Yes, 1.4.2 has a bug in loadbalance and the npernode options. These are corrected in an upcoming 1.4.3 release.
Meantime, you can download a pre-release (but good) snapshot from the OMPI site: http://www.open-mpi.org/nightly/v1.4/ On Jul 16, 2010, at 5:12 PM, Qiyang Hu wrote: > Hello, everyone, > > We got some "Segmentation fault" errors in running "mpiexec" with > "-loadbalance" option (details see below). However, we don't have any problem > in using "-bynode" or "-nolocal". We tried in both Intel compiler and GCC > 4.1.2. The same type of error appears. > > Here is the error message we got: > > mpiexec -n 4 --loadbalance ./a.out > > [n265:00912] *** Process received signal *** > [n265:00912] Signal: Segmentation fault (11) > [n265:00912] Signal code: Address not mapped (1) > [n265:00912] Failing at address: 0x50 > [n265:00912] [ 0] /lib64/libpthread.so.0 [0x3e0820eb10] > [n265:00912] [ 1] > /u/local/intel/11.1/openmpi/1.4.2/lib/libopen-rte.so.0(orte_util_encode_pidmap+0xcf) > [0x2b9344c3f7ff] > [n265:00912] [ 2] > /u/local/intel/11.1/openmpi/1.4.2/lib/libopen-rte.so.0(orte_odls_base_default_get_add_procs_data+0x3b8) > [0x2b9344c5f2a8] > [n265:00912] [ 3] > /u/local/intel/11.1/openmpi/1.4.2/lib/libopen-rte.so.0(orte_plm_base_launch_apps+0xd7) > [0x2b9344c70b97] > [n265:00912] [ 4] /u/local/intel/11.1/openmpi/1.4.2/lib/libopen-rte.so.0 > [0x2b9344c77171] > [n265:00912] [ 5] mpiexec [0x404c27] > [n265:00912] [ 6] mpiexec [0x403e38] > [n265:00912] [ 7] /lib64/libc.so.6(__libc_start_main+0xf4) [0x3e0761d994] > [n265:00912] [ 8] mpiexec [0x403d69] > [n265:00912] *** End of error message *** > Segmentation fault > [n96:22288] [[57019,0],3] routed:binomial: Connection to lifeline > [[57019,0],0] lost > > > Below is the info for our system: > > + OS: CentOS 5.5 > + OpenMPI 1.4.2 configuration: > ./configure --prefix=/u/local/intel/11.1/openmpi/1.4.2 \ > --with-openib=/usr --enable-static \ > CC=icc CXX=icpc F77=ifort FC=ifort --with-sge > (similar for GCC~) > > > Any ideas would be appreciated. Many thanks in advance. > > Best wishes, > Qiyang > > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users
