fix: compute quotient commitments in parallel

src/provider/non_hiding_zeromorph.rs

@@ -22,8 +22,11 @@ use abomonation_derive::Abomonation;
 use ff::{BatchInvert, Field, PrimeField, PrimeFieldBits};
 use group::{Curve, Group as _};
 use pairing::{Engine, MillerLoopResult, MultiMillerLoop};
-use rayon::prelude::{
-  IndexedParallelIterator, IntoParallelIterator, IntoParallelRefMutIterator, ParallelIterator,
+use rayon::{
+  iter::IntoParallelRefIterator,
+  prelude::{
+    IndexedParallelIterator, IntoParallelIterator, IntoParallelRefMutIterator, ParallelIterator,
+  },
 };
 use ref_cast::RefCast;
 use serde::{de::DeserializeOwned, Deserialize, Serialize};
@@ -210,7 +213,7 @@ where
 
     // Compute and absorb commitments C_{q_k} = [q_k], k = 0,...,d-1
     let q_comms = quotients_polys
-      .iter()
+      .par_iter()
       .map(|q| UVKZGPCS::commit(&pp.commit_pp, q))
       .collect::<Result<Vec<_>, _>>()?;
     q_comms.iter().for_each(|c| transcript.absorb(b"quo", c));