using mkl, error while loading shared libraries: libmkl_intel_lp64.so

Question

I'm almost new in using mkl libraries. So excuse me if it seems silly. I tried to run an example in tutorial [here] with ifort -mkl dgemm_example.f ,then run the executable file. Here is the error:

./a.out: error while loading shared libraries: libmkl_intel_lp64.so: cannot open shared object file: No such file or directory

I also searched for the similar problems but it baffled me more. do you have any idea? dgemm_example.f

How do you initialize the intel compiler? Did you source the compilervars.sh ? — Vladimir F Героям слава, Jan 27 '16 at 22:11
yes I did : It give me : ERROR: Unknown switch ''. Accepted values: ia32, intel64 — Abolfazl, Jan 27 '16 at 22:34
now I get this error after source that: `./a.out: error while loading shared libraries: libiomp5.so: cannot open shared object file: No such file or directory ` — Abolfazl, Jan 27 '16 at 22:38
You must do `source the_file intel64` if you have a 64 bit system (otherwise ia32). — Vladimir F Героям слава, Jan 27 '16 at 22:40
after source like that I have still that `libiomp5.so` error — Abolfazl, Jan 27 '16 at 22:56
If that edit is in fact an answer it should be entered as an answer and not as en edit to the question. I am still puzzled why it didn't work using `compilervars.sh`. — Vladimir F Героям слава, Jan 28 '16 at 14:14
perhaps `source compilervars.sh` is not enough to say `loader` to find shared libraries. — Abolfazl, Jan 28 '16 at 15:34

score 2 · Answer 1 · answered Jan 27 '16 at 22:36

2

You have to set the LD_LIBRARY_PATH environment variable, otherwise the shared library will not be found at run time.

Before running your program, type export LD_LIBRARY_PATH=/path/to/your/library/directory in the (bash) shell in which you want to run your code.

If you are using Ubuntu, you can set this variable automatically by using configuration files in /etc/ld.so.conf.d/, see Ubuntu help. Similar mechanisms are available for other distributions.

answered Jan 27 '16 at 22:36

Figaro

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That is normally done automatically by the configuration script I referenced. – Vladimir F Героям слава Jan 27 '16 at 22:42
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I have already copied this in my .bashrc file: `export LD_LIBRARY_PATH=/opt/intel/composer_xe_2013.2.146/mkl/lib/intel64/:$LD_LIBRARY_PATH `. It's linux Mint – Abolfazl Jan 27 '16 at 22:45
Yes, sorry Vladimir, I hadn't read your comment when I typed the answer. – Figaro Jan 27 '16 at 22:45
No problem, just saying that the problem is more to get the correct directories, than the fact they need to be in LD_LIBRARY_PATH – Vladimir F Героям слава Jan 28 '16 at 08:42

score 1 · Answer 2 · edited May 16 '17 at 05:05

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I'm using CentOS on our workstations. Adding following lines to bashrc worked for me.

export PATH="$PATH:/opt/intel/bin"

export LD_LIBRARY_PATH="$PATH:opt/intel/mkl/lib/intel64_lin/"

edited May 16 '17 at 05:05

francescalus

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answered May 16 '17 at 04:51

user3800173

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score 0 · Answer 3 · answered Jan 28 '16 at 15:36

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I copied the address of libiomp5 in /etc/ld.so.conf.d/icc.conf and used sudo ldconfig.

There is another way that every time we should use this flag: -Wl,-rpath=/opt/intel/directory/to/library/directory

and it worked.

answered Jan 28 '16 at 15:36

Abolfazl

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score 0 · Answer 4 · answered Jan 25 '18 at 07:37

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I'm using CentOS and intel compiler. Type
locate compilervars.sh

Go to your '.bashrc' file and add

source /adress you got from locate command/compilervars.sh intel64

Then in terminal type
source ~/.bashrc

It will fix the error.

answered Jan 25 '18 at 07:37

Chemist

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And if there's no `locate` installed, or more than one `compilervars.sh` is available, or the user isn't in a bash shell? – francescalus Jan 25 '18 at 08:11
You can install `locate` from repository I guess. I don't know how to deal with multiple `compilervars.sh` problem. Maybe he/she can try using all the addresses available or choose intuitively. I am new to all these stuff, but I am trying to suggest what I did to fix this error. Hope it helps. – Chemist Mar 06 '18 at 05:07
How do you go to your .bashrc file? where is it? – June Wang Aug 28 '20 at 05:34

score 0 · Answer 5 · answered Jan 16 '21 at 02:22

0

In my case, I tried

pip install mkl

and export the path.

I works.

answered Jan 16 '21 at 02:22

one

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using mkl, error while loading shared libraries: libmkl_intel_lp64.so

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