Hi, I've been running with 1.6.5 for some time and am now trying out 1.8.8 (I'll get to 1.10 soon). I have found a difference in behavior and I'm wondering what is happening.
For special reasons, I have a host file which uses index values as logical names: 0 1 2 3 These are properly understood by the launcher. With 1.6.5, when I do: mpirun hostname I get 4 lines of output. However, when I do the same with 1.8.8 on a 16 cpu machine, I get 64 lines of output. If I change my hostfile to: 0 slots=1 1 slots=1 2 slots=1 3 slots=1 I get only 4 lines with 1.8.8. Can you explain why I see the behavior I do, specifically, getting the 64 lines of output? Is the interpretation of the hostfile different between 1.6.5 and 1.8.8? Are logical names without the "slots=1" (now?) treated differently than hostnames? Thanks, John
