I tried to make a socket REPL work with GraalVM last night and I bumped into the locking issue again. It does work without a problem on 1.9.0. I wonder what changed between 1.9.0 and 1.10.1 that makes this error appear, while the Android locking issue on JIRA is much older than that?

(Socket REPL with your own :eval fn that is)

Hmm, in 1.9.0 I see this commit: https://github.com/clojure/clojure/blob/841fa60b41bc74367fb16ec65d025ea5bde7a617/src/clj/clojure/core/server.clj

but then a few commits later towards 1.10.1 locking is introduced again: https://github.com/clojure/clojure/commit/4d2a7dbae68036dcc80cb40ca155985ad06aaeb8#diff-9d18217091c22931ab1470e586ec2cd5

could it have something to do with tap> support in prepl? https://github.com/clojure/clojure/blob/4d2a7dbae68036dcc80cb40ca155985ad06aaeb8/src/clj/clojure/core/server.clj#L282-L289

Could very well be. If I remove the locking reference in server.clj I still get the same error

What are the chances of getting Clojure to work on GraalVM?

@neo2551 most of it already works. Is there some code that you couldnt get to work?

@neo2551 Some example projects: - https://github.com/taylorwood/clojurl - https://github.com/kkinnear/zprint - https://github.com/borkdude/clj-kondo

Can you do repl development on GraalVM?

Workflow using GraalVM and some experience sharing Would be a great subject for a talk

Until you start trying to build self-contained binaries it's literally no different from using Oracle or OpenJDK, at least as far as I know.

So, the only difference is when you create uberjar?

So you could use GraalVM Instead of JVM and it would work?

Yes.

With better speed?

And better memory?

The differences arise when you need to create a native image.

But do you need to?

No. You ought to be able to use it as a stand-in replacement for Oracle Java (or OpenJDK). In fact, some people are arguing that people ought to do that. https://hackernoon.com/why-the-java-community-should-embrace-graalvm-abd3ea9121b5

There's a lot of hype around the native image stuff, but I'm personally just as excited about the polyglot features.

Me too

We could just use scikit learn out of the box

And I can finally ditch R xD

Or, like, all of R.

Yeah.

I am thinking of exploring Apache Arrow

For cljs or clj

Oracle's claims about the performance of hitherto non-JVM languages are bananas. https://youtu.be/8AYESZIaacg?t=960

Like, look at FastR.

I need a DF (timeseries) data structure and it is pain without it

Guess I will try to sneak GraalVM into work :)

> sneak Should be pretty painless. You could recommend trying it out to see if there are performance gains. 😉

I've been noodling on a library to make GraalVM cross-language interop easier from the Clojure side.

So far the experience has been completely magical.

Haha, I am solo CLJS developer in a data science team, guess it would be easy for me to make the technical point lol

Okay okay, you got me hooked I will try it. I hope the experience is painless, is there any intro on how to swap the JVM with GraalVM?

user>
(put-binding! "incall" (proxy-fn #(map inc %)))
nil
user>
(r-eval "incall(1:10) + 1")
[3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.0]

Looks cool :)

Which libraries are you interested in for R?

I'm new to R actually, so I don't have a specific library in mind.

At work I've been exploring making a Clojure library we develop available to R programmers.

@neo2551 Not to throw a wet blanket on your enthusiasm, but I should say that GraalVM does not make dependency hell any easier. All the pain of working with scikit learn, scipy, and friends will be just as bad in Graal-land.

I haven't yet been able to get Stan to work with GraalVM yet, for example.

Why is there dependency hell?

I always wanted to avoid learning Java, but at some point I will have to I guess.

Python support is experimental haha

Guess R will be the library then.

We could have a CLJ with CLJS interop XD

Oh yeah.

Not unlike Nashorn. RIP.

So what is stopping the community to move to graalVm?

You'd have to ask the community. 🙂

Huh. I'm seeing claims that Oracle JDK 11+ might support some GraalVM features? 😮

@neo2551 You may want to join #data-science if you're not already in there.

Yeah I joined :) I just need time to play a bit with some of their tools.

I feel I am perpetuating the Lisp curse with clojure, I feel I want try things on my own more than to reuse what the community already created.

@zane @neo2551 , regarding R on GraalVM, I have had some basic experiments recently, thanks to a discussion with @slack.jcpsantiago . See some examples here -- maybe this helps: https://github.com/scicloj/fastr-examples/ https://github.com/scicloj/fastr-examples/blob/master/examples/examples.clj

Seems really interesting!