ERROR

When attempting to use more than four processing cores, one of the following, or a similar error, occurs:

	Unable to spawn node: license not available. ANSYS LICENSE MANAGER ERROR:Not enough HPC Parallel licenses 6/4 Hit return to exit.
	ANSYS LICENSE MANAGER ERROR: Not enough HPC Paralell licenses 6/4 *** ERROR - Insufficient HPC licenses available.

Description/Cause

Ansys includes access to four computing cores for most of their application solvers.  To access additional cores, high performance computing licensing is required.  If this licensing is unavailable, or you attempt to use more cores than enabled by your licensing, you will receive an error.

This licensing is provided by either:

• The older, Ansys HPC model, where sets of individual cores are allocated to clients on a per core basis
• The newer, Ansys HPC Pack model, where each pack checked out to a client enables up to a certain number of cores for the client
  

Solution

Verifying HPC Licensing is Available

You'll need to check if the license increments "anshpc" or "anshpc_pack" exist on the license server.  Depending on if you have access to the license server or not, and the client version you are running, there are a handful of ways to accomplish that, which are outlined in this article, HOW TO - View Current License Usage/Status‍ 

Modifying HPC License Preferences