On Wed, Nov 26, 2014 at 9:55 AM, Chris Richardson <[email protected]> wrote:
> On 25/11/2014 21:48, Johan Hake wrote: > >> Hello! >> >> I just pushed some fixes to the jit interface of DOLFIN. Now one can >> jit on different mpi groups. Previously jiting was only done on rank 1 >> of the mpi_comm_world. Now it is done on rank 1 of any passed group >> communicator. >> > > Maybe I'm missing something here, but could you explain what is the > advantage of doing it this way? > If you have several processes JITing the same code, where do they save it > in the filesystem? > If they all share the same filesystem, surely this will take up more > resources, as more processes > try to write at the same time? > That is just an unintended (necessary?) side effect. Or is it intended for cases where the Expression is different on different > MPI groups? Yes. Johan > > > Chris >
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