Installation successful but received "Illegal instruction (core dumped)"

[alexandroskon]

I am installing libcmaes on ubuntu 16.04 and I receive the message "Illegal instruction (core dumped)" when trying to run the tests. I have used the basic option for compilation and install as it was described in the README.md file.

./autogen.sh

echo "#define CMAES_EXPORT" > cmaes_export.h

./configure

make -j4

make install

There was no error during compilation and I have all the dependencies mentioned in README.md. Any ideas? Thanks!

[beniz]

Hi, I can't reproduce, an installation from scratch works fine for me on 16.04. If you'd like to debug further you can try

libtool --mode=execute gdb ./simple_test

and use bt from within gdb to get a backtrace that you can post here.

[alexandroskon]

Thanks for the quick reply. I executed the above command and the backtrace gave me
No stack.
I have attached the output file of valgrind if it's of any help. At the end of the valgrind run I get again
Illegal instruction (core dumped)
It's first time for me encountering this error and I don't really know how to debug it. Any other suggestion? Thanks!

P.S. I am also trying to compile the test code in README.md using
g++ --std=gnu++11 test.cpp -I$CMAES_HOME/src
and I am receiving
$CMAES_HOME/src/eo_matrix.h:26:23: fatal error: Eigen/Dense: No such file or directory.
(Even though I have libeigen3-dev installed in the system (by apt-get))

valout.txt

[lexy16]

Hi, I have a similar issue.
I am installing libcmaes on Windows Subsystem for Linux (Ubuntu 18.04 LTS) and I try to run './test_functions'.
But it's throwing a Illegal instruction (core dumped).

gdb detail is below.

(gdb) run
Starting program: /mnt/c/Users/username/libcmaes/tests/.libs/test_functions
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".

Program received signal SIGILL, Illegal instruction.
libcmaes::CMAParameters<libcmaes::GenoPheno<libcmaes::NoBoundStrategy, libcmaes::NoScalingStrategy> >::initialize_parameters (this=this@entry=0x82856c0 <rastrigin_params>) at cmaparameters.cc:83
83              sq_weights += _weights[i] * _weights[i];

and bt

(gdb) bt
#0  libcmaes::CMAParameters<libcmaes::GenoPheno<libcmaes::NoBoundStrategy, libcmaes::NoScalingStrategy> >::initialize_parameters (this=this@entry=0x82856c0 <rastrigin_params>) at cmaparameters.cc:83
#1  0x00007ffffefbf249 in libcmaes::CMAParameters<libcmaes::GenoPheno<libcmaes::NoBoundStrategy, libcmaes::NoScalingStrategy> >::CMAParameters (this=0x82856c0 <rastrigin_params>, x0=..., sigma=@0x7ffffffde3a8: 5, lambda=<optimized out>,    seed=<optimized out>, gp=...) at cmaparameters.cc:48
#2  0x0000000008041808 in __static_initialization_and_destruction_0 (__initialize_p=1, __priority=65535)    at test-functions.cc:253
#3  _GLOBAL__sub_I__ZN8libcmaeslsERSoRKNS_7contourE () at test-functions.cc:728
#4  0x000000000806a0ed in __libc_csu_init ()
#5  0x00007ffffde41b28 in __libc_start_main (main=0x803f380 <main(int, char**)>, argc=1, argv=0x7ffffffde558,    init=0x806a0a0 <__libc_csu_init>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffffffde548)    at ../csu/libc-start.c:266
#6  0x000000000804272a in _start ()

What happened? Thanks!

[beniz]

See #185

[lexy16]

Thanks for the quick reply.
I have took time to compile with -mfma until now.
And trying to run test_functions.
But it's throwing a Illegal instruction (core dumped).

Does nvm mean Node Version Manager?
Could you give me a little more advice?
Thanks!

[beniz]

nvm means 'nevermind' I think :)

[lexy16]

HI, I noticed that my CPU don't have the FMA.
Is this related to errors?
Thanks!

[beniz]

@lexy16 I've decided to remove the optimization, try pulling the code again and building.

[lexy16]

Thank you very much!! @beniz
I try git and build, and then it worked fine!
FIxed, thanks!
Today is a good day :)