<s>
IBM	B-Device
System	I-Device
z10	I-Device
is	O
a	O
line	O
of	O
IBM	O
mainframes	B-Architecture
.	O
</s>
<s>
The	O
System	B-Device
z10	I-Device
represents	O
the	O
first	O
model	O
family	O
powered	O
by	O
the	O
z10	B-Device
quad	I-Device
core	I-Device
processing	I-Device
engine	I-Device
.	O
</s>
<s>
Depending	O
on	O
the	O
capacity	O
model	O
,	O
a	O
PU	O
can	O
be	O
characterized	O
as	O
a	O
Central	B-Device
Processor	I-Device
(	O
CP	O
)	O
,	O
Integrated	B-Application
Facility	I-Application
for	I-Application
Linux	I-Application
(	O
IFL	O
)	O
processor	O
,	O
z	B-Language
Application	I-Language
Assist	I-Language
Processor	I-Language
(	O
zAAP	B-Language
)	O
,	O
z10	B-Device
Integrated	I-Device
Information	I-Device
Processor	I-Device
(	O
zIIP	B-Device
)	O
,	O
or	O
Internal	O
Coupling	B-Device
Facility	I-Device
(	O
ICF	O
)	O
processor	O
.	O
</s>
<s>
It	O
is	O
also	O
possible	O
to	O
configure	O
additional	O
System	B-Device
Assist	I-Device
Processors	I-Device
,	O
but	O
most	O
customers	O
find	O
the	O
mandatory	O
minimum	O
SAP	O
allocation	O
sufficient	O
.	O
</s>
<s>
The	O
System	B-Device
z10	I-Device
supports	O
the	O
following	O
IBM	O
operating	O
systems	O
:	O
z/OS	B-Application
,	O
z/VSE	B-Application
,	O
z/VM	B-Application
,	O
and	O
z/TPF	B-Operating_System
(	O
and	O
its	O
immediate	O
predecessor	O
,	O
TPF/ESA	B-Operating_System
)	O
.	O
</s>
<s>
Other	O
operating	O
systems	O
available	O
include	O
Linux	B-Application
on	I-Application
System	I-Application
z	I-Application
,	O
OpenSolaris	B-Application
for	I-Application
System	I-Application
z	I-Application
,	O
UTS	B-Operating_System
,	O
and	O
MUSIC/SP	B-Application
(	O
at	O
least	O
in	O
principle	O
)	O
.	O
</s>
<s>
In	O
addition	O
to	O
much	O
higher	O
performance	O
,	O
System	B-Device
z10	I-Device
introduced	O
a	O
number	O
of	O
new	O
mainframe	B-Architecture
features	O
.	O
</s>
<s>
The	O
System	B-Device
z10	I-Device
adds	O
hardware-based	O
192-bit	O
and	O
256-bit	O
Advanced	B-Algorithm
Encryption	I-Algorithm
Standard	I-Algorithm
(	O
AES	B-Algorithm
)	O
in	O
addition	O
to	O
the	O
128-bit	O
AES	B-Algorithm
support	O
already	O
available	O
on	O
the	O
z9	B-Device
.	O
</s>
<s>
The	O
System	B-Device
z9	I-Device
was	O
the	O
first	O
commercial	O
server	O
to	O
add	O
IEEE	O
754	O
decimal	O
floating	O
point	O
instructions	O
,	O
although	O
these	O
instructions	O
were	O
implemented	O
in	O
microcode	O
with	O
some	O
hardware	O
assists	O
.	O
</s>
<s>
The	O
System	B-Device
z10	I-Device
implements	O
the	O
main	O
IEEE	O
754	O
decimal	O
floating	O
point	O
operations	O
in	O
a	O
built-in	O
,	O
integral	O
component	O
of	O
each	O
processor	O
core	O
and	O
instruction	O
set	O
architecture	O
.	O
</s>
<s>
As	O
examples	O
,	O
Enterprise	O
PL/I	B-Language
,	O
XL	O
C	O
,	O
and	O
the	O
z/OS	B-Application
Java	O
BigDecimal	O
class	O
can	O
exploit	O
hardware	O
decimal	O
floating	O
point	O
.	O
</s>
<s>
The	O
System	B-Device
z10	I-Device
processor	O
adds	O
numerous	O
new	O
instructions	O
,	O
primarily	O
concentrated	O
on	O
improving	O
the	O
efficiency	O
and	O
performance	O
of	O
compiled	O
code	O
.	O
</s>
<s>
The	O
z/OS	B-Application
Java	B-Language
SDK	I-Language
exploits	O
these	O
additional	O
instructions	O
when	O
running	O
