hello，i meet some errors about lenskit-hello HOT 4 CLOSED

The key error is this:

Caused by: java.lang.OutOfMemoryError: Java heap space
at it.unimi.dsi.fastutil.doubles.DoubleArrays.grow(DoubleArrays.java:165)
at it.unimi.dsi.fastutil.doubles.DoubleArrayList.grow(DoubleArrayList.java:192)
at it.unimi.dsi.fastutil.doubles.DoubleArrayList.add(DoubleArrayList.java:206)
at org.grouplens.lenskit.scored.ScoredIdListBuilder.add(ScoredIdListBuilder.java:209)
at org.grouplens.lenskit.util.UnlimitedScoredItemAccumulator.put(UnlimitedScoredItemAccumulator.java:57)
at org.lenskit.knn.item.model.ItemItemModelBuilder.get(ItemItemModelBuilder.java:112)
at org.lenskit.knn.item.model.ItemItemModelBuilder.get(ItemItemModelBuilder.java:50)
at org.grouplens.grapht.Instantiators$ProviderInstantiator.instantiate(Instantiators.java:153)
... 12 more

That means that Java does not have enough memory. Try telling Java to use more memory with:

set JAVA_ARGS=-Xmx2g

(provided you have at least 4, preferably 8, GB of RAM on your system).

from lenskit-hello.

Im very excited to receive your reply!
I run the project in the command line， I just run
set JAVA_ARGS=-Xmx2g
in the command line，but it still didn't work. Should I add this sentence to lenskit-hello-master.bat or somewhere else?

from lenskit-hello.

I cannot wait to tell you that I succeed！ I changed the system environment variables，“JAVA_OPTS=-Xms64m -Xmx1g”.
I didn‘t use 2g because when I set 2g，there’s another orror occured————Could not reserve enough space for 2097152KB object heap.
Anyway,it works!Thank you soooooo much and best wishes to you.

from lenskit-hello.

@ChenKevin0123 Glad to hear it's working.

Are you running a 32-bit Java? That's probably why 2G failed.

And evidently I had the wrong variable name (some things use ARGS, some OPTS, and I was going from memory). I would recommend setting JAVA_OPTS each terminal, though, using

set JAVA_OPTS=-Xmx1g

instead of setting a system environment variable. That way it only affects the program you want to run, rather than possibly affecting other programs on your system.

from lenskit-hello.