On 02/06/13 04:29, Siegmar Gross wrote:
thank you very much for your answer. I have compiled your program and get different behaviours for openmpi-1.6.4rc3 and openmpi-1.9. I get the following output for openmpi-1.9 (different outputs !!!). sunpc1 rankfiles 104 mpirun --report-bindings --rankfile myrankfile ./a.out [sunpc1:26554] MCW rank 0 bound to socket 0[core 0[hwt 0]], socket 0[core 1[hwt 0]]: [B/B][./.] unbound sunpc1 rankfiles 105 mpirun --report-bindings --rankfile myrankfile_0 ./a.out [sunpc1:26557] MCW rank 0 bound to socket 0[core 0[hwt 0]]: [B/.][./.] bind to 0
I think what's happening is that although you specified "0:0" or "0:1" in the rankfile, the string "0,0" or "0,1" is getting passed in (at least in the runs I looked at). That colon became a comma. So, it's just by accident that myrankfile_0 is working out all right.
Could someone who knows the code better than I do help me narrow this down? E.g., where is the rankfile parsed? For what it's worth, by the time mpirun reaches orte_odls_base_default_get_add_procs_data(), orte_job_data already contains the corrupted cpu_bitmap string.
