<s>
Sun	O
Microsystems	O
 '	O
UltraSPARC	B-Device
T2	I-Device
microprocessor	B-Architecture
is	O
a	O
multithreading	B-Operating_System
,	O
multi-core	B-Architecture
CPU	I-Architecture
.	O
</s>
<s>
It	O
is	O
a	O
member	O
of	O
the	O
SPARC	B-Architecture
family	O
,	O
and	O
the	O
successor	O
to	O
the	O
UltraSPARC	B-General_Concept
T1	I-General_Concept
.	O
</s>
<s>
The	O
chip	B-Architecture
is	O
sometimes	O
referred	O
to	O
by	O
its	O
codename	O
,	O
Niagara	B-Device
2	I-Device
.	O
</s>
<s>
The	O
T2	O
is	O
a	O
commodity	O
derivative	O
of	O
the	O
UltraSPARC	B-Architecture
series	O
of	O
microprocessors	B-Architecture
,	O
targeting	O
Internet	O
workloads	O
in	O
computers	O
,	O
storage	O
and	O
networking	O
devices	O
.	O
</s>
<s>
The	O
processor	O
,	O
manufactured	O
in	O
65	B-Algorithm
nm	I-Algorithm
,	O
is	O
available	O
with	O
eight	O
CPU	B-Architecture
cores	I-Architecture
,	O
and	O
each	O
core	O
is	O
able	O
to	O
handle	O
eight	O
threads	B-Operating_System
concurrently	O
.	O
</s>
<s>
Thus	O
the	O
processor	O
is	O
capable	O
of	O
processing	O
up	O
to	O
64	O
concurrent	O
threads	B-Operating_System
.	O
</s>
<s>
In	O
April	O
2008	O
,	O
Sun	O
released	O
servers	O
based	O
on	O
the	O
UltraSPARC	B-Device
T2	I-Device
Plus	I-Device
processor	O
,	O
an	O
SMP	B-Operating_System
capable	O
version	O
of	O
UltraSPARC	B-Device
T2	I-Device
.	O
</s>
<s>
Sun	O
released	O
the	O
UltraSPARC	B-Device
T2	I-Device
Plus	I-Device
processor	O
with	O
the	O
following	O
changes	O
:	O
</s>
<s>
UltraSPARC	B-Device
T2	I-Device
Plus	I-Device
processors	O
can	O
be	O
found	O
in	O
the	O
following	O
products	O
from	O
Sun	O
and	O
Fujitsu	O
Computer	O
Systems	O
:	O
</s>
<s>
Two-way	O
SMP	B-Operating_System
servers	O
:	O
</s>
<s>
Four-way	O
SMP	B-Operating_System
server	O
:	O
</s>
<s>
The	O
High	O
Performance	O
Computing	O
Virtual	O
Laboratory	O
in	O
Canada	O
built	O
a	O
compute	O
cluster	O
using	O
78	O
Sun	B-Architecture
SPARC	I-Architecture
Enterprise	O
T5140	O
servers	O
.	O
</s>
<s>
With	O
two	O
1.2GHz	O
T2	O
Plus	O
chips	O
in	O
each	O
T5140	O
server	O
,	O
the	O
cluster	O
has	O
close	O
to	O
10,000	O
compute	O
threads	B-Operating_System
,	O
making	O
it	O
ideal	O
for	O
high-throughput	O
workloads	O
.	O
</s>
<s>
The	O
SPARC	B-Architecture
Hypervisor	O
runs	O
in	O
this	O
mode	O
and	O
can	O
partition	O
a	O
T2	O
system	O
into	O
64	O
Logical	O
Domains	O
,	O
and	O
a	O
two-way	O
SMP	B-Operating_System
T2	O
Plus	O
system	O
into	O
128	O
Logical	O
Domains	O
,	O
each	O
of	O
which	O
can	O
run	O
an	O
independent	O
operating	O
system	O
instance	O
.	O
</s>
<s>
Other	O
UltraSPARC	B-Device
T2	I-Device
performance	O
related	O
tunings	O
are	O
documented	O
on	O
Oracle	O
engineers	O
 '	O
blogs	O
.	O
</s>
<s>
Sun	O
explains	O
that	O
this	O
is	O
due	O
to	O
a	O
higher	O
degree	O
of	O
system	O
integration	O
onto	O
the	O
chip	B-Architecture
.	O
</s>
<s>
On	O
April	O
12	O
,	O
2006	O
,	O
Sun	O
announced	O
the	O
tape-out	O
of	O
the	O
UltraSPARC	B-Device
T2	I-Device
.	O
</s>
<s>
Sun	O
announced	O
the	O
T2	O
's	O
release	O
on	O
7	O
August	O
2007	O
,	O
billing	O
it	O
as	O
"	O
the	O
world	O
's	O
fastest	O
microprocessor	B-Architecture
"	O
.	O
</s>
<s>
On	O
April	O
9	O
,	O
2008	O
,	O
Sun	O
announced	O
the	O
UltraSPARC	B-Device
T2	I-Device
Plus	I-Device
.	O
</s>
<s>
On	O
December	O
11	O
,	O
2007	O
,	O
Sun	O
made	O
the	O
UltraSPARC	B-Device
T2	I-Device
processor	O
design	O
publicly	O
available	O
under	O
the	O
GNU	B-License
General	I-License
Public	I-License
License	I-License
via	O
the	O
OpenSPARC	B-Device
project	O
.	O
</s>
