Struct MuonNsStep 

pub struct MuonNsStep {
    pub name: &'static str,
    pub id: String,
    pub transpose: bool,
    pub block_m: i32,
    pub block_n: i32,
    pub block_k: i32,
    pub group_m: i32,
    pub kernel_source: String,
    pub entry_point_source: String,
    pub source: String,
}

One Newton-Schulz step (in-place): X ← a·X + b·(T·X) or X ← a·X + b·(X·T).

Both cases are expressed as A @ B (no explicit transpose on B) with unit inner strides so TMA descriptors remain valid:

• !TRANSPOSE (T·X): A = T [M, K], B = X [K, N], K = M.
• TRANSPOSE (X·T): A = X [M, K], B = T [K, N], K = N.

The GEMM result is fused with the elementwise update in one store.

• stride_tm: row stride of T (= M for !TRANSPOSE, = N for TRANSPOSE).
• stride_xm = N (row-major X, always [M, N]).

Grid: [ceil(M/BLOCK_M) × ceil(N/BLOCK_N) grouped by GROUP_M, 1, 1].

Fields

name: &'static str

The kernel function’s name (e.g. "flash_attention2_forward").

id: String

Unique kernel identifier: fn_name + dtype(s) + const values joined by “__”.

transpose: bool

Compile-time kernel constant, from the annotated fn’s const generics.

block_m: i32

Compile-time kernel constant, from the annotated fn’s const generics.

block_n: i32

Compile-time kernel constant, from the annotated fn’s const generics.

block_k: i32

Compile-time kernel constant, from the annotated fn’s const generics.

group_m: i32

Compile-time kernel constant, from the annotated fn’s const generics.

kernel_source: String

The original kernel function source.

entry_point_source: String

The Rust source of the generated C-ABI entry-point wrapper function.

source: String

Combined source (kernel_source + "\n\n" + entry_point_source); used by the Kernel trait.

Implementations

impl MuonNsStep

pub fn new( transpose: bool, block_m: i32, block_n: i32, block_k: i32, group_m: i32, ) -> Self

Constructs a new kernel instance for these compile-time parameters.

Trait Implementations

impl Kernel for MuonNsStep

type Args<'__a> = (*mut f32, *mut f32, i32, i32, i32, i32, f32, f32)

This kernel’s launch-argument tuple type.

fn id(&self) -> String

A content hash of this kernel’s source, used as a cache key.

fn name(&self) -> &str

This kernel’s name.

fn source(&self) -> &str

This kernel’s full source (DSL + kernel body + entry point wrapper).

fn kernel_source(&self) -> &str

This kernel’s body source, without the entry-point wrapper.

fn entry_point_source(&self) -> &str

Returns the Rust source of the generated C-ABI entry-point wrapper function.

fn entry_point_name(&self) -> String

Returns the PTX symbol name for this kernel: "{name}_entry_point".