R and Partial Evaluation with Graal

[Juan Fumero]

Hi all, 
  I am using the R version [1] in github. I saw there is no dependency
now with Graal-core. Just Truffle instead. My question is how to use
now the Graal JVMCI compiler. 

I compile with the graal-core [2] compiler separately. But when I
execute R I get this error:

<error>
$ mx R 
..... 
Exception in thread "main" java.lang.InternalError
	at com.oracle.truffle.api.Truffle$1.run(Truffle.java:103)
	at com.oracle.truffle.api.Truffle$1.run(Truffle.java:58)
	at java.security.AccessController.doPrivileged(Native Method)
	at com.oracle.truffle.api.Truffle.initRuntime(Truffle.java:58)
	at com.oracle.truffle.api.Truffle.<clinit>(Truffle.java:46)
	at
com.oracle.truffle.api.impl.Accessor.<clinit>(Accessor.java:321)
	at
com.oracle.truffle.api.vm.PolyglotEngine.<clinit>(PolyglotEngine.java:1
07)
	at
com.oracle.truffle.r.engine.shell.RCommand.readEvalPrint(RCommand.java:
191)
	at
com.oracle.truffle.r.engine.shell.RCommand.main(RCommand.java:85)
Caused by: java.lang.reflect.InvocationTargetException
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.ja
va:62)
	at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccesso
rImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at com.oracle.truffle.api.Truffle$1.run(Truffle.java:100)
	... 8 more
Caused by: java.lang.NoClassDefFoundError:
com/oracle/truffle/api/TruffleRuntimeAccess  (suppress with
-Djvmci.service.suppressNoClassDefFoundError=true)
	at jdk.vm.ci.services.Services$1.computeValue(Services.java:59)

	at jdk.vm.ci.services.Services$1.computeValue(Services.java:50)

	at java.lang.ClassValue.getFromHashMap(ClassValue.java:227)
	at java.lang.ClassValue.getFromBackup(ClassValue.java:209)
	at java.lang.ClassValue.get(ClassValue.java:115)
	at jdk.vm.ci.services.Services.loadSingle(Services.java:120)
	... 13 more
Caused by: java.lang.ClassNotFoundException:
com.oracle.truffle.api.TruffleRuntimeAccess
	at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
	at
java.net.FactoryURLClassLoader.loadClass(URLClassLoader.java:814)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:763)
	at
java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
	at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)

	at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
	at
java.net.FactoryURLClassLoader.loadClass(URLClassLoader.java:814)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	at jdk.vm.ci.services.Services.getServiceImpls(Native Method)
	at jdk.vm.ci.services.Services.access$000(Services.java:37)
	at jdk.vm.ci.services.Services$1.computeValue(Services.java:54)

	... 18 more\
</error>

So I run with the option suggested in the error:

$ mx -v R --J @'-Djvmci.service.suppressNoClassDefFoundError=true '
myScript.R 

I can run FastR but,  is this the use of  the Partial Evaluator in
Graal through the OptimizedCallTarget? 

[1] https://github.com/graalvm/fastr 
[2] https://github.com/graalvm/graal-core/commit/071173a4a61247df0826a0
1db20bf7b381f1bbfe 

Thanks
-juan


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