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Re: [Discuss-gnuradio] (de)modulation problems gnuradio 3.7.3...also GRC


From: rwfisheriv
Subject: Re: [Discuss-gnuradio] (de)modulation problems gnuradio 3.7.3...also GRC FFT missing axis labels
Date: Thu, 20 Mar 2014 02:25:35 +0000 (UTC)

Since the LastTests.log file was so large (150K) I extracted a few error blocks from the file.  I'm attempting to compile this on a PowerBook G4 (PowerPC architecture) running Ubuntu 12.04.


RUN_VOLK_TESTS: volk_32fc_s32fc_multiply_32fc(20462,1)
Volk warning: no arch found, returning generic impl
unknown location(0): fatal error in "volk_32fc_s32fc_multiply_32fc_test": memory access violation at address: 0x105d6000: no mapping at fault address
/home/fisher/gnuradio/volk/lib/testqa.cc(88): last checkpoint

*** 1 failure detected in test suite "Master Test Suite"
<end of output>
Test time =   2.13 sec
----------------------------------------------------------
Test Failed.
"qa_volk_test_all" end time: Mar 19 20:52 EDT
"qa_volk_test_all" time elapsed: 00:00:02
----------------------------------------------------------

53/178 Testing: qa_add_mult_div_sub
53/178 Test: qa_add_mult_div_sub
Command: "/bin/sh" "/home/fisher/gnuradio/build/gr-blocks/python/blocks/qa_add_mult_div_sub_test.sh"
Directory: /home/fisher/gnuradio/build/gr-blocks/python/blocks
"qa_add_mult_div_sub" start time: Mar 19 20:55 EDT
Output:
----------------------------------------------------------
Segmentation fault (core dumped)
<end of output>
Test time =   3.47 sec
----------------------------------------------------------
Test Failed.
"qa_add_mult_div_sub" end time: Mar 19 20:55 EDT
"qa_add_mult_div_sub" time elapsed: 00:00:03

53/178 Testing: qa_add_mult_div_sub
53/178 Test: qa_add_mult_div_sub
Command: "/bin/sh" "/home/fisher/gnuradio/build/gr-blocks/python/blocks/qa_add_mult_div_sub_test.sh"
Directory: /home/fisher/gnuradio/build/gr-blocks/python/blocks
"qa_add_mult_div_sub" start time: Mar 19 20:55 EDT
Output:
----------------------------------------------------------
Segmentation fault (core dumped)
<end of output>
Test time =   3.47 sec
----------------------------------------------------------
Test Failed.
"qa_add_mult_div_sub" end time: Mar 19 20:55 EDT
"qa_add_mult_div_sub" time elapsed: 00:00:03
----------------------------------------------------------
78/178 Testing: test_gr_filter
78/178 Test: test_gr_filter
Command: "/bin/sh" "/home/fisher/gnuradio/build/gr-filter/lib/test_gr_filter_test.sh"
Directory: /home/fisher/gnuradio/build/gr-filter/lib
"test_gr_filter" start time: Mar 19 20:57 EDT
Output:
----------------------------------------------------------
VOLK: Error allocating memory (posix_memalign: 22)
VOLK: Error allocating memory (posix_memalign: 22)
VOLK: Error allocating memory (posix_memalign: 22)
VOLK: Error allocating memory (posix_memalign: 22)
VOLK: Error allocating memory (posix_memalign: 22)
Segmentation fault (core dumped)
........
<end of output>
Test time =   1.08 sec
----------------------------------------------------------
Test Failed.
"test_gr_filter" end time: Mar 19 20:57 EDT
"test_gr_filter" time elapsed: 00:00:01
----------------------------------------------------------

