<s>
Virtualization	B-General_Concept
for	I-General_Concept
aggregation	I-General_Concept
combines	O
physical	B-Application
servers	I-Application
and	O
their	O
memory	O
and	O
CPU	O
power	O
to	O
create	O
a	O
single	O
,	O
large	O
virtual	B-Architecture
machine	I-Architecture
.	O
</s>
<s>
Virtualization	B-General_Concept
for	I-General_Concept
aggregation	I-General_Concept
is	O
the	O
opposite	O
of	O
traditional	O
server	B-General_Concept
virtualization	I-General_Concept
,	O
which	O
partitions	O
a	O
single	O
physical	O
system	O
so	O
that	O
multiple	O
OSes	B-General_Concept
can	O
be	O
run	O
on	O
the	O
hardware	O
.	O
</s>
<s>
The	O
technology	O
is	O
primarily	O
used	O
to	O
run	O
compute-intensive	O
applications	O
on	O
a	O
virtual	O
symmetric	B-Operating_System
multiprocessing	I-Operating_System
(	O
SMP	O
)	O
system	O
,	O
and	O
can	O
benefit	O
users	O
who	O
want	O
to	O
provide	O
very	O
large	O
memory	O
and	O
capacity	O
resources	O
for	O
high-performance	B-Architecture
computing	I-Architecture
(	O
HPC	O
)	O
needs	O
without	O
having	O
to	O
invest	O
in	O
proprietary	O
SMP	O
systems	O
,	O
which	O
are	O
beyond	O
the	O
reach	O
of	O
many	O
users	O
.	O
</s>
