Let
G
=
V
G
,
E
G
be the connected graph. For any vertex
i
∈
V
G
and a subset
B
⊆
V
G
, the distance between
i
and
B
is
d
i
;
B
=
min
d
i
,
j
|
j
∈
B
. The ordered
k
-partition of
V
G
is
Π
=
B
1
,
B
2
,
…
,
B
k
. The representation of vertex
i
with respect to
Π
is the
k
-vector, that is,
r
i
|
Π
=
d
i
,
B
1
,
d
i
,
B
2
,
…
,
d
i
,
B
k
. The partition
Π
is called the resolving (distinguishing) partition if
r
i
|
Π
≠
r
j
|
Π
, for all distinct
i
,
j
∈
V
G
. The minimum cardinality of the resolving partition is called the partition dimension, denoted as
pd
G
. In this paper, we consider the upper bound for the partition dimension of the generalized Petersen graph in terms of the cardinalities of its partite sets.