Using bartMachine inside a package

[bakaburg1]

Hello!

I am trying to use bartMachine as part of a larger package, but I'm struggling against Java memory management.

When used inside a package, I never run library(bartMachine) and even if the java.parameters option is set up, the information is never passed to the java machine underneath.

Trying to emulate the loading of the package I run:

libname <- list.files(R.home(), 'library', full.names = T)
rJava::.jpackage('bartMachine', lib.loc = libname)
rJava::.jpackage('bartMachineJARs', lib.loc = libname)

after setting the memory option. But nevertheless running rJava::.jcall(rJava::.jnew("java/lang/Runtime"), "J", "maxMemory") / 1e9 after it shows me the default amount of memory.

To give more info, this is my workflow:

• First check if java.parameters is set, if not set up, ask the user to choose an amount of memory to use.
• Then there's the .jpackage() code as above, but I'm not sure it's doing anything.
• If not done already, the user chooses the number of cores to use.
• the Bart model is run
• I extract the posterior from it using bart_machine_get_posterior()
• I extract the variable importance using get_var_props_over_chain() which is where I get the memory problem:

  <OutOfMemoryError/VirtualMachineError/Error/Throwable/Object/Exception/error/condition>
  Error in `.jcall(bart_machine$java_bart_machine, "[D", "getAttributeProps", 
  type)`: java.lang.OutOfMemoryError: Java heap space

Is it possible to use bartMachine inside a package without loading and attaching it?

[kapelner]

This is clearly a R-Java-rJava problem. I'm sorry.