18.4.2. Memory Tuning the ABAQUS Solver

Memory settings for the ABAQUS solver are specified using the Manually specify Mechanical APDL solver memory settings option. The default value for the Workspace setting is 512 MB, and the default value for Database is 256 MB. The amount of memory allocated to the ABAQUS solver is determined by the following rules:

  • The value of the Workspace option is the total memory available to the solve process.

  • The Database memory cannot exceed 35% of the total system memory of the node. If it exceeds this value, it is reset to 35% of the total system memory.

  • If the processor architecture is 32-bit, the total memory available to the solve process cannot exceed 1 GB.

Workbench tunes ABAQUS memory by changing keywords and values in the ABAQUS_v6.env file in the solve working directory:

  • If the ABAQUS release number is less than 6.8, the keyword pre_memory is set to the Database value and the keyword standard_memory is set to the Workspace value.

  • If the ABAQUS release number is greater than or equal to 6.8, the keyword memory is set to the Workspace value and the Database value is ignored.

Workbench does not change the memory values if they are out of bounds for the ABAQUS solver.