<s>
ASCI	B-Operating_System
White	I-Operating_System
was	O
a	O
supercomputer	B-Architecture
at	O
the	O
Lawrence	O
Livermore	O
National	O
Laboratory	O
in	O
California	O
,	O
which	O
was	O
briefly	O
the	O
fastest	B-Operating_System
supercomputer	I-Operating_System
in	O
the	O
world	O
.	O
</s>
<s>
It	O
was	O
a	O
computer	B-Architecture
cluster	I-Architecture
based	O
on	O
IBM	O
's	O
commercial	O
RS/6000	B-Operating_System
SP	I-Operating_System
computer	O
.	O
</s>
<s>
512	O
nodes	O
were	O
interconnected	O
for	O
ASCI	B-Operating_System
White	I-Operating_System
,	O
with	O
each	O
node	O
containing	O
sixteen	O
375MHz	O
IBM	O
POWER3-II	B-General_Concept
processors	O
.	O
</s>
<s>
In	O
total	O
,	O
the	O
ASCI	B-Operating_System
White	I-Operating_System
had	O
8,192	O
processors	O
,	O
6terabytes	O
(	O
TB	O
)	O
of	O
memory	O
,	O
and	O
160TB	O
of	O
disk	O
storage	O
.	O
</s>
<s>
The	O
system	O
ran	O
IBM	O
's	O
AIX	B-Application
operating	I-Application
system	I-Application
.	O
</s>
<s>
ASCI	B-Operating_System
White	I-Operating_System
was	O
made	O
up	O
of	O
three	O
individual	O
systems	O
,	O
the	O
512-node	O
White	O
,	O
the	O
28-node	O
Ice	O
and	O
the	O
68-node	O
Frost	O
.	O
</s>
<s>
Its	O
peak	O
performance	O
of	O
12.3TFLOPS	O
was	O
not	O
achieved	O
in	O
the	O
widely	O
accepted	O
LINPACK	B-Application
tests	O
.	O
</s>
<s>
It	O
was	O
built	O
as	O
stage	O
three	O
of	O
the	O
Accelerated	B-General_Concept
Strategic	I-General_Concept
Computing	I-General_Concept
Initiative	I-General_Concept
(	O
ASCI	O
)	O
started	O
by	O
the	O
U.S.	O
Department	O
of	O
Energy	O
and	O
the	O
National	O
Nuclear	O
Security	O
Administration	O
to	O
build	O
a	O
simulator	O
to	O
replace	O
live	O
WMD	O
testing	O
following	O
the	O
moratorium	O
on	O
testing	O
started	O
by	O
President	O
George	O
H	O
.	O
W	O
.	O
Bush	O
in	O
1992	O
and	O
extended	O
by	O
Bill	O
Clinton	O
in	O
1993	O
.	O
</s>
