I'm using the "taskset" command. You need to add something like this to the run file:
taskset --cpu-list 0-3 <mydir>/REP-15_5/bin/repserver -S<servername> \
...snip...
This example limits the SMP enabled repserver to the 1st 4 CPUs (or cores, as the case may be)
Seems to work fine for me.
Ben Slade
NCBI.NLM.NIH.gov