Sorry, for the late answer, 
I haven't setup Hypre, this is the problem!
Thanks!

Nur

Il giorno domenica 13 agosto 2017 18:25:14 UTC+2, Timo Heister ha scritto:
>
> Nur, 
>
> do you have PETSc configured without hypre by any chance? step-55 runs 
> correctly for me. 
>
> On Fri, Aug 11, 2017 at 7:24 AM, Nur Fadel <nura...@gmail.com 
> <javascript:>> wrote: 
> > Hi all, 
> > I have installed Deal II 8.5 and trunk versions on Daint (the CSCS 
> machine). 
> > When I run the example step-5 with PETSc I have the following error: 
> > Running using PETSc. 
> > Cycle 0: 
> >    Number of degrees of freedom: 659 (578+81) 
> > 
> +---------------------------------------------+------------+------------+ 
> > | Total wallclock time elapsed since start    |     0.354s |           
>  | 
> > |                                             |            |           
>  | 
> > | Section                         | no. calls |  wall time | % of total 
> | 
> > 
> +---------------------------------+-----------+------------+------------+ 
> > | assembly                        |         1 |      0.14s |        40% 
> | 
> > | setup                           |         1 |    0.0873s |        25% 
> | 
> > | solve                           |         1 |     0.365s |     1e+02% 
> | 
> > 
> +---------------------------------+-----------+------------+------------+ 
> > ERROR: Uncaught exception in MPI_InitFinalize on proc 0. Skipping 
> > MPI_Finalize() to avoid a deadlock. 
> > ---------------------------------------------------- 
> > Exception on processing: 
> > -------------------------------------------------------- 
> > An error occurred in line <66> of file 
> > </project/csstaff/nfadel/dealii/source/lac/petsc_precondition.cc> in 
> > function 
> >     void 
> > 
> dealii::PETScWrappers::PreconditionerBase::vmult(dealii::PETScWrappers::VectorBase&,
>  
>
> > const dealii::PETScWrappers::VectorBase&) const 
> > The violated condition was: 
> >     pc != nullptr 
> > Additional information: (none) 
> > -------------------------------------------------------- 
> > Aborting! 
> > ---------------------------------------------------- 
> > [0]PETSC ERROR: #1 PetscCommDestroy() line 214 in 
> > /project/csstaff/nfadel/petsc-vanilla/src/sys/objects/tagm.c 
> > [0]PETSC ERROR: #2 PetscHeaderDestroy_Private() line 116 in 
> > /project/csstaff/nfadel/petsc-vanilla/src/sys/objects/inherit.c 
> > 
> > on github I found the issue "step-55 PETSc fails #4150" already solved 
> but 
> > it seems not the same problem. 
> > 
> > I reproduce the crash both in serial and parallel, while trilinos works 
> > fine. 
> > 
> > The error is caught when Deal II checks if the pointer to preconditioner 
> > object's pc is a NULL. 
> > AssertThrow (pc != nullptr, StandardExceptions::ExcInvalidState ()); 
> > 
> > It happens when the minres solver does: 
> >  precondition.vmult (v,*u[1]); 
> > 
> > Do you have any hint how to fix it? 
> > 
> > 
> > Thank you in advance! 
> > Nur 
> > 
> > 
> > -- 
> > The deal.II project is located at 
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> . 
>
>
>
> -- 
> Timo Heister 
> http://www.math.clemson.edu/~heister/ 
>

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