29 Mar
2006
29 Mar
'06
10:38 a.m.
I was just curious, for those who own them, is the KK11-A cache module
for the 11/34 worth acquiring? How much does it boost performance of
the machine, and in what areas?
29 Mar
29 Mar
11:09 a.m.
On Wed, 2006-03-29 at 09:38 -0600, Wolfe, Julian wrote:
I was just curious, for those who own them, is the
KK11-A cache module
for the 11/34 worth acquiring? How much does it boost performance of
the machine, and in what areas?
The big problem is getting the "over the top" connectors. The ones that
allow both the cache and FP are especially rare. If I had a choice, get
the FP. The "over the top" connectors are the same for the cache or the
FP. There is another set if you want both at the same time.
--
TTFN - Guy
12:04 p.m.
On Wednesday 29 March 2006 08:09, Guy Sotomayor wrote:
On Wed, 2006-03-29 at 09:38 -0600, Wolfe, Julian
wrote:
Guy is right, finding the OTT connectors is challenging - but not impossible.
I recently discovered a set after looking for several months.
I would also agree with Guy that given a choice of cache or FP, take FP.
I've done extensive benchmarks with and without cache and found that cache can
make significant performance enhancements. Here's a brief summary of my
findings of cache speed enhancement: Large FORTRAN compiles and MACRO
assemblies run on average 44% faster and large LINKs run 56% faster. Integer
benchmarks like HANOI run 57% faster and floating point benchmarks like
single precision Whetstone run 19.4% faster and double precision Whetstone
runs 16.9% faster.
BTW: I have both FP and cache in my 11/34A (11/34C ;-)
BTW2: I was surprised that cache helped performance as much as it did in my
11/34 considering that I'm using fast MOS (MS11-L) memory - and the cache was
designed as a "kicker" for much slower memory...
Cheers,
Lyle
--
Lyle Bickley
Bickley Consulting West Inc.
Mountain View, CA
http://bickleywest.com
"Black holes are where God is dividing by zero"
I was just curious, for those who own them, is
the KK11-A cache module
for the 11/34 worth acquiring? How much does it boost performance of
the machine, and in what areas?
The big problem is getting the "over the top" connectors. The ones that
allow both the cache and FP are especially rare. If I had a choice, get
the FP. The "over the top" connectors are the same for the cache or the
FP. There is another set if you want both at the same time.
3 Apr
3 Apr
3:25 a.m.
Julian,
On Wednesday 29 March 2006 07:38, Wolfe, Julian wrote:
I was just curious, for those who own them, is the
KK11-A cache module
for the 11/34 worth acquiring? How much does it boost performance of
the machine, and in what areas?
Perhaps you missed my previous comments. Here they are again. Sorry to all the
folks that've already seen them...
Cheers,
Lyle
-------------------------------------------------------------------------------
Subject: Re: Should I track down an M8268 (KK11-A)?
Date: Wednesday 29 March 2006 09:04
From: Lyle Bickley <lbickley at bickleywest.com>
To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at
classiccmp.org>
--snip--
I've done extensive benchmarks with and without cache and found that cache
can make significant performance enhancements. Here's a brief summary of my
findings of cache speed enhancement:
Large FORTRAN compiles and MACRO, assemblies run on average 44% faster
and large LINKs run 56% faster.
Integer benchmarks like HANOI run 57% faster
Floating point benchmarks like single precision Whetstone run 19.4% faster
Double precision benchmarks like Whetstone run 16.9% faster.
BTW: I have both FP and cache in my 11/34A (11/34C ;-)
BTW2: I was surprised that cache helped performance as much as it did in my
11/34 considering that I'm using fast MOS (MS11-L) memory - and the cache was
designed as a "kicker" for much slower memory...
--
Lyle Bickley
Bickley Consulting West Inc.
Mountain View, CA
http://bickleywest.com
"Black holes are where God is dividing by zero"
6666
days inactive
6671
days old
3 comments
3 participants
participants (3)
-
ggs＠shiresoft.com -
ISC277＠CLCILLINOIS.EDU -
lbickley＠bickleywest.com