On 08/06/2021 07:26 PM, Jonathan Tobin wrote:
Hello,
In trying to test the ‘rx_multi_samples’ example with all four
channels on an n310. I run into an error of “Requesting too many
samples in a single burst” when I attempt a longer record (really
anything over a few seconds). Seems to be my nsamps value, but I am
unsure how to remedy the issue. Below is my argument and the terminal
output for an attempt to receive for 10 seconds:
./rx_multi_samples --args
"type=n3xx,addr=192.168.10.2,time_source=gpsdo,clock_source=gpsdo"
--rate 6.25e6 --subdev "A:0 A:1 B:0 B:1" --channels "0,1,2,3" --nsamps
625000000
Creating the usrp device with:
type=n3xx,addr=192.168.10.2,time_source=gpsdo,clock_source=gpsdo...
[INFO] [UHD] linux; GNU C++ version 7.5.0; Boost_106501;
UHD_3.15.0.HEAD-0-gaea0e2de
[INFO] [MPMD] Initializing 1 device(s) in parallel with args:
mgmt_addr=192.168.10.2,type=n3xx,product=n310,serial=3218B5F,claimed=False,addr=192.168.10.2,time_source=gpsdo,clock_source=gpsdo
[INFO] [MPM.PeriphManager] init() called with device args
`clock_source=gpsdo,time_source=gpsdo,product=n310,mgmt_addr=192.168.10.2'.
[INFO] [0/Replay_0] Initializing block control (NOC ID:
0x4E91A00000000004)
[INFO] [0/Radio_0] Initializing block control (NOC ID: 0x12AD100000011312)
[INFO] [0/Radio_1] Initializing block control (NOC ID: 0x12AD100000011312)
[INFO] [0/DDC_0] Initializing block control (NOC ID: 0xDDC0000000000000)
[INFO] [0/DDC_1] Initializing block control (NOC ID: 0xDDC0000000000000)
[INFO] [0/DUC_0] Initializing block control (NOC ID: 0xD0C0000000000002)
[INFO] [0/DUC_1] Initializing block control (NOC ID: 0xD0C0000000000002)
[INFO] [0/FIFO_0] Initializing block control (NOC ID: 0xF1F0000000000000)
[INFO] [0/FIFO_1] Initializing block control (NOC ID: 0xF1F0000000000000)
[INFO] [0/FIFO_2] Initializing block control (NOC ID: 0xF1F0000000000000)
[INFO] [0/FIFO_3] Initializing block control (NOC ID: 0xF1F0000000000000)
Using Device: Single USRP:
Device: N300-Series Device
Mboard 0: ni-n3xx-3218B5F
RX Channel: 0
RX DSP: 0
RX Dboard: A
RX Subdev: Magnesium
RX Channel: 1
RX DSP: 1
RX Dboard: A
RX Subdev: Magnesium
RX Channel: 2
RX DSP: 0
RX Dboard: B
RX Subdev: Magnesium
RX Channel: 3
RX DSP: 1
RX Dboard: B
RX Subdev: Magnesium
TX Channel: 0
TX DSP: 0
TX Dboard: A
TX Subdev: Magnesium
TX Channel: 1
TX DSP: 1
TX Dboard: A
TX Subdev: Magnesium
TX Channel: 2
TX DSP: 0
TX Dboard: B
TX Subdev: Magnesium
TX Channel: 3
TX DSP: 1
TX Dboard: B
TX Subdev: Magnesium
Setting RX Rate: 6.250000 Msps...
Actual RX Rate: 6.250000 Msps...
Setting device timestamp to 0...
Begin streaming 625000000 samples, 1.500000 seconds in the future...
[ERROR] [RFNOC RADIO] Requesting too many samples in a single burst!
Requested 12500000000, maximum is 268435455.
[INFO] [RFNOC RADIO] Note that a decimation block will increase the
number of samples per burst by the decimation factor. Your application
may have requested fewer samples.
Error: ValueError: Requested too many samples in a single burst.
Thanks,
Jonathan
That looks like a bug--have you tried this on UHD 4.recent?
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