Dear C++ Fans,
for our April Meetup Matthias Noack will talk about SIMD Programming with C++
As usual we start socializing at 19:00h and the talk starts at 20:00h.
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Abstract:
Most modern CPUs draw their number-crunching capabilities from hardware data-parallelism provided by their Single Instruction Multiple Data (SIMD) instruction set extensions. Intel has MMX, SSE, and AVX; AMD introduced 3DNow!; IBM has AltiVec, VMX and VSX; and on ARM there's NEON and soon SVE. Although SIMD extensions have been around for more than 20 years now, writing code that makes good use of them still is a tough problem.
The talk will provide an introduction to the SIMD execution model, and provide a comparative overview of SIMD programming approaches from low-level intrinsics over OpenMP compiler directives towards C++ SIMD-type abstractions. The second part of the talk covers the dependency of efficient SIMD vectorisation on the data's memory layout.
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Bio:
Matthias works at the Supercomputing department at Zuse Institute Berlin (ZIB), mostly on methods to make scientific code run faster, ideally in a portable way.
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