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feat: avm logup (#5577)
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relevant codegen pr AztecProtocol/powdr#54
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Maddiaa0 authored Apr 9, 2024
1 parent fb66426 commit 7e4e9b9
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Showing 23 changed files with 624 additions and 220 deletions.
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Expand Up @@ -60,7 +60,7 @@ class incl_main_tag_err_lookup_settings {
* @brief The polynomial degree of the relation telling us if the inverse polynomial value needs to be computed
*
*/
static constexpr size_t INVERSE_EXISTS_POLYNOMIAL_DEGREE = 2;
static constexpr size_t INVERSE_EXISTS_POLYNOMIAL_DEGREE = 4;

/**
* @brief The degree of the read term if implemented arbitrarily. This value is not used by basic and scaled read
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Expand Up @@ -60,7 +60,7 @@ class incl_mem_tag_err_lookup_settings {
* @brief The polynomial degree of the relation telling us if the inverse polynomial value needs to be computed
*
*/
static constexpr size_t INVERSE_EXISTS_POLYNOMIAL_DEGREE = 2;
static constexpr size_t INVERSE_EXISTS_POLYNOMIAL_DEGREE = 4;

/**
* @brief The degree of the read term if implemented arbitrarily. This value is not used by basic and scaled read
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Expand Up @@ -60,7 +60,7 @@ class lookup_byte_lengths_lookup_settings {
* @brief The polynomial degree of the relation telling us if the inverse polynomial value needs to be computed
*
*/
static constexpr size_t INVERSE_EXISTS_POLYNOMIAL_DEGREE = 2;
static constexpr size_t INVERSE_EXISTS_POLYNOMIAL_DEGREE = 4;

/**
* @brief The degree of the read term if implemented arbitrarily. This value is not used by basic and scaled read
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Expand Up @@ -60,7 +60,7 @@ class lookup_byte_operations_lookup_settings {
* @brief The polynomial degree of the relation telling us if the inverse polynomial value needs to be computed
*
*/
static constexpr size_t INVERSE_EXISTS_POLYNOMIAL_DEGREE = 2;
static constexpr size_t INVERSE_EXISTS_POLYNOMIAL_DEGREE = 4;

/**
* @brief The degree of the read term if implemented arbitrarily. This value is not used by basic and scaled read
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2 changes: 1 addition & 1 deletion barretenberg/cpp/src/barretenberg/sumcheck/sumcheck.hpp
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Expand Up @@ -103,7 +103,7 @@ template <typename Flavor> class SumcheckProver {
pow_univariate.partially_evaluate(round_challenge);
round.round_size = round.round_size >> 1; // TODO(#224)(Cody): Maybe partially_evaluate should do this and
// release memory? // All but final round
// We operate on partially_evaluated_polynomials in place.
// We operate on partially_evaluated_polynomials in place.
for (size_t round_idx = 1; round_idx < multivariate_d; round_idx++) {
// Write the round univariate to the transcript
round_univariate =
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Expand Up @@ -108,7 +108,7 @@ template <typename Flavor> class SumcheckProverRound {
{
BB_OP_COUNT_TIME();

// Compute the constant contribution of pow polynomials for each edge. This is the product of the partial
// Compute the constant contribution of pow polynomials for each edge. This is the product of the partial
// evaluation result c_l (i.e. pow(u_0,...,u_{l-1})) where u_0,...,u_{l-1} are the verifier challenges from
// previous rounds) and the elements of pow(\vec{β}) not containing β_0,..., β_l.
std::vector<FF> pow_challenges(round_size >> 1);
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Expand Up @@ -82,7 +82,6 @@ template <typename Flavor> bool UltraVerifier_<Flavor>::verify_proof(const HonkP
transcript);
auto pcs_verified = key->pcs_verification_key->pairing_check(pairing_points[0], pairing_points[1]);
return sumcheck_verified.value() && pcs_verified;
;
}