79/178 Testing: qa_interp_fir_filter
79/178 Test: qa_interp_fir_filter
Command: "/bin/sh" "/home/fisher/gnuradio/build/gr-filter/python/filter/qa_interp_fir_filter_test.sh"
Directory: /home/fisher/gnuradio/build/gr-filter/python/filter
"qa_interp_fir_filter" start time: Mar 19 20:57 EDT
Output:
----------------------------------------------------------
VOLK: Error allocating memory (posix_memalign: 22)
VOLK: Error allocating memory (posix_memalign: 22)
VOLK: Error allocating memory (posix_memalign: 22)
VOLK: Error allocating memory (posix_memalign: 22)
VOLK: Error allocating memory (posix_memalign: 22)
VOLK: Error allocating memory (posix_memalign: 22)
VOLK: Error allocating memory (posix_memalign: 22)
Segmentation fault (core dumped)
<end of output>
Test time =   3.62 sec
----------------------------------------------------------
Test Failed.
"qa_interp_fir_filter" end time: Mar 19 20:57 EDT
"qa_interp_fir_filter" time elapsed: 00:00:03
----------------------------------------------------------
81/178 Testing: qa_freq_xlating_fir_filter
81/178 Test: qa_freq_xlating_fir_filter
Command: "/bin/sh" "/home/fisher/gnuradio/build/gr-filter/python/filter/qa_freq_xlating_fir_filter_test.sh"
Directory: /home/fisher/gnuradio/build/gr-filter/python/filter
"qa_freq_xlating_fir_filter" start time: Mar 19 20:57 EDT
Output:
----------------------------------------------------------
VOLK: Error allocating memory (posix_memalign: 22)
VOLK: Error allocating memory (posix_memalign: 22)
VOLK: Error allocating memory (posix_memalign: 22)
Segmentation fault (core dumped)
<end of output>
Test time =   4.98 sec
----------------------------------------------------------
Test Failed.
"qa_freq_xlating_fir_filter" end time: Mar 19 20:57 EDT
"qa_freq_xlating_fir_filter" time elapsed: 00:00:04
----------------------------------------------------------

82/178 Testing: qa_fir_filter
82/178 Test: qa_fir_filter
Command: "/bin/sh" "/home/fisher/gnuradio/build/gr-filter/python/filter/qa_fir_filter_test.sh"
Directory: /home/fisher/gnuradio/build/gr-filter/python/filter
"qa_fir_filter" start time: Mar 19 20:57 EDT
Output:
----------------------------------------------------------
VOLK: Error allocating memory (posix_memalign: 22)
Segmentation fault (core dumped)
<end of output>
Test time =   5.68 sec
----------------------------------------------------------
Test Failed.
"qa_fir_filter" end time: Mar 19 20:57 EDT
"qa_fir_filter" time elapsed: 00:00:05
----------------------------------------------------------
 85/178 Testing: qa_fractional_resampler
85/178 Test: qa_fractional_resampler
Command: "/bin/sh" "/home/fisher/gnuradio/build/gr-filter/python/filter/qa_fractional_resampler_test.sh"
Directory: /home/fisher/gnuradio/build/gr-filter/python/filter
"qa_fractional_resampler" start time: Mar 19 20:57 EDT
Output:
----------------------------------------------------------
VOLK: Error allocating memory (posix_memalign: 22)
Segmentation fault (core dumped)
<end of output>
Test time =   3.76 sec
----------------------------------------------------------
Test Failed.
"qa_fractional_resampler" end time: Mar 19 20:57 EDT
"qa_fractional_resampler" time elapsed: 00:00:03
----------------------------------------------------------


From: "Tom Rondeau" <address@hidden>
To: address@hidden
Cc: "GNURadio Discussion List" <address@hidden>
Sent: Wednesday, March 19, 2014 12:02:50 PM
Subject: Re: [Discuss-gnuradio] (de)modulation problems gnuradio 3.7.3...also GRC FFT missing axis labels

On Mon, Mar 17, 2014 at 11:49 PM,  <address@hidden> wrote:
> I successfully? installed gnuradio 3.7.3 from source on Ubuntu 12.04 using
> the gnuradio-build script, but am running into problems demodulating
> anything from a R820T based SDR.  GRC runs fine, but when I attempt to
> execute any blocks that include an AM, NFM, or WBFM demodulator I get a
> VOLK:Error allocating memory error.  I also noticed that if I just pipe the
> RTL-SDR source to a GUI FFT Sink (either QT or WX) there are no axis labels
> on the graphs....
>
> Attempting to receive WBFM using rtl_fm (per the examples on the rtl-sdr
> OsmoSDR website) produce only static.  It's not a signal strength issue per
> se as another radio can pick up  the station, and the SDR hardware is
> functional since I can receive WBFM with it normally via gqrx on a different
> machine.
>
> I'm wondering if there's a fundamental problem somewhere that's preventing
> demod from happening.  Any troubleshooting suggestions would be appreciated.
> Regards,
> R

Yes, these all sound like very low-level issues with your installation
or machine. You told us the OS you are using, but not the platform
(e.g., processor).

In the build directory of GNU Radio, you can run 'ctest' to see what
passes and what fails there. That might help clue us in. Also, you
should run volk_profile and make sure that completes without error
(that will take some time to complete).

Tom

Attachment: LastTestsFailed.log
Description: Text Data


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