[petsc-users] Problem running ex50 after compilation

[Srinivas Kirthy K]

Hi,

I'm new to PETSc.

I was able to compile ex50.c using:
*cd petsc/src/ksp/ksp/tutorials*
*make ex50*

When I run: *mpiexec -n 1 ./ex50  -da_grid_x 4 -da_grid_y 4 -mat_view*

I get the error message in *PETSC_mpiexec_error.txt *(attached)

I've defined these in the ~/.bashrc:

*export PETSC_DIR=$HOME/petsc # added on 31/01/2026 to define PETSC
locationexport PETSC_ARCH=arch-linux-c-debug*

Can you help me fix this?

I've attached the *configure.log* file as well.

Thanks in advance.

-- 
Regards,

Srinivas Kirthy K
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[unset]: launcher not compatible with PMI1 client
Fatal error in internal_Init_thread: Other MPI error, error stack:
internal_Init_thread(71): MPI_Init_thread(argc=0x7fff90afe3dc, argv=0x7fff90afe3d0, required=1, provided=0x7fff90afdf7c) failed
MPII_Init_thread(203)...:
MPIR_pmi_init(150)......:
pmi1_init(14)...........: PMI_Init returned -1
[unset]: PMIU_write error; fd=-1 buf=:cmd=abort exitcode=807004687 message=abort
:
system msg for write_line failure : Bad file descriptor
--------------------------------------------------------------------------
Primary job  terminated normally, but 1 process returned
a non-zero exit code. Per user-direction, the job has been aborted.
--------------------------------------------------------------------------
--------------------------------------------------------------------------
mpiexec detected that one or more processes exited with non-zero status, thus causing
the job to be terminated. The first process to do so was:

  Process name: [[29885,1],0]
  Exit code:    15
--------------------------------------------------------------------------
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