Add CalculateAverage_ebarlas submission.

[ebarlas]

No description provided.

[gunnarmorling]

Nice, thanks a lot! Will evaluate it tomorrow. What's the difference between this one and the baseline on your machine?

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[ebarlas]

On a c5.2xlarge AWS EC2 instance (roughly equivalent to target env):

Reference:

real	4m25.991s
user	4m22.901s
sys	0m4.935s

Mine:

real	0m15.288s
user	1m59.042s
sys	0m0.580s

[gunnarmorling]

Very cool, looks like a top contender :)

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[ebarlas]

Thanks! I'm eager to see how it measures up!

I haven't done any micro-optimizations yet. I assume I can simply open subsequent PRs with additional changes?

[gunnarmorling]

Yepp, absolutely. You can send follow-up PRs until the challenge closes (Jan 31).

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[ebarlas]

Updated exec time after addition optimizations:

real	0m10.828s
user	1m24.306s
sys	0m0.660s

[gunnarmorling]

Hey, could you run mvn license:format to add the missing license header, rebase to latest main and force-push to this PR? Thx!

[ebarlas]

Sure, looking now...

[ebarlas]

Done. How does that look now?

[gunnarmorling]

This looks great! 2nd place right now with 00:16.558 after @spullara! Worth trying how yours fares with GraalVM, too, I suppose.

[lobaorn]

Shamelessly sharing this idea for JVM/GC tuning in another PR/discussion? #15 (comment)

[ebarlas]

@gunnarmorling, silly question: how can I request execution with GraalVM CE? I just re-ran in my test environment and it is indeed noticeably faster there.

I don't see any metadata or env setup indicating GraalVM by @spullara.

[gunnarmorling]

@ebarlas, please specify the JDK in the submission PR (see README). Indeed this wasn't the case for @spullara explicitly, but I read between the lines that this is what he tested with so I interpreted this as to use GraalVM. So just create a new PR for if you'd like to do that. Better yet: could you try whether adding sdk use java <your distro> at the beginning of your launch script works? If so, could you create a PR with that and also point that out in the README? Thanks!

[ebarlas]

Okay, thanks!

[ebarlas]

I created a separate PR with a request to run with GraalVM. Includes SDKMAN command.

#45