Re: Openjdk shark and cacao VMs not working

Re: Openjdk shark and cacao VMs not working

[Koen Kooi]

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On 19-07-10 11:37, Koen Kooi wrote:
> Hi,
>
> I built openjdk completely from scratch and installed it:
>
> opkg install openjdk-6-common openjdk-6-demo openjdk-6-java
> openjdk-6-jdk openjdk-6-jre
>
> opkg install openjdk-6-vm-shark openjdk-6-vm-cacao
>
> That needs to be done in 2 opkg commands since -cacao and -shark edit a
> jvm.cfg in their postinst which isn't in their Depends: line. Trivial to
> fix, need to sit down and see in which package it resides.
>
> So:
>
> root@beagleboard-C4:~# java -zero Linpack # [1]
> Mflops/s: 9.537  Time: 0.07 secs  Norm Res: 1.43  Precision:
> 2.220446049250313E-16
>
> So far, so good. Better than the 3 Mflops jamvm+classpath gets, but not
> as nice as the 16Mflops cacao+classpath can do.
>
> So lets try some other VMs:
>
> root@beagleboard-C4:~# java -shark Linpack
> ARMCodeEmitter::emitPseudoInstruction
> UNREACHABLE executed at
> /OE/angstrom-dev/work/armv7a-angstrom-linux-gnueabi/llvm2.7-2.7-r6/llvm-2.7/lib/Target/ARM/ARMCodeEmitter.cpp:554!
> Stack dump:
> 0.      Running pass 'ARM Machine Code Emitter' on function
> '@"Linpack::daxpy"'
> Aborted
>
> OK, Xerxes blogged about debugging such issues, but the summer intern is
> too busy with other stuff currently.
>
> root@beagleboard-C4:~# java -cacao Linpack
> java: avl.c:348: avl_find: Assertion `tree' failed.
> Aborted
>
> No idea on that.
>
> Do the java mages have some idea on how to get shark and cacao working well?

So, after yesterdays commits:

root@beagleboard-C4:~# java -shark Linpack
Mflops/s: 1.416  Time: 0.49 secs  Norm Res: 1.43  Precision:
2.220446049250313E-16
root@beagleboard-C4:~# java -zero Linpack
Mflops/s: 8.918  Time: 0.08 secs  Norm Res: 1.43  Precision:
2.220446049250313E-16
root@beagleboard-C4:~# java -cacao Linpack
Mflops/s: 20.808  Time: 0.03 secs  Norm Res: 1.43  Precision:
2.220446049250313E-16
root@beagleboard-C4:~#

regards,

Koen
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Openjdk shark and cacao VMs not working

[Koen Kooi]

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Hi,

I built openjdk completely from scratch and installed it:

opkg install openjdk-6-common openjdk-6-demo openjdk-6-java
openjdk-6-jdk openjdk-6-jre

opkg install openjdk-6-vm-shark openjdk-6-vm-cacao

That needs to be done in 2 opkg commands since -cacao and -shark edit a
jvm.cfg in their postinst which isn't in their Depends: line. Trivial to
fix, need to sit down and see in which package it resides.

So:

root@beagleboard-C4:~# java -zero Linpack # [1]
Mflops/s: 9.537  Time: 0.07 secs  Norm Res: 1.43  Precision:
2.220446049250313E-16

So far, so good. Better than the 3 Mflops jamvm+classpath gets, but not
as nice as the 16Mflops cacao+classpath can do.

So lets try some other VMs:

root@beagleboard-C4:~# java -shark Linpack
ARMCodeEmitter::emitPseudoInstruction
UNREACHABLE executed at
/OE/angstrom-dev/work/armv7a-angstrom-linux-gnueabi/llvm2.7-2.7-r6/llvm-2.7/lib/Target/ARM/ARMCodeEmitter.cpp:554!
Stack dump:
0.      Running pass 'ARM Machine Code Emitter' on function
'@"Linpack::daxpy"'
Aborted

OK, Xerxes blogged about debugging such issues, but the summer intern is
too busy with other stuff currently.

root@beagleboard-C4:~# java -cacao Linpack
java: avl.c:348: avl_find: Assertion `tree' failed.
Aborted

No idea on that.

Do the java mages have some idea on how to get shark and cacao working well?

regards,

Koen

[1] http://www.netlib.org/benchmark/linpackjava/LinpackJava.zip compiled
with javac on osx
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