nvidia-gpu cannot be set by exporting an environment variable in bash

[vyu16]

According to the USERS_GUIDE:

The user can change this default value by setting an enviroment variable to the desired value.

The name of this variable is always constructed in the following way:

ELPA_DEFAULT_tunable_parameter_name=value

(By the way environment is misspelled as enviroment.)

However, this doesn't seem to work well with the nvidia-gpu, amd-gup, and intel-gpu variables. Various online resources mentioned that it's not allowed to have a dash in the name of an environment variable. For example see this post on stackoverflow.

So to work this around in bash, something like

env 'ELPA_DEFAULT_nvidia-gpu=1' ./test_elpa.x ...

is needed, instead of the more familar way, export ELPA_DEFAULT_nvidia-gpu=1.

It would be great if this could be clarified in the USERS_GUIDE, or even better, createnvidia_gpu, amd_gpu, and intel_gpu as aliases to the existing ones.

[marekandreas]

Dear @vyu16, thank you for bringing this up. We will have a look at this

[marekandreas]

We have updated the documentation in ELPA 2022.11.001.rc2. Concerning the aliases with an "_" instead of "-", we will introduce this in the first release of 2023. It is to short time to accept this change still in the ELPA 2022.11.001. release.