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This commit is contained in:
wborgeaud 2022-02-17 08:26:23 +01:00
parent 56336e396d
commit 67cb5dfd58
4 changed files with 7 additions and 5 deletions
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1
plonky2/src/fri/mod.rs
View File

@ -35,6 +35,7 @@ impl FriConfig {
let reduction_arity_bits = self.reduction_strategy.reduction_arity_bits(
degree_bits,
self.rate_bits,
self.cap_height,
self.num_query_rounds,
);
FriParams {

7
plonky2/src/fri/reduction_strategies.rs
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@ -8,12 +8,12 @@ pub enum FriReductionStrategy {
/// Specifies the exact sequence of arities (expressed in bits) to use.
Fixed(Vec<usize>),
/// `ConstantArityBits(arity_bits, final_poly_bits, cap_height)` applies reductions of arity `2^arity_bits`
/// `ConstantArityBits(arity_bits, final_poly_bits)` applies reductions of arity `2^arity_bits`
/// until the polynomial degree is less than or equal to `2^final_poly_bits` or until any further
/// `arity_bits`-reduction makes the last FRI tree have height less than `cap_height`.
/// This tends to work well in the recursive setting, as it avoids needing multiple configurations
/// of gates used in FRI verification, such as `InterpolationGate`.
ConstantArityBits(usize, usize, usize),
ConstantArityBits(usize, usize),
/// `MinSize(opt_max_arity_bits)` searches for an optimal sequence of reduction arities, with an
/// optional max `arity_bits`. If this proof will have recursive proofs on top of it, a max
@ -27,12 +27,13 @@ impl FriReductionStrategy {
&self,
mut degree_bits: usize,
rate_bits: usize,
cap_height: usize,
num_queries: usize,
) -> Vec<usize> {
match self {
FriReductionStrategy::Fixed(reduction_arity_bits) => reduction_arity_bits.to_vec(),
&FriReductionStrategy::ConstantArityBits(arity_bits, final_poly_bits, cap_height) => {
&FriReductionStrategy::ConstantArityBits(arity_bits, final_poly_bits) => {
let mut result = Vec::new();
while degree_bits > final_poly_bits
&& degree_bits + rate_bits - arity_bits >= cap_height

2
plonky2/src/plonk/circuit_data.rs
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@ -73,7 +73,7 @@ impl CircuitConfig {
rate_bits: 3,
cap_height: 4,
proof_of_work_bits: 16,
reduction_strategy: FriReductionStrategy::ConstantArityBits(4, 5, 4),
reduction_strategy: FriReductionStrategy::ConstantArityBits(4, 5),
num_query_rounds: 28,
},
}

2
starky/src/config.rs
View File

@ -22,7 +22,7 @@ impl StarkConfig {
rate_bits: 1,
cap_height: 4,
proof_of_work_bits: 10,
reduction_strategy: FriReductionStrategy::ConstantArityBits(4, 5, 4),
reduction_strategy: FriReductionStrategy::ConstantArityBits(4, 5),
num_query_rounds: 90,
},
}