  We study supersymmetric D3 brane configurations wrapping internal cycles of
type II backgrounds AdS(5) x H for a generic Sasaki-Einstein manifold H. These
configurations correspond to BPS baryonic operators in the dual quiver gauge
theory. In each sector with given baryonic charge, we write explicit partition
functions counting all the BPS operators according to their flavor and
R-charge. We also show how to extract geometrical information about H from the
partition functions; in particular, we give general formulae for computing
volumes of three cycles in H.
