Originally posted by: chens

I am a cplex new user. My Cplex program complains that "CPLEX Error 32201: ILM Error 16: CPLEX license file not found or unreadable."

I am using Linux system, and I put access.ilm in "~/Research/Cplex/", I also added "export ILOG_LICENSE_FILE=~/Research/Cplex/access.ilm" to my bashrc file. When I type echo $ILOG_LICENSE_FILE, it correctly finds ~/Research/Cplex/access.ilm. But I don't understand why Cplex can't find the license file.
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Originally posted by: SystemAdmin

Does the problem persist if you instead use

export ILOG_LICENSE_FILE=$HOME/Research/Cplex/access.ilm
Philip Starhill
CPLEX Research Engineer
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Originally posted by: chens

Hi Philip,

I changed the bashrc file into: export ILOG_LICENSE_FILE=/home/siqi/Research/Cplex/access.ilm

and echo $ILOG_LICENSE_FILE returns correctly as: /home/siqi/Research/Cplex/access.ilm

but Cplex still complains about license file not found.

Anything else I am missing?

Thanks
Siqi
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Originally posted by: SystemAdmin

Philip is right. The special character '~' is only understood by the shell and not by CPLEX. If you do

echo $ILOG_LICENSE_FILE

then it should output an absolute path like

/home/yourname/Research/Cplex/access.ilm

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Originally posted by: chens

Hi Daniel,

I changed the bashrc file into: export ILOG_LICENSE_FILE=/home/siqi/Research/Cplex/access.ilm

and echo $ILOG_LICENSE_FILE returns correctly as: /home/siqi/Research/Cplex/access.ilm

but Cplex still complains about license file not found.

Anything else I am missing?

Thanks
Siqi
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Originally posted by: SystemAdmin

Perhaps something went wrong when copying the license file. When you enter

cat $ILOG_LICENSE_FILE

on the command line do you see the contents of the license file displayed on the screen?
Philip Starhill
CPLEX Research Engineer
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Originally posted by: chens

Yes, cat $ILOG_LICENSE_FILE returns the content in access.ilm :(
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Originally posted by: SystemAdmin

That is strange. What is the content of that file?
Does this work:

ILOG_LICENSE_FILE=/home/siqi/Research/Cplex/access.ilm cplex

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Originally posted by: chens

It returns:

ILOG CPLEX 11.010, licensed to XXXXXXX

Welcome to CPLEX Interactive Optimizer 11.0.1
with Simplex, Mixed Integer & Barrier Optimizers
Copyright (c) ILOG 1997-2008
CPLEX is a registered trademark of ILOG

Type 'help' for a list of available commands.
Type 'help' followed by a command name for more
information on commands.

It works, right?
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Originally posted by: SystemAdmin

Yes, it seems like it is working.
So you did something wrong with you .bashrc.

• Do you have

export ILOG_LICENSE_FILE=/home/siqi/Research/Cplex/access.ilm

in that file? You may also write

ILOG_LICENSE_FILE=/home/siqi/Research/Cplex/access.ilm
export ILOG_LICENSE_FILE

The 'export' keyword is important.

• Did you start a new terminal or a new shell after changing .bashrc?
• Do you use bash at all? What does

echo $SHELL

print?
If your answer to all these questions is 'yes' then I have no more ideas what might be wrong. Maybe you just have some typo somewhere?
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Originally posted by: SystemAdmin

> chens wrote:
> I am a cplex new user. My Cplex program complains that "CPLEX Error 32201: ILM Error 16: CPLEX license file not found or unreadable."

You are referring to a program you wrote that uses CPLEX libraries? How are you running it (from a shell, from an IDE, as a Java applet, ...)?

/Paul

Mathematicians are like Frenchmen: whenever you say something to them, they translate it into their own language, and at once it is something entirely different. (Goethe)
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Originally posted by: chens

I just noticed something interesting.

If I run the executable in terminal, the license is actually working; but if I switch back to KDevelop (an IDE in Linux), and run the program within KDevelop, then the license file can't be found. I guess this shows that the license file is correct and Cplex can indeed find it. But for some reason, it is not loaded in KDevelop... Very weird.....
-Siqi
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Originally posted by: SystemAdmin

> chens wrote:
>
> If I run the executable in terminal, the license is actually working; but if I switch back to KDevelop (an IDE in Linux), and run the program within KDevelop, then the license file can't be found. I guess this shows that the license file is correct and Cplex can indeed find it. But for some reason, it is not loaded in KDevelop... Very weird.....

I'm not familiar with KDevelop. If it has an option to set run-time environment variables, try putting the license file export command there. It may be that KDevelop does not use the environment variables set in your bash profile.

/Paul

Mathematicians are like Frenchmen: whenever you say something to them, they translate it into their own language, and at once it is something entirely different. (Goethe)
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Originally posted by: SystemAdmin

Aha, this is an interesting detail you did not tell us about before :-)
I guess you are starting kdevelop via some kind of button on your desktop? To make things work in kdevelop do one of the following

• Start kdevelop from a terminal. This should propagate the ILOG_LICENSE_FILE to kdevelop.
• In kdevelop use Project->Project Options->Run Options and add the ILOG_LICENSE_FILE environment variable to the "Environment Variables" list.
• Applications started from a menu or button usually don't source ~/.bashrc. So you have to define the environment variable in another place that is also honored by programs started from menus or buttons. I am not an expert in KDE but I hear that putting the value into /env/environment may do the trick (restart of KDE may be required). If it does not work you may have to search the web :-(

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Originally posted by: chens

You are awesome!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1
I added the system variable to KDevelop and it works!!!!

Thank you so much,
-Siqi
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Originally posted by: RahulPandya

Sir, I am also facing the same error. Please let me know where do I download the license file. Would you please send me a link. Thanks Rahul.
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