How is this possible?

dx:~> mpirun -v -np 2 --mca btl self,sm --host dx,sx hostname
dx
sx

dx:~> netstat -i
Kernel Interface table
Iface MTU Met RX-OK RX-ERR RX-DRP RX-OVR TX-OK TX-ERR TX-DRP TX- OVR Flg eth0 1500 0 998755 0 0 0 1070323 0 0 0 BMRU eth1 1500 0 85352 0 0 0 379993 0 0 0 BMRU ib0 65520 0 204 0 0 0 155 0 5 0 BMRU lo 16436 0 1648874 0 0 0 1648874 0 0 0 LRU

I want to force an error with the first command above to make sure that my btl parameters are used correctly, but it looks like ompi runs hostname on the remote machine regardless.

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