<s>
Eris	B-Algorithm
is	O
a	O
computer	O
simulation	O
of	O
the	O
Milky	O
Way	O
galaxy	O
's	O
physics	O
.	O
</s>
<s>
The	O
simulation	O
project	O
was	O
undertaken	O
at	O
the	O
NASA	O
Advanced	O
Supercomputer	B-Architecture
Division	O
's	O
Pleiades	B-Device
and	O
the	O
Swiss	O
National	O
Supercomputing	B-Architecture
Centre	O
for	O
nearly	O
eight	O
months	O
,	O
which	O
would	O
have	O
otherwise	O
taken	O
570	O
years	O
in	O
a	O
personal	B-Device
computer	I-Device
.	O
</s>
<s>
The	O
Eris	B-Algorithm
simulation	O
is	O
the	O
first	O
successful	O
detailed	O
simulation	O
of	O
a	O
Milky	O
Way	O
like	O
galaxy	O
.	O
</s>
<s>
The	O
simulation	O
was	O
undertaken	O
using	O
supercomputers	B-Architecture
which	O
include	O
the	O
Pleiades	B-Device
supercomputer	I-Device
,	O
the	O
Swiss	O
National	O
Supercomputing	B-Architecture
Centre	O
and	O
the	O
supercomputers	B-Architecture
at	O
the	O
University	O
of	O
California	O
,	O
Santa	O
Cruz	O
.	O
</s>
<s>
The	O
simulation	O
used	O
1.4	O
million	O
processor-hours	O
of	O
the	O
Pleiades	B-Device
supercomputer	I-Device
.	O
</s>
<s>
The	O
Eris	B-Algorithm
simulation	O
is	O
the	O
first	O
successful	O
simulation	O
to	O
have	O
resolved	O
the	O
high-density	O
gas	O
clouds	O
where	O
stars	O
formed	O
.	O
</s>
