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TpCommCost

entrenar::train::transformer_trainer::tensor_parallel

Struct TpCommCost 

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pub struct TpCommCost {
    pub bytes_per_allreduce: usize,
    pub allreduces_per_block: usize,
    pub num_blocks: usize,
}
Expand description

Communication cost estimate for tensor parallelism.

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§bytes_per_allreduce: usize

Bytes per AllReduce call

§allreduces_per_block: usize

Number of AllReduce calls per block (2: attention + FFN)

§num_blocks: usize

Total blocks

Implementations§

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impl TpCommCost

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pub fn estimate(seq_len: usize, hidden_size: usize, num_blocks: usize) -> Self

Estimate TP communication cost.

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pub fn total_bytes_per_step(&self) -> usize

Total bytes communicated per training step.

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pub fn estimated_overhead_ms(&self, bandwidth_gbps: f64) -> f64

Estimated overhead in milliseconds (assumes 10 GB/s intra-node bandwidth).

Trait Implementations§

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impl Clone for TpCommCost

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fn clone(&self) -> TpCommCost

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

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

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

Formats the value using the given formatter. Read more

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