Jerome Berryhill developed a shared memory communication feature for the ath3 array in the schism-dev/schism repository, focusing on optimizing intra-node data sharing for high-performance computing workloads. He implemented a conditional SH_MEM_COMM path using Fortran and MPI, leveraging MPI_Win allocation and management to enable fast, efficient communication between processes on the same node. This approach reduced inter-process latency and established a scalable foundation for multi-process workloads within a single node. Over the month, Jerome concentrated on feature delivery and integration, applying his expertise in Fortran, MPI, and shared memory to address performance bottlenecks without reporting major bug fixes.