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debug_memberpointer

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  • Miro Gondrum's avatar
    4821b50f
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    Description

    On nvidia, a pointer being member of a class is triggering a page fault. This does not occur if a local pointer is set on this member pointer right before the parallel region, i.e. the member pointer is more or less aliased locally.

    AMD (e.g. Hunter)

    NVIDIA (AIA / JUWELS Booster)

    • visualize on aia fe2 with /opt/nvidia/nsight-compute/2025.1.0/ncu-ui post/aia_report.nsys-rep

    Results

    • AIA, NVIDIA Quadro RTX 6000, nvc++ 25.1 AIA profiling
    • JUWELS Booster, NVIDIA A100 JUWLES Booster profiling
    • HUNTER, AMD MI300A HUNTER profiling