Persistent coarrays: Integrating MPI storage windows in coarray fortran

The inherent integration of novel hardware and software components on HPC is expected to considerably aggravate the Mean Time Between Failures (MTBF) on scientific applications, while simultaneously increase the programming complexity of these clusters. In this work, we present the initial steps towards the integration of transparent resilience support inside Coarray Fortran. In particular, we propose persistent coarrays, an extension of OpenCoarrays that integrates MPI storage windows to leverage its transport layer and seamlessly map coarrays to files on storage. Preliminary results indicate that our approach provides clear benefits on representative workloads, while incurring in minimal source code changes.

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Author Rivas-Gomez, Sergio
Fanfarillo, Alessandro
Narasimhamurthy, Sai
Markidis, Stefano
Publisher UCAR/NCAR - Library
Publication Date 2019-09-11T00:00:00
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Topic Category geoscientificInformation
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Metadata Date 2023-08-18T19:23:11.987501
Metadata Record Identifier edu.ucar.opensky::articles:22848
Metadata Language eng; USA
Suggested Citation Rivas-Gomez, Sergio, Fanfarillo, Alessandro, Narasimhamurthy, Sai, Markidis, Stefano. (2019). Persistent coarrays: Integrating MPI storage windows in coarray fortran. UCAR/NCAR - Library. http://n2t.net/ark:/85065/d7x06b6m. Accessed 25 June 2025.

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