Hi David,
I think we can all agree that the community starting to run at the
mention of Matlab is not a good thing - I think there might be
frustration behind this flight instinct, so let's try to make this a
success story.
I concur with the pretty detailed reply from mathworks; the reason is
likely to be the binary/abi mismatch between the boost GNU Radio/your
native runtime linker uses and the one that the Matlab library needs.
Now, you should be able to specify the boost that cmake uses when
configuring the build process:
cmake -DBOOST_INCLUDEDIR=<matlab-shipped boost includes>
-DBOOST_LIBRARY_DIR=<matlab-shipped library dir> ..
Also make sure to specify export LD_LIBRARY_DIR containing the same
matlab library dir; otherwise, at runtime your system's boost will get
linked in, and that will still result in segfaults.
Maybe there is also the option to statically link the Matlab library
before loading it from GNU Radio, instead of doing it the other way
around (which is option 2). To me, that sounds more logically sound,
since it's Matlab that introduces library dependencies that are
incompatible with your system libraries, because otherwise you might run
into the same problem for other libraries that both Mathworks code and
GNU Radio use and Mathworks ships their own version with. However, I
don't know if that would even be possible, as I don't have Matlab around
to test it.
All in all, I also like option 3 from Mathwork's reply, though I don't
think the .mat method would work well for streaming like GNU Radio does;
you should be able to just open a file (fopen) and read from it (fread)
in a loop, so that you can get what a file source in GNU Radio writes to
a FIFO; basically, as Matlab pseudocode:
infile = fopen("/tmp/fifo_in");
outfile = fopen("/tmp/fifo_out", "w");
while 1
datain = fread(infile, 1000, "float32");
dataout = do_some_processing(datain);
fwrite(outfile, dataout, "float32");
end
you'd have to
mkfifo /tmp/fifo_in /tmp/fifo_out
first and then use file sink/source to write/read to/from these.
Of course, a socket- or IPC-based solution might be cleaner, but I don't
know much popular matlab tools that make it easy to write "real-world
compatible" Matlab code (I think that lack of knowledge of high-quality
well-known libraries might be what leads people to run away as soon as
you mention Matlab).
Best regards,
Marcus
Am 17. August 2015 12:27:25 MESZ, schrieb David Halls
<[email protected]>:
Hi Marcus,
I am calling MATLAB compiled code from within GNURadio C++ blocks.
MATLAB compiled code uses a specific version of Boost, and they are
still using 1.49, even with their latest release. I get a the trace
below when I try to run the MATLAB code on newer
GNURadio/Ubuntu/Boost though it works fine on my old
(ancient) GNURadio/Ubuntu/Boost build where the Boost versions
match. (Also included is MathWorks take on it).
I was reticent to give all the details because previous MATLAB
questions have left the community running for the hills, saying I
should write everything directly in C++ etc, but there are lots of
reasons we can't do this, for now!
Thanks,
David
(python2:16446): IBUS-WARNING **: The owner of
/home/gnuradio/.config/ibus/bus is not root!
Using Volk machine: avx_64_mmx_orc
Attempting to initialise the MCR application...
Attempting to initialise the libdla application...
------------------------------------------------------------------------
Segmentation violation detected at Tue Jun 23 15:25:36 2015
------------------------------------------------------------------------
Configuration:
Crash Decoding : Disabled
Default Encoding : UTF-8
GNU C Library : 2.19 stable
MATLAB Architecture: glnxa64
MATLAB Root : /usr/local/MATLAB/MATLAB_Compiler_Runtime/v81
MATLAB Version : 8.1.0.604 (R2013a)
Operating System : Linux 3.13.0-32-generic #57-Ubuntu SMP Tue
Jul 15 03:51:08 UTC 2014 x86_64
