Performance Options
This dialog allows you to customize the performance of JetStream.
Go to Tools, Global Options, Performance
The Performance dialog is displayed:
Memory . Check the Auto check box for JetStream to automatically calculate the maximum memory that may be used. This will take the lowest of your available physical memory or address space, less that required for your Windows operating system.
Alternatively, uncheck this option and manually enter the limit.
On Load . The Collapse on Convert list box can be set to alter layers shown in the Selection Set window on loading native CAD model files. Each type collapses the Selection Set tree up to the specified level. So None does not collapse the tree, Composite Objects collapses the tree up to the level of composite objects, etc. This enables performance to be prioritized over structure/properties and has the added benefit of improving streaming by cutting down the logical structure.
It should be noted that whilst JetStream will try to collape items to the fewest number possible, it may be necessary to prevent collapsing in some cases to preserve model fidelity. For example if an item has properties or materials unique to itself, then collapsing would endanger this information, and therefore it will not be collapsed.
The Close NWC/NWD files on load check box, if checked, turns off any streaming on loaded NWC and NWD files, loading them into memory in their entirety, and then closing them. This allows other programs to write to these files whilst they are in use.
Merge Duplicates . These options improve performance by multiply instancing matching items. Rather than storing every item in memory, if any items are the same, JetStream can store one instance of them and 'copy' that instance into other positions. This is of particular benefit on larger models, where there are significant numbers of these duplicate geometries.
The options available determine when JetStream should perform this merging process:
On Convert . Merge duplicates when converting a CAD file.
On Append . Merge duplicates when a new file is appended to the current scene.
On Load . Merge duplicates when loading a file into JetStream.
On Save NWF . Merge duplicates when saving the current scene out to .nwf.
Temporary File Location . Check the Auto check box for JetStream to automatically select your user Temp directory. Alternatively, if you prefer to select another location, unselect this option and enter the path accordingly.