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AVX-512 are 512-bit extensions to the 256-bit Advanced Vector Extensions SIMD instructions for x86 instruction set architecture (ISA) proposed by Intel in July 2013, and first implemented in the 2016 Intel Xeon Phi x200 (Knights Landing), [1] and then later in a number of AMD and other Intel CPUs (see list below).
The selected AVX512 vector register is then interpreted as a vector of indexes, causing the standard x86 base+index+displacement address calculation to be performed for each vector lane, causing one associated memory operation (prefetches in case of the AVX512PF instructions) to be performed for each active lane.
Similarly, AVX-IFMA is a VEX-coded variant of AVX512-IFMA. These extensions provide the same sets of operations as their AVX-512 counterparts, but are limited to 256-bit vectors and do not support any additional features of EVEX encoding, such as broadcasting, opmask registers or accessing more than 16 vector registers.
AVX-VNNI, a VEX-coded variant of AVX512-VNNI for 256-bit vectors AVX-512 (including FP16) is present but disabled by default to match E-cores. On early revisions of microprocessors it still can be enabled on some motherboards with some BIOS versions by disabling the E-cores.
Xeon Phi [3] is a discontinued series of x86 manycore processors designed and made by Intel.It was intended for use in supercomputers, servers, and high-end workstations. Its architecture allowed use of standard programming languages and application programming interfaces (APIs) such as OpenMP.
On machines that support the AVX2 instruction set, OpenBLAS can achieve similar performance to MKL, but there are currently almost no open source libraries comparable to MKL on CPUs with the AVX512 instruction set. OpenBLAS is a fork of GotoBLAS2, which was created by Kazushige Goto at the Texas Advanced Computing Center.
The EVEX prefix (enhanced vector extension) and corresponding coding scheme is an extension to the 32-bit x86 (IA-32) and 64-bit x86-64 (AMD64) instruction set architecture.
supports: mmx sse sse2 sse3 ssse3 sse4.1 sse4.2 aes avx avx2 fma3 sha avx512 avx512f avx512cd avx512bw avx512dq avx512vl avx512ifma avx512vbmi. marketing name