12 Oct
2012
12 Oct
'12
9:23 a.m.
From: "TeoZ" <teoz at neo.rr.com>
Power supply requirements are a bit out there for home based collectors, and
what software would you run on it (I assume everything was custom per
order)?
Right, on the nameplate is shows 68 KW electronic dissipation, then you
have to
supply water chilling for a 68 KW load. Then,. you need a pretty massive
support computer to run this thing, I think the last ones were VAX
8000-series
machines. They had a stock OS, booted from the support computer, which also
provided disk, tape, graphics, etc.
So, for your typical US home service, you'd probably need a 200 KVA service,
at 120/240 V that would be 833 Amps. You'd also need a cooling tower
in your back yard that would send a cloud of vapor all over your
neighborhood.
Jon
12 Oct
12 Oct
10:43 a.m.
On 10/12/2012 12:23 PM, Jon Elson wrote:
No, you are about fifteen years off. The VAX 8000 series was
discontinued well before the design cycle for this Cray had begun.
This is a post-XMP Cray PVP system. It is a standalone computer that
uses SCSI and/or FibreChannel to connect to its directly-attached disks.
The OS is Unicos, which is UNIX. It runs directly on the machine and
you log directly into it via telnet or ssh.
For an XMP-architecture machine, everything you said would be correct,
but those machines (and the way they were run) were LONG gone before
this relatively-late-model machine was introduced.
-Dave
--
Dave McGuire, AK4HZ
New Kensington, PA
Power supply
requirements are a bit out there for home based
collectors, and what software would you run on it (I assume everything
was custom per order)?
Right, on the nameplate is shows 68 KW electronic dissipation, then you
have to
supply water chilling for a 68 KW load. Then,. you need a pretty massive
support computer to run this thing, I think the last ones were VAX
8000-series
machines. They had a stock OS, booted from the support computer, which
also
provided disk, tape, graphics, etc. 
10:51 a.m.
On 10/12/2012 1:43 PM, Dave McGuire wrote:
On 10/12/2012 12:23 PM, Jon Elson wrote:
No, you are about fifteen years off. The VAX 8000 series was
discontinued well before the design cycle for this Cray had begun.
This is a post-XMP Cray PVP system. It is a standalone computer that
uses SCSI and/or FibreChannel to connect to its directly-attached disks.
The OS is Unicos, which is UNIX. It runs directly on the machine and
you log directly into it via telnet or ssh.
For an XMP-architecture machine, everything you said would be correct,
but those machines (and the way they were run) were LONG gone before
this relatively-late-model machine was introduced.
-Dave
do you have any of the "xmp" class systems?
Power
supply requirements are a bit out there for home based
collectors, and what software would you run on it (I assume everything
was custom per order)?
Right, on the nameplate is shows 68 KW electronic dissipation, then you
have to
supply water chilling for a 68 KW load. Then,. you need a pretty massive
support computer to run this thing, I think the last ones were VAX
8000-series
machines. They had a stock OS, booted from the support computer, which
also
provided disk, tape, graphics, etc.
10:59 a.m.
On 10/12/2012 01:51 PM, steve shumaker wrote:
do you have any of the "xmp" class systems?
I do not. All of my machines are YMP-class. (spanning nearly twenty
years!)
There are very few XMP-class machines still surviving, and I believe
none are operational. The XMP->YMP transition happened a very long time
ago.
-Dave
--
Dave McGuire, AK4HZ
New Kensington, PA
4458
days inactive
4458
days old
3 comments
3 participants
participants (3)
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elson＠pico-systems.com -
mcguire＠neurotica.com -
shumaker＠att.net