<s>
The	O
QCDPAX	B-Operating_System
was	O
a	O
processor	O
array	O
designed	O
and	O
built	O
jointly	O
by	O
the	O
University	O
of	O
Tsukuba	O
and	O
Anritsu	O
Corporation	O
for	O
the	O
simulation	O
of	O
the	O
lattice	O
QCD	O
.	O
</s>
<s>
QCDPAX	B-Operating_System
was	O
the	O
fifth	O
model	O
in	O
the	O
PAX	O
series	O
.	O
</s>
<s>
Motorola	O
's	O
microprocessor	O
MC68020	B-Device
(	O
25MHz	O
)	O
was	O
used	O
as	O
the	O
CPU	O
.	O
</s>
<s>
The	O
QCDPAX	B-Operating_System
was	O
followed	O
by	O
the	O
2048	O
processor	O
CP-PACS	O
with	O
a	O
speed	O
of	O
614.4	O
GFlops	O
,	O
which	O
itself	O
has	O
been	O
succeeded	O
by	O
a	O
range	O
of	O
successively	O
faster	O
computers	O
dedicated	O
to	O
computational	O
physics	O
.	O
</s>
