[raagh77]

To all OpenFOAM users,
We successfully installed OpenFOAM 1.7.1 in our SGI cluster with RHEL 6.2 and also tested one solver simpleFoam with 80 number of processors.
Now we just gave a trial run with twoPhaseEulerFoam but ended up with some errors [as described below]

[31]  [15] ##00     Foam::error: rintStack(Foam::Ostream&)Foam::error: rintStack(Foam::Ostream&)[30]  #0   Foam::error:
rintStack(Foam::Ostream&)--------------------------------------------------------------------------
An  MPI process has executed an operation involving a call to the
"fork()" system  call to create a child process.  Open MPI is currently
operating in a  condition that could result in memory corruption or
other system errors; your  MPI job may hang, crash, or produce silent
data corruption.  The use of  fork() (or system() or other calls that
create child processes) is strongly  discouraged.

The process that invoked fork was:

  Local  host:          compute-0-8.local (PID 32076)
  MPI_COMM_WORLD rank:  31

If you are *absolutely sure* that your application will  successfully
and correctly survive a call to fork(), you may disable this  warning
by setting the mpi_warn_on_fork MCA parameter to  0.
--------------------------------------------------------------------------
 addr2line  failed
[30] #1  Foam::sigFpe::sigFpeHandler(int) addr2line failed
[15] #1   Foam::sigFpe::sigFpeHandler(int) addr2line failed
[30] #2
[30]  addr2line  failed
[30] #3   Foam:ILUPreconditioner::calcReciprocalD(Foam::Field<double>&,  Foam::lduMatrix const&) addr2line failed
[30] #4   Foam:ILUPreconditioner:ILUPreconditioner(Foam::lduMatrix::solver const&,  Foam::dictionary const&) addr2line failed
[15] #2
 addr2line  failed
[30] #5   Foam::lduMatrix:reconditioner::addasymMatrixConstructorToTable<Foam:ILUPreconditioner>::New(Foam::lduMatrix::solver  const&, Foam::dictionary const&) addr2line failed
[30] #6   Foam::lduMatrix:reconditioner::New(Foam::lduMatrix::solver const&,  Foam::dictionary const&) addr2line failed
[30] #7   Foam::PBiCG::solve(Foam::Field<double>&, Foam::Field<double>  const&, unsigned char) const[15]  addr2line failed
[15] #3   Foam:ILUPreconditioner::calcReciprocalD(Foam::Field<double>&,  Foam::lduMatrix const&) addr2line failed
[30] #8   Foam::fvMatrix<double>::solve(Foam::dictionary const&) addr2line  failed
[30] #9   addr2line failed
[15] #4   Foam:ILUPreconditioner:ILUPreconditioner(Foam::lduMatrix::solver const&,  Foam::dictionary const&)
[30]
[30] #10  __libc_start_main addr2line  failed
[15] #5   Foam::lduMatrix::preconditioner::addasymMatrixConstructorToTable<Foam::DILUPreconditioner>::New(Foam::lduMatrix::solver  const&, Foam::dictionary const&) addr2line failed
[30]  #11
[30]
[compute-0-8:32075] *** Process received signal  ***
[compute-0-8:32075] Signal: Floating point exception  (8)
[compute-0-8:32075] Signal code:  (-6)
[compute-0-8:32075] Failing at  address: 0x1f400007d4b
 addr2line failed
[15] #6   Foam::lduMatrix::preconditioner::New(Foam::lduMatrix::solver const&,  Foam::dictionary const&)[compute-0-8:32075] [ 0] /lib64/libc.so.6()  [0x3c81a32900]
[compute-0-8:32075] [ 1] /lib64/libc.so.6(gsignal+0x35)  [0x3c81a32885]
[compute-0-8:32075] [ 2] /lib64/libc.so.6()  [0x3c81a32900]
[compute-0-8:32075] [ 3]  /apps2/OpenFOAM/OpenFOAM-1.7.1/lib/linux64GccDPOpt/libOpenFOAM.so(_ZN4Foam18DILUPreconditioner15calcReciprocalDERNS_5FieldIdEERKNS_9lduMatrixE+0x137)  [0x2b68fd599877]
[compute-0-8:32075] [ 4]  /apps2/OpenFOAM/OpenFOAM-1.7.1/lib/linux64GccDPOpt/libOpenFOAM.so(_ZN4Foam18DILUPreconditionerC2ERKNS_9lduMatrix6solverERKNS_10dictionaryE+0x159)  [0x2b68fd599a39]
[compute-0-8:32075] [ 5]  /apps2/OpenFOAM/OpenFOAM-1.7.1/lib/linux64GccDPOpt/libOpenFOAM.so(_ZN4Foam9lduMatrix14preconditioner31addasymMatrixConstructorToTableINS_18DILUPreconditionerEE3NewERKNS0_6solverERKNS_10dictionaryE+0x3c)  [0x2b68fd599f3c]
[compute-0-8:32075] [ 6]  /apps2/OpenFOAM/OpenFOAM-1.7.1/lib/linux64GccDPOpt/libOpenFOAM.so(_ZN4Foam9lduMatrix14preconditioner3NewERKNS0_6solverERKNS_10dictionaryE+0x2da)  [0x2b68fd58a0ea]
[compute-0-8:32075] [ 7]  /apps2/OpenFOAM/OpenFOAM-1.7.1/lib/linux64GccDPOpt/libOpenFOAM.so(_ZNK4Foam5PBiCG5solveERNS_5FieldIdEERKS2_h+0x6da)  [0x2b68fd58f20a]
[compute-0-8:32075] [ 8]  /apps2/OpenFOAM/OpenFOAM-1.7.1/lib/linux64GccDPOpt/libfiniteVolume.so(_ZN4Foam8fvMatrixIdE5solveERKNS_10dictionaryE+0x147)  [0x2b68fbeba477]
[compute-0-8:32075] [ 9] twoPhaseEulerFoam()  [0x43b9ef]
[compute-0-8:32075] [10] /lib64/libc.so.6(__libc_start_main+0xfd)  [0x3c81a1ecdd]
[compute-0-8:32075] [11] twoPhaseEulerFoam()  [0x42bda9]
[compute-0-8:32075] *** End of error message ***
 addr2line  failed
[15] #7  Foam::PBiCG::solve(Foam::Field<double>&,  Foam::Field<double> const&, unsigned char) const addr2line  failed
[15] #8  Foam::fvMatrix<double>::solve(Foam::dictionary  const&)--------------------------------------------------------------------------
mpirun  noticed that process rank 30 with PID 32075 on node compute-0-8.local exited on  signal 8 (Floating point  exception).
--------------------------------------------------------------------------
[compute-0-0.local:05537]  2 more processes have sent help message help-mpi-runtime.txt /  mpi_init:warn-fork
[compute-0-0.local:05537] Set MCA parameter  "orte_base_help_aggregate" to 0 to see all help / error  messages

The same case was working fine Suse version 10.2 earlier.

Now after installing RHEL 6.2 [with ROCKS cluster management tool] we are facing this issue.
Is it something related to ROCKS cluster management or something else in the OpenFOAM installation.

You suggestions/replies would be of great help

Regards
Raghu