on	O
a	O
z10	O
.	O
</s>
<s>
On	O
July	O
7	O
,	O
2009	O
,	O
IBM	O
disclosed	O
z/VM	B-Application
Version	O
6.1	O
,	O
a	O
new	O
version	O
which	O
requires	O
the	O
additional	O
instructions	O
only	O
available	O
in	O
the	O
System	B-Device
z10	I-Device
and	O
future	O
models	O
.	O
</s>
<s>
On	O
the	O
System	B-Device
z10	I-Device
,	O
and	O
with	O
the	O
appropriate	O
version	O
of	O
z/VM	B-Application
,	O
a	O
single	O
logical	B-Device
partition	I-Device
(	O
LPAR	B-Device
)	O
can	O
now	O
span	O
all	O
processor	O
types	O
.	O
</s>
<s>
Previously	O
,	O
IFLs	O
(	O
Linux	O
processors	O
)	O
had	O
to	O
reside	O
in	O
their	O
own	O
separate	O
LPAR(s )	O
.	O
</s>
<s>
The	O
z10	O
also	O
supports	O
much	O
faster	O
z/VM	B-Application
startup	O
from	O
DVD-RAM	O
.	O
</s>
<s>
Consequently	O
,	O
IBM	O
started	O
providing	O
a	O
no-charge	O
,	O
downloadable	O
z/VM	B-Application
Evaluation	O
Edition	O
.	O
</s>
<s>
System	B-Device
z10	I-Device
has	O
a	O
simplified	O
,	O
more	O
automated	O
architecture	O
for	O
activation	O
and	O
deactivation	O
of	O
Capacity	O
on	O
Demand	O
processing	O
.	O
</s>
<s>
IBM	O
also	O
introduced	O
a	O
new	O
Capacity	O
for	O
Planned	O
Events	O
(	O
CPE	O
)	O
offering	O
,	O
which	O
allows	O
mainframe	B-Architecture
owners	O
to	O
activate	O
CPU	O
capacity	O
temporarily	O
to	O
facilitate	O
moving	O
machines	O
between	O
data	O
centers	O
,	O
upgrades	O
,	O
and	O
other	O
routine	O
management	O
tasks	O
at	O
a	O
much	O
lower	O
cost	O
.	O
</s>
<s>
System	B-Device
z10	I-Device
provides	O
InfiniBand	B-Architecture
coupling	O
options	O
for	O
Parallel	B-Operating_System
Sysplex	I-Operating_System
.	O
</s>
<s>
Some	O
of	O
these	O
options	O
are	O
available	O
for	O
retrofit	O
to	O
the	O
System	B-Device
z9	I-Device
.	O
</s>
<s>
As	O
the	O
number	O
of	O
cores	O
in	O
the	O
System	B-Device
z	I-Device
machines	O
has	O
grown	O
,	O
IBM	O
engineers	O
have	O
continued	O
to	O
find	O
ways	O
to	O
reduce	O
symmetric	B-Operating_System
multiprocessing	I-Operating_System
(	O
SMP	O
)	O
effects	O
.	O
</s>
<s>
The	O
latest	O
effort	O
to	O
reduce	O
these	O
penalties	O
is	O
HiperDispatch	O
,	O
a	O
set	O
of	O
intelligent	O
,	O
cooperative	O
dispatching	O
strategies	O
between	O
the	O
System	B-Device
z10	I-Device
hardware	O
and	O
z/OS	B-Application
,	O
particularly	O
the	O
z/OS	B-Application
Workload	O
Manager	O
and	O
dispatcher	O
.	O
</s>
<s>
HiperDispatch	O
helps	O
maintain	O
near-linear	O
SMP	O
scalability	O
and	O
is	O
more	O
relevant	O
to	O
the	O
larger	O
models	O
,	O
but	O
it	O
is	O
enabled	O
by	O
default	O
on	O
all	O
System	B-Device
z10	I-Device
machines	O
.	O
</s>
<s>
Released	O
on	O
February	O
26	O
,	O
2008	O
,	O
the	O
System	B-Device
z10	I-Device
Enterprise	O
Class	O
is	O
available	O
in	O
five	O
hardware	O
models	O
:	O
E12	O
,	O
E26	O
,	O
E40	O
,	O
E56	O
,	O
and	O
E64	O
.	O
</s>
<s>
For	O
each	O
CP	O
ordered	O
,	O
one	O
zAAP	B-Language
and	O
one	O
zIIP	B-Device
may	O
also	O
be	O
ordered	O
.	O
</s>
<s>
Optional	O
SAPs	O
are	O
required	O
only	O
in	O
some	O
situations	O
when	O
using	O
TPF/ESA	B-Operating_System
or	O
z/TPF	B-Operating_System
.	O
</s>
<s>
For	O
each	O
CP	O
ordered	O
,	O
one	O
zAAP	B-Language
and	O
one	O
zIIP	B-Device
may	O
also	O
be	O
ordered	O
.	O
</s>
