The closest I ever came to a Cray was seeing it in the movie "Sneakers".
On Fri Nov 9 14:19 , Ed Finnell <[EMAIL PROTECTED]> sent:
>
>In a message dated 11/9/2007 12:40:24 P.M. Central Standard Time,
>[EMAIL PROTECTED] writes:
>
>Have you ever looked inside of a Cray?
>
>
>>>
>They were l
In a message dated 11/9/2007 12:40:24 P.M. Central Standard Time,
[EMAIL PROTECTED] writes:
Have you ever looked inside of a Cray?
>>
They were liquid cooled? Did hear Seymour Cray talk about delivering a nice
5 nanosecond machine only to have the software people bugger it up to a 9
na
On Fri, 09 Nov 2007 13:09:59 -0500, John Eells <[EMAIL PROTECTED]>
wrote:
>It's interesting to think about measurement in CPU cycles, too. With a
>2 GHz cycle time, two machine cycles are consumed for every 9.7" or so
>of travel through a shielded wire.
Have you ever looked inside of a Cray?
On 9 Nov 2007 08:38:45 -0800, [EMAIL PROTECTED] (Chase, John) wrote:
>> I can't remember the whole thing, but I believe that Grace
>> Hopper used to use different rope lengths to show how long,
>> or short various measurements of time were: a nano second vs.
>> a full second.
I used to have on
Chase, John wrote:
Hmmm. A nanosecond is one billionth of a second, so the "long" rope
would have to be a billion times longer that the "short" one.
Grace Hopper gave out nanoseconds in the form of a piece of wire (about
11.75 inches long).
This represented the actual distance light travel
In a message dated 11/9/2007 8:22:39 A.M. Central Standard Time,
[EMAIL PROTECTED] writes:
but I believe that Grace Hopper used
to use different rope lengths to show how long, or short various
>>
Well she used to give out nano seconds as 11.94" wrapped copper, but the
milli second was
IBM Mainframe Discussion List wrote on 11/09/2007
10:37:57 AM:
> > -Original Message-
> > From: IBM Mainframe Discussion List On Behalf Of John S. Giltner, Jr.
> >
> > [ snip ]
> >
> > I can't remember the whole thing, but I believe that Grace
> > Hopper used to use different rope len
> -Original Message-
> From: IBM Mainframe Discussion List On Behalf Of John S. Giltner, Jr.
>
> [ snip ]
>
> I can't remember the whole thing, but I believe that Grace
> Hopper used to use different rope lengths to show how long,
> or short various measurements of time were: a nano sec
all possible.
reply to comment about RPS-miss (in the vmesa-l flavor of this thread)
http://www.garlic.com/~lynn/2007s.html#5 Poster of computer hardware events?
i had been making comments over a period of yrs that disk relative
system thruput had declined by an order of magnitude (i.e. disk
Phil Smith III wrote:
(Cross-posted to IBM-VM and IBM-MAIN)
A buddy asked me:
"At a previous employer, someone had an article, poster or something (I know - real
specific - it was 15+ years ago) that tried to put the time for computer events into
perspective. It started with the quickest inst
"Phil Smith III" <[EMAIL PROTECTED]> wrote in message
news:<[EMAIL PROTECTED]>...
> (Cross-posted to IBM-VM and IBM-MAIN)
>
> A buddy asked me:
>
> "At a previous employer, someone had an article, poster or something
(I know - real specific - it was 15+ years ago) that tried to put the
time for c
In a message dated 11/8/2007 1:02:40 P.M. Central Standard Time,
[EMAIL PROTECTED] writes:
A Direct Access Storage Device read of a 4K
block, if the data is not in the DASD Subsystem's cache, would take at
least
one millisecond, which is ten to the minus three power seconds. The
d
In a message dated 11/8/2007 12:55:16 P.M. Central Standard Time,
[EMAIL PROTECTED] writes:
tried to put the time for computer events into perspective.
A 100-MIPS processor can execute 100 million "average" instructions per secon
d, so one "average" instruction takes one hundred-milliont
(Cross-posted to IBM-VM and IBM-MAIN)
A buddy asked me:
"At a previous employer, someone had an article, poster or something (I know -
real specific - it was 15+ years ago) that tried to put the time for computer
events into perspective. It started with the quickest instruction (RR) having a
b
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