[petsc-users] On what condition is useful MPI-based solution?

Jose E. Roman jroman at dsic.upv.es
Wed Jan 13 03:43:35 CST 2010

On 13/01/2010, Takuya Sekikawa wrote:

> I have a few more questions.
> Just in case I want to ask.
> [Q1]
> In general, like ex1, Don't we need any change to source code to
> run program with MPI-based system?
> in other words, to run SLEPc-based program in MPI-based system,
> all I need to do is changing ./configure option (--with-mpi=1, etc)
> and re-compiling (without changing source) ?

No change in the program. Just enable MPI in the installation.

> [Q2]
> Can I use intel-compiler (icc/icpc) on MPI-based SLEPc application?
> (because intel compiler is really fast so I want to use it on MPI- 
> based
> system too)
> Takuya

Yes, no problem.

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