Mojo struct

TileLoaderLDS

@register_passable(trivial) struct TileLoaderLDS[dtype: DType, src_layout: Layout, src_tile_layout: Layout, num_loading_warps: Int, swizzle: OptionalReg[Swizzle] = OptionalReg[Swizzle](), load_width: Int = simd_width_of[dtype]()]

Encapsulates load_to_lds with pre-computed thread positions and swizzle.

Fields

buffer (AMDBufferResource):
thread_row (Int):
thread_col (Int):
warp_id (Int):

Implemented traits

AnyType, Copyable, ImplicitlyCopyable, Movable, UnknownDestructibility

`comptime` members

`copyinitis_trivial`

comptime __copyinit__is_trivial = True

`delis_trivial`

comptime __del__is_trivial = True

`moveinitis_trivial`

comptime __moveinit__is_trivial = True

`elements_per_warp`

comptime elements_per_warp = (TileLoaderLDS[dtype, src_layout, src_tile_layout, num_loading_warps, swizzle, load_width].threads_per_warp * load_width)

`loading_threads`

comptime loading_threads = (num_loading_warps * TileLoaderLDS[dtype, src_layout, src_tile_layout, num_loading_warps, swizzle, load_width].threads_per_warp)

`loads_per_row`

comptime loads_per_row = (TileLoaderLDS[dtype, src_layout, src_tile_layout, num_loading_warps, swizzle, load_width].tile_cols // load_width)

`num_iterations`

comptime num_iterations = (TileLoaderLDS[dtype, src_layout, src_tile_layout, num_loading_warps, swizzle, load_width].tile_rows // TileLoaderLDS[dtype, src_layout, src_tile_layout, num_loading_warps, swizzle, load_width].rows_per_iteration)

`rows_per_iteration`

comptime rows_per_iteration = (TileLoaderLDS[dtype, src_layout, src_tile_layout, num_loading_warps, swizzle, load_width].loading_threads // TileLoaderLDS[dtype, src_layout, src_tile_layout, num_loading_warps, swizzle, load_width].loads_per_row)

`rows_per_warp`

comptime rows_per_warp = (TileLoaderLDS[dtype, src_layout, src_tile_layout, num_loading_warps, swizzle, load_width].elements_per_warp // TileLoaderLDS[dtype, src_layout, src_tile_layout, num_loading_warps, swizzle, load_width].tile_cols)

`stride`

comptime stride = src_layout.shape[1].value()

`subtile_cols`

comptime subtile_cols = 32

`thread_rows`

comptime thread_rows = (WARP_SIZE // TileLoaderLDS[dtype, src_layout, src_tile_layout, num_loading_warps, swizzle, load_width].threads_per_row)

`threads_per_row`

comptime threads_per_row = (32 // load_width)

`threads_per_warp`

comptime threads_per_warp = WARP_SIZE

`tile_cols`

comptime tile_cols = src_tile_layout.shape[1].value()

`tile_rows`

comptime tile_rows = src_tile_layout.shape[0].value()

Methods

`init`

__init__(src: LayoutTensor[dtype, layout, origin, address_space=address_space, element_layout=element_layout, layout_int_type=layout_int_type, linear_idx_type=linear_idx_type, masked=masked, alignment=alignment], warp_id: Int, lane_id: Int) -> Self

Pre-compute thread position with swizzle inversion for bank-conflict-free reads.

`load_tile`

load_tile[dst_layout: Layout, //](self, dst: LayoutTensor[dtype, dst_layout, MutAnyOrigin, address_space=AddressSpace.SHARED, element_layout=element_layout, layout_int_type=layout_int_type, linear_idx_type=linear_idx_type, masked=masked, alignment=alignment], src_row: Int, src_col: Int)

Load a tile from source coordinates to LDS.

Combines pre-computed thread position with source coordinates. Uses the buffer resource stored at init time. Only warps 0 to num_loading_warps-1 participate; others return immediately.

Args:

dst (LayoutTensor): Destination LDS tile.
src_row (Int): Starting row in source tensor.
src_col (Int): Starting column in source tensor (typically k_offset).

Fields​

Implemented traits​

comptime members​

__copyinit__is_trivial​

__del__is_trivial​

__moveinit__is_trivial​

elements_per_warp​

loading_threads​

loads_per_row​

num_iterations​

rows_per_iteration​

rows_per_warp​

stride​

subtile_cols​

thread_rows​

threads_per_row​

threads_per_warp​

tile_cols​

tile_rows​

Methods​

__init__​

load_tile​