Re: [Discuss-gnuradio] USRP harware problem?

[yyzhuang]

step 3) the control software access the device entry correctly?

good box
/gnuradio/gnuradio/gnuradio-examples/python/usrp$ ./usrp_benchmark_usb.py
Testing 2MB/sec... usb_throughput = 2M
ntotal    = 1000000
nright    = 999452
runlength = 999452
delta     = 548
OK
Testing 4MB/sec... usb_throughput = 4M
ntotal    = 2000000
nright    = 1999583
runlength = 1999583
delta     = 417
OK
Testing 8MB/sec... usb_throughput = 8M
ntotal    = 4000000
nright    = 3998943
runlength = 3998943
delta     = 1057
OK
Testing 16MB/sec... usb_throughput = 16M
ntotal    = 8000000
nright    = 7999584
runlength = 7999584
delta     = 416
OK
Testing 32MB/sec... usb_throughput = 32M
ntotal    = 16000000
nright    = 15998150
runlength = 15998150
delta     = 1850
OK
Max USB/USRP throughput = 32MB/sec 

bad box:
/gnuradio/gnuradio/gnuradio-examples/python/usrp$ ./usrp_benchmark_usb.py
Testing 2MB/sec... Traceback (most recent call last):
  File "./usrp_benchmark_usb.py", line 106, in <module>
    main ()
  File "./usrp_benchmark_usb.py", line 96, in main
    ok = run_test (rate, verbose)
  File "./usrp_benchmark_usb.py", line 63, in run_test
    usrp_tx = usrp.sink_s (0, tx_interp)
  File "/usr/local/lib/python2.5/site-packages/gnuradio/usrp.py", line 228,
in __init__
    _ensure_rev2(which)
  File "/usr/local/lib/python2.5/site-packages/gnuradio/usrp.py", line 83,
in _ensure_rev2
    v = _look_for_usrp(which)
  File "/usr/local/lib/python2.5/site-packages/gnuradio/usrp.py", line 77,
in _look_for_usrp
    raise RuntimeError, "Unable to find USRP #%d" % (which,)
RuntimeError: Unable to find USRP #0



can anybody help us out? thanks a lot!
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