Received: from bach.ncsa.uiuc.edu by www.jwave.vt.edu
From: "John Shalf" 
Date: Tue, 28 Jan 1997 09:48:21 -0600
To: kriz@wave.esm.vt.edu
Subject: FYI: New SGI "Octane" replacing "Impact"

Ron,
You should go to the SGI website and check out their new desktop machines
called "Octane".  They replace the Impact series machines, so this will figure
prominently in your machine recommendations for CAVE developers.

Also, below is some info on the SGI Origin 2000 I recently received from Los
Alamos.  Its a seminar there (which I am clearly going to miss... they are a
bit far away) about initial benchmarking studies on the O2k.  It indicates that
the memory subsystem on the O2k's are *much* faster than on the power-challenge
racks.  This is something that we have been finding as well.

-john

--- Forwarded mail from Harvey Wasserman 

Date: Tue, 28 Jan 1997 08:39:49 -0700
To: asci-lanl@lanl.gov
From: Harvey Wasserman 
Subject: Seminar This Friday
Cc: cm5-users@acl.lanl.gov

"Preliminary Performance Study of the SGI Origin 2000"

Olaf Lubeck, Yong Luo, Harvey Wasserman

Scientific Computing Group (CIC-19)

Friday, January 31

CTI Conference Room

1:30 PM

Abstract:

We have tested several core- and ASCI-related benchmarks
on *single processors* of the SGI Origin 2000 system and found
that the Origin is faster than single processors
of the Onyx systems by factors of 20% to 370%.
Since both systems use the identical processor
(an R10K running at 195 MHz), the sole difference in performance
comes from the improved memory systems in the Origin 2000.  In this
seminar, we explain our results.  Additionally, we found that the
MIPS R10K hardware performance counters can be very useful in
understanding a code's performance and we discuss this particularly
useful capability.

---End of forwarded mail from Harvey Wasserman