Looks like the comparison to OMPI_ERROR worked by accident -- just because it happened to have a value of -1.
The *_f_to_c_index values are the return value from a call to opal_point_array_add(). This value will either be non-negative or -1. -1 indicates a failure. It's not an *_ERR_* code -- it's a -1 index value. So the comparisons should really have been to -1 in the first place. Rolf / Abhishek -- can you fix? Did this happen in other *_f_to_c_index member variable comparisons elsewhere? On May 18, 2010, at 1:25 PM, Rolf vandeVaart wrote: > I am getting SEGVs while running the IMB-MPI1 tests. I believe the > problem has to do with changes made to the group_init.c file last > night. The error occurs in the call to MPI_Comm_split. > > There were 4 changes in the file that look like this: > OLD: > if (OMPI_ERROR == new_group->grp_f_to_c_index) > > NEW: > if (OMPI_SUCCESS != new_group->grp_f_to_c_index) > > If I change it back, things work. I understand the idea of changing the > logic, but maybe that does not apply in this case? When running with > np=2, the value of new_group->grp_f_to_c_index is 4, thereby not > equaling OMPI_SUCCESS and we end up in an error condition which results > in a null pointer later on. > > Am I the only that has run into this? > > Rolf > > > _______________________________________________ > devel mailing list > de...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/devel > -- Jeff Squyres jsquy...@cisco.com For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/
