Opening Models
You can open a model version in the COMSOL Desktop from The Model Manager Window or The Databases Tree by double-clicking a model version or by selecting a model version and clicking Open () in the Item section of the Home toolbar. You can also double-click or click Open from the toolbars of other windows in the Model Manager workspace that show model versions.
When you try to open a model version from the Model Manager window and the searched location is set to a branch, or from the Databases tree under a branch node, Model Manager first checks if any newer versions of drafts of the model exist on the same branch. If so, The Open Dialog Box is shown in which you can choose to open one of these newer draft versions instead. This helps you, for example, from accidentally creating a new draft when one is already ongoing — perhaps created by one of your coworkers.
The Open Dialog Box
The Open dialog box shows a tree of model versions that may be of particular interest when opening a model version. The root node is the latest version of the model initially selected. Child nodes are the latest versions of drafts created from that model. Select one of the nodes and click Open to open a model version in the COMSOL Desktop.
Preventing Simultaneous Access
While Model Manager has no concept of automatically locking a model for exclusive access by a single user, you can achieve the same effect via permissions — see Granting Permissions. You can, for example, assign the Open model permission or Save model permission exclusively to yourself so that only you can open or save versions of a model.
If a simulation model is being developed in a collaborative setting, and you want to guarantee that only one person is modifying the model at a time, assign a Protected permission template and hand over the model by changing its owner — see Owners.
Opening a Model on a Cluster
You can open a model stored in a database on a cluster as long as the cluster’s root node can connect to the database. In the Preferences dialog box, select From intermediate file in the Load model on nonroot nodes list under Cluster on the Model Manager page to only require that the root node can connect. Select Direct from database in case also nonroot nodes can connect.
When From intermediate file is selected, the model is first saved as a temporary file on the root node’s file system and then transfered to all nonroot nodes. When Direct from database is selected, all nodes load the model directly from the database without any intermediate step.
Network Connection Issues
When you open a model from a database, binary data such as meshes, geometries, solutions, and result plots are only loaded on-demand. This reduces, for example, unnecessary bandwidth usage when connected to a server database via a Model Manager server.
If you experience network connection issues when COMSOL Multiphysics needs to load binary data from the database, you will be asked to save any ongoing modeling work as a recovery on the file system. The model can be opened from recovery once the network connection is reestablished.