update halo2curves to 0.6.0

.github/workflows/ci.yml

@@ -19,7 +19,7 @@ jobs:
           - feature_set: basic
             features: batch,dev-graph,gadget-traces
           - feature_set: all
-            features: batch,dev-graph,gadget-traces,multicore,test-dev-graph,thread-safe-region,sanity-checks,circuit-params
+            features: batch,dev-graph,gadget-traces,test-dev-graph,thread-safe-region,sanity-checks,circuit-params
 
     steps:
       - uses: actions/checkout@v3

README.md

@@ -13,12 +13,11 @@ minor version bump.
 
 ## Controlling parallelism
 
-`halo2` currently uses [rayon](https://github.com/rayon-rs/rayon) for parallel computation.
-The `RAYON_NUM_THREADS` environment variable can be used to set the number of threads.
+`halo2` currently uses [rayon](https://github.com/rayon-rs/rayon) for parallel computation. The `RAYON_NUM_THREADS` environment variable can be used to set the number of threads.
 
-You can disable `rayon` by disabling the `"multicore"` feature.
-Warning! Halo2 will lose access to parallelism if you disable the `"multicore"` feature.
-This will significantly degrade performance.
+When compiling to WASM-targets, notice that since version `1.7`, `rayon` will fallback automatically (with no need to handle features) to require `getrandom` in order to be able to work. For more info related to WASM-compilation.
+
+See: [Rayon: Usage with WebAssembly](https://github.com/rayon-rs/rayon#usage-with-webassembly) for more 
 
 ## License
 

halo2/Cargo.toml

@@ -19,7 +19,7 @@ all-features = true
 rustdoc-args = ["--cfg", "docsrs", "--html-in-header", "katex-header.html"]
 
 [dependencies]
-halo2_proofs = { version = "0.2", path = "../halo2_proofs", default-features = false }
+halo2_proofs = { version = "0.3", path = "../halo2_proofs", default-features = false }
 
 [lib]
 bench = false

halo2_proofs/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "halo2_proofs"
-version = "0.2.0"
+version = "0.3.0"
 authors = [
     "Sean Bowe <sean@electriccoin.co>",
     "Ying Tong Lai <yingtong@electriccoin.co>",
@@ -51,15 +51,15 @@ harness = false
 backtrace = { version = "0.3", optional = true }
 ff = "0.13"
 group = "0.13"
-halo2curves = { version = "0.1.0" }
+halo2curves = { version = "0.6.0", default-features = false }
 rand_core = { version = "0.6", default-features = false }
 tracing = "0.1"
 blake2b_simd = "1" # MSRV 1.66.0
 sha3 = "0.9.1"
 rand_chacha = "0.3"
-maybe-rayon = { version = "0.1.0", default-features = false }
 serde = { version = "1", optional = true, features = ["derive"] }
 serde_derive = { version = "1", optional = true}
+rayon = "1.8"
 
 # Developer tooling dependencies
 plotters = { version = "0.3.0", default-features = false, optional = true }
@@ -80,15 +80,15 @@ serde_json = "1"
 getrandom = { version = "0.2", features = ["js"] }
 
 [features]
-default = ["batch", "multicore"]
-multicore = ["maybe-rayon/threads"]
+default = ["batch", "bits"]
 dev-graph = ["plotters", "tabbycat"]
 test-dev-graph = [
     "dev-graph",
     "plotters/bitmap_backend",
     "plotters/bitmap_encoder",
     "plotters/ttf",
 ]
+bits = ["halo2curves/bits"]
 gadget-traces = ["backtrace"]
 thread-safe-region = []
 sanity-checks = []

halo2_proofs/README.md

@@ -15,9 +15,9 @@ minor version bump.
 computation. The `RAYON_NUM_THREADS` environment variable can be used to set the number of
 threads.
 
-You can disable `rayon` by disabling the `"multicore"` feature.
-Warning! Halo2 will lose access to parallelism if you disable the `"multicore"` feature.
-This will significantly degrade performance.
+When compiling to WASM-targets, notice that since version `1.7`, `rayon` will fallback automatically (with no need to handle features) to require `getrandom` in order to be able to work. For more info related to WASM-compilation.
+
+See: [Rayon: Usage with WebAssembly](https://github.com/rayon-rs/rayon#usage-with-webassembly) for more 
 
 ## License
 

halo2_proofs/benches/commit_zk.rs

@@ -7,16 +7,9 @@ use halo2curves::pasta::pallas::Scalar;
 use rand_chacha::rand_core::RngCore;
 use rand_chacha::ChaCha20Rng;
 use rand_core::SeedableRng;
+use rayon::current_num_threads;
 use std::{collections::HashMap, iter};
 
-#[cfg(feature = "multicore")]
-use maybe_rayon::current_num_threads;
-
-#[cfg(not(feature = "multicore"))]
-fn current_num_threads() -> usize {
-    1
-}
-
 fn rand_poly_serial(mut rng: ChaCha20Rng, domain: usize) -> Vec<Scalar> {
     // Sample a random polynomial of degree n - 1
     let mut random_poly = vec![Scalar::zero(); 1 << domain];

halo2_proofs/benches/dev_lookup.rs

@@ -62,7 +62,7 @@ fn criterion_benchmark(c: &mut Criterion) {
                 |mut table| {
                     for row in 0u64..(1 << 8) {
                         table.assign_cell(
-                            || format!("row {}", row),
+                            || format!("row {row}"),
                             config.table,
                             row as usize,
                             || Value::known(F::from(row + 1)),
@@ -79,7 +79,7 @@ fn criterion_benchmark(c: &mut Criterion) {
                     for offset in 0u64..(1 << 10) {
                         config.selector.enable(&mut region, offset as usize)?;
                         region.assign_advice(
-                            || format!("offset {}", offset),
+                            || format!("offset {offset}"),
                             config.advice,
                             offset as usize,
                             || Value::known(F::from((offset % 256) + 1)),

