WebAssembly Single Instruction, Multiple Data (SIMD)

One of the new features in .NET7 is SIMD, a type of parallel processing recently added to WebAssembly.

SIMD is a type of computer architecture that allows a CPU to perform the same operation on multiple data points simultaneously, improving the performance of certain kinds of tasks. SIMD instructions are often used to perform vector arithmetic, in which a single instruction is applied to multiple elements of a vector simultaneously. SIMD can be beneficial for tasks such as image and video processing, where large amounts of data need to be processed quickly.

SIMD is enabled by default. To disable SIMD, we need to disable it in the project file like this:

<PropertyGroup>
  <WasmEnableSIMD>false</WasmEnableSIMD>
</PropertyGroup>

We need to use AOT compilation for SIMD to work.

This is beyond the scope of this book, but I wanted to mention it in case this is what you need for your project...