The Intel processor-specific auto-dispatch path is usually more optimized than the baseline path. It also generates a baseline code path which can run on non-AVX processors. This option tells the compiler to generate multiple, processor-specific auto-dispatch code paths for Intel processors if there is a performance benefit.

SANDYBRIDGE, HASWELL, KNL, SKYLAKE-512: May generate instructions for processors that support the specified Intel® microarchitecture code name. These keywords are only available for Intel compilers from 18.0 and higher. Host: Tells the compiler to generate instructions for the highest instruction set available on the compilation host MIC-AVX512: On the Knights Landing many-core nodes of the Linux-Cluster, may generate Advanced Vector Extensions 5 CORE-AVX512/COMMON-AVX512: On Skylake Nodes: may generate Intel® Advanced Vector Extensions 512 CORE-AVX2: On Haswell cores of Phase2 of SuperMUC or on CollMUC2 of the Linux-Cluster: generate Advanced Vector Extensions 2. SSE4.2: On the Westmeer Fat Nodes of SuperMUC Phase1: generate SSE4.2 instructions AVX: On SandyBridge cores of the thin nodes of SuperMUC: generate Intel Advanced Vector Extensions. Enables optimizations for technical computing applications (loop-intensive code): loop optimizations and data prefetch. O2 optimizations plus more aggressive optimizations such as prefetching, scalar replacement, and loop transformations. Optimizations for speed, including global code scheduling, software pipelining, predication, and speculation. Recommended for program development and debuggingĮnables optimization for speed, while being aware of code size (e.g no loop unrolling)ĭefault optimization.

Intel c compiler flag list -c++