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Presentation . 2024
License: CC BY
Data sources: Datacite
ZENODO
Presentation . 2024
License: CC BY
Data sources: Datacite
ZENODO
Presentation . 2024
License: CC BY
Data sources: Datacite
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Revisiting MPI-IO Consistency: Potential Revisions and Their Impact on HDF5

Authors: Wang, Chen;

Revisiting MPI-IO Consistency: Potential Revisions and Their Impact on HDF5

Abstract

The first Message Passing Interface (MPI) standard (MPI 1.0) was published in 1994, aiming to create a widely used standard for writing message-passing programs. However, I/O was not included in the initial MPI standard; support for parallel I/O was added later in MPI-2.0, which was published in 1997. Since then, I/O has become an integral part of the MPI standard. The design of MPI-IO has remained largely unchanged over the years, and we have observed some performance limitations in HPC systems. MPI-IO serves as middleware that sits beneath the parallel HDF5 implementation. Therefore, HDF5's performance is significantly influenced by the underlying MPI-IO implementation. In this talk, I will discuss the performance implications of the current MPI-IO design, with a special focus on its interface and consistency semantics. Additionally, I will discuss an ongoing effort within the MPI-IO workgroup to revise the current MPI-IO consistency design, and how these potential revisions could affect HDF5, considering both programmability and performance.

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    popularity
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    influence
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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average