  This paper presents a parallel \PG{implementation} for the Optimal
Transportation Meshfree (OTM) method on large CPU clusters. Communications are
handled with the Message Passing Interface (MPI). The Recursive Coordinate
Bisection (RCB) algorithm is utilized for domain decomposition and for
implementing dynamic load-balancing strategy. This work involves three new
concepts to reduce the computational efforts: Dynamic halo regions, Efficient
data management strategies for ease of addition and deletion of nodes and
material points using advanced STL container, and nearest neighborhood
communication for detection of neighbors and communication. Also, Linked Cell
approach has been implemented to further reduce the computational efforts.
Parallel performance analysis is investigated for challenging multiphysics
applications like Taylor rod impact and serrated chip formation process.
Adequate scalability of parallel implementation for these applications is
reported.
