Re: [Discuss-gnuradio] Debugging polar code crashes

[Cinaed Simson]

On 07/13/2017 12:03 AM, Johannes Demel wrote:
> Hi Alex,
> 
> could you be more specific about
> 'When I drop the POLAR code configurator block on the canvas, the
> gnuradio program turns down.'?
> Does GRC quit with an error? Does it turn dark and is unresponsive? Is
> there anything printed on the commandline?
> 
> Cheers
> Johannes

Hey, I had that problem too!

In my case, all the tests pass - I have the correct version of GSL
installed - namely 1.16

But I couldn't even load the polar grc files.

When I press open on the grc it hangs - the grc was consuming 100% of
the cpu.

Eventually I had to kill it.

I first noticed it in gnuradio-3.7.10. I'm currently running
gnuradio-3.7.12git and I just checked and the problem is still there.

And I can't generate the python code using grcc - both polar grc
examples generate errors.

-- Cinaed


> 
> 
> On 12.07.2017 18:04, Marcus Müller wrote:
>> Those test failures aren't great, but I think they might be bugs in the
>> tests.
>>
>> So, OK, can't remember what you need to do under Ubuntu to get the full
>> Python debugging capability in GDB, but I wrote a (slightly dated, since
>> the python commands have improved) tutorial on debugging crashing Python
>> applications [1].
>> The idea is to simply execute your minimal crashing example using
>>
>> gdb --args python2 /path/to/flowgraph.py
>> (gdb) run
>> <wait for crash>
>> (gdb) backtrace
>>
>> and figure out why where how things crash. If you got a backtrace, and
>> don't immediately see how to proceed (hint: print a few local variables,
>> if possible, using gdb's "print" command), share it with the mailing list
>>
>> Best regards,
>> Marcus
>>
>> [1]https://wiki.gnuradio.org/index.php/TutorialsGDB
>> On 07/12/2017 05:50 PM, Alex Homero Rivadeneira Erazo wrote:
>>> I am using ubuntu 16.04 LTS.
>>>
>>> At the end of the make test, I have obtained some failures:
>>>
>>> 97% tests passed, 6 tests failed out of 218
>>>
>>> Total Test time (real) = 142.49 sec
>>>
>>> The following tests FAILED:
>>> 48 - qa_ctrlport_probes (Failed)
>>> 59 - qa_cpp_py_binding (Failed)
>>> 76 - qa_cpp_py_binding_set (Failed)
>>> 124 - qa_filterbank (Failed)
>>> 154 - qa_ofdm_txrx (Failed)
>>> 197 - qa_fading_model (Failed)
>>> Errors while running CTest
>>> Makefile:61: recipe for target 'test' failed
>>> make: *** [test] Error 8
>>>
>>> Best regards,
>>>
>>> Alex
>>>
>>>
>>>
>>>
>>>
>>>
>>> On Wed, Jul 12, 2017 at 11:46 AM, Marcus Müller
>>> <address@hidden <mailto:address@hidden>> wrote:
>>>
>>>     That might still give us enough debug info. Which Linux distro are
>>>     we talking about (or, is it Linux at all?)
>>>
>>>     Best regards,
>>>
>>>     Marcus
>>>
>>>
>>>     On 07/12/2017 05:30 PM, Alex Homero Rivadeneira Erazo wrote:
>>>>     Hi Marcus
>>>>
>>>>     At this moment, I am installing the
>>>>     gnuradio 3.7.12git-171-get72c77bc from source, which is the same
>>>>     that I installed with pybombs . Unfortunately, I just already
>>>>     built the gnuradio with "make && make test". The gnuradio that I
>>>>     had with the standard installation was gnuradio 3.7.9
>>>>
>>>>     Thanks
>>>>
>>>>     Best regards,
>>>>
>>>>     Alex
>>>>
>>>>
>>>>
>>>>
>>>>     On Wed, Jul 12, 2017 at 11:13 AM, Marcus Müller
>>>>     <address@hidden <mailto:address@hidden>> wrote:
>>>>
>>>>         Hi Alex,
>>>>
>>>>         that does indeed sound like a bug. Things shouldn't be
>>>> crashing!
>>>>
>>>>         So, what's the distribution you're working with? Maybe I can
>>>>         help you a bit with the debugging. If you're, at the moment,
>>>>         building GNU Radio, make sure that the CMake parameters
>>>>         contain -DCMAKE_BUILD_TYPE=RelWithDebInfo , so that we get
>>>>         debugging symbols :)
>>>>
>>>>         Best regards,
>>>>
>>>>         Marcus
>>>>
>>>>
>>>>         On 07/12/2017 05:11 PM, Alex Homero Rivadeneira Erazo wrote:
>>>>>         Hi Marcus
>>>>>
>>>>>         Based on your suggestion I have deleted my Nabbles account.
>>>>>
>>>>>         Respect to my problem with the POLAR code
>>>>>         configurator block, I checked the discussion threads, but
>>>>>         anyone gave a solution.
>>>>>
>>>>>         Note that this problem does not happen with
>>>>>         a gnuradio installed with the distribution's package manager
>>>>>         (standard installation). However, the problem with this
>>>>>         installation method is that gnuradio is not up to date and
