solve M-Star Solve

Introduction

M-Star Solve is the standard solver application used to run individual simulations using the specified model setup and solver settings. It provides the core simulation execution environment for solving and monitoring CFD cases.

../_images/solver.png
Open

This opens the file explorer to the case directory (Windows only).

Run

This starts the simulation with the configured resource.

Resume

This resumes a simulation from the last check point.

Stop

This stops a running simulation. This is attempted gracefully before force-terminating the solver.

Extend

This makes quick edits to the solver input file to extend the run time of the simulation.

Quick Write

Force output of the current statistics file, slice file, particle file, volume file, and/or checkpoint file.

Post

This opens the post-processor with the case results.

Browse

Open the simulation working directory, containing the simulation input files and any associated output directories.

Case Path

This specifies where your output data will be written.

GPUs

The M-Star CFD Solver runs on GPUs. The specified GPU accelerators will be used to execute the solver.

Run M-Star Solve

In M-Star Pre, click Solve in the toolbar to expose the options to run the simulation. Selecting Run the solver will export the case data (.stl, .xml files) and open the M-Star Solver GUI in the case directory. Next, specify the computational resources and click Run to start the simulation.

Requirements for Multi-GPU usage on Windows

  • The GPU hardware must have peer-access. This lets the GPUs communicate with each other. The Solver GUI will check this requirement before running.

  • The GPU hardware must be configured in TCC mode which means any GPU used in a solver calculation cannot be currently used for any display. This may require using the nvidia-smi utility to configure a given GPU.

  • The GPU hardware must have the same processor architecture.

  • For more information about multi-GPU setup and usage, see Multi-GPU Setup.

Solver Extensions

M-Star Solve has Extensions which are a user-configurable area for running common tasks. There are some default scripts provided that will require M-Star Python (or equivalent) to be installed.

Restarting a Simulation

Within Windows environments, open M-Star Solve from the Windows start menu. You will be prompted to browse to the case directory corresponding to the simulation you want to restart. Click Resume to continue the simulation.