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Classroom challenge: Matrix Multiplication, Performance and Scalability in OpenMP

A simple, widely known and studied problem was posed to the class students: matrix multiplication. We made an internal contest, which was to obtain the fastest serial code in which the students learned a lot about compiler optimizations, and even more, the effect of caches in code performance. The objective of the contest was to extrapoloate this exercise into a massive multicore architecture. Students were given kickstart code with a naive C using an OpenMP implemention of the problem, and a series of rules.

A Guide to Auto-vectorization with Intel® C++ Compilers

How to use the automatic vectorizer of the Intel® C/C++ Compiler to optimize your application using Intel Streaming SIMD Extensions (Intel SSE) or Intel Advanced Vector Extensions (Intel AVX).
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  • Using xilink with /Qipo and /Qparallel options may cause an Internal compiler error

    Using xilink with "ipo" and "parallel" options simultaneously with the Intel® Compiler 11.0 initial release may cause an internal compiler error.
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