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CreditLatency

Struct CreditLatency 

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pub struct CreditLatency {
    pub fetch_tile: u32,
    pub credit_return: u32,
    pub service_page: u32,
}
Expand description

The latencies a bounded buffer’s credit loop is sized against, in cycles.

These are ARCHITECTURAL facts about a part, not fitted ones, and the distinction is the whole point of the type. A FIFO depth is a resource decision — too shallow stalls the producer every round, too deep spends local memory another buffer needed — and deriving it from a regression against a cycle counter makes it only as trustworthy as that counter. Ours turned out not to track work at all, which would have made every depth a function of noise. A target that cannot cite these numbers declares None and gets the vendor’s double-buffering discipline instead of an invented rate.

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§fetch_tile: u32

Cycles to fetch one tile into local memory.

§credit_return: u32

Cycles for a consumer’s credit to travel back to the producer.

§service_page: u32

Cycles the consumer spends draining one page.

Trait Implementations§

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impl Clone for CreditLatency

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fn clone(&self) -> CreditLatency

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for CreditLatency

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

Formats the value using the given formatter. Read more
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impl<'de> Deserialize<'de> for CreditLatency

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fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>
where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
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impl PartialEq for CreditLatency

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

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

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

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

Serialize this value into the given Serde serializer. Read more
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impl Copy for CreditLatency

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impl Eq for CreditLatency

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impl StructuralPartialEq for CreditLatency

Auto Trait Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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