Job Information
Argonne National Laboratory Postdoctoral Appointee – High Performance Computing in Lemont, Illinois
The Argonne Leadership Facility (ALCF) is seeking a Postdoctoral Appointee who will contribute to the research and development of the nekRS CFD solver. Potential project areas include mesh partitioning, preconditioners, GPU kernel optimization and tuning, kernel translation and jit compilation, and the development of OCCA backends for novel platforms—like those in the ALCF JLSE and AI testbeds.
In this role you can expect to:
Perform research and development improving the functionality and performance of the nekRS CFD solver on ALCF systems—including the Aurora exascale supercomputer.
Collaborate with scientists and engineers across multiple Argonne divisions, other national laboratories and academic institutions, and industry.
Contribute production quality code to open-source software used on platforms ranging from laptops to the world’s largest supercomputers.
Promote findings through journal publications, conference presentations, workshops, technical reports, and other means.
Strengthen your career path opportunities by honing in-demand skills—including advanced GPU programming, performance analysis and optimization, and the design and development of portable scientific software—on a diverse collection of cutting-edge hardware.
Position Requirements
Required Skills:
Recent or soon-to-be completed PhD (typically completed within the last five years)
0-5 years of experience in computer science, engineering, applied mathematics, or another related field.
Experience with C++ programming.
Effective written and oral communication skills.
Ability to work individually and collaboratively as part of a team.
Ability to model Argonne’s Core Values: Impact, Safety, Respect, Integrity, and Teamwork
Preferred Skills:
Proficiency in C++17 or later—including classes, polymorphism, templates, lambdas, exceptions, STL containers.
Experience with GPU programing using CUDA, HIP, SYCL, OpenCL, or OpenMP.
Experience with MPI programming—including non-blocking communication and neighborhood collectives.
Familiarity with building and deploying scientific software on large HPC systems.
Expertise in performance profiling and tuning of software.
Familiarity with open-source software development and best practices.
Experience using the nekRS CFD solver on leadership class HPC systems.
Knowledge of the OCCA portability framework.
Job Family
Postdoctoral Family
Job Profile
Postdoctoral Appointee
Worker Type
Long-Term (Fixed Term)
Time Type
Full time
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