On 02/03/2014 07:29 PM, Orion Poplawski wrote:

We're starting to do the Fedora EPEL builds for EPEL7. I'm building hdf5 1.8.12 with:

mpich-3.0.4-4.el7.x86_64 gcc-4.8.2-3.el7.x86_64

The following test hangs here:

$ mpirun -np 4 ./t_cache =================================== Parallel metadata cache tests mpi_size = 4 express_test = 1 =================================== *** Hint *** You can use environment variable HDF5_PARAPREFIX to run parallel test files in a different directory or to add file type prefix. E.g., HDF5_PARAPREFIX=pfs:/PFS/user/me export HDF5_PARAPREFIX *** End of Hint *** 0:setup_rand(): seed = 138071. 3:setup_rand(): seed = 149196. 2:setup_rand(): seed = 160135. 1:setup_rand(): seed = 180134. Testing server smoke check PASSED Testing smoke check #1 -- process 0 only md write strategy

This turned out to be triggered when running oversubscribed. Reducing the number of mpi processes to equal or less than the number of cores made this particular hang go away. However, I'm still seeing a hang on our Fedora builders in a different test: make[4]: Entering directory `/builddir/build/BUILD/hdf5-1.8.12/mpich/testpar' ============================ Testing t_mpi Full log: http://koji.fedoraproject.org/koji/getfile?taskID=6492001&name=build.log Unfortunately I'm not able to reproduce this on my own machines so I'm at a loss here. -- Orion Poplawski Technical Manager 303-415-9701 x222 NWRA, Boulder/CoRA Office FAX: 303-415-9702 3380 Mitchell Lane [email protected] Boulder, CO 80301 http://www.nwra.com