George -- Do we need to file a bug about this?
On Jun 7, 2011, at 1:57 AM, George Bosilca wrote: > Frederic, > > Attached you will find an example that is supposed to work. The main > difference with your code is on T3, T4 where you have inversed the local and > remote comm. As depicted on the picture attached below, during the 3th step > you will create the intercomm between ab and c (no overlap) using ac as a > bridge communicator (here the two roots, a and c, can exchange messages). > > Based on the MPI 2.2 standard, especially on the paragraph in PS:, the > attached code should have been working. Unfortunately, I couldn't run it > successfully neither with Open MPI trunk nor MPICH2 1.4rc1. > > george. > > PS: Here is what the MPI standard states about the MPI_Intercomm_create: >> The function MPI_INTERCOMM_CREATE can be used to create an >> inter-communicator from two existing intra-communicators, in the following >> situation: At least one selected member from each group (the “group leader”) >> has the ability to communicate with the selected member from the other >> group; that is, a “peer” communicator exists to which both leaders belong, >> and each leader knows the rank of the other leader in this peer >> communicator. Furthermore, members of each group know the rank of their >> leader. > > <intercomm_create.c><Mail Attachment.txt><PastedGraphic-2.pdf><Mail > Attachment.txt><Mail Attachment.txt> -- Jeff Squyres jsquy...@cisco.com For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/
