[petsc-users] Error loading vectors from files : Too many open files.

[Mark Adams]

Petsc just failed to open this file.
Is this .dat file a PETSc binary file?
Try to run the PETSc example in
https://petsc.org/release/docs/manualpages/Sys/PetscBinaryOpen.html


On Tue, Nov 9, 2021 at 9:09 AM Magu Raam Prasaad R via petsc-users <
petsc-users at mcs.anl.gov> wrote:

> Hello all,
>
> I am getting this error message while loading vectors from files. I have
> attached the code to reproduce the error message.
>
> Steps to compile and run the code can be found in monople/README
> Machine type: WorkStation
> OS version : Ubuntu 17.04
> PETSC  version: 3.14.4
> Compiler : GNU C
> MPI: mpich
> Petsc Components: Vec
>
>
>
> [0]PETSC ERROR: --------------------- Error Message
> --------------------------------------------------------------
> [0]PETSC ERROR: Unable to open file
> [0]PETSC ERROR: Cannot open file p-00502.dat for READ: ��H�E�� ��
> [0]PETSC ERROR: See https://www.mcs.anl.gov/petsc/documentation/faq.html
> for trouble shooting.
> [0]PETSC ERROR: Petsc Release Version 3.14.4, unknown
> [0]PETSC ERROR: ./kirchhoff on a linux-gnu-c-debug named galois by ratnesh
> Tue Nov  9 15:05:43 2021
> [0]PETSC ERROR: Configure options --download-triangle --download-ctetgen
> --download-chaco --download-metis --download-parmetis --download-hdf5
> [0]PETSC ERROR: #1 PetscBinaryOpen() line 505 in
> /home/ratnesh/petsc/src/sys/fileio/sysio.c
> [0]PETSC ERROR: #2 PetscViewerFileSetUp_BinarySTDIO() line 1457 in
> /home/ratnesh/petsc/src/sys/classes/viewer/impls/binary/binv.c
> [0]PETSC ERROR: #3 PetscViewerSetUp_Binary() line 1512 in
> /home/ratnesh/petsc/src/sys/classes/viewer/impls/binary/binv.c
> [0]PETSC ERROR: #4 PetscViewerSetUp() line 328 in
> /home/ratnesh/petsc/src/sys/classes/viewer/interface/view.c
> [0]PETSC ERROR: #5 VecLoad_Binary() line 73 in
> /home/ratnesh/petsc/src/vec/vec/utils/vecio.c
> [0]PETSC ERROR: #6 VecLoad_Default() line 279 in
> /home/ratnesh/petsc/src/vec/vec/utils/vecio.c
> [0]PETSC ERROR: #7 VecLoad() line 950 in
> /home/ratnesh/petsc/src/vec/vec/interface/vector.c
> [0]PETSC ERROR: #8 ComputePressureAtEmissionTime() line 239 in
> /home/ratnesh/Desktop/kirchhoff/monopole/kirchhoff/kirchhoff.c
> [0]PETSC ERROR: #9 main() line 425 in
> /home/ratnesh/Desktop/kirchhoff/monopole/kirchhoff/kirchhoff.c
> [0]PETSC ERROR: PETSc Option Table entries:
> [0]PETSC ERROR: -vecload_block_size 1
> [0]PETSC ERROR: ----------------End of Error Message -------send entire
> error message to petsc-maint at mcs.anl.gov----------
> --------------------------------------------------------------------------
> Sorry!  You were supposed to get help about:
>     mpi-abort
> But I couldn't open the help file:
>     /usr/share/openmpi/help-mpi-api.txt: Too many open files.  Sorry!
>
> Thank you.
>
> Regards
> Magu
>
>
>
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