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PSI/J: A Portable Interface for Submitting, Monitoring, and Managing Jobs...

Publication Type
Conference Paper
Book Title
2023 IEEE 19th International Conference on e-Science (e-Science)
Publication Date
Page Numbers
1 to 10
Publisher Location
New Jersey, United States of America
Conference Name
IEEE International Conference on e-Science
Conference Location
Limassol, Cyprus
Conference Sponsor
IEEE
Conference Date
-

It is generally desirable for high-performance computing (HPC) applications to be portable between HPC systems, for example to make use of more performant hardware, make effective use of allocations, and to co-locate compute jobs with large datasets. Unfortunately, moving scientific applications between HPC systems is challenging for various reasons, most notably that HPC systems have different HPC schedulers. We introduce PSI/J, a job management abstraction API intended to simplify the construction of software components and applications that are portable over various HPC scheduler implementations. We argue that such a system is both necessary and that no viable alternative currently exists. We analyze similar notable APIs and attempt to determine the factors that influenced their evolution and adoption by the HPC community. We base the design of PSI/J on that analysis. We describe how PSI/J has been integrated in three workflow systems and one application, and also show via experiments that PSI/J imposes minimal overhead.