Binary Matrix read problem

[Barry Smith]

    If you are using ./configure with --with-64-bit-indices this could  
happen since Matlab has its ints as 32 bit. To load the matrix from  
Matlab you need
to not using --with-64-bit-indices with configure.

    This could also happen if you built PETSc with complex numbers. It  
can only read binary files from Matlab with real numbers.

    Barry

On Oct 9, 2009, at 2:19 PM, Umut Tabak wrote:

> Dear all,
>
> I upgraded to petsc-3.0.0-p8 a couple of minutes ago, but I had a  
> problem with reading binary matrices written from matlab. I get
>
> [0]PETSC ERROR: Read from file failed!
> [0]PETSC ERROR: Read past end of file!
>
> I have a 64 bit system, did I miss sth in the configuration, I  
> checked the installation page again, but could not see the reason of  
> the problem. My codes worked fine before with patch level 4. In ddd  
> I get the error from MatLoad below:
>
> ierr = PetscViewerBinaryOpen(PETSC_COMM_WORLD, "K.bin",  
> FILE_MODE_READ, &view );  CHKERRQ(ierr);
> ierr = MatLoad(view, MATSEQAIJ, &K ); CHKERRQ(ierr);
>
> (as expected).
>
> Thanks for the pointers in advance.
> Umut