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Percentage performance of MPI based NPB benchmark compared to the OpenMP benchmark implementation

Percentage performance of MPI based NPB benchmark compared to the OpenMP benchmark implementation

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Fig. 2: MG benchmark performance (higher is better) parallelised via OpenMP
Fig. 6: Percentage performance of MPI based NPB benchmark compared to...
Summary of memory behaviour for NPB benchmarks on a Xeon Plat- inum 8170
Summary of CPUs that are benchmarked in this section
For each pseudo application, the number of times faster a specific CPU...
Performance characterisation of the 64-core SG2042 RISC-V CPU for HPC
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  • Jun 2024
Whilst RISC-V has grown phenomenally quickly in embedded computing, it is yet to gain significant traction in High Performance Computing (HPC). However, as we move further into the exascale era, the flexibility offered by RISC-V has the potential to be very beneficial in future supercomputers especially as the community places an increased emphasis...
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Context 1
... there are both OpenMP and MPI implementations of the NPB benchmark suite, we are able to undertake a direct comparison. This is illustrated in Figure 6 which reports the percentage performance delivered by the MPI implementation compared to the OpenMP version, for each benchmark at different numbers of cores. It can be seen that there are significant differences in performance between OpenMP and MPI for some configurations. ...
Context 2
... can be observed, in Figure 6, that over one or two cores the benchmarks do not benefit from MPI compared to OpenMP. However, from four cores upwards the CG and FT benchmarks run faster when using MPI than OpenMP. ...

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