  We present enhancements to SDPB, an open source, parallelized, arbitrary
precision semidefinite program solver designed for the conformal bootstrap. The
main enhancement is significantly improved performance and scalability using
the Elemental library and MPI. The result is a new version of SDPB that runs on
multiple nodes with hundreds of cores with excellent scaling, making it
practical to solve larger problems. We demonstrate performance on a
moderate-size problem in the 3d Ising CFT and a much larger problem in the
$O(2)$ Model.
