<s>
OurGrid	B-Application
is	O
an	O
opensource	B-License
grid	B-Architecture
middleware	B-General_Concept
based	O
on	O
a	O
peer-to-peer	O
architecture	O
.	O
</s>
<s>
OurGrid	B-Application
was	O
mainly	O
developed	O
at	O
the	O
Federal	O
University	O
of	O
Campina	O
Grande	O
(	O
Brazil	O
)	O
,	O
which	O
has	O
run	O
an	O
OurGrid	B-Application
instance	O
named	O
"	O
OurGrid	B-Application
"	O
since	O
December	O
2004	O
.	O
</s>
<s>
Anyone	O
can	O
freely	O
join	O
it	O
to	O
gain	O
access	O
to	O
large	O
amount	O
of	O
computational	O
power	O
and	O
run	O
parallel	B-Operating_System
applications	I-Operating_System
.	O
</s>
<s>
parts	O
that	O
run	O
on	O
a	O
single	O
machine	O
)	O
do	O
not	O
communicate	O
among	O
themselves	O
during	O
execution	O
,	O
like	O
most	O
simulations	B-Application
,	O
data	B-Application
mining	I-Application
and	O
searching	O
.	O
</s>