template class UltraVerifier_<UltraFlavor>;
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Expand Up @@ -345,17 +345,7 @@ class AvmCircuitBuilder {
polys.avm_mem_val[i] = rows[i].avm_mem_val;
polys.avm_mem_w_in_tag[i] = rows[i].avm_mem_w_in_tag;
polys.perm_main_alu[i] = rows[i].perm_main_alu;
polys.perm_main_bin[i] = rows[i].perm_main_bin;
polys.perm_main_mem_a[i] = rows[i].perm_main_mem_a;
polys.perm_main_mem_b[i] = rows[i].perm_main_mem_b;
polys.perm_main_mem_c[i] = rows[i].perm_main_mem_c;
polys.perm_main_mem_ind_a[i] = rows[i].perm_main_mem_ind_a;
polys.perm_main_mem_ind_b[i] = rows[i].perm_main_mem_ind_b;
polys.perm_main_mem_ind_c[i] = rows[i].perm_main_mem_ind_c;
polys.lookup_byte_lengths[i] = rows[i].lookup_byte_lengths;
polys.lookup_byte_operations[i] = rows[i].lookup_byte_operations;
polys.incl_main_tag_err[i] = rows[i].incl_main_tag_err;
polys.incl_mem_tag_err[i] = rows[i].incl_mem_tag_err;

polys.lookup_byte_lengths_counts[i] = rows[i].lookup_byte_lengths_counts;
polys.lookup_byte_operations_counts[i] = rows[i].lookup_byte_operations_counts;
polys.incl_main_tag_err_counts[i] = rows[i].incl_main_tag_err_counts;
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Expand Up @@ -31,7 +31,7 @@ AvmProver AvmComposer::create_prover(CircuitConstructor& circuit_constructor)
compute_witness(circuit_constructor);
compute_commitment_key(circuit_constructor.get_circuit_subgroup_size());

AvmProver output_state(proving_key, commitment_key);
AvmProver output_state(proving_key, proving_key->commitment_key);

return output_state;
}
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Original file line number Diff line number Diff line change
Expand Up @@ -62,7 +62,7 @@ class AvmComposer {

void compute_commitment_key(size_t circuit_size)
{
commitment_key = std::make_shared<CommitmentKey>(circuit_size);
proving_key->commitment_key = std::make_shared<CommitmentKey>(circuit_size);
};
};

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100 changes: 96 additions & 4 deletions barretenberg/cpp/src/barretenberg/vm/generated/avm_flavor.hpp
Original file line number Diff line number Diff line change
Expand Up @@ -17,6 +17,10 @@
#include "barretenberg/relations/generated/avm/avm_binary.hpp"
#include "barretenberg/relations/generated/avm/avm_main.hpp"
#include "barretenberg/relations/generated/avm/avm_mem.hpp"
#include "barretenberg/relations/generated/avm/incl_main_tag_err.hpp"
#include "barretenberg/relations/generated/avm/incl_mem_tag_err.hpp"
#include "barretenberg/relations/generated/avm/lookup_byte_lengths.hpp"
#include "barretenberg/relations/generated/avm/lookup_byte_operations.hpp"
#include "barretenberg/relations/generated/avm/perm_main_alu.hpp"
#include "barretenberg/relations/generated/avm/perm_main_bin.hpp"
#include "barretenberg/relations/generated/avm/perm_main_mem_a.hpp"
Expand Down Expand Up @@ -52,6 +56,19 @@ class AvmFlavor {
// the unshifted and one for the shifted
static constexpr size_t NUM_ALL_ENTITIES = 159;

using GrandProductRelations = std::tuple<perm_main_alu_relation<FF>,
perm_main_bin_relation<FF>,
perm_main_mem_a_relation<FF>,
perm_main_mem_b_relation<FF>,
perm_main_mem_c_relation<FF>,
perm_main_mem_ind_a_relation<FF>,
perm_main_mem_ind_b_relation<FF>,
perm_main_mem_ind_c_relation<FF>,
incl_main_tag_err_relation<FF>,
incl_mem_tag_err_relation<FF>,
lookup_byte_lengths_relation<FF>,
lookup_byte_operations_relation<FF>>;

