<s>
Rossmann	B-Device
is	O
a	O
supercomputer	B-Architecture
at	O
Purdue	O
University	O
that	O
went	O
into	O
production	O
September	O
1	O
,	O
2010	O
.	O
</s>
<s>
The	O
high-performance	B-Architecture
computing	I-Architecture
cluster	B-Architecture
is	O
operated	O
by	O
Information	O
Technology	O
at	O
Purdue	O
(	O
ITaP	O
)	O
,	O
the	O
university	O
's	O
central	O
information	O
technology	O
organization	O
.	O
</s>
<s>
ITaP	O
also	O
operates	O
clusters	O
named	O
Steele	B-Device
built	O
in	O
2008	O
,	O
Coates	B-Device
built	O
in	O
2009	O
,	O
Hansen	O
built	O
in	O
the	O
summer	O
of	O
2011	O
and	O
Carter	B-Device
built	O
in	O
the	O
fall	O
of	O
2012	O
in	O
partnership	O
with	O
Intel	O
.	O
</s>
<s>
Rossmann	B-Device
ranked	O
126	O
on	O
the	O
November	O
2010	O
TOP500	B-Operating_System
list	O
.	O
</s>
<s>
The	O
Rossmann	B-Device
cluster	B-Architecture
consists	O
of	O
HP	B-Device
ProLiant	I-Device
DL165	O
G7	O
compute	O
nodes	B-Protocol
with	O
64-bit	O
,	O
dual	O
12-core	O
AMD	B-General_Concept
Opteron	I-General_Concept
6172	O
processors	O
(	O
24	O
cores	O
per	O
node	O
)	O
,	O
either	O
48	O
or	O
96	O
GB	O
of	O
memory	O
and	O
250	O
GB	O
of	O
local	O
disk	O
for	O
system	O
software	O
and	O
scratch	O
storage	O
.	O
</s>
<s>
Nodes	B-Protocol
with	O
192	O
GB	O
of	O
memory	O
and	O
either	O
1	O
terabyte	O
or	O
2	O
TB	O
of	O
local	O
scratch	O
disk	O
also	O
are	O
available	O
.	O
</s>
<s>
Rossmann	B-Device
consists	O
of	O
five	O
logical	O
sub-clusters	O
,	O
each	O
with	O
a	O
different	O
memory	O
and	O
storage	O
configuration	O
.	O
</s>
<s>
All	O
nodes	B-Protocol
have	O
10	O
Gigabit	O
Ethernet	O
interconnects	O
.	O
</s>
<s>
Rossmann	B-Device
nodes	B-Protocol
run	O
Red	O
Hat	O
Enterprise	O
Linux	O
5.5	O
(	O
RHEL5	O
)	O
and	O
use	O
portable	B-Application
batch	I-Application
system	I-Application
Professional	O
10	O
(	O
PBSPro	B-Application
10	O
)	O
for	O
resource	O
and	O
job	O
management	O
.	O
</s>
<s>
The	O
Rossmann	B-Device
cluster	B-Architecture
also	O
has	O
compilers	O
and	O
scientific	O
programming	O
libraries	O
installed	O
.	O
</s>
<s>
The	O
Rossmann	B-Device
supercomputer	B-Architecture
and	O
Purdue	O
's	O
other	O
clusters	O
are	O
part	O
of	O
the	O
Purdue	O
Community	O
Cluster	B-Architecture
Program	O
,	O
a	O
partnership	O
between	O
ITaP	O
and	O
Purdue	O
faculty	O
.	O
</s>
<s>
In	O
Purdue	O
's	O
program	O
,	O
a	O
"	O
community	O
"	O
cluster	B-Architecture
is	O
funded	O
by	O
hardware	O
money	O
from	O
grants	O
,	O
faculty	O
startup	O
packages	O
,	O
institutional	O
funds	O
and	O
other	O
sources	O
.	O
</s>
<s>
Each	O
faculty	O
partner	O
always	O
has	O
ready	O
access	O
to	O
the	O
capacity	O
he	O
or	O
she	O
purchases	O
and	O
potentially	O
to	O
more	O
computing	O
power	O
when	O
the	O
nodes	B-Protocol
of	O