halo2_proofs/examples/circuit-layout.rs

@@ -245,7 +245,7 @@ impl<F: Field> Circuit<F> for MyCircuit<F> {
 
         for i in 0..10 {
             layouter.assign_region(
-                || format!("region_{}", i),
+                || format!("region_{i}"),
                 |mut region| {
                     let a: Value<Assigned<_>> = self.a.into();
                     let mut a_squared = Value::unknown();

halo2_proofs/examples/proof-size.rs

@@ -53,7 +53,7 @@ impl Circuit<Fp> for TestCircuit {
             |mut table| {
                 for row in 0u64..(1 << 8) {
                     table.assign_cell(
-                        || format!("row {}", row),
+                        || format!("row {row}"),
                         config.table,
                         row as usize,
                         || Value::known(Fp::from(row + 1)),
@@ -70,7 +70,7 @@ impl Circuit<Fp> for TestCircuit {
                 for offset in 0u64..(1 << 10) {
                     config.selector.enable(&mut region, offset as usize)?;
                     region.assign_advice(
-                        || format!("offset {}", offset),
+                        || format!("offset {offset}"),
                         config.advice,
                         offset as usize,
                         || Value::known(Fp::from((offset % 256) + 1)),

halo2_proofs/examples/shuffle.rs

@@ -168,7 +168,7 @@ impl<F: Field, const W: usize, const H: usize> Circuit<F> for MyCircuit<F, W, H>
                 {
                     for (offset, &value) in values.transpose_array().iter().enumerate() {
                         region.assign_advice(
-                            || format!("original[{}][{}]", idx, offset),
+                            || format!("original[{idx}][{offset}]"),
                             column,
                             offset,
                             || value,
@@ -183,7 +183,7 @@ impl<F: Field, const W: usize, const H: usize> Circuit<F> for MyCircuit<F, W, H>
                 {
                     for (offset, &value) in values.transpose_array().iter().enumerate() {
                         region.assign_advice(
-                            || format!("shuffled[{}][{}]", idx, offset),
+                            || format!("shuffled[{idx}][{offset}]"),
                             column,
                             offset,
                             || value,
@@ -233,12 +233,7 @@ impl<F: Field, const W: usize, const H: usize> Circuit<F> for MyCircuit<F, W, H>
                     },
                 );
                 for (offset, value) in z.transpose_vec(H + 1).into_iter().enumerate() {
-                    region.assign_advice(
-                        || format!("z[{}]", offset),
-                        config.z,
-                        offset,
-                        || value,
-                    )?;
+                    region.assign_advice(|| format!("z[{offset}]"), config.z, offset, || value)?;
                 }
 
                 Ok(())

halo2_proofs/examples/vector-mul.rs

@@ -178,40 +178,6 @@ impl<F: Field> NumericInstructions<F> for FieldChip<F> {
         let config = self.config();
         assert_eq!(a.len(), b.len());
 
-        #[cfg(feature = "thread-safe-region")]
-        {
-            use maybe_rayon::prelude::{
-                IndexedParallelIterator, IntoParallelRefIterator, ParallelIterator,
-            };
-            layouter.assign_region(
-                || "mul",
-                |region: Region<'_, F>| {
-                    let thread_safe_region = std::sync::Mutex::new(region);
-                    a.par_iter()
-                        .zip(b.par_iter())
-                        .enumerate()
-                        .map(|(i, (a, b))| {
-                            let mut region = thread_safe_region.lock().unwrap();
-
-                            config.s_mul.enable(&mut region, i)?;
-
-                            a.0.copy_advice(|| "lhs", &mut region, config.advice[0], i)?;
-                            b.0.copy_advice(|| "rhs", &mut region, config.advice[1], i)?;
-
-                            let value = a.0.value().copied() * b.0.value();
-
-                            // Finally, we do the assignment to the output, returning a
-                            // variable to be used in another part of the circuit.
-                            region
-                                .assign_advice(|| "lhs * rhs", config.advice[2], i, || value)
-                                .map(Number)
-                        })
-                        .collect()
-                },
-            )
-        }
-
-        #[cfg(not(feature = "thread-safe-region"))]
         layouter.assign_region(
             || "mul",
             |mut region: Region<'_, F>| {

halo2_proofs/src/circuit.rs

@@ -572,7 +572,7 @@ impl<'a, F: Field, L: Layouter<F> + 'a> Drop for NamespacedLayouter<'a, F, L> {
                     if is_second_frame {
                         // Resolve this instruction pointer to a symbol name.
                         backtrace::resolve_frame(frame, |symbol| {
-                            gadget_name = symbol.name().map(|name| format!("{:#}", name));
+                            gadget_name = symbol.name().map(|name| format!("{name:#}"));
                         });
 
                         // We are done!

halo2_proofs/src/circuit/table_layouter.rs

@@ -103,7 +103,7 @@ impl<'r, 'a, F: Field, CS: Assignment<F> + 'a> TableLayouter<F>
                 return Err(Error::TableError(TableError::OverwriteDefault(
                     column,
                     format!("{:?}", entry.0.unwrap()),
-                    format!("{:?}", value),
+                    format!("{value:?}"),
                 )))
             }
             _ => (),