A potential issue with using a 2nd order mesh is memory allocation where the mesh may be too large for the machine size and solver that have been chosen (default = Multfront).

To tackle this there are a couple of options depending on the equation solver that you want to use:

**1. Direct Solver**

If you want to use a direct solver, *MUMPS* will be a better choice. You will find this in the project tree under Numerics.

In Simulation Control, set the *Number of computing cores* to be 32 and in Details set the *Number of computing cores* (parallel) to be 2 - 4.

**2. Iterative Solvers**

An iterative solver could also be an option to reduce the memory requirements. For this, choose the equation solver in Numerics to be *GCPC* or *PETSC*.

In Simulation Control for *GCPC*, set the *Number of computing cores* to be 32 and in Details the *Number of computing cores* (parallel) can also be 32 for this solver.

For PETSC, set the *Number of computing cores* to be 32 and in Details set the *Number of computing cores* (parallel) to 4-8.