I've been struggling with large files crashing Sharkv7. I suspected it was memory related so I did a test leaving Windows Task Manager open to view memory usage by Shark.

When the program is first opened, Task Manager is reporting 83K of memory usage. After opening my file, memory usage is reported to be 402K.

Without doing a thing, I closed the file but left Shark open. Memory usage is reported to be 379K.

Reopening the same file; memory usage climbs to 638K. Closing the file reduces the memory usage to 614K.

I repeated this test until memory usage reached 1,300K and then Shark crashed. This was just opening and closing the same file over and over, making no changes and Shark becomes unstable.

Repeated this in the 64 bit Windows (24 G of ram) version and the same issue of memory growing almost exponentially paralleled my 32 bit test.

Can this be fixed?

-John

Thanks Tim.

Do you know what Windows is reporting? I repeated this experiment with other software and for the most part, they behaved as one would expect. What is interesting is according to Windows, my available memory continues to shrink, so it is going somewhere if it is to be believed.

I will send you a file.

Thanks.

John

Hi Tim

If acis saves memory for objects reuse, when you close a file and reopen the exact same geometry why would the memory use grow significantly? Maybe a small amount but is it not the purpose of holding objects in memory fast recall, undo and redo operations?

2nd if you close a file why keep the geometry in memory if you never reopen same file in the same session its not the best use of memory. Can you not free the memory and only allocate when the file is opened? So if you reopen you take a little time to reallocate?

Thanks
Jason