[petsc-users] Problem in loading Matrix Market format

[Matthew Knepley]

Hi Junchao,

Could you fix the MM example in PETSc to have this full support? That way
we will always have it.

 Thanks,

    Matt

On Tue, Feb 12, 2019 at 10:27 AM Zhang, Junchao via petsc-users <
petsc-users at mcs.anl.gov> wrote:

> Eda,
>   I have a code that can read in Matrix Market and write out PETSc binary
> files.  Usage:  mpirun -n 1 ./mm2petsc -fin <infile> -fout <outfile>.  You
> can have a try.
> --Junchao Zhang
>
>
> On Tue, Feb 12, 2019 at 1:50 AM Eda Oktay via petsc-users <
> petsc-users at mcs.anl.gov> wrote:
>
>> Hello,
>>
>> I am trying to load matrix in Matrix Market format. I found an example on
>> mat file  (ex78) whih can be tested by using .dat file. Since .dat file and
>> .mtx file are similar  in structure (specially afiro_A.dat file is similar
>> to amesos2_test_mat0.mtx since they both have 3 columns and the columns
>> represent the same properties), I tried to run ex78 by using
>> amesos2_test_mat0.mtx instead of afiro_A.dat. However, I got the error
>> "Badly formatted input file". Here is the full error message:
>>
>> [0]PETSC ERROR: --------------------- Error Message
>> --------------------------------------------------------------
>> [0]PETSC ERROR: Badly formatted input file
>>
>> [0]PETSC ERROR: See http://www.mcs.anl.gov/petsc/documentation/faq.html
>> for trouble shooting.
>> [0]PETSC ERROR: Petsc Release Version 3.10.3, Dec, 18, 2018
>> [0]PETSC ERROR: ./ex78 on a arch-linux2-c-debug named
>> 7330.wls.metu.edu.tr by edaoktay Tue Feb 12 10:47:58 2019
>> [0]PETSC ERROR: Configure options --with-cc=gcc --with-cxx=g++
>> --with-fc=gfortran --with-cxx-dialect=C++11 --download-openblas
>> --download-metis --download-parmetis --download-superlu_dist
>> --download-slepc --download-mpich
>> [0]PETSC ERROR: #1 main() line 73 in
>> /home/edaoktay/petsc-3.10.3/src/mat/examples/tests/ex78.c
>> [0]PETSC ERROR: PETSc Option Table entries:
>> [0]PETSC ERROR: -Ain
>> /home/edaoktay/petsc-3.10.3/share/petsc/datafiles/matrices/amesos2_test_mat0.mtx
>> [0]PETSC ERROR: ----------------End of Error Message -------send entire
>> error message to petsc-maint at mcs.anl.gov----------
>> application called MPI_Abort(MPI_COMM_WORLD, 1) - process 0
>> [unset]: write_line error; fd=-1 buf=:cmd=abort exitcode=1
>> :
>> system msg for write_line failure : Bad file descriptor
>>
>> I know there is also an example (ex72) for Matrix Market format but in
>> description, it is only proper for symmmetric and lower triangle, so I
>> decided to use ex78.
>>
>> Best regards,
>>
>> Eda
>>
>

-- 
What most experimenters take for granted before they begin their
experiments is infinitely more interesting than any results to which their
experiments lead.
-- Norbert Wiener

https://www.cse.buffalo.edu/~knepley/ <http://www.cse.buffalo.edu/~knepley/>
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