I'm running Matlab on a machine with 200 GB of ram, yet Matlab slows down horribly when I store large (~10GB) objects in the workspace.
To test, I've tried running tic; 1+1; toc.
This snippet sometimes runs nearly instantaneously (as one would expect) but often takes minutes! I cannot discern a pattern in the runtime--it seems random. However, even when it runs slowly (5 min for example), toc still shows that it ran in milliseconds. While the command is running, I'm able to use the computer and Matlab normally (except the command window of course.)
Scripts also run extremely slowly.
How can I speed things up?