<s>
Software	O
is	O
said	O
to	O
exhibit	O
scalable	B-Operating_System
parallelism	I-Operating_System
if	O
it	O
can	O
make	O
use	O
of	O
additional	O
processors	O
to	O
solve	O
larger	O
problems	O
,	O
</s>
<s>
this	O
term	O
refers	O
to	O
software	O
for	O
which	O
Gustafson	B-Operating_System
's	I-Operating_System
law	I-Operating_System
holds	O
.	O
</s>
<s>
for	O
example	O
,	O
the	O
following	O
finite	B-Algorithm
difference	I-Algorithm
heat	O
equation	O
stencil	B-Algorithm
calculation	I-Algorithm
:	O
</s>
<s>
i.e.	O
,	O
turn	O
each	O
into	O
a	O
parallel	B-Operating_System
loop	I-Operating_System
.	O
</s>
<s>
As	O
in	O
this	O
example	O
,	O
scalable	B-Operating_System
parallelism	I-Operating_System
is	O
typically	O
a	O
form	O
of	O
data	B-Operating_System
parallelism	I-Operating_System
.	O
</s>
<s>
and	O
thus	O
would	O
seem	O
a	O
natural	O
target	O
for	O
software	O
that	O
exhibits	O
scalable	B-Operating_System
parallelism	I-Operating_System
.	O
</s>
<s>
to	O
run	O
effectively	O
on	O
such	O
systems	O
(	O
unless	O
the	O
software	O
is	O
embarrassingly	B-Operating_System
parallel	I-Operating_System
)	O
.	O
</s>
<s>
In	O
our	O
example	O
above	O
,	O
the	O
second	O
"	O
i	O
"	O
loop	O
is	O
embarrassingly	B-Operating_System
parallel	I-Operating_System
,	O
</s>
