<s>
Sparse	B-Algorithm
matrix	I-Algorithm
–	I-Algorithm
vector	I-Algorithm
multiplication	I-Algorithm
(	O
SpMV	O
)	O
of	O
the	O
form	O
is	O
a	O
widely	O
used	O
computational	B-Operating_System
kernel	I-Operating_System
existing	O
in	O
many	O
scientific	O
applications	O
.	O
</s>
<s>
The	O
input	O
matrix	O
is	O
sparse	B-Algorithm
.	O
</s>
<s>
In	O
the	O
case	O
of	O
a	O
repeated	O
operation	O
involving	O
the	O
same	O
input	O
matrix	O
but	O
possibly	O
changing	O
numerical	O
values	O
of	O
its	O
elements	O
,	O
can	O
be	O
preprocessed	O
to	O
reduce	O
both	O
the	O
parallel	O
and	O
sequential	O
run	O
time	O
of	O
the	O
SpMV	O
kernel	B-Operating_System
.	O
</s>
