Hi, I have a system running openmpi programs over archlinux. I had the programs compiled and running on July when I was using the version 1.10.4 or .7 of openmpi if I remember correctly. Just recently I updated the openmpi version to 2.1.1 and tried running a compiled program and ran correctly. The problem came when I tried compiling and running it again. Using mpicc doesn't seem to give any problems, but when running the program with mpirun it gives the next message:
mpirun noticed that process rank 0 with PID 0 on node alarm exited on signal 11 (Segmentation fault). I have tried putting a printf in the first line of the main function and it doesn't reach that point, so I have assumed it must be a startup problem. I have tried running simple programs that only say "hello world" and they run correctly. What bothers me is that the same code compiled and ran correctly with an earlier version of openmpi and now it doesn't. If it helps I am running the programs with "sudo -H mpirun --allow-run-as-root -hostfile hosts -n 8 main". I need to run it with root privileges as I am combining SW with HW accelerators and I need to access some files with root permissions in order to communicate with the HW accelerators. There is no instantiation or use of those files until after running some functions in the main program, so there should be no problem or concern with that part. Thank you in advance, Alberto
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