IBM 6000 vs HP 9000 series 700

[John D. McCalpin]

>>>>> On 27 Jun 91 19:42:24 GMT, fangchin at leland.Stanford.EDU (Chin Fang) said:

Chin> This leads me to... a 40Mhz i860 offers 80 MFLOPs.  Can IBM
Chin> Austin people design a addon board to utilize i860 for us?
Chin> After all, IBM owns part of Intel and if RISC 6000 lines are
Chin> designed for technical users, I would say the more MFLOPS the
Chin> bigger your market share will be :-) Now this is THE MOTIVATION
Chin> for IBM :-)

A 40 MHz RISC-System/6000 can also do 80 MFLOPS, and IBM seems to have
done a much better job at writing good compilers for their CPU than
Intel has.

I have important pieces of my fluid dynamics codes that run at over 25
MFLOPS on the Model 320 and over 60 MFLOPS on a Model 550.
Unfortunately not all of the code runs that fast yet --- there are
still memory bandwidth bottlenecks to deal with....

If someone wants to build a "Real (tm)" number-crunching machine, then
it is going to have to support 2 64-bit loads, 1 64-bit store, 1
64-bit FP add, 1 64-bit FP multiply, and 1 logical operation/branch
per cycle.  Right now if you want one of those, you will have to call
Cray Research....
--
John D. McCalpin			mccalpin at perelandra.cms.udel.edu
Assistant Professor			mccalpin at brahms.udel.edu
College of Marine Studies, U. Del.	J.MCCALPIN/OMNET