MCR cache for different programs and multiple users

Hi,

I run a compiled program (say prog_1) on a server running Scientific Linux 7. The MCR cache is created (if not present already) in a folder specific to the user and specified as: MCR_CACHE_ROOT=/some/path/$USER This way, the program works for multiple users as concurrent runs from users 1 ans 2 will access their own cache.

Now I have a separate program (say prog_2) deployed on the same server for the same number of users. Should the same MCR cache location be used, i.e. would it contain separate subfolders for different programs? Or should I specify a different one for each program, such as: MCR_CACHE_ROOT=/some/path/$USER/prog_1 before calling prog_1 MCR_CACHE_ROOT=/some/path/$USER/prog_2 before calling prog_2

Slightly different point, but connected to this. Say I run prog_1 once and the cache is created. Then I change my program and recompile it. Before running it again, should I delete the cache so that it is recreated or is this taken care of automatically?

Thanks for your help and clarifications on this.

Best regards, Luca Foresta