On Fri, Jul 08, 2011 at 05:57:17AM +0000, Höin Michael (hoim) wrote: > Hi all > > I have a simulation problem with my time interleaving block. If I simulate my > block the most time all tests get passed, but in average every 7th simulation > the tests don't pass and I get the message: > > Traceback (most recent call last): > File "./qa_howto.py", line 239, in test_007_time_interleaving_vff > self.assertFloatTuplesAlmostEqual (expected_result_0, result_data0, 6) > File "/usr/local/lib/python2.6/dist-packages/gnuradio/gr_unittest.py", line > 85, in assertFloatTuplesAlmostEqual > self.assertEqual (len(a), len(b)) > AssertionError: 86016 != 80640 > > Had somebody in the past the same problem? I have no idea what the fault > could be. > Any idea? Any help will be appreciated.
Hi Michael, are you using free-running simulations, e.g. by reading from a file and without any kind of throttling? If so, try adding a throttle and see what happens. Note that if this helps, then there's probably a bug in GNU Radio (assuming you've tested the hell out of your own code). I've seen flow graphs randomly produce signal processing errors when run without any kind of throttle (in particular, when running unit tests from large pre-recorded IQ-files), but so far I haven't been able to cook up a test scenario with which this could be properly tested. However, whenever I've taken my code to the antenna where the USRP limits the incoming data rate, these errors have vanished. MB -- Karlsruhe Institute of Technology (KIT) Communications Engineering Lab (CEL) Dipl.-Ing. Martin Braun Research Associate Kaiserstraße 12 Building 05.01 76131 Karlsruhe Phone: +49 721 608-43790 Fax: +49 721 608-46071 www.cel.kit.edu KIT -- University of the State of Baden-Württemberg and National Laboratory of the Helmholtz Association
pgpT53bLhjjgk.pgp
Description: PGP signature
_______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
