OpenMP 4.5 Validation and Verification Suite for Device Offload

Conference · Wed Aug 01 00:00:00 EDT 2018 · EVOLVING OPENMP FOR EVOLVING ARCHITECTURES

DOI:https://doi.org/10.1007/978-3-319-98521-3_6· OSTI ID:1567477

Diaz, Jose Monsalve ^[1]; Pophale, Swaroop ^[2]; Hernandez, Oscar ^[2]; Bernholdt, David E. ^[2]; Chandrasekaran, Sunita ^[1]

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1. University of Delaware
2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

OpenMP has been widely adopted for shared memory systems for over a decade. With the heterogeneity trend in architectures rapidly growing, the programming model needed to evolve such that applications could not only be ported to traditional CPUs but also to accelerators often acting as discrete or integrated devices to CPUs. To that end, OpenMP started to provide support for heterogeneous systems since 2013 when the version 4.0 of the specification was ratified. OpenMP 4.5 is being enhanced to cover major requirements of Exascale Computing Project (ECP) applications. As a result it is time-critical to ensure that the implementations of the 4.5 features are correct and conforming to the specification. This paper focuses on building a Validation and Verification testsuite that will test and present results for several offloading features implemented in compilers such as Clang, IBM XL C/C++, CCE, and GCC. We have results for our testsuite on TITAN, Summitdev and Summit at the Oak Ridge National Lab. We will highlight some of the ambiguities we encountered in the process of validating and verifying feature implementations. We also make the testsuite available for anyone to use and will walk the readers through the infrastructure and the workflow of the testsuite. A website has been built to capture our efforts narrated in this paper https://crpl.cis.udel.edu/ompvvsollve.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF); UT-Battelle LLC/ORNL, Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1567477
• Journal Information: EVOLVING OPENMP FOR EVOLVING ARCHITECTURES, Vol. 11128; Conference: IWOMP 2018: Evolving OpenMP for Evolving Architectures pp 82-95, Barcelona, Spain, September 27-28, 2018.
• Publisher: Springer, Cham
• Country of Publication: United States
• Language: English

Related Subjects

99 GENERAL AND MISCELLANEOUS
Computer Science
OpenMP
Validation and Verification
Testsuite