Hi All: I installed UHD 4.0 and GRC 3.9 on a Raspberry Pi 4B following the procedure at: https://wiki.gnuradio.org/index.php/InstallingGRFromSource_on_Raspberry_Pi However I did not specify DNEON_SIMD_ENABLE=OFF in the command cmake -DNEON_SIMD_ENABLE=OFF -DCMAKE_INSTALL_PREFIX=/usr/local ../ while building UHD. I also set the CPU Governor and Thread Priority Scheduling according to: https://kb.ettus.com/USRP_Host_Performance_Tuning_Tips_and_Tricks
Testing USRP Source->Frequency Sink in GRC at 4 MSPS with a B205mini on a headless RPI (X forwarding to a NUC7i7BNH PC) over USB3 shows an update rate (spectrum refresh rate on the display) of once per second and at 10 MSPS freezes. Running benchmark_rate at 20 MSPS will cause ERROR_CODE_TIMEOUT messages. I also overclocked the RPi4B to 2.2 GHz with the same result. Any suggestions to get higher sampling rates with the RPi4B-B205mini setup? Thanks. Arthur
_______________________________________________ USRP-users mailing list USRP-users@lists.ettus.com http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
