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more parallelization

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This commit is contained in:
Charles Chen
2022-12-16 11:12:44 -05:00
parent 5d6985b799
commit c48c1b97a5
2 changed files with 16 additions and 27 deletions
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26
arithmetic/src/multilinear_polynomial.rs
View File

@@ -160,16 +160,9 @@ fn fix_one_variable_helper<F: Field>(data: &[F], nv: usize, point: &F) -> Vec<F>
} }
#[cfg(feature = "parallel")] #[cfg(feature = "parallel")]
if nv >= 13 { res.par_iter_mut().enumerate().for_each(|(i, x)| {
// on my computer we parallelization doesn't help till nv >= 13 *x = data[i << 1] + (data[(i << 1) + 1] - data[i << 1]) * point;
res.par_iter_mut().enumerate().for_each(|(i, x)| { });
*x = data[i << 1] + (data[(i << 1) + 1] - data[i << 1]) * point;
});
} else {
for i in 0..(1 << (nv - 1)) {
res[i] = data[i << 1] + (data[(i << 1) + 1] - data[i << 1]) * point;
}
}
res res
} }
@@ -279,16 +272,9 @@ fn fix_last_variable_helper<F: Field>(data: &[F], nv: usize, point: &F) -> Vec<F
} }
#[cfg(feature = "parallel")] #[cfg(feature = "parallel")]
if nv >= 13 { res.par_iter_mut().enumerate().for_each(|(i, x)| {
// on my computer we parallelization doesn't help till nv >= 13 *x = data[i] + (data[i + half_len] - data[i]) * point;
res.par_iter_mut().enumerate().for_each(|(i, x)| { });
*x = data[i] + (data[i + half_len] - data[i]) * point;
});
} else {
for b in 0..(1 << (nv - 1)) {
res[b] = data[b] + (data[b + half_len] - data[b]) * point;
}
}
res res
} }

17
subroutines/src/pcs/multilinear_kzg/batching.rs
View File

@@ -17,6 +17,7 @@ use arithmetic::{build_eq_x_r_vec, DenseMultilinearExtension, VPAuxInfo, Virtual
use ark_ec::{msm::VariableBaseMSM, PairingEngine, ProjectiveCurve}; use ark_ec::{msm::VariableBaseMSM, PairingEngine, ProjectiveCurve};
use ark_ff::PrimeField; use ark_ff::PrimeField;
use ark_std::{end_timer, log2, start_timer, One, Zero}; use ark_std::{end_timer, log2, start_timer, One, Zero};
use rayon::prelude::{IntoParallelRefIterator, ParallelIterator};
use std::{marker::PhantomData, sync::Arc}; use std::{marker::PhantomData, sync::Arc};
use transcript::IOPTranscript; use transcript::IOPTranscript;
@@ -87,13 +88,15 @@ where
end_timer!(timer); end_timer!(timer);
let timer = start_timer!(|| format!("compute tilde eq for {} points", points.len())); let timer = start_timer!(|| format!("compute tilde eq for {} points", points.len()));
let mut tilde_eqs = vec![]; let tilde_eqs: Vec<Arc<DenseMultilinearExtension<<E as PairingEngine>::Fr>>> = points
for point in points.iter() { .par_iter()
let eq_b_zi = build_eq_x_r_vec(point)?; .map(|point| {
tilde_eqs.push(Arc::new(DenseMultilinearExtension::from_evaluations_vec( let eq_b_zi = build_eq_x_r_vec(point).unwrap();
num_var, eq_b_zi, Arc::new(DenseMultilinearExtension::from_evaluations_vec(
))); num_var, eq_b_zi,
} ))
})
.collect();
end_timer!(timer); end_timer!(timer);
// built the virtual polynomial for SumCheck // built the virtual polynomial for SumCheck