Add ClimaGPU Backend

[nefrathenrici]

Purpose

To-do

Content

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• I have read and checked the items on the review checklist.

[Sbozzolo]

I think match is more appropriate function to use here

[nefrathenrici]

Is !isnothing(match(regex, hostname)) then preferable to occursin(regex, hostname), or is there a better way to use match?

[Sbozzolo]

One might wonder why you used occursin. What you want to check is that the hostname matches your regular expression, non that it contains it.

But what you could do is (schematically):

HOSTNAMES = Dict("^clima.gps.caltech.edu$" => ClimaGPU, "aaaa" => CaltechHPC, "bbb" => CaltechHPC)
backend = get(HOSTNAMES, first(filter(x -> !isnothing(match(x, gethostname(), keys(HOSTNAMES))))

(There's certainly more elegant ways)

[nefrathenrici]

I believe occursin(regex,str) checks that the string matches the regex, but your way is already cleaner. I will incorporate it soon, thank you!

[Sbozzolo]

Yes, it does, but when it is less clear to readers (I think). Your intent is to match the regular expression and you can make it more explicit by using the function match