[Modules] Prevent modulefile search from looking at all files in directory

[Miller, E. <Eri...@am...>]

[AMD Official Use Only - AMD Internal Distribution Only]

My question:  Is there a way to optimize the modulefile search algorithm for cases where the directory contains many files that are NOT modulefiles?

Background:

Given a directory structure like:

ModulePath/MyModule/1.0/
ModulePath/MyModule/1.1/
...

And given that each version directory contains one file named "modulefile" at the root of the directory and also contains a large number of other subdirectories and files.

The command: "module load MyModule/1.0" will be very slow.

The root cause appears to be that the modulefile search algorithm stats and reads every file in each of the ModulePath/MyModule/* directories.
Going back to modulecmd 3.2.10 we do not see this issue.

I've tried setting MODULES_MCOOKIE_CHECK=eval, but that caused errors when the loader encountered non-modulefile files.

I've also tried using the cachebuild command, and while it helps, it is still slower than 3.2.10.
The cachefile also appears to be tied to that specific version of modulecmd due to the header: #%Module5.5.


Thanks!
Eric Miller