Closed yingsu00 closed 3 years ago
chrisseaton
commented
3 years ago I'm not sure I've ever tried using a standard JVM to build Graal. I think it can be done but it might need some configuration. Most people would use a special JVMCI build of OpenJDK https://github.com/graalvm/labs-openjdk-11/releases.
oraluben
commented
3 years ago Are you building GraalVM with GraalVM? I don't think that's the normal use case.
You should get a JVMCI JDK (from the link above) and set JAVA_HOME to it. EXTRA_JAVA_HOMES is not necessary here.
yingsu00
commented
3 years ago @chrisseaton @oraluben Thank you very much. Using the JVMCI JDK works. Does that mean I need to use the JVMCI JDK for my application in order to define my own intrinsic and run on GraalVM ?
chrisseaton
commented
3 years ago You should use JVMCI JDK to build - at the least just to avoid annoying configuration problems and things.
You can run on a recent standard Java I think - it needs some flags and things and isn't always compatible.
What are you trying to achieve? I'd use a GraalVM to run your application unless you've got some special reason or constraint why you can't. It'll just be an easier path all around.
yingsu00
commented
3 years ago You should use JVMCI JDK to build - at the least just to avoid annoying configuration problems and things.
You can run on a recent standard Java I think - it needs some flags and things and isn't always compatible.
What are you trying to achieve? I'd use a GraalVM to run your application unless you've got some special reason or constraint why you can't. It'll just be an easier path all around.
@chrisseaton Thanks Chris. I'm trying to build compiler intrinsics that supports AVX instructions and use them in my Java application. What build process and configuration do you recommend?
chrisseaton
commented
3 years ago I'd recommend building using JVMCI, and then running your application using the GraalVM you just built.
yingsu00
commented
3 years ago @chrisseaton Chris, Thank you for answering my questions. There are a few more questions that I have:
I'd like to call some SIMD intrinsics in my application. For example, I want to call BMI instruction PDEP and PEXT in my Java application. To do this I'm thinking to create a BMI2Node which contains a @NodeIntrinsic public static native BigInteger compute(op, value, mask) that emits the masm code, then in my application I can call BMI2Node.compute(PDEP, value, mask). Is this supposed to work?
I tried to call an existing NodeIntrinsic to test my idea above:
public static void main(String[] args) {
int[] array = new int[100];
System.out.println(OffsetAddressNode.address(array, 0));
}But this doesn't work:
java: package org.graalvm.compiler.nodes.memory.address is not visible
(package org.graalvm.compiler.nodes.memory.address is declared in module jdk.internal.vm.compiler, which is not in the module graph)So I wonder if this is possible at all? If yes what's the right way to do it?
ps. I was following the "Compiler Intrinsics" section in https://www.slideshare.net/ThomasWuerthinger/2015-cgo-graal?from_action=save but the example in this talk is no longer available in GraalTutorial.java. I wonder if you can point me to some examples so that I can call SIMD instructions in the application level? If this is possible it will certainly open a new world for the Java community.
chrisseaton
commented
3 years ago Sorry you've sort of exceeded my working knowledge there without spending a lot of time looking into it. Hopefully someone working on this part of the project will address this issue.
oubidar-Abderrahim
commented
3 years ago I believe @dougxc can either provide some insight or pinpoint someone who can. @dougxc Would you mind taking a look at this?
dougxc
commented
3 years ago Please state the JDK you are using (i.e. what does $JAVA_HOME/bin/java -version print out), as well as the full command line for your test.
dougxc
commented
3 years ago Please re-open once a reproducer can be provided.
Describe the issue mx build for graal/compiler failed on MacOS
Steps to reproduce the issue git clone git@github.com:yingsu00/graal.git git clone git@github.com:graalvm/mx.git export PATH=$PWD/mx:$PATH cd ~/graal/compiler mx build
Describe GraalVM and your environment:
More details Note that all the files in
/Library/Java/JavaVirtualMachines/graalvm-ce-java11-21.0.0/Contents/Home/jmodsare actually there but the mx build was unable to read them.