%0Computer Program %TMaskman %XSAND2025-04369O Maskman is a user-friendly tool designed to create hex masks, which are essential for optimizing application performance in high-performance computing environments. By converting a list of integers into binary and then hex masks, Maskman simplifies the process of setting application affinity. This ensures that software runs efficiently on specific nodes within a computing cluster. Ideal for researchers and developers, Maskman streamlines the preparation of inputs for HPC schedulers, enhancing resource management and improving overall system performance. Sandia National Laboratories is a multimission laboratory managed and operated by National Technology & Engineering Solutions of Sandia, LLC, a wholly owned subsidiary of Honeywell International Inc., for the U.S. Department of Energy’s National Nuclear Security Administration under contract DE-NA0003525. %APase, Douglas %AAgelastos, Anthony %Rhttps://doi.org/10.11578/dc.20250819.5 %Uhttps://www.osti.gov/doecode/biblio/161069 %CUnited States %D2025 %GEnglish %2USDOE %1NA0003525 2025-03-21