PADS consumes too many floating licenses

Document created by andrew_audova on Jan 5, 2012Last modified by andrew_audova on Jan 10, 2012
Version 3Show Document
  • View in full screen mode
Note: There is new functionality coming with PADS9.4 to where you can control the consumption of PADS Suite licenses from within PADS Layout, Logic, and Router, or at invocation.



There may be times when an application consumes an additional base product license instead of reusing an existing license.


For example:


Opening PADS Layout followed by PADS Logic consumes a padsls_c and a dxdesigner040_c license. The padsls_c (PADS composite\suite) license will run both PADS Layout and Logic (or DxDesigner) so the expected outcome is only the padsls_c being consumed.


Another example is where PADS Layout consumes both a padsls_c (or padses_c) and a pwrshell license (and many other licenses beginning with "pwr").


One technique to avoid this problem is to use the FlexNet Options  file, on the license server. The Options file allows for the license  server administrator to restrict access by USER name, GROUP name  (defined list of USER names), or even PROJECT name. In cases where the  end user needs to switch between different sets of licenses based on the  project they are working on, the PROJECT setting is more versatile as  it does not require that the license server administrator make any changes to the Options file after the initial setup. For this reason the  steps following will use the PROJECT setting, however, these can be  substituted by USER or GROUP if necessary.  Refer to the Options file chapter in the FLEXnet Manual for more details.


The first step is to determine all the base product licenses in the  license file in order to assign to different PROJECT names (end users  will refer to these via the LM_PROJECT environment variable, later in  the instructions). Base license names can usually be determined by  monitoring the lmgrd log file on the license server.

NOTE: The  reason non-base/option licenses are excluded from these steps is  because they may need to be shared among different PROJECT names. For  example: PADS Layout has an "installed options" area in the help menu  where an end user can control these licensed options.

Here are some examples of base licenses for some of the PADS and Expedition Flow products:

PADS Layout -- pwrshell and any feature starting with "pads" and ending in "_c". For example: padsls_c or padses_c
PADS Router -- blzshell and any feature starting with "pads" and ending in "_c". For example: padsls_c or padses_c
PADS Logic -- viewdraw or dxdesigner040_c
DxDesigner -- viewdraw or dxdesigner040_c
Expedition -- wgpcb
Hyperlynx -- hyplsw or hypbsw
CAMCAD -- cpbase or cgbase


Create a file called "mgcld.opt" on the license server, in the same directory as the license file.

NOTE: An alternative is to provide a different name and/or location of  the Options file and point to it using the 4th field in the DAEMON line  in the license file on the server. For example, if the file is saved to  the "c:\MentorGraphics\FLEXnet\Options.txt" location then the DAEMON  line would read:


DAEMON mgcld c:\MentorGraphics\licensing\mgcld.exe c:\MentorGraphics\FLEXnet\Options.txt


The contents of the Options file marries each of these base  licenses to a specific PROJECT name. Add an INCLUDE sentence for each  base product license, and assign a unique and descriptive PROJECT name.

See the following example based on the aforementioned PADS consumption issues. Project names are schematic_standalone for the base dxdesigner040_c license (runs PADS Logic or DxDesigner), and pads_suite for the padsls_c license (runs PADS Layout, PADS Logic, and DxDesigner).


INCLUDE dxdesigner040_c PROJECT schematic_standalone
INCLUDE padsls_c PROJECT pads_suite
INCLUDE pwrshell PROJECT layout_standalone



Restart the license manager on the license server.

To confirm the change is in place you will see a statement similar to the below one, near the top of the lmgrd log file:


14:55:27 (mgcld) Using options file: "C:\MentorGraphics\FLEXnet\Options.txt"



Create a script on the end  user machine(s) for each PROJECT. The script will set the LM_PROJECT  environment variable accordingly and run the appropriate executable to  launch the program

The following examples provide batch scripts for Windows that when run, result in only the padsls_c license being consumed when PADS Layout, Logic, or DxDesigner is  launched, as an INCLUDE statement for this license was created in the  Options file (PROJECT name pads_suite).

PADS Logic using PADS Suite license (example script name: PADS_Logic_Suite.bat):


set LM_PROJECT=pads_suite
start %SDD_HOME%\Programs\powerlogic.exe




DxDesigner using PADS Suite license (example script name: DxDesigner_Suite.bat):


set LM_PROJECT=pads_suite
start %SDD_HOME%\wv\win32\bin\viewdraw.exe




PADS Layout using PADS Suite license (example script name: PADS_Layout_Suite.bat):


set LM_PROJECT=pads_suite
start %SDD_HOME%\Programs\powerpcb.exe




The following examples provide batch scripts that when run, result in only the standalone licenses being consumed, which is dxdesigner040_c for PADS Logic or DxDesigner, and pwrshell (and  other licenses beginning in "pwr") for PADS Layout. This is because an  INCLUDE statement for these licenses was created in the Options file  (PROJECT name schematic_standalone for PADS Layout or DxDesigner, and layout_standalone for PADS Layout).




PADS Logic using standalone license (example script name: PADS_Logic_Standalone.bat):


set LM_PROJECT=schematic_standalone
start %SDD_HOME%\Programs\powerlogic.exe




DxDesigner using standalone license


set LM_PROJECT=layout_standalone
start %SDD_HOME%\Programs\powerpcb.exe



- The %SDD_HOME% is an environment variable, defined on the system where PADS is installed. It keeps track of the currently configured version so you don't have to keep a version of the script for each PADS release that is installed. A full path may be substituted for the %SDD_HOME% but the path to the executable will need to be changed after switching PADS releases. Example full path: "C:\MentorGraphics\9.3PADS\SDD_HOME\Programs\powerlogic.exe".

- To determine the path to a program/executable right click on the Shortcut and select "Properties". The full path will be displayed in the "Target:" field.


Changes are complete!

To ensure optimal license consumption end users will need to run the appropriate script associated with the license they need to use.

For example:

If a PADS end user needs to run both PADS Layout and Logic and wants to consume a padsls_c (PADS Suite) license, run the "PADS_Logic_Suite.bat" script for PADS Logic, and "PADS_Layout_Suite.bat" for PADS Layout.

However, for running PADS Logic only and consuming the dxdesigner040_c license (ignore the PADS Suite licenses), run the "PADS_Logic_Standalone.bat" script.