Struct RpropStep 

pub struct RpropStep {
    pub name: &'static str,
    pub id: String,
    pub block_size: i32,
    pub kernel_source: String,
    pub entry_point_source: String,
    pub source: String,
}

Rprop step (resilient backpropagation).

sign      = g * prev_g          (product of current and previous gradient)
step_size = step_size * eta_plus   if sign > 0
          = step_size * eta_minus  if sign < 0
          = step_size              otherwise
step_size = clamp(step_size, step_min, step_max)
g_masked  = 0                    if sign < 0 (gradient reversal: skip update)
          = g                    otherwise
p        -= sign(g_masked) * step_size
prev_g    = g_masked

Grid: [ceil(n_elements / BLOCK_SIZE), 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 “__”.

block_size: 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 RpropStep

pub fn new(block_size: i32) -> Self

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

Trait Implementations

impl Kernel for RpropStep

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