Alphonso, looks like you've found a bug! Here's how I debugged this (it's a good and easy learning example):
- Build GNU Radio w/ debug symbols - On my system, I need to allow core dumps: Run `ulimit -c unlimited` - Then run the app, it'll produce a file called `core` - Open that with gdb: gdb /usr/bin/python core - In the gdb command line, run `bt` It'll show you it crashed on line 186. As you can see, the code makes the assumption that d_pilot_carriers is populated, which it isn't -- there's your bug! Do you want to submit a fix? M On 19.06.2015 07:04, bh...@web.de wrote: > hi martin, > i have read the manual page for the ofdm_carrier_allocator from [0] and > the ofdm introduction from [1]. i have also downloaded your examples > from [2]. > > i am testing now with this flow graph (my_graph.png). input is a vector > source with this repeating vector: > (1+1j, -1+1j, -1-1j, 1-1j, -1+1j, -1-1j). as mentioned in the previous > posts the first part (until stream_to_tagged_stream and the sinks) works. > > the structure of my occupied carriers (my_carriers.png) are the same as > yours (martin_carriers.png) apart from the length and the pilots. i have > even tried it with the range command (my_range.png). > > nothing works. the error "floating point exception" still remains. > > now i am more confused as before. i am sure it is some stupid > mistake/error and very simple but i can't figure it out. > > every help is appreciated! > thanks! > > > alphonso > > > [0] > http://gnuradio.org/doc/doxygen/classgr_1_1digital_1_1ofdm__carrier__allocator__cvc.html#details > [1] https://gnuradio.org/doc/doxygen/page_ofdm.html > [2] > http://gnuradio.org/redmine/projects/gnuradio/repository/revisions/master/show/gr-digital/examples/ofdm _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
