[petsc-users] PETSc Binary format to Matrix Market

[Barry Smith]

On Jul 23, 2014, at 2:53 PM, Qiyue Lu <qiyuelu1 at gmail.com> wrote:

> Dear All:
> 
> My collaborators sent me some PETSc binary format files(matrix, RHS) with an convertor code which converts these binary file to Matrix Market. They did tests on their machine and it works.
> 
> However, when I compile this convertor code and running it with their PETSc binary format matrix file, I got a message like:
> [0]PETSC ERROR: Unexpected data in file
> [0]PETSC ERROR: not matrix object
> 
> 
> Because there is no error in convertor code compilation and we are using the same version of PETSc, I am wondering, Is this due to 'binary format compatible problem', the PETSc binary matrix file is hardware-platform dependent? 

   It is suppose to be binary compatible on all machines. 

   But you need the same PETSc numerical precision single, double, __float128, and the same PETSc index size 32 bit or 64 bit and the same real or complex  Are both PETSc’s configured the same way?


   Barry

> 
> Thanks
> 
> Qiyue Lu