Hello
I am not sure I am understanding your requirements correctly, but base on what I think it is, how about this: you do an MPI_Send() from all the non-root nodes to the root node and pack all the progress related data into this send. Use a special tag for this message to make it stand out from 'regular' sends. The root node does a non-blocking receive on this tag from all the nodes that it is expecting this message from. Would that work? Durga 1% of the executables have 99% of CPU privilege! Userspace code! Unite!! Occupy the kernel!!! On Sun, Apr 24, 2016 at 7:05 AM, MM <finjulh...@gmail.com> wrote: > Hello, > > With a miniature case of 3 linux quadcore boxes, linked via 1Gbit > Ethernet, I have a UI that runs on 1 of the 3 boxes, and that is the root > of the communicator. > I have a 1-second-running function on up to 10 parameters, my parameter > space fits in the memory of the root, the space of it is N ~~ 1 million. > > I use broadcast/scatter/gather to collect the value of my function on each > of the 1million points, dividing 1million by the number of nodes (11: > rootnode has 1 core/thread assigned to the UI, 1 core/thread for its > evaluation of the function on its own part of the parameter space and 2 > other cores run non-root nodes, and the 2 other boxes all run non-root > nodes) > > the rootnode does: > 1. broadcast needed data > 2. scatter param space > 3. evaluate function locally > 4. gather results from this and all other nodes > > How would I go about having the non-root nodes send a sort of progress > status to the root node? that's used for plotting results on the root box > as soon as they are available? > > Rds, > > > > > > _______________________________________________ > users mailing list > us...@open-mpi.org > Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/users > Link to this post: > http://www.open-mpi.org/community/lists/users/2016/04/29013.php >
