Just as an FYI: we have removed the Java bindings from the 1.7.0 release due to all the reported errors - looks like that code just isn't ready yet for release. It remains available on the nightly snapshots of the developer's trunk while we continue to debug it.

With that said, I tried your example using the current developer's trunk - and it worked just fine.

I ran it on a single node, however. Were you running this across multiple nodes? Is it possible that the "classes" directory wasn't available on the remote node?


On Jan 16, 2013, at 4:17 PM, Karos Lotfifar <foadfbf@gmail.com> wrote:

Hi, 
The version that I am using is 

1.7rc6 (pre-release)


Regards,
Karos

On 16 Jan 2013, at 21:07, Ralph Castain <rhc@open-mpi.org> wrote:

Which version of OMPI are you using?


On Jan 16, 2013, at 11:43 AM, Karos Lotfifar <foadfbf@gmail.com> wrote:

Hi,

I am still struggling with the installation problems! I get very strange errors. everything is fine when I run OpenMPI for C codes, but when I try to run a simple java code I get very strange error. The code is as simple as the following and I can not get it running:

import mpi.*;

class JavaMPI {
  public static void main(String[] args) throws MPIException {
    MPI.Init(args);
    System.out.println("Hello world from rank " +
      MPI.COMM_WORLD.Rank() + " of " +
      MPI.COMM_WORLD.Size() );
    MPI.Finalize();
  }
}

everything is ok with mpijavac, my java code, etc. when I try to run the code with the following command:

/usr/local/bin/mpijavac -d classes JavaMPI.java       --> FINE
/usr/local/bin/mpirun -np 2 java -cp ./classes JavaMPI  --> *ERROR*

I'll the following error. Could you please help me about this (As I mentioned the I can run C MPI codes without any problem ). The system specifications are:

JRE version: 6.0_30-b12 (java-sun-6)
OS: Linux 3.0.0-30-generic-pae #47-Ubuntu
CPU:total 4 (2 cores per cpu, 2 threads per core) family 6 model 42 stepping 7, cmov, cx8, fxsr, mmx, sse, sse2, sse3, ssse3, sse4.1, sse4.2, popcnt, ht




##################################################################################################################
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  SIGSEGV#
# A fatal error has been detected by the Java Runtime Environment:
#
#  SIGSEGV (0xb) at pc=0x70e1dd12, pid=28616, tid=3063311216
#
 (0xb) at pc=0x70f61d12, pid=28615, tid=3063343984
#
# JRE version: 6.0_30-b12
# JRE version: 6.0_30-b12
# Java VM: Java HotSpot(TM) Server VM (20.5-b03 mixed mode linux-x86 )
# Problematic frame:
# C  [libmpi.so.1+0x20d12]  unsigned __int128+0xa2
#
# An error report file with more information is saved as:
# /home/karos/hs_err_pid28616.log
# Java VM: Java HotSpot(TM) Server VM (20.5-b03 mixed mode linux-x86 )
# Problematic frame:
# C  [libmpi.so.1+0x20d12]  unsigned __int128+0xa2
#
# An error report file with more information is saved as:
# /home/karos/hs_err_pid28615.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#
[tulips:28616] *** Process received signal ***
[tulips:28616] Signal: Aborted (6)
[tulips:28616] Signal code:  (-6)
[tulips:28616] [ 0] [0xb777840c]
[tulips:28616] [ 1] [0xb7778424]
[tulips:28616] [ 2] /lib/i386-linux-gnu/libc.so.6(gsignal+0x4f) [0xb75e3cff]
[tulips:28616] [ 3] /lib/i386-linux-gnu/libc.so.6(abort+0x175) [0xb75e7325]
[tulips:28616] [ 4] /usr/lib/jvm/java-6-sun-1.6.0.30/jre/lib/i386/server/libjvm.so(+0x5dcf7f) [0xb6f6df7f]
[tulips:28616] [ 5] /usr/lib/jvm/java-6-sun-1.6.0.30/jre/lib/i386/server/libjvm.so(+0x724897) [0xb70b5897]
[tulips:28616] [ 6] /usr/lib/jvm/java-6-sun-1.6.0.30/jre/lib/i386/server/libjvm.so(JVM_handle_linux_signal+0x21c) [0xb6f7529c]
[tulips:28616] [ 7] /usr/lib/jvm/java-6-sun-1.6.0.30/jre/lib/i386/server/libjvm.so(+0x5dff64) [0xb6f70f64]
[tulips:28616] [ 8] [0xb777840c]
[tulips:28616] [ 9] [0xb3891548]
[tulips:28616] *** End of error message ***
[tulips:28615] *** Process received signal ***
[tulips:28615] Signal: Aborted (6)
[tulips:28615] Signal code:  (-6)
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#
[tulips:28615] [ 0] [0xb778040c]
[tulips:28615] [ 1] [0xb7780424]
[tulips:28615] [ 2] /lib/i386-linux-gnu/libc.so.6(gsignal+0x4f) [0xb75ebcff]
[tulips:28615] [ 3] /lib/i386-linux-gnu/libc.so.6(abort+0x175) [0xb75ef325]
[tulips:28615] [ 4] /usr/lib/jvm/java-6-sun-1.6.0.30/jre/lib/i386/server/libjvm.so(+0x5dcf7f) [0xb6f75f7f]
[tulips:28615] [ 5] /usr/lib/jvm/java-6-sun-1.6.0.30/jre/lib/i386/server/libjvm.so(+0x724897) [0xb70bd897]
[tulips:28615] [ 6] /usr/lib/jvm/java-6-sun-1.6.0.30/jre/lib/i386/server/libjvm.so(JVM_handle_linux_signal+0x21c) [0xb6f7d29c]
[tulips:28615] [ 7] /usr/lib/jvm/java-6-sun-1.6.0.30/jre/lib/i386/server/libjvm.so(+0x5dff64) [0xb6f78f64]
[tulips:28615] [ 8] [0xb778040c]
[tulips:28615] [ 9] [0xb3899548]
[tulips:28615] *** End of error message ***
--------------------------------------------------------------------------
mpirun noticed that process rank 1 with PID 28616 on node tulips exited on signal 6 (Aborted).
--------------------------------------------------------------------------

##################################################################################################################

--
Regards,
Karos Lotfifar _______________________________________________
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