using Relations = std::tuple<Avm_vm::avm_alu<FF>,
Avm_vm::avm_binary<FF>,
Avm_vm::avm_main<FF>,
Expand All @@ -63,15 +80,19 @@ class AvmFlavor {
perm_main_mem_c_relation<FF>,
perm_main_mem_ind_a_relation<FF>,
perm_main_mem_ind_b_relation<FF>,
perm_main_mem_ind_c_relation<FF>>;
perm_main_mem_ind_c_relation<FF>,
incl_main_tag_err_relation<FF>,
incl_mem_tag_err_relation<FF>,
lookup_byte_lengths_relation<FF>,
lookup_byte_operations_relation<FF>>;

static constexpr size_t MAX_PARTIAL_RELATION_LENGTH = compute_max_partial_relation_length<Relations>();

// BATCHED_RELATION_PARTIAL_LENGTH = algebraic degree of sumcheck relation *after* multiplying by the `pow_zeta`
// random polynomial e.g. For \sum(x) [A(x) * B(x) + C(x)] * PowZeta(X), relation length = 2 and random relation
// length = 3
static constexpr size_t BATCHED_RELATION_PARTIAL_LENGTH = MAX_PARTIAL_RELATION_LENGTH + 1;
static constexpr size_t NUM_RELATIONS = std::tuple_size<Relations>::value;
static constexpr size_t NUM_RELATIONS = std::tuple_size_v<Relations>;

template <size_t NUM_INSTANCES>
using ProtogalaxyTupleOfTuplesOfUnivariates =
Expand Down Expand Up @@ -377,7 +398,6 @@ class AvmFlavor {
incl_main_tag_err_counts,
incl_mem_tag_err_counts };
};
RefVector<DataType> get_sorted_polynomials() { return {}; };
};

template <typename DataType> class AllEntities {
Expand Down Expand Up @@ -899,9 +919,56 @@ class AvmFlavor {

// The plookup wires that store plookup read data.
std::array<PolynomialHandle, 0> get_table_column_wires() { return {}; };

void compute_logderivative_inverses(const RelationParameters<FF>& relation_parameters)
{
ProverPolynomials prover_polynomials = ProverPolynomials(*this);

bb::compute_logderivative_inverse<AvmFlavor, perm_main_alu_relation<FF>>(
prover_polynomials, relation_parameters, this->circuit_size);
bb::compute_logderivative_inverse<AvmFlavor, perm_main_bin_relation<FF>>(
prover_polynomials, relation_parameters, this->circuit_size);
bb::compute_logderivative_inverse<AvmFlavor, perm_main_mem_a_relation<FF>>(
prover_polynomials, relation_parameters, this->circuit_size);
bb::compute_logderivative_inverse<AvmFlavor, perm_main_mem_b_relation<FF>>(
prover_polynomials, relation_parameters, this->circuit_size);
bb::compute_logderivative_inverse<AvmFlavor, perm_main_mem_c_relation<FF>>(
prover_polynomials, relation_parameters, this->circuit_size);
bb::compute_logderivative_inverse<AvmFlavor, perm_main_mem_ind_a_relation<FF>>(
prover_polynomials, relation_parameters, this->circuit_size);
bb::compute_logderivative_inverse<AvmFlavor, perm_main_mem_ind_b_relation<FF>>(
prover_polynomials, relation_parameters, this->circuit_size);
bb::compute_logderivative_inverse<AvmFlavor, perm_main_mem_ind_c_relation<FF>>(
prover_polynomials, relation_parameters, this->circuit_size);
bb::compute_logderivative_inverse<AvmFlavor, incl_main_tag_err_relation<FF>>(
prover_polynomials, relation_parameters, this->circuit_size);
bb::compute_logderivative_inverse<AvmFlavor, incl_mem_tag_err_relation<FF>>(
prover_polynomials, relation_parameters, this->circuit_size);
bb::compute_logderivative_inverse<AvmFlavor, lookup_byte_lengths_relation<FF>>(
prover_polynomials, relation_parameters, this->circuit_size);
bb::compute_logderivative_inverse<AvmFlavor, lookup_byte_operations_relation<FF>>(
prover_polynomials, relation_parameters, this->circuit_size);
}
};

