Struct PmuSpec 

pub struct PmuSpec {
    pub banks: usize,
    pub words_per_bank: usize,
    pub n_buffers: usize,
    pub stages: usize,
}

A PMU’s published shape.

Fields

banks: usize

words_per_bank: usize

n_buffers: usize

N-buffering factor (1 = single buffer, 2 = double buffer, …).

stages: usize

Address-datapath FU stages.

Implementations

impl PmuSpec

pub fn isca17() -> PmuSpec

ISCA’17 Table 3: 16 banks × 16 KB (4096 32-bit words), 4 address-datapath stages, single-buffered.

pub fn capacity_words(&self) -> usize

Total words.

pub fn buffer_words(&self) -> usize

Words available to ONE buffer under N-buffering (each bank’s space is split n_buffers ways; when the split is uneven the smallest region is what a tile must fit).

pub fn n_buffer_regions(&self) -> Vec<(usize, usize)>

The disjoint, exhaustive [first, last) word ranges of the N buffers in flat word addresses; the remainder of an uneven split goes to the last region so the regions always cover the capacity.

pub fn usable_words(&self, mode: BankingMode) -> usize

Words a banking mode can address: everything for strided / FIFO / duplication; a line buffer holds whole rows, ceil(width / banks) words of every row in each bank, so its capacity is the whole rows that fit — the rest of the SRAM is unaddressable in that mode.

pub fn tile_fits(&self, words: usize) -> Result<(), String>

Does a tile of words fit one buffer? Typed refusal otherwise.

Trait Implementations

impl Clone for PmuSpec

fn clone(&self) -> PmuSpec

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for PmuSpec

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for PmuSpec

fn eq(&self, other: &PmuSpec) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for PmuSpec

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for PmuSpec

impl Eq for PmuSpec

impl StructuralPartialEq for PmuSpec