Processor ID : x86 Family 6 Model 60 Stepping 3, GenuineIntel
Fault Count: 1
Abnormal termination:
Segmentation violation
Register State (from fault):
RAX = 00000000049dd7f0 RBX = 00000000049dd820
RCX = 0000000000000002 RDX = 0000000000000000
RSP = 00007fff0de311e0 RBP = 0000000000000001
RSI = 0000000000000000 RDI = 0000000000000001
R8 = 00000000049dd820 R9 = 0000000000000000
R10 = 000000000000069c R11 = a3d70a3d70a3d70b
R12 = 00000000ffffffff R13 = 00007fff0de31450
R14 = 000000000494e448 R15 = 000000000494e2f8
RIP = 00007f1ee264a414 EFL = 0000000000010202
CS = 0033 FS = 0000 GS = 0000
Stack Trace (from fault):
[ 0] 0x00007f1ee264a414
/lib/x86_64-linux-gnu/libpthread.so.0+00042004
pthread_mutex_lock+00000004
[ 1] 0x00007f1ede8b37fa
/usr/lib/x86_64-linux-gnu/libboost_thread.so.1.54.0+00047098
_ZN5boost6thread9interruptEv+00000074
[ 2] 0x00007f1e9cec7b25
/usr/local/MATLAB/MATLAB_Compiler_Runtime/v81/bin/glnxa64/libmwdservices.so+00146213
[ 3] 0x00007f1e9ced7c76
/usr/local/MATLAB/MATLAB_Compiler_Runtime/v81/bin/glnxa64/libmwdservices.so+00212086
_ZN10dsLockFileD1Ev+00000038
[ 4] 0x00007f1e9cece93a
/usr/local/MATLAB/MATLAB_Compiler_Runtime/v81/bin/glnxa64/libmwdservices.so+00174394
_ZN5boost6detail17sp_counted_impl_pI10dsLockFileE7disposeEv+00000026
[ 5] 0x00007f1ebc46e379
/usr/local/MATLAB/MATLAB_Compiler_Runtime/v81/bin/glnxa64/libmat.so+00091001
_ZN5boost6detail12shared_countD1Ev+00000073
[ 6] 0x00007f1e9ced3d40
/usr/local/MATLAB/MATLAB_Compiler_Runtime/v81/bin/glnxa64/libmwdservices.so+00195904
_ZN24dsDirectoryExclusiveLock7releaseERKN5boost10posix_time13time_durationE+00000176
[ 7] 0x00007f1e9ced3d9f
/usr/local/MATLAB/MATLAB_Compiler_Runtime/v81/bin/glnxa64/libmwdservices.so+00195999
_ZN24dsDirectoryExclusiveLock7releaseEv+00000031
[ 8] 0x00007f1e9cecdf8c
/usr/local/MATLAB/MATLAB_Compiler_Runtime/v81/bin/glnxa64/libmwdservices.so+00171916
_ZN24dsDirectoryReadWriteLock8ReadLock4Impl7acquireERKN5boost10posix_time13time_durationEb+00001276
[ 9] 0x00007f1e9cece3e6
/usr/local/MATLAB/MATLAB_Compiler_Runtime/v81/bin/glnxa64/libmwdservices.so+00173030
_ZN24dsDirectoryReadWriteLock8ReadLock7acquireEb+00000038
[ 10] 0x00007f1e8d45c602
/usr/local/MATLAB/MATLAB_Compiler_Runtime/v81/bin/glnxa64/libmwmclmcr.so+01230338
[ 11] 0x00007f1e8d3ee718
/usr/local/MATLAB/MATLAB_Compiler_Runtime/v81/bin/glnxa64/libmwmclmcr.so+00780056
[ 12] 0x00007f1e8d3ef2d6
/usr/local/MATLAB/MATLAB_Compiler_Runtime/v81/bin/glnxa64/libmwmclmcr.so+00783062
_ZN5boost6detail8function21function_obj_invoker0INS_3_bi6bind_tINS_10shared_ptrI21mclExtractedComponentEEPFS7_N6mclmcr12CtfExtractorEENS3_5list1INS3_5valueIS9_EEEEEES7_E6invokeERNS1_15function_bufferE+00000054
[ 13] 0x00007f1e8d42df95
/usr/local/MATLAB/MATLAB_Compiler_Runtime/v81/bin/glnxa64/libmwmclmcr.so+01040277
_Z30mclInitializeComponentInstanceRKN5boost8functionIFiPKcEEES6_NS_9function0INS_10shared_ptrI21mclExtractedComponentEEEE+00000389
[ 14] 0x00007f1e8d3f9c0d
/usr/local/MATLAB/MATLAB_Compiler_Runtime/v81/bin/glnxa64/libmwmclmcr.so+00826381
mclInitializeComponentInstanceEmbedded+00000573
[ 15] 0x00007f1ec645c763
/usr/local/MATLAB/MATLAB_Compiler_Runtime/v81/runtime/glnxa64/libmwmclmcrrt.so.8.1+00124771
mclInitializeComponentInstanceEmbedded_proxy+00000067
[ 16] 0x00007f1ec5c2c1eb
/home/gnuradio/gnuradio_trlcode/gr-trl/lib/libdla.so+00008683
libdlaInitializeWithHandlers+00000107
[ 17] 0x00007f1ec5c2c22b
/home/gnuradio/gnuradio_trlcode/gr-trl/lib/libdla.so+00008747
libdlaInitialize+00000023
[ 18] 0x00007f1ec6c3393d
/usr/local/lib/libgnuradio-trl.so+00493885
[ 19] 0x00007f1ec6c33e08
/usr/local/lib/libgnuradio-trl.so+00495112
_ZN2gr3trl5dla_r4makeEiiibbfb+00000104
[ 20] 0x00007f1ec70bb740
/usr/local/lib/python2.7/dist-packages/trl/_trl_swig.so+02164544
[ 21] 0x000000000052c6d5
/usr/bin/python2+01230549 PyEval_EvalFrameEx+00001061
[ 22] 0x000000000055c594
