Ground Rules :

 Server from 100-400 MIPS
 160 MegaBytes/sec for IO
 FCS 1Q91
 
 

I. DynaBus versus MBus

2. Connection between processors

3. Processor selection

4. Evolution of the family

5. Cache selection SC versus CMT

 

· Because Maxiray Module has a First level cache , it can be used only on a One bus system or
it needs a Second level cache as Connection Point.

· Because Second level cache schedule is too long, we cannot use the Maxiray Module as it is for doing a high performance server (> 120 MIPS) for 1Q91

· So we have to use the Processor alone and the Connection Point has to be a First Level Cache

· Choices are :
 SunRay  390 Mips/24 procs
 MaxiRay Harvard 405 Mips/21 procs
 MaxiRay non Harvard 
 
 These solutions suppose ECL or Low-level
 CMOS on the processor interface