Volume Sharing and Multi- Processing

The new processing advantages...

• Multiple volumes open
• Multiple processes running
• Memory mapped files
• Limited by disc space
• Files are persistent

Notes

Analyze_AVW permits you to have open multiple volumes and to be processing multiple datasets simultaneously. This should come as no surprise to UNIX users, though it is a big change from the old version of Analyze. (You can open multiple files in the old Analyze using trickery, but you have to know what you are doing and it only works in special cases.)

Analyze_AVW uses memory-mapped files when working with datasets. For each file open, Analyze_AVW chews up local disc space proportional to the size of the file opened. A 100MB file eats up 100MB of local disc; disc that does not get freed automatically upon exiting. This makes processing of large datasets possible, but limits other users if you forget to unload the datasets when you are done!

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