MATLAB: Do I see the error “lm_TMW12.vd1: system error code: No such file or directory” in the logfile

MATLAB

I see the following error in my logfile:

14:55:13 (MLM) lm_TMW12.vd1: execv failed: /var/tmp/lm_TMW12.vd1 lm_TMW12.vd1 ns.technion.ac.il 1 4 7 6

14:55:13 (MLM) lm_TMW12.vd1: system error code: No such file or directory

14:55:14 (MLM) The vendor daemon did not receive a response

14:55:14 (MLM) from a child server. Assuming the child died.

14:55:14 (MLM) SIGCHLD received. Killing child servers

14:55:14 (MLM) Removing clients of children14:55:14 (MLM) Done child cleanup

14:55:14 (MLM) lm_TMW12.vd1: execv failed: /var/tmp/lm_TMW12.vd1 lm_TMW12.vd1

ns.technion.ac.il 1 4 7 6

14:55:14 (MLM) lm_TMW12.vd1: system error code: No such file or directory

14:55:15 (MLM) The vendor daemon did not receive a response

14:55:15 (MLM) from a child server. Assuming the child died.

14:55:15 (MLM) Child server failed to respond 5 times, exiting …

14:55:15 (MLM) SIGCHLD received. Killing child servers

14:55:15 (MLM) Removing clients of children14:55:15 (MLM) Done child cleanup

14:55:15 (MLM) IN: "MATLAB" bnehud@ahissar-pc12 (SHUTDOWN)

14:55:15 (MLM) IN: "MATLAB" ervin@max (SHUTDOWN)

Also, my License Manager failed suddenly and I can't get it to start back up.

Best Answer

This error in your Network License Manager logfile indicates the the files in /var/tmp somehow got deleted. The /var/tmp directory contains logfiles as well as actual binaries used by the license manager.

You should restart your Network License Manager using these instructions:

1. Bring down the network license manager using the $MATLAB/etc/lmdown command (where $MATLAB is the root MATLAB directory)

2. cd into the /var/tmp directory

3. remove any files that begin with lm_TMW5 or lm_TMW12

4. remove the file lockMLM5 or lockMLM12, if it exists

5. run the command ps -ef | grep lm

6. using "kill -9", kill any processes titled lmgrd, mlm, or that begin with lm_TMW5 or lm_TMW12.

7. Restart the license manger using $MATLAB/etc/lmstart

After this, MATLAB should start properly, barring any unforseen problems.

You shouldn't have to restart the License Manager this way every time, only when you see errors like the following in your logfile.

lm_TMW12.vd1: system error code: No such file or directory

Related Solutions

MATLAB: How to monitor the usage of license keys for MATLAB and toolboxes

If you have a network license, there are several ways to monitor license usage.

(1)

To check current license usage, you can use the lmstat function (if the network license manager is running Linux or Mac OS X).

The lmstat function will display the following information:

- Username of person that checked out the license.

- Hostname of computer that the license was checked out on.

- Date and time that license was checked out.

To use the lmstat function, open Terminal and run the following commands.

Linux:

cd $MATLABROOT/etc/glnxa64
./lmutil lmstat -a

Mac:

cd $MATLAB/etc/maci64
./lmutil lmstat -a

Windows:

- Open the folder $MATLABROOT\etc\win64- Run "lmtools.exe".

- Go to the "Server Status" tab.

- Click on "Perform Status Enquiry".

For more information about lmtools, please see the following documentation:

https://www.mathworks.com/help/install/index.html

Alternatively, you can open Command Prompt and run the following commands.

R2011a and later (64-bit):

cd $MATLABROOT\etc\win64
lmutil lmstat -c license.dat -a

R2011a and later (32-bit):

cd $MATLABROOT\etc\win32
lmutil lmstat -c license.dat -a

R2010b and earlier:

cd $MATLABROOT\flexlm
lmutil lmstat -c license.dat -a

By default, $MATLABROOT = C:\Program Files\MATLAB\R20XXx

If you cannot find the above directories, you may not be on the license server. Please refer to following support article:

Is there a way for licenses to be monitored from the client machine instead of the server?

https://www.mathworks.com/matlabcentral/answers/102830-is-there-a-way-for-licenses-to-be-monitored-from-the-client-machine-instead-of-the-server

(2)

For a long-term record of license usage, view the license manager log file.

The network license manager log file will show license check-ins and check-outs.

When someone starts using a product, it checks out a key.

When someone stops using a product, it checks the key back in

Linux:

/var/tmp/lm_TMW.log

Mac:

/var/tmp/lm_TMW.log

Windows:

$MATLABROOT\etc\lmlog.txt

You can also view the log file in lmtools.exe.

- Go to "Config Services" tab.

- Click on "View Log".

The log will be displayed in a pop-up window.

Example of lmlog.txt:

11:40:22 (lmgrd) -----------------------------------------------
11:40:22 (lmgrd)   Please Note:
11:40:22 (lmgrd) 
11:40:22 (lmgrd)   This log is intended for debug purposes only.
11:40:22 (lmgrd)   There are many details in licensing policies
11:40:22 (lmgrd)   that are not reported in the information logged
11:40:22 (lmgrd)   here, so if you use this log file for any kind
11:40:22 (lmgrd)   of usage reporting you will generally produce
11:40:22 (lmgrd)   incorrect results.
11:40:22 (lmgrd) 
11:40:22 (lmgrd) -----------------------------------------------
11:40:22 (lmgrd) 
11:40:22 (lmgrd) 
11:40:22 (lmgrd) Done rereading
11:40:22 (lmgrd) FLEXnet Licensing (v11.4.0.0 build 31341) started on license_server (IBM PC) (4/20/2008)
11:40:22 (lmgrd) Copyright (c) 1988-2006 Acresso Software Inc. All Rights Reserved.
11:40:22 (lmgrd) US Patents 5,390,297 and 5,671,412.
11:40:22 (lmgrd) World Wide Web:  http://www.acresso.com11:40:22 (lmgrd) License file(s): C:\Program Files\MATLAB\R2007a\flexlm\license.dat
11:40:22 (lmgrd) lmgrd tcp-port 27000
11:40:22 (lmgrd) Starting vendor daemons ... 
11:40:22 (lmgrd) Started MLM (pid 10216)
11:40:22 (MLM) Server started on license_server for:MATLAB
11:40:22 (MLM) SIMULINK
11:40:22 (lmgrd) MLM using TCP-port 1253
11:40:24 (MLM) OUT: "MATLAB" jsmith@license_server  
11:51:04 (MLM) IN: "MATLAB" jsmith@license_server   
12:18:07 (MLM) OUT: "MATLAB" jsmith@license_server    
12:20:25 (MLM) OUT: "SIMULINK" jsmith@license_server

This logfile indicates that the user jsmith took out a MATLAB key from the server license_server at 11:40 and that it was returned at 11:51 when he exited MATLAB. Then, at 12:18 he took out a MATLAB key again, and this time, took out a SIMULINK key at 12:20.

(3) Flexera Software offers FlexNet Manager, which is software used for tracking and monitoring license usage.

For more information, please visit Flexera's website:

https://www.flexera.com/products/flexnet-manager.html

MATLAB: Is it possible to show the IP address instead of the computer name in the license manager log file

The ability to record an IP address in the FlexNet license manager debug log file is currently not possible. There are no workarounds at this point.

Best Answer

Related Solutions

MATLAB: How to monitor the usage of license keys for MATLAB and toolboxes

MATLAB: Is it possible to show the IP address instead of the computer name in the license manager log file

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