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AR# 32595

11.1 CORE Generator - Eval license is used instead of Full license for IP core


I have a full license for an IP core, but when I attempt to generate the core, CORE Generator only finds an evaluation license.


The IP Core license manager (xlicmgr) should search for valid IP license types in the following preference order:

  1. Source
  2. Bought (Full)
  3. Hardware_evaluation
  4. Design_linking (Simulation only)

To find license files, it uses the license search order:

  1. All of the places listed by the environment variable XILINXD_LICENSE_FILE, if set.
  2. All of the places listed by the environment variable LM_LICENSE_FILE, if set.
  3. The location cached for XILINXD_LICENSE_FILE in the registry ($HOME/.flexlmrc for Linux)
  4. %HOMEDRIVE%\.Xilinx\*.lic ($HOME/.Xilinx/*.lic for Linux)
  5. %HOMEDRIVE%\.Xilinx\Coregen\CoreLicenses\*.lic ($HOME/.Xilinx/Coregen/CoreLicenses/*.lic for Linux)
  6. %XILINX_EDK%\data\core_licenses ($XILINX_EDK/data/core_licenses for Linux)
  7. %XILINX%\coregen\core_licenses ($XILINX/coregen/core_licenses for Linux)

Within each of the directory locations, xlicmgr searches for a license feature in the order it appears in a license file.

License files within a directory are searched in alphabetic order.

In 11.1, xlicmgr uses the correct search order to find license files.
However, in ISE 11.1, it does not properly use the license type precedence rules.
Instead it picks up the first valid license found on the search path.
This can lead to the incorrect license being picked up under the following scenarios.

  • If there are two licenses for the same feature, but different types are found in the same directory and the name of the lower preference license (for example, Eval) appears alphabetically before the higher preference license (for example, Full).
  • If An IP Core is first generated with a lower preference license placing the license in the cache.
    Later, the higher preference license is placed in one of the default license locations (search order 4 through 7 above).
    It will check out licenses found in the cache (regardless of type) before searching the license default directories (for example C:\.Xilinx\Xilinx.lic).
  • If a lower preference license is located in a file or directory with an earlier search order than the higher preference license.

To work around this issue, refresh the license cache when new licenses have been installed to ensure that these are picked up first.

You can also do the following:

  • Use the XILINXD_LICENSE_FILE environment variable to point to the desired license file or directory first in the search order.
  • Delete or rename unwanted license files in the search directories.
    Changing a file extension to anything other than ".lic" should prevent the file content from being searched by xlicmgr.
  • Reset the license cache.
    Run "xlicmgr reset" to reset from a command line, or select the "Reset FLEX cache" button from the View License Status page of the IP Core you want to generate.

For a detailed list of where xlicmgr is searching for a license feature, use the status and verbose option for xlicmgr on the command line.

For example, run the command below to obtain a detailed analysis of where xlicmgr is searching for the xaui_v7 license feature.

xlicmgr status -c xaui_v7 -v

This issue is resolved in ISE 11.2.
AR# 32595
Date Created 04/23/2009
Last Updated 12/23/2014
Status Archive
Type General Article
  • ISE Design Suite - 11.1