using VerificationKey = VerificationKey_<PrecomputedEntities<Commitment>, VerifierCommitmentKey>;
class VerificationKey : public VerificationKey_<PrecomputedEntities<Commitment>, VerifierCommitmentKey> {
public:
VerificationKey() = default;
VerificationKey(const size_t circuit_size, const size_t num_public_inputs)
: VerificationKey_(circuit_size, num_public_inputs)
{}

VerificationKey(ProvingKey& proving_key)
{
this->pcs_verification_key = std::make_shared<VerifierCommitmentKey>();
this->circuit_size = proving_key.circuit_size;
this->log_circuit_size = numeric::get_msb(this->circuit_size);

for (auto [polynomial, commitment] : zip_view(proving_key.get_precomputed_polynomials(), this->get_all())) {
commitment = proving_key.commitment_key->commit(polynomial);
}
}
};

using FoldedPolynomials = AllEntities<std::vector<FF>>;

Expand All @@ -923,6 +990,20 @@ class AvmFlavor {
ProverPolynomials(ProverPolynomials&& o) noexcept = default;
ProverPolynomials& operator=(ProverPolynomials&& o) noexcept = default;
~ProverPolynomials() = default;

// NOTE: copied from goblin ultra
ProverPolynomials(ProvingKey& proving_key)
{
for (auto [prover_poly, key_poly] : zip_view(this->get_unshifted(), proving_key.get_all())) {
ASSERT(flavor_get_label(*this, prover_poly) == flavor_get_label(proving_key, key_poly));
prover_poly = key_poly.share();
}
for (auto [prover_poly, key_poly] : zip_view(this->get_shifted(), proving_key.get_to_be_shifted())) {
ASSERT(flavor_get_label(*this, prover_poly) == (flavor_get_label(proving_key, key_poly) + "_shift"));
prover_poly = key_poly.shifted();
}
}

[[nodiscard]] size_t get_polynomial_size() const { return avm_alu_alu_sel.size(); }
/**
* @brief Returns the evaluations of all prover polynomials at one point on the boolean hypercube, which
Expand Down Expand Up @@ -963,6 +1044,12 @@ class AvmFlavor {
*/
using ExtendedEdges = ProverUnivariates<MAX_PARTIAL_RELATION_LENGTH>;

/**
* @brief A container for the witness commitments.
*
*/
using WitnessCommitments = WitnessEntities<Commitment>;

class CommitmentLabels : public AllEntities<std::string> {
private:
using Base = AllEntities<std::string>;
Expand Down Expand Up @@ -1252,6 +1339,8 @@ class AvmFlavor {
Commitment avm_mem_tag_err;
Commitment avm_mem_val;
Commitment avm_mem_w_in_tag;

// Perm inverses
Commitment perm_main_alu;
Commitment perm_main_bin;
Commitment perm_main_mem_a;
Expand All @@ -1260,10 +1349,13 @@ class AvmFlavor {
Commitment perm_main_mem_ind_a;
Commitment perm_main_mem_ind_b;
Commitment perm_main_mem_ind_c;
// Lookup inverses
Commitment lookup_byte_lengths;
Commitment lookup_byte_operations;
Commitment incl_main_tag_err;
Commitment incl_mem_tag_err;

// Lookup counts
Commitment lookup_byte_lengths_counts;
Commitment lookup_byte_operations_counts;
Commitment incl_main_tag_err_counts;
Expand Down
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