other	O
investors	O
are	O
idle	O
.	O
</s>
<s>
Unused	O
,	O
or	O
opportunistic	O
,	O
cycles	O
from	O
Rossmann	B-Device
are	O
made	O
available	O
to	O
the	O
National	O
Science	O
Foundation	O
's	O
Extreme	O
Science	O
and	O
Engineering	O
Discovery	O
Environment	O
(	O
XSEDE	O
)	O
system	O
and	O
the	O
Open	O
Science	O
Grid	O
.	O
</s>
<s>
The	O
Purdue	O
departments	O
and	O
schools	O
by	O
which	O
Rossmann	B-Device
and	O
Purdue	O
's	O
clusters	O
are	O
used	O
vary	O
broadly	O
,	O
including	O
Aeronautics	O
and	O
Astronautics	O
,	O
Agriculture	O
,	O
Agronomy	O
,	O
Biology	O
,	O
Chemical	O
Engineering	O
,	O
Chemistry	O
,	O
Civil	O
Engineering	O
,	O
Communications	O
,	O
Computer	O
and	O
Information	O
Technology	O
,	O
Computer	O
Science	O
,	O
Earth	O
,	O
Atmospheric	O
and	O
Planetary	O
Sciences	O
,	O
Electrical	O
Engineering	O
,	O
Electrical	O
and	O
Computer	O
Engineering	O
,	O
Electrical	O
and	O
Computer	O
Engineering	O
Technology	O
,	O
Industrial	O
Engineering	O
,	O
Materials	O
Engineering	O
,	O
Mathematics	O
,	O
Mechanical	O
Engineering	O
,	O
Medicinal	O
Chemistry	O
and	O
Molecular	O
Pharmacology	O
,	O
Physics	O
,	O
the	O
Purdue	O
Terrestrial	O
Observatory	O
and	O
Statistics	O
,	O
among	O
others	O
.	O
</s>
<s>
Unused	O
,	O
or	O
opportunistic	O
,	O
cycles	O
from	O
Rossmann	B-Device
are	O
made	O
available	O
to	O
XSEDE	O
and	O
the	O
Open	O
Science	O
Grid	O
using	O
Condor	B-Operating_System
software	O
.	O
</s>
<s>
Coates	B-Device
is	O
part	O
of	O
Purdue	O
's	O
distributed	O
computing	O
Condor	B-Operating_System
flock	O
,	O
which	O
is	O
the	O
largest	O
publicly	O
disclosed	O
distributed	O
computing	O
system	O
in	O
the	O
world	O
and	O
the	O
center	O
of	O
DiaGrid	B-Operating_System
,	O
a	O
nearly	O
43,000	O
-processor	O
Condor-powered	O
distributed	O
computing	O
network	O
for	O
research	O
involving	O
Purdue	O
and	O
partners	O
at	O
nine	O
other	O
campuses	O
.	O
</s>
<s>
The	O
Rossmann	B-Device
cluster	B-Architecture
is	O
named	O
for	O
Michael	O
Rossmann	B-Device
,	O
Purdue	O
's	O
Hanley	O
Distinguished	O
Professor	O
of	O
Biological	O
Sciences	O
,	O
who	O
is	O
a	O
pioneer	O
in	O
employing	O
high-performance	B-Architecture
computing	I-Architecture
in	O
research	O
to	O
reveal	O
the	O
structure	O
of	O
viruses	O
and	O
their	O
component	O
protein	O
molecules	O
.	O
</s>
<s>
Rossmann	B-Device
gained	O
worldwide	O
attention	O
in	O
1985	O
by	O
determining	O
the	O
structure	O
of	O
human	O
rhinovirus	O
serotype14	O
,	O
HRV-14	O
,	O
one	O
of	O
about	O
100	O
known	O
cold	O
virus	O
strains	O
.	O
</s>
<s>
The	O
Rossmann	B-Device
cluster	B-Architecture
continues	O
ITaP	O
's	O
practice	O
of	O
naming	O
new	O
supercomputers	B-Architecture
after	O
notable	O
figures	O
in	O
Purdue	O
's	O
computing	O
history	O
.	O
</s>
