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| Subject: |
NERSC's IBM SP Phase II Status |
| Author: |
Francesca Verdier <fverdier_at_lbl.gov> |
| Date: |
2001-01-19 11:39:37 |
|
NERSC's IBM SP Phase II computer arrived at Berkeley Lab's Oakland
Scientific Facility during the first week of January, 2001. Its name is
seaborg.nersc.gov. The size and speed of the new system (a theoretical
peak
speed of 3.75 teraflops) would place it in the number five spot on the
current list
of the world's Top 500 supercomputers. Slots one through four are
occupied by
ASCI machines at DOE's three defense labs.
seaborg consists of 158 IBM Nighthawk II 375 MHz 16-way SMP nodes with a
Colony switch that allows 16 MPI tasks per node. 134 nodes are for
parallel
batch computation, 2 for interactive use, and 4 spare nodes will be
available for
batch work when not needed as spares. These 140 nodes will have 12 GB of
memory each. The 16 GPFS nodes and 2 network nodes each have 8 GB of
memory. seaborg currently has 10 TB of disk; another 10 TB will be added
after
the Phase 1 system is returned to IBM.
After facility installation, and system configuration, NERSC will begin
system
testing and evaluation, which includes more than 150 performance,
function and
reliability tests. NERSC expects to be able to add a limited number of
early test
users during the latter parts of this testing.
The phase I system, gseaborg, will be available throughout the phase II
acceptance. After seaborg is accepted the 10 TB of disk on gseaborg will
be
moved to seaborg, and gseaborg will be decommissioned. We will announce
transition plans between the two systems at a later time.
Progress and additional information will posted throughout the test
period at:
http://hpcf.nersc.gov/computers/SP/phase2.status.html
--
Francesca Verdier email: fverdier@lbl.gov
Group Leader, NERSC User Services phone: (510) 486-7193
Lawrence Berkeley Lab fax: (510) 486-4004
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