>>>>>         it does not have all the blocks that I need in my work. That
>>>>>         is why I used pybombs to install gnuradio which has the
>>>>>         blocks that I need. Now the problem is that gnuradio with
>>>>>         pybombs does work with the POLAR code configurator block.
>>>>>         When I drop the POLAR code configurator block on the canvas,
>>>>>         the gnuradio program turns down.
>>>>>
>>>>>         At this moment, I am installing gnuradio from source. If you
>>>>>         have other ideas please tell me.
>>>>>
>>>>>         Thanks
>>>>>
>>>>>         Best regards,
>>>>>
>>>>>         Alex
>>>>>
>>>>>
>>>>>
>>>>>         On Wed, Jul 12, 2017 at 9:43 AM, Marcus Müller
>>>>>         <address@hidden <mailto:address@hidden>>
>>>>>         wrote:
>>>>>
>>>>>             Hi Alex,
>>>>>
>>>>>             I hope you do get an answer, but that mail from Jose is
>>>>>             from the
>>>>>             beginning of 2016 – not extremely likely.
>>>>>
>>>>>             Anyway, have you seen the other answers that Jose got?
>>>>>             If not: That's Nabble's fault. I never tire to repeat:
>>>>>             Nabble is just a terrible, terrible web frontend to use
>>>>>             the official GNU
>>>>>             Radio Mailing list.
>>>>>
>>>>>             It's not the official mailing list archive. It never
>>>>>             was, and it never
>>>>>             will be. The official way to sign up for the mailing
>>>>> list is
>>>>>
>>>>>             https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
>>>>>             <https://lists.gnu.org/mailman/listinfo/discuss-gnuradio>
>>>>>
>>>>>             and there's a link to the official mailing list archive,
>>>>>             too.
>>>>>
>>>>>             I'd recommend deleting your Nabble account, and directly
>>>>>             signing up
>>>>>             under the above address with your email account. It's
>>>>>             really easier to
>>>>>             use a proper email client (eg. GMail's web frontend) and
>>>>>             simply the
>>>>>             mails than Nabble. Nabble breaks discussion threads, it
>>>>>             makes answers
>>>>>             invisible, and it has cost us hours and hours of
>>>>>             unnecessary work so
>>>>>             far. PLEASE, don't use Nabble.
>>>>>
>>>>>             Best regards,
>>>>>
>>>>>             Marcus
>>>>>
>>>>>
>>>>>             On 07/12/2017 01:52 PM, Alex Rivadeneira wrote:
>>>>>             > Dear Jose
>>>>>             >
>>>>>             > Can you tell me if you solved the problem with the
>>>>>             POLAR code configurator
>>>>>             > block? because I have the same problem in the gnuradio
>>>>>             installed with
>>>>>             > pybombs.
>>>>>             >
>>>>>             > Thanks
>>>>>             >
>>>>>             > Alex
>>>>>             >
>>>>>             >
>>>>>             >
>>>>>             > --
>>>>>             > View this message in context:
>>>>>            
>>>>> http://gnuradio.4.n7.nabble.com/polar-code-example-tp58407p64520.html
>>>>>            
>>>>> <http://gnuradio.4.n7.nabble.com/polar-code-example-tp58407p64520.html>
>>>>>
>>>>>             > Sent from the GnuRadio mailing list archive at
>>>>> Nabble.com.
>>>>>             >
>>>>>             > _______________________________________________
>>>>>             > Discuss-gnuradio mailing list
>>>>>             > address@hidden
>>>>> <mailto:address@hidden>
>>>>>             >
>>>>>             https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
>>>>>             <https://lists.gnu.org/mailman/listinfo/discuss-gnuradio>
>>>>>
>>>>>
>>>>>             _______________________________________________
>>>>>             Discuss-gnuradio mailing list
>>>>>             address@hidden <mailto:address@hidden>
>>>>>             https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
>>>>>             <https://lists.gnu.org/mailman/listinfo/discuss-gnuradio>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>         --
>>>>>         Regards,
>>>>>
>>>>>         Alex Homero Rivadeneira E.
>>>>>         Cell: 438 397-8330 <tel:%28438%29%20397-8330>
>>>>
>>>>
>>>>
>>>>
>>>>     --
>>>>     Regards,
>>>>
>>>>     Alex Homero Rivadeneira E.
>>>>     Cell: 438 397-8330 <tel:%28438%29%20397-8330>
>>>
>>>
>>>
>>>
>>> -- 
>>> Regards,
>>>
>>> Alex Homero Rivadeneira E.
>>> Cell: 438 397-8330
>>
>>
>>
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