan N200 Rack

oyed your email :) May I ask what the individual added SMAs > do? > > I like the vertical mounting, and the additional LEDs :) > > Best regards, > Marcus > > On Mon, 2019-09-16 at 18:04 +, Keith k via USRP-users wrote: > > Hey all > > > > I thought

Re: [USRP-users] Reusing UHD transport to send signal samples between processes

Hello Piotr I can't answer your question, but I'm wondering if you plan to make this project open source? I would find a tool like this very valuable. On Thu, Nov 8, 2018 at 10:48 AM Piotr Krysik via USRP-users < usrp-users@lists.ettus.com> wrote: > Hello everyone, > > I'm considering to create

[USRP-users] Random huge delays in calls to send() causing lates

Hey everyone I'm creating an application to transmit pulses for a radar system. All pulses are given a time_spec in the future. I send out all pulses in a row, each as their own burst, and then I wait for the async_metadata messages to know when they are all completed. About every 1 in 1000

Re: [USRP-users] OVERFLOWS

out the allocation of cores >>> by isolcpus and numactl :) >>> >>> чт, 26 июл. 2018 г. в 19:07, Marcus D. Leech : >>> >>>> Make sure that you’re increasing the num_recv_frames in the device args >>>> as well >>>> >&g

Re: [USRP-users] OVERFLOWS

июл. 2018 г. в 19:07, Marcus D. Leech : > >> Make sure that you’re increasing the num_recv_frames in the device args >> as well >> >> >> Sent from my iPhone >> >> On Jul 26, 2018, at 11:10 AM, Keith k via USRP-users < >> usrp-users@lists.ettus.com

Re: [USRP-users] OVERFLOWS

How many CPU cores do you have? I've also found this a problem with multiusrp and high data rates. The solution for me was to isolate cpu cores and then use taskset to run my program on the isolated cores. This drastically reduced the number of overflows to almost none. This however will probably

Re: [USRP-users] Tx Channel out of range on UHD 3.12 and higher

dev spec you're using? >> >> There shouldn't have been any issues, and we do test releases using the >> N200, but maybe we missed a case here. >> >> -- M >> >> On 07/24/2018 12:42 PM, Keith k via USRP-users wrote: >> > Hello all >>

Re: [USRP-users] Tx Channel out of range on UHD 3.12 and higher

and we do test releases using the > N200, but maybe we missed a case here. > > -- M > > On 07/24/2018 12:42 PM, Keith k via USRP-users wrote: > > Hello all > > > > My multiusrp application will run using 3.11 and below, but when I > > switch to any version a

[USRP-users] Tx Channel out of range on UHD 3.12 and higher

Hello all My multiusrp application will run using 3.11 and below, but when I switch to any version about 3.12, I now get the following error: Error: LookupError: IndexError: multi_usrp: TX channel 140737160875440 out of range for configured TX frontends Did something change in the way that

Re: [USRP-users] x300 unrecoverable timeouts

Hello Will This sounds eerily similar to issues I've had using N200s. I basically found that working at high rates, using either STREAM_MODE_NUM_SAMPS_AND_DONE or using starts and stops was completely unusable. The system would go into an unrecoverable set of timeouts or overflows. I had to

Re: [USRP-users] timed transmission LATE issue

Hello Hojoon I've also been battling this issue. A couple other things you are going to need to be aware of is even though your application has two threads that you program, UHD also spawns its own threads to control the USRP and they are quite hungry for resources. Something that has been

[USRP-users] Multi-usrp Threads

Hello all When a multi-usrp object is first created, what purpose do the created threads serve? I'm just curious on their role, what kind of cpu utilization they need, and what level of cpu priority they need if the computer is under heavy load. Thanks. -- -Keith Kotyk

Re: [USRP-users] Different amplitudes on each RX channel with N200

list the place > to report bugs? Thanks. > > Yes, thanks. > > What version of UHD? > > Just so it doesn't get "already fixed". > > > > On Thu, Jun 14, 2018 at 5:45 PM, Marcus D. Leech via USRP-users < > usrp-users@lists.ettus.com> wrote: > &

Re: [USRP-users] Different amplitudes on each RX channel with N200

to a similar issue in my code which let me resolve my problem. Thanks. Is this list the place to report bugs? Thanks. On Thu, Jun 14, 2018 at 5:45 PM, Marcus D. Leech via USRP-users < usrp-users@lists.ettus.com> wrote: > On 06/14/2018 01:30 PM, Keith k via USRP-users wrote: > >>

[USRP-users] Different amplitudes on each RX channel with N200

Hello all I noticed in my testing that I am seeing significant mismatch in amplitude on each channel of my N200(lfrx db) with the second channel being much weaker. I thought that it was a problem with my code, but when I hook up a signal generator and split to both RX ports and use the

Re: [USRP-users] Using ZMQ

Hey Steve You could also skip ZMQ and just use shared files of samples using a VM in however you deem is the best way for your application. On Wed, May 30, 2018, 14:54 Keith k, wrote: > Hey Steve > > Do you have to use 2 computers? Can you run linux with a windows VM for > processing? Your ZMQ

Re: [USRP-users] Using ZMQ

Hey Steve Do you have to use 2 computers? Can you run linux with a windows VM for processing? Your ZMQ performance of piping samples within the same computer may be faster and more deterministic, but may not work for your situation. Also, Ive used ZMQ lots. I recommend using ROUTER/DEALER or

Re: [USRP-users] UHD and process forking

; guarantee usability of a multi_usrp after forking, but the last word on > that is Martin's. > > Maybe if you described your use case, we could chime in with approaches. > > Best regards, > Marcus > > On 14 May 2018 18:09:51 GMT+02:00, Keith k via USRP-users < &g

[USRP-users] UHD and process forking

Hello all My intuition tells me this would be a bad idea, but before I try anything with this, does anyone have any thoughts about how the multi-usrp object would react in a situation where the process has been forked? I know that the call to create a multi-usrp object will fail if called in a

Re: [USRP-users] Using multiple UHD streamers

Is it feasible for your application to just have one streamer for all your X300s, but just stream 0s on the channels you arent using? I have also found that re-configuring streamers is messy. On Tue, May 8, 2018 at 2:21 PM, Serge Malo via USRP-users < usrp-users@lists.ettus.com> wrote: > Hi all,

Re: [USRP-users] Multi N200 issues

t; On Thu, Mar 8, 2018 at 1:55 PM, Keith k via USRP-users < > usrp-users@lists.ettus.com> wrote: > >> Hey all >> >> Just wondering if anyone had a chance to look at this for me. I'd >> appreciate it immensely! Thank you. >> >> On Fri, Mar 2, 2

[USRP-users] Multi N200 issues

Hello all I'm working on a project to use 16 N200s in a multi USRP configuration for a radar project. They are synchronized using 3 Octoclocks (one master with a GPSDO, and two slaves that drive the 16 N200s). I've been getting many errors that I was hoping someone could help with. I have