Windows 32-bit operating systems have a 2 GB memory limit per process; however there are some guidelines to help you avoid errors due to this memory limit.
A large number of open studies in a project may exceed the memory limit.
- Close any open studies that are not being used at a given time.
- Consider splitting one project with a large number of studies into two or more projects with a smaller number of studies in each.
Even a small number of large studies open in a project may exceed the memory limit.
- It is recommended to open only one study per project.
Post-processing large result files may exceed the memory limit. In particular, 3D results require greater amounts of memory.
- Consider using the Optimize memory for results display options in the results preferences (
Application menu > Options > Results tab) to minimize the amount of memory required to display results.
Running a Fill+Pack analysis on a model with a large number of elements may exceed the memory limit.
- Try remeshing the model using a coarser mesh to reduce the number of elements. Note: Note that using a coarse mesh may affect analysis accuracy, in particular for 3D models.
- For a 3D model only, turn off the AMG matrix solver. Change the AMG matrix solver selection option setting to Off in the Solver Parameters dialog. This option is set to Auto by default.
Running a Cool analysis on a model with a large number of elements may exceed the memory limit.
- Review the mesh density in the part and on cooling circuits, and remesh using a coarser mesh if possible.
Running a 3D Warp analysis may exceed the memory limit.
- If the model contains more than 800,000 elements, change the Use AMG matrix solver option to No on the Warp Settings page of the Process Settings Wizard. This option is on by default. Turning this option off enables the legacy (SSORCG) matrix solver. The AMG matrix solver is faster but requires more memory compared to the legacy solver.
- Enable mesh aggregation to reduce memory requirement for analyses of thin-wall parts. Make sure the Use mesh aggregation and 2nd-order tetrahedral elements option is selected on the Warp Settings page of the Process Settings Wizard. This option is on by default. Note: If the part geometry is thick or solid (true 3D geometry), using mesh aggregation is not recommended. Turning off the mesh aggregation option causes the original mesh to be used for the analysis. This increases analysis time and memory requirement but improves accuracy for true 3D parts.
- The maximum model size on which a 3D Warp analysis can be run on a 32-bit operating system is up to 1.5 million elements (using legacy solver and mesh aggregation options).
Free resources (memory, swap space) on the machine.
Add more resources (memory, swap space) to your machine.
If you have tried the above options, but still exceed the 2GB memory limit, consider changing to a computer with a 64-bit Windows operating system.