A workload consists of one or more benchmark kernels (stored in the kernels folder), and a dataset (see NOTE below). The workloads in the workloads folder contain a top-level C-file that instantiates the test harness.
Workloads, Kernels, and DatasetsĪs stated above, each workload compiles to a single binary.
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The computation for the CoreMark-PRO score is described in the included PDF documentation. Non-Linux targets (e.g., baremetal) are more complex to run, as each binary needs to be downloaded to the hardware manually and the individual results collected from a remote debugger console by retargeting the al_printf function. The example above was run from a Linux CLI, where it is possible to invoke each binary in simple succession via the Makefile and collect scores for analysis by the Perl script. The MITH harness provieds a mith_main function, and the actual main functions are provided in the workload areas. Out of the box, the MITH abstraction layer is configured to work with the POSIX pthread architecture on Linux, but any thread scheduling system that can be represented through the MITH abstraction layer is valid (including no threading on baremetal). In fact, changing any other source files invalidates the CoreMark-PRO score. The file th_al.c in the al/src folder is the only place modifications are needed to port the benchmark to new hardware. Found in the mith folder, the test harness consists of high-level functions for launching the tests, and a low-level abstraction layer (in the al folder) for interfacing with the hardware or operating system. The benchmark utilizes EEMBC's Multi-Instance Test Harness, or MITH.
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Please refer to the documentation for explanations of how to change the number of contexts and workers. This will run all nine tests twice, once with one context and once with a user-defined number of contexts, in this case four, and then generate the scaling between the two configurations. To compile for Linux and the gcc64 toolchain, use this command: Accomodations for custom targets and toolchains are placed in the util/make folder. Basic Overviewīuild the benchmark using the make command and specificying a target architecture with TARGET=. The CoreMark-PRO score is a weighted geometric mean of each workload, as describe on page 12 of the provided PDF document. Kernel 24 - find location of first minimum in array.Kernel 23 - 2-D implicit hydrodynamics fragment.Kernel 20 - Discrete ordinates transport, conditional recurrence on xx.Kernel 19 - general linear recurrence equations.Kernel 18 - 2-D explicit hydrodynamics fragment.Kernel 17 - implicit, conditional computation.Kernel 13 - 2-D PIC (Particle In Cell).
Kernel 6 - general linear recurrence equations.Kernel 5 - tri-diagonal elimination, below diagonal.Kernel 2 - ICCG excerpt (Incomplete Cholesky Conjugate Gradient).A greatly improved version of the Livermore loops benchmark using the following 24 FORTRAN kernels converted to C (all of these reported as a single score of the loops.c workload).Gaussian elimination with partial pivoting derived from LINPACK.A more memory-intensive version of the original CoreMark.The EEMBC CoreMark-PRO benchmark contains five prevalent integer workloads and four popular floating-point workloads. Together, EEMBC CoreMark and CoreMark-PRO provide a standard benchmark covering the spectrum from low-end microcontrollers to high-performance computing processors. While CoreMark stresses the CPU pipeline, CoreMark-PRO tests the entire processor, adding comprehensive support for multicore technology, a combination of integer and floating-point workloads, and data sets for utilizing larger memory subsystems. CoreMark®-PRO is a comprehensive, advanced processor benchmark that works with and enhances the market-proven industry-standard EEMBC CoreMark® benchmark.
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