  Many of the classic graph problems cannot be solved in the Massively Parallel
Computation setting (MPC) with strongly sublinear space per machine and $o(\log
n)$ rounds, unless the 1-vs-2 cycles conjecture is false. This is true even on
planar graphs. Such problems include, for example, counting connected
components, bipartition, minimum spanning tree problem, (approximate) shortest
paths, and (approximate) diameter/radius.
  In this paper, we show a way to get around this limitation. Specifically, we
show that if we have a ``nice'' (for example, straight-line) embedding of the
input graph, all the mentioned problems can be solved with
$O(n^{2/3+\epsilon})$ space per machine in $O(1)$ rounds. In conjunction with
existing algorithms for computing the Delaunay triangulation, our results imply
an MPC algorithm for exact Euclidean minimum spanning thee (EMST) that uses
$O(n^{2/3 + \epsilon})$ space per machine and finishes in $O(1)$ rounds. This
is the first improvement over a straightforward use of the standard
Bor\r{u}vka's algorithm with the Dauleanay triangulation algorithm of Goodrich
[SODA 1997] which results in $\Theta(\log n)$ rounds. This also partially
negatively answers a question of Andoni, Nikolov, Onak, and Yaroslavtsev [STOC
2014], asking for lower bounds for exact EMST.
  We extend our algorithms to work with embeddings consisting of curves that
are not ``too squiggly" (as formalized by the total absolute curvature). We do
this via a new lemma which we believe is of independent interest and could be
used to parameterize other geometric problems by the total absolute curvature.
We also state several open problems regarding massively parallel computation on
planar graphs.
