SIMD
To define a 3D vector, instead of using three X/Y/Z single-precision floating-point components, we store packed single-precision floating-point elements as a __m128 value. ⚠The structure must not have …
Understanding SIMD: Infinite Complexity of Trivial Problems
Oct 25, 2024 · While the first SIMD instruction sets were defined as early as 1966, the pain points of working with SIMD have been persistent: High-performance computing is practically reverse …
Arm Neon programming quick reference
Mar 27, 2015 · The article will also inform users which documents can be consulted if more detailed information is needed. Neon overview This section describes the Neon technology and supplies …
NEON Overview | ARM Assembly By Example
Registers If your chip has the NEON co-processor, it either also has the VFP or has the VFP integrated into the NEON co-processor. For this reason, NEON uses the same registers that the VFP uses, but …
How much effort do you have to put in to get gains from using SSE?
Jul 29, 2010 · Your data needs to be 16-byte aligned in order to get the most efficient loads/stores between memory and SSE registers - SSE does support misaligned loads/stores but there is a …
1.2 What is NEON? ARMv7 architecture introduced the Advanced SIMD extension as an optional extension to the ARMv7-A and ARMv7-R profiles. It extends the SIMD concept by defining groups of …
A Primer to SIMD Architecture: From Concept to Code
Mar 15, 2024 · Then Intel introduced Streaming SIMD Extensions or SSE instructions which operate on xmm registers. In 32-bit architecture, there were 8 xmm (xmm0 — xmm7) registers per logical core.
Optimizing NEON Performance on ARM Cortex-A35: Data Loading, …
Apr 6, 2025 · The Cortex-A35 supports the parallel execution of ARM and NEON instructions, but this requires careful programming to achieve. The processor’s in-order pipeline means that ARM and …
SSE and AVX behavior with aligned/unaligned instructions - Intel …
Dec 7, 2017 · Skylake Xeon does not appear to be able to support 2 512-bit loads plus 1 512-bit store per cycle, but the reported performance is slightly higher than 2 512-bit loads per cycle. I have not …
Data alignment for speed: myth or reality? – Daniel Lemire's blog
May 31, 2012 · Some compilers align data structures so that if you read an object using 4 bytes, its memory address is divisible by 4. There are two reasons for data alignment: Some processors …
Comprehensive Guide to Registers in Intel x86 Architecture
Can you explain the use of floating point and SIMD registers? Floating point and SIMD (Single Instruction, Multiple Data) registers, such as those in the x87 FPU, MMX, SSE, and AVX sets, are …
SIMD discovering: SSE2 and NEON - Alessandro Ribeiro
Jun 12, 2019 · Now you can take a look at the SSE2 or NEON documentation to see what instructions they have and try to come up with new SIMD parallel algorithms you need. SSE2 Intrinsics Listing
SSE 2, introduced with Pentium 4 in 2000, added support for double-precision and integer SIMD instructions. They process same 8 registers, but for type safely these are exposed in C as __m128d …