Two topics are treated in this Quarterly Technical Report. First, a model for the contention in the Butterfly TM Switch is presented and discussed. Second, the results of measurements of contention using a 16-processor Butterfly machine are presented. These results substantiate the switch model, and indicate that the Butterfly Switch performs very well. The efforts reported here were done in preparation for the tests to be conducted in the 128-processor Butterfly Test bed in the next quarter.
