Re: Using ZMQ source blocks with a separate process
Hi Christoph and Michael, After many trials and failures I have created https://github.com/gnuradio/gnuradio/issues/3217 As far as the vmcircbuf issue was concerned, performing a `sudo ldconfig` fixed that. I have been unable to correlate these versions: Current libzmq version is 4.3.1 Current pyzmq version is 18.1.1 Thank you for your interest and help! --- Barry Duggan KV4FV On 2020-02-18 09:43, Christoph Mayer wrote: Hi Barry, I have been able to use various Python examples to test between processes, but when I try to use a GRC block, it fails. Are there restrictions which prohibit data exchange outside the gnuradio realm? Make sure to use the same ZMQ version as is used by GNURadio. Cheers Christoph
Re: Using ZMQ source blocks with a separate process
I have a freshly built GR 3.8.1.0-rc1 and GRC 3.8.1.0 on rPi. A simple flowgraph of ZMQ PULL Message Source feeding a Message Debug gives the following errors: ``` Executing: /usr/bin/python3 -u /home/pi/GRdev/msg_test.py libEGL warning: DRI2: failed to authenticate qt5ct: using qt5ct plugin /home/pi/.gnuradio/prefs/vmcircbuf_default_factory: No such file or directory vmcircbuf_createfilemapping: createfilemapping is not available gr::vmcircbuf_sysv_shm: shmat (2): Invalid argument gr::vmcircbuf_sysv_shm: shmat (2): Invalid argument gr::vmcircbuf_sysv_shm: shmat (2): Invalid argument ``` /home/pi/.gnuradio/prefs/vmcircbuf_default_factory contains: gr::vmcircbuf_mmap_shm_open_factory --- Barry Duggan KV4FV On 2020-02-18 09:18, Michael Dickens wrote: GR's ZMQ should work across threads, processes, and networks; between GR and non-GR so long as the packet formatting is correct. I've used ZMQ between GR within a network, never done this between GR and non-GR though ... so maybe this is an aspiration rather than guarantee? - MLD On Mon, Feb 17, 2020 at 9:07 PM Barry Duggan wrote: Hi, I would like to use one of the ZMQ source blocks (such as ZMQ PULL Message Source) to communicate with a separate Python process. I have been able to use various Python examples to test between processes, but when I try to use a GRC block, it fails. Are there restrictions which prohibit data exchange outside the gnuradio realm? Thanks for your help. -- Barry Duggan KV4FV -- Michael Dickens Ettus Research Technical Support Email: supp...@ettus.com Web: https://ettus.com/
Re: Using ZMQ source blocks with a separate process
Hi Barry, >> I have >> been able to use various Python examples to test between processes, but >> when I try to use a GRC block, it fails. Are there restrictions which >> prohibit data exchange outside the gnuradio realm? >> Make sure to use the same ZMQ version as is used by GNURadio. Cheers Christoph
Re: Using ZMQ source blocks with a separate process
GR's ZMQ should work across threads, processes, and networks; between GR and non-GR so long as the packet formatting is correct. I've used ZMQ between GR within a network, never done this between GR and non-GR though ... so maybe this is an aspiration rather than guarantee? - MLD On Mon, Feb 17, 2020 at 9:07 PM Barry Duggan wrote: > Hi, > > I would like to use one of the ZMQ source blocks (such as ZMQ PULL > Message Source) to communicate with a separate Python process. I have > been able to use various Python examples to test between processes, but > when I try to use a GRC block, it fails. Are there restrictions which > prohibit data exchange outside the gnuradio realm? > > Thanks for your help. > -- > Barry Duggan KV4FV > > -- Michael Dickens Ettus Research Technical Support Email: supp...@ettus.com Web: https://ettus.com/
Using ZMQ source blocks with a separate process
Hi, I would like to use one of the ZMQ source blocks (such as ZMQ PULL Message Source) to communicate with a separate Python process. I have been able to use various Python examples to test between processes, but when I try to use a GRC block, it fails. Are there restrictions which prohibit data exchange outside the gnuradio realm? Thanks for your help. -- Barry Duggan KV4FV
