[petsc-users] Problem in loading Matrix Market format

[Matthew Knepley]

It definitely should not be there under 'datafiles'. We should put it in an
example, as Junchao graciously agreed to do.

  Thanks,

    Matt

On Tue, Feb 12, 2019 at 11:15 AM Zhang, Hong <hzhang at mcs.anl.gov> wrote:

> We have /home/petsc/datafiles/matrices/MtxMarket/mm2petsc.c
> Hong
>
> On Tue, Feb 12, 2019 at 9:52 AM Zhang, Junchao via petsc-users <
> petsc-users at mcs.anl.gov> wrote:
>
>> Sure.
>> --Junchao Zhang
>>
>>
>> On Tue, Feb 12, 2019 at 9:47 AM Matthew Knepley <knepley at gmail.com>
>> wrote:
>>
>>> 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/>
>>>
>>

-- 
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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