[comp.parallel] searching for analytical timing models for BBN Butterfly

zyu@caip.rutgers.edu (Zhixin Yu ) (03/22/90)

I'm using a BBN Butterfly GP1000 to do some engineering calculations
and I've got some timing results.  I'm wondering whether there is a
theoretical estimate of speedup, or communication time available
for a general or specific computation model using this machine. 
Noticing a quite few BBN experts or hackers out there on the net, 
I would like to ask for help to be pointed to publications or 
anything giving analytical models of estimating (even just determining
an upper bound of) speedup or other performance characteristics for
the Butterfly architecture.

Any help will be deeply appreciated.  Response can be either posted
on comp.parallel or emailed to zyu@caip.rutgers.edu.

---Sam