> Am 10.08.2018 um 17:24 schrieb Diego Avesani <diego.aves...@gmail.com>: > > Dear all, > I have probably understood. > The trick is to use a real vector and to memorize also the rank.
Yes, I thought of this: https://www.mpi-forum.org/docs/mpi-1.1/mpi-11-html/node79.html -- Reuti > Have I understood correctly? > thanks > > Diego > > > On 10 August 2018 at 17:19, Diego Avesani <diego.aves...@gmail.com> wrote: > Deal all, > I do not understand how MPI_MINLOC works. it seem locate the maximum in a > vector and not the CPU to which the valur belongs to. > > @ray: and if two has the same value? > > thanks > > > Diego > > > On 10 August 2018 at 17:03, Ray Sheppard <rshep...@iu.edu> wrote: > As a dumb scientist, I would just bcast the value I get back to the group and > ask whoever owns it to kindly reply back with its rank. > Ray > > > On 8/10/2018 10:49 AM, Reuti wrote: > Hi, > > Am 10.08.2018 um 16:39 schrieb Diego Avesani <diego.aves...@gmail.com>: > > Dear all, > > I have a problem: > In my parallel program each CPU compute a value, let's say eff. > > First of all, I would like to know the maximum value. This for me is quite > simple, > I apply the following: > > CALL MPI_ALLREDUCE(eff, effmaxWorld, 1, MPI_DOUBLE_PRECISION, MPI_MAX, > MPI_MASTER_COMM, MPIworld%iErr) > Would MPI_MAXLOC be sufficient? > > -- Reuti > > > However, I would like also to know to which CPU that value belongs. Is it > possible? > > I have set-up a strange procedure but it works only when all the CPUs has > different values but fails when two of then has the same eff value. > > Is there any intrinsic MPI procedure? > in anternative, > do you have some idea? > > really, really thanks. > Diego > > > Diego > > _______________________________________________ > users mailing list > users@lists.open-mpi.org > https://lists.open-mpi.org/mailman/listinfo/users > _______________________________________________ > users mailing list > users@lists.open-mpi.org > https://lists.open-mpi.org/mailman/listinfo/users > > _______________________________________________ > users mailing list > users@lists.open-mpi.org > https://lists.open-mpi.org/mailman/listinfo/users > > > _______________________________________________ > users mailing list > users@lists.open-mpi.org > https://lists.open-mpi.org/mailman/listinfo/users _______________________________________________ users mailing list users@lists.open-mpi.org https://lists.open-mpi.org/mailman/listinfo/users
