MATLAB: Does MATLAB R2009b segmentation fault on startup on Solaris when LM_LICENSE_FILE is set

MATLAB

I have the LM_LICENSE_FILE variable set on my my Solaris machine. When I try to start MATLAB with this variable set, I get a segmentation fault. If I unset the variable, MATLAB works. How can I use LM_LICENSE_FILE with MATLAB R2009b on Solaris?

Best Answer

This issue may occur if you have LM_LICENSE_FILE set on the computer and the variable has incorrect syntax. For example, if you have several license servers, these should be separated by colons, not commas. For example:

LM_LICENSE_FILE=27000@server1:27000@server2

If you have redundant license servers, these should be separated by commas. For example:

LM_LICENSE_FILE=27000@redundant1,27000@redundant2,27000@redundant3

This can also happen if you have other special characters set in this variable. Once the variable has the correct syntax, MATLAB should start normally.

Related Solutions

MATLAB: Does MATLAB take so long to start if I am disconnected from the network

This issue typically occurs if MATLAB is setup to checkout additional tools from a network license or if there is an environment variable (LM_LICENSE_FILE) set for another program. If there is an LM_LICENSE_FILE variable set on the machine, this variable will tell MATLAB and all other FLEXnet applications where to obtain licenses. Typically LM_LICENSE_FILE is set to point to a license server. For either scenario, if MATLAB is setup to check out additional toolboxes from a network license server, and there is no connection, this will delay the time it takes to start MATLAB when disconnected.

If MATLAB is set to a license server for additional toolboxes, the only workaround for the slow startup is to remove the license file that points MATLAB to the license server, or to point MATLAB to the standalone license file only. For more information about this process, see the Related Solution "Why does MATLAB get stuck in the "Initializing" state or take a long time to start?"

If there is an LM_LICENSE_FILE variable set to point to a license server and MATLAB does not use this license server, you can resolve this issue by renaming LM_LICENSE_FILE to the environment variable specific to the product that connects to the license server. Each FLEXnet application looks for LM_LICENSE_FILE as well as a variable that is specific for the vendor of the FLEXnet application. For example, MATLAB uses MLM_LICENSE_FILE. If you rename LM_LICENSE_FILE to the vendor specific variable, MATLAB will ignore the variable and use its own licensing. Refer to the vendor of your other FLEXnet applications to find out the appropriate variable for your other product.

MATLAB: Is the MATLAB session unable to TIMEOUT properly when checking a license out from redundant license servers

This issue may occur if MATLAB points to the license servers via a license file. Instead, use the LM_LICENSE_FILE or MLM_LICENSE_FILE environment variable to point to the license servers. To do so you will need the names and port numbers of the license servers. These can be retrieved from the license file on the license server machines. In general this license file will be:

 $MATLAB/etc ($MATLAB\flexlm for releases prior to R2010b on Windows)

Where $MATLAB is the installation folder for MATLAB on the servers. The name and port numbers of the license servers will be in the lines that start with the word SERVER. For example:

SERVER server1 001122334455 27000
SERVER server2 000033445511 27000
SERVER server3 002244550000 27000

The name is the 2nd value and the port is the 4th. Thus for this example, you will set the MLM_LICENSE_FILE variable to be:

27000@server1,27000@server2,27000@server3

Once the variable has been set, MATLAB should read the TIMEOUT setting from the license servers and should TIMEOUT at the appropriate interval.

Best Answer

Related Solutions

MATLAB: Does MATLAB take so long to start if I am disconnected from the network

MATLAB: Is the MATLAB session unable to TIMEOUT properly when checking a license out from redundant license servers

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