John, can you run free before the first command and make sure you have all the physical and available memory you expect ?
then, after a failed mpirun -np 1 ./helloWorld can you run dmesg and look for messages from the OOM killer ? that would indicate you are running out of memory. maybe some unexpected things happen during the upgrade (new services are now enabled, process limits were changed, new kernel is way more memory hungry, swap was disabled, memory oversubscription parameters were updated, or some of your memory is no more detected) Cheers, Gilles On Friday, April 21, 2017, john jomo via users <users@lists.open-mpi.org> wrote: > Hi guys, > > I updated my ubuntu version to ubuntu 16.10 and cannot execute programs > with mpirun anymore :(. > I did not encounter this problem with ubuntu 16.04 and would really > appreciate some help. > > I am running ubuntu 16.10 with the kernel version 4.8.0-46-generic on a > Lenovo y50-70 laptop with the current version of openmpi available via > apt-get libopenmpi1.10 openmpi-dev openmpi-bin > > my code compiles and links perfectly, I only get trouble when trying to > launch with mpirun. I can even run a simple hello world mpi code. > > *running: mpirun -np 2 ./helloWord:* > When I run mpirun -np 2 ./progname my program does not even launch. The > terminal remains blank and I cannot even kill the processes in htop with > kill PID or kill -9 PID. Rebooting or shutting down ubuntu via the shutdown > button on the ubuntu desktop has no effect and I have to manually shutdown > by holing down the power button. > > *running mpirun -np 1 hostname:* > It works on the first run but subsequent runs are killed immediately. The > output looks something like this > > $ mpirun -np 1 hostname > Killed > > > Has anyone experienced something like this before? > > Thanks in advance > > John. > >
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