/usr/bin/python2+01426836 PyEval_EvalCodeEx+00000676
[ 23] 0x000000000052ca8d
/usr/bin/python2+01231501 PyEval_EvalFrameEx+00002013
[ 24] 0x000000000056d0aa
/usr/bin/python2+01495210
[ 25] 0x00000000004d9854
/usr/bin/python2+00890964
[ 26] 0x00000000004d8379
/usr/bin/python2+00885625
[ 27] 0x00000000004f5d0b
/usr/bin/python2+01006859
[ 28] 0x000000000052cc20
/usr/bin/python2+01231904 PyEval_EvalFrameEx+00002416
[ 29] 0x000000000055c594
/usr/bin/python2+01426836 PyEval_EvalCodeEx+00000676
[ 30] 0x00000000005b7392
/usr/bin/python2+01799058 PyEval_EvalCode+00000050
[ 31] 0x0000000000469663
/usr/bin/python2+00431715
[ 32] 0x00000000004699e3
/usr/bin/python2+00432611 PyRun_FileExFlags+00000146
[ 33] 0x0000000000469f1c
/usr/bin/python2+00433948 PyRun_SimpleFileExFlags+00000750
[ 34] 0x000000000046ab81
/usr/bin/python2+00437121 Py_Main+00002910
[ 35] 0x00007f1ee229cec5
/lib/x86_64-linux-gnu/libc.so.6+00138949 __libc_start_main+00000245
[ 36] 0x000000000057497e
/usr/bin/python2+01526142
If this problem is reproducible, please submit a Service Request via:
http://www.mathworks.com/support/contact_us/
A technical support engineer might contact you with further information.
Thank you for your help.** This crash report has been saved to disk
as /home/gnuradio/matlab_crash_dump.16446-1 **
MATLAB is exiting because of fatal error
>>> Done
"The stack trace strongly suggests that the crash is related to a
Boost library version conflict. MATLAB R2013a/MCR v8.1 includes and
depends on Boost 1.49 libraries. In the stack trace we see that in
practice your system's Boost 1.54 libraries are being accessed however.
These things may occur if you load a MATLAB Compiler Shared Library
into an application which is already making use of this system Boost
library.
There are no quick/easy workarounds for such issues other than:
1. Making sure that all components involved make use of the same
Boost library versions, or
2. Making sure that the components which require Boost statically
link against the Boost version which they prefer, or
3. Separating the different components which require Boost into
separate applications.
In further detail:
Option 1: It looks like you are making use of GNU Radio from Python,
I do believe that GNU Radio depends on Boost. You may be able to
(re)compile GNU Radio to make it use Boost 1.49 and where you even
specifically link it to the Boost libraries shipped with the MCR
(these can be found in the bin/glnxa64 directory).
Option 2: If GNU Radio specifically requires a different Boost
version you may be able to recompile it and statically link it
against this version.
Option 3: Instead of compiling your MATLAB Code into a Shared
Library, compile it into a standalone application which you can
launch from your Python process. This separate standalone should be
able to use its own Boost libraries without problems then. There are
Python libraries which can read and write MAT-files so you can
relatively efficiently pass in- and outputs from and to that
standalone application through MAT-files."
------------------------------------------------------------------------
*From:*
[email protected]
<[email protected]> on
behalf of Marcus Müller <[email protected]>
*Sent:* 14 August 2015 17:59
*To:* [email protected]
*Subject:* Re: [Discuss-gnuradio] Building GNU Radio with previous
Boost version
Hi David,
boost > 1.35 should work, but 1.49 is, if I remember correctly, an
especially buggy version, especially in Ubuntu.
I guess you wouldn't ask if there wasn't a problem, so maybe you
want to elaborate?
Best regards,
Marcus
On 08/14/2015 06:00 PM, David Halls wrote:
>
> Hi guys,
>
>
> For a number of complicated reasons I would like to build GNU
> Radio with an older version of Boost. Specifically 1.49.
>
>
> Thanks,
>
>
> David
>
>
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