It is important to note that DEBUG/RELEASE mode only affects the C kernel implementation, and thus the repeated runs for the assembly implementations can simply be looked at as more data to draw ...

今回は趣向を変えて、プログラミングテクニックに近い事を書きます。 最近のCPUには、SSEとかAVXとかNEONなどと呼ばれてる、要は幅の大きなレジスターを使って複数の計算を一回でやる機能…SIMDと呼ばれてる…があります。 これ、普通にソースコードを書い ...

SIMD has a long and storied history in DSP. It stands for `single instruction, multiple data` and started to be used in DSPs in the 1980s to speed up processor hungry operations like convolution, the ...

この1つの命令で複数の演算器を動かすといいうやり方は「SIMD(Single Instruction stream Multiple Data stream)」と呼ばれる。 図2.6のようにレジスタと演算器のペアを4組並べ、1つの命令ユニットからの命令をすべての組に供給すれば、同じ命令で4つのデータを同時に ...

To do so, the same kernel was programmed in C, non-SIMD x86-64, XMM-based SIMD AVX2, and YMM-based SIMD AVX2, all the while keeping track of their exact execution times to compare and contrast their ...

Is low-level programming a sin or a virtue? It depends. When programming for using vector processing on a modern processor, ideally I’d write some code in my favorite language and it would run as fast ...

Many high-performance DSP and general-purpose processors are equipped with SIMD (single-instruction, multiple data) hardware and instructions. SIMD enables processors to execute a single instruction ...

Abstract: SIMD extensions have been a feature of choice for processor manufacturers for a couple of decades. Designed to exploit data parallelism in applications at the instruction level and provide ...

初めからSIMD関係ない写真です…。おじさん的に言うと、SIMDといえばMMXから始まっている訳ですが（たぶん）、更にさかのぼるとコプロセッサーとかになると思います。流石にその頃はパソコンを持っていなかったので実感としては知らないのですが、演算 ...