This is an automated email from the git hooks/post-receive script. It was generated because a ref change was pushed to the repository containing the project "MPICH primary repository". The branch, master has been updated via 538f8abb47d47dd3bb39e648e771ac705b2bf274 (commit) from acb04026d4804f95263c3d9ba6a6f45ecb9c8262 (commit) Those revisions listed above that are new to this repository have not appeared on any other notification email; so we list those revisions in full, below. - Log ----------------------------------------------------------------- http://git.mpich.org/mpich.git/commitdiff/538f8abb47d47dd3bb39e648e771ac705b... commit 538f8abb47d47dd3bb39e648e771ac705b2bf274 Author: Rob Latham <[email protected]> Date: Wed Nov 11 13:45:29 2015 -0600 avoid rare but possible divide-by-zero Signed-off-by: Halim Amer <[email protected]> diff --git a/src/mpi/romio/adio/ad_lustre/ad_lustre_aggregate.c b/src/mpi/romio/adio/ad_lustre/ad_lustre_aggregate.c index cd55282..da54d71 100644 --- a/src/mpi/romio/adio/ad_lustre/ad_lustre_aggregate.c +++ b/src/mpi/romio/adio/ad_lustre/ad_lustre_aggregate.c @@ -310,8 +310,13 @@ int ADIOI_LUSTRE_Docollect(ADIO_File fd, int contig_access_count, fd->comm); MPI_Allreduce(&contig_access_count, &total_access_count, 1, MPI_INT, MPI_SUM, fd->comm); - /* estimate average req_size */ - avg_req_size = (int)(total_req_size / total_access_count); + /* avoid possible divide-by-zero) */ + if (total_access_count != 0) { + /* estimate average req_size */ + avg_req_size = (int)(total_req_size / total_access_count); + } else { + avg_req_size = 0; + } /* get hint of big_req_size */ big_req_size = fd->hints->fs_hints.lustre.coll_threshold; /* Don't perform collective I/O if there are big requests */ ----------------------------------------------------------------------- Summary of changes: src/mpi/romio/adio/ad_lustre/ad_lustre_aggregate.c | 9 +++++++-- 1 files changed, 7 insertions(+), 2 deletions(-) hooks/post-receive -- MPICH primary repository