Dear All I have just been trying out SCALI MPI with Valgrind and have observed that when running across multiple nodes the process seem to end up spinning in MPI_Init. Smaller problems running with shared memory appear fine.
The configuration is: 8 Nodes connected by Infiniband 2 Sockets/Node with 1 MPI process each Plenty of spare memory No competing processes memcheck is at 100% My hunch is there is weird packet dropping effect but hoping someone out there has an idea. Was hoping I could tell Valgrind to skip instrumenting libmpi.so? Either I didnt read the manual well enough or it breaks a fundamental principle (which I suspect it might) Thanks Dominic Schlumberger Abingdon Technology Center Direct Tel: +44 (0) 1235 857869 Switchboard Tel: +44 (0) 1235 559595 ---------------------------------------------------------------------------- -------------------------------------------------- Registered Name: Schlumberger Oilfield UK PLC Registered Office: 8th Floor, South Quay Plaza 2, 183 Marsh Wall, London. E14 9SH Registered in England No. 4157867 ---------------------------------------------------------------------------- -------------------------------------------------- ------------------------------------------------------------------------------ _______________________________________________ Valgrind-users mailing list Valgrind-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/valgrind-users
