Topic: "Multidimensional Arrays in C++"Speaker: Paul Preney, SHARCNETVideo link --- The C++ 2023 standard has std::mdspan which provides a light-weight non-owning multidimensional view of a contiguous single-dimensioned array. This enables the reinterpretation of an underlying contiguous array as a multi-dimensional array with support for different memory layouts (e.g., C and Fortran) and accessing elements (e.g., directly, using atomics, etc.). As found in other programming languages, subset views / "slices" are also possible. One does not need to use the latest compiler tools or C++ standard: one can use mdspan using a reference implementation that has been backported to C++17 and C++14 as well with NVIDIA's CUDA and NVHPC tools. This talk will discuss how to use mdspan in C++ programs. ---The Compute Ontario Colloquia are weekly Zoom presentations on Advanced Research Computing, High Performance Computing, Research Data Management, and Research Software topics, delivered by staff from three Compute Ontario consortia (CAC, SciNet, SHARCNET) and guest speakers. The series began January 2023 and superseded similar series previously delivered by individual consortia (e.g. General Interest Seminars by SHARCNET or User Group Meeting TechTalks by SciNet). The colloquia are one hour long and include time for questions. No registration is required. Presentations are usually recorded and uploaded to the hosting consortium video channel (colloquia hosted by SHARCNET go to our youtube channel).