The idea is to divide the machine ads between multiple negotiator daemons, which can do matchmaking in parallel. The negotiators communicate with all schedds in the pool, but consider only a subset of the machine ads.
 
+The division of machines is by defining an expression for each negotiator that evaluates to true for machines it should manage. You need to write these expressions carefully so that all machines will match to one and only one negotiator.
+
+One drawback to this configuration is that each negotiator does its own accounting, so fair-share and quotas operate independently for each portion of the pool.
+
 {code}
 # Setup alternate negotiators so we can partition the pool.
 # We run one negotiator for T2_US_*, one for T1_*/T2_CH_CERN, and one for everyone else.