Hi, the solution depends on the details of your code. Will all clients send their progress updates simultaneously? Are you planning for few or many nodes?
For few nodes and non-simultaneous updates you could loop on the root while receiving from MPI_ANY. Clients could send out their updates via MPI_Isend(). If you're expecting many nodes, this 1-n schema will eventually overwhelm the root node. In that case MPI_Gather() or MPI_Reduce() will perform better. But those require all nodes to participate. Things get complicated if you want non-simultaneous updates from many nodes... HTH -Andreas On 15:07 Mon 21 Oct , MM wrote: > Hello, > > I have a n-variable function optimization task that I programmed with a > scatter, each mpi process evaluates my function in part of the space, then > a reduce to get the maximum at the root process. Most wall time is spent in > the function evaluations done inside every mpi process. > > I would like to report to the root process some progress indicator, ie 40% > done so far and so on... > > What is the customary solution? > > Thanks > > MM > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users -- ========================================================== Andreas Schäfer HPC and Grid Computing Chair of Computer Science 3 Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany +49 9131 85-27910 PGP/GPG key via keyserver http://www.libgeodecomp.org ========================================================== (\___/) (+'.'+) (")_(") This is Bunny. Copy and paste Bunny into your signature to help him gain world domination!
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