17 Apr
2005
17 Apr
'05
10:16 p.m.
On Sunday 17 April 2005 22:00, you wrote:
snipe
Lyle wrote:
McNamara),
--snip--
> I expected an 11/70 to be instruction for
instruction faster - but
> add all the cache and complexity - maybe the 55 with bipolar ~was~
faster?
How about
compared to a 11/70 with a PEP70 instead of factory memory
and cache?
Isn't a 55 just a 45 with bipolar instead of core? or was that a 50?
Read "Computer Engineering" (Gorden Bell, J. Craig Mudge, John E. Copyright 1978 by Digital Equipment Corporation
Page 408
--------
Model Basic Instructions Floating Point
Inst. per second* Inst. per second
-------------------------------------------
11/70 36 671
11/55 41 725
* Relative to 11/03
No brainer - the 11/55 wins hands down.
sigh - I haven't memorized the DEC sacred texts yet;) no hardcopy, only
pdf... Running code withing the cache should have beaten the
55!
I'll stick with Gorden Bell.... :-)
Lyle
--
Lyle Bickley
Bickley Consulting West Inc.
http://bickleywest.com
"Black holes are where God is dividing by zero"