🚀 go-pugleaf

I have been experimenting with our transputers to allow faster 
execution times to be achieved over our IRIS workstations. The
personal IRISes are rated at 10 MIPS and use a MIPS CPU including the
floating point unit. The transputers are a mix of t800d and t800c chips 
(and a T414 root) running at 20 Mhz and I am lead to believe that they can 
achieve 10 MIPS. With a 10 t800 transputer array then I expect
to go at least 7 times faster than the IRISes. Well all I've
been able to get is 1.5 times faster!  I use the optimiser on
the IRIS compiler (cc -O prog.c) and am using 3L parallel C (v2.0) 
for the transputers (t8c prog.c).

Thinking that my program was at fault (parallel programming
ain't easy) I ran two similar programs on the IRIS and a t800.
And lo! The IRIS was 5 times faster. Is this expected? 
How fast are the t800's? How good is the compiler?  What am I
doing wrong?

If somebody can shed some light on this I would really appreciate it.
--
Dr. Roberto Togneri			
Dept. of EE Engineering			Phone: +61-9-380-2535	
The University of Western Australia	Fax:   +61-9-380-1065 
NEDLANDS WA 6009			Email: robert@swanee.ee.uwa.oz.au