Toward a Standard Interface for User-Defined Scheduling in OpenMP

Kale, Vivek and Iwainsky, Christian and Klemm, Michael and Müller Korndörfer, Jonas H. and Ciorba, Florina M.. (2019) Toward a Standard Interface for User-Defined Scheduling in OpenMP. In: OpenMP: Conquering the Full Hardware Spectrum. Cham, pp. 186-200.

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Parallel loops are an important part of OpenMP programs. Efficient scheduling of parallel loops can improve performance of the programs. The current OpenMP specification only offers three options for loop scheduling, which are insufficient in certain instances. Given the large number of other possible scheduling strategies, standardizing each of them is infeasible. A more viable approach is to extend the OpenMP standard to allow a user to define loop scheduling strategies within her application. The approach will enable standard-compliant application-specific scheduling. This work analyzes the principal components required by user-defined scheduling and proposes two competing interfaces as candidates for the OpenMP standard. We conceptually compare the two proposed interfaces with respect to the three host languages of OpenMP, i.e., C, C++, and Fortran. These interfaces serve the OpenMP community as a basis for discussion and prototype implementation supporting user-defined scheduling in an OpenMP library.
Faculties and Departments:05 Faculty of Science > Departement Mathematik und Informatik > Informatik > High Performance Computing (Ciorba)
UniBasel Contributors:Müller Korndörfer, Jonas Henrique and Ciorba, Florina M.
Item Type:Conference or Workshop Item, refereed
Conference or workshop item Subtype:Conference Paper
Series Name:Lecture Notes in Computer Science
Issue Number:11718
Note:Publication type according to Uni Basel Research Database: Conference paper
Identification Number:
Last Modified:10 Mar 2020 11:15
Deposited On:10 Mar 2020 11:15

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