chore: Add env var to disable bb cleanup

[spalladino]

Adds a new BB_SKIP_CLEANUP boolean env var to stop bb native prover from cleaning up tmp dirs. Useful for retrieving files after a failed run.

[ludamad]

Any reason this can't be unified with AVM_PRESERVE_WORKING_DIR into just one flag?

[spalladino]

Any reason this can't be unified with AVM_PRESERVE_WORKING_DIR into just one flag?

@fcarreiro is fine with removing the AVM one, so just added a commit that removes it

[AztecBot]

Benchmark results

Metrics with a significant change:

• avm_simulation_time_ms (Token:mint_public): 42.0 (-41%)
• avm_simulation_time_ms (Token:assert_minter_and_mint): 68.4 (+59%)
• avm_simulation_time_ms (Token:transfer_public): 29.5 (+48%)

Detailed results

All benchmarks are run on txs on the Benchmarking contract on the repository. Each tx consists of a batch call to create_note and increment_balance, which guarantees that each tx has a private call, a nested private call, a public call, and a nested public call, as well as an emitted private note, an unencrypted log, and public storage read and write.

This benchmark source data is available in JSON format on S3 here.

Proof generation

Each column represents the number of threads used in proof generation.

Metric	1 threads	4 threads	16 threads	32 threads	64 threads
proof_construction_time_sha256_ms	5,767	1,553	692	755	767
proof_construction_time_sha256_30_ms	11,849	3,177	1,402 (-1%)	1,451	1,475
proof_construction_time_sha256_100_ms	44,131 (-1%)	12,519 (+1%)	5,842 (-1%)	5,734	5,593
proof_construction_time_poseidon_hash_ms	78.0	34.0	34.0	59.0	87.0 (-1%)
proof_construction_time_poseidon_hash_30_ms	1,531	420	203 (+2%)	226 (+3%)	278 (+4%)
proof_construction_time_poseidon_hash_100_ms	5,664	1,530	678 (+1%)	735 (+3%)	750

L2 block published to L1

Each column represents the number of txs on an L2 block published to L1.

Metric	4 txs	8 txs	16 txs
l1_rollup_calldata_size_in_bytes	4,324	7,844	14,852
l1_rollup_calldata_gas	49,684	92,452	177,440
l1_rollup_execution_gas	1,294,347	2,042,083	3,869,110
l2_block_processing_time_in_ms	260 (+1%)	448 (+1%)	831 (+3%)
l2_block_building_time_in_ms	9,356	18,148	36,385
l2_block_rollup_simulation_time_in_ms	9,355	18,148	36,384
l2_block_public_tx_process_time_in_ms	7,892	16,600	34,796

L2 chain processing

Each column represents the number of blocks on the L2 chain where each block has 8 txs.

Metric	3 blocks	5 blocks
node_history_sync_time_in_ms	2,992	3,872 (+1%)
node_database_size_in_bytes	12,709,968	16,814,160
pxe_database_size_in_bytes	16,254	26,813

Circuits stats

Stats on running time and I/O sizes collected for every kernel circuit run across all benchmarks.

Circuit	simulation_time_in_ms	witness_generation_time_in_ms	input_size_in_bytes	output_size_in_bytes	proving_time_in_ms
private-kernel-init	95.5	387 (-1%)	21,846	44,858	N/A
private-kernel-inner	174 (+2%)	691	72,545	45,005	N/A
private-kernel-reset-tiny	504	1,193	69,614	44,844	N/A
private-kernel-tail	271	198 (+2%)	50,760	52,256	N/A
base-parity	5.55 (+1%)	N/A	160	96.0	N/A
root-parity	33.7 (+2%)	N/A	69,084	96.0	N/A
base-rollup	2,857	N/A	187,817	664	N/A
root-rollup	38.5	N/A	54,525	716	N/A
public-kernel-setup	100 (+1%)	N/A	103,760	71,222	N/A
public-kernel-app-logic	106	N/A	103,599	71,222	N/A
public-kernel-tail	570	N/A	409,190	16,414	N/A
private-kernel-reset-small	486	N/A	66,533	45,629	N/A
private-kernel-tail-to-public	1,312	711 (+2%)	507,554	1,697	N/A
public-kernel-teardown	94.4 (-2%)	N/A	104,005	71,222	N/A
merge-rollup	19.4 (+2%)	N/A	35,742	664	N/A
undefined	N/A	N/A	N/A	N/A	66,814 (-1%)

Stats on running time collected for app circuits

Function	input_size_in_bytes	output_size_in_bytes	witness_generation_time_in_ms
ContractClassRegisterer:register	1,344	11,731	342 (-1%)
ContractInstanceDeployer:deploy	1,408	11,731	18.2
MultiCallEntrypoint:entrypoint	1,920	11,731	458
FeeJuice:deploy	1,376	11,731	385 (-2%)
SchnorrAccount:constructor	1,312	11,731	173 (+1%)
SchnorrAccount:entrypoint	2,304	11,731	507
Token:privately_mint_private_note	1,280	11,731	218 (-1%)
FPC:fee_entrypoint_public	1,344	11,731	26.4 (-2%)
Token:transfer	1,312	11,731	406
Benchmarking:create_note	1,344	11,731	166 (+1%)
SchnorrAccount:verify_private_authwit	1,280	11,731	27.8 (+1%)
Token:unshield	1,376	11,731	633
FPC:fee_entrypoint_private	1,376	11,731	850

AVM Simulation

Time to simulate various public functions in the AVM.

Function	time_ms	bytecode_size_in_bytes
FeeJuice:_increase_public_balance	53.8 (-2%)	8,139
FeeJuice:set_portal	10.4 (-8%)	2,362
Token:constructor	80.3 (-2%)	31,107
FPC:constructor	51.0 (-3%)	22,380
FeeJuice:mint_public	37.5	6,150
Token:mint_public	⚠️ 42.0 (-41%)	11,720
Token:assert_minter_and_mint	⚠️ 68.4 (+59%)	8,028
AuthRegistry:set_authorized	34.9 (-2%)	4,537
FPC:prepare_fee	233 (-3%)	8,812
Token:transfer_public	⚠️ 29.5 (+48%)	47,374
FPC:pay_refund	63.3 (+11%)	12,114
Benchmarking:increment_balance	971	7,450
Token:_increase_public_balance	39.8 (-1%)	8,960
FPC:pay_refund_with_shielded_rebate	66.3 (-2%)	12,663

Public DB Access

Time to access various public DBs.

Function	time_ms
get-nullifier-index	0.164 (-2%)

Tree insertion stats

The duration to insert a fixed batch of leaves into each tree type.

Metric	1 leaves	16 leaves	64 leaves	128 leaves	256 leaves	512 leaves	1024 leaves
batch_insert_into_append_only_tree_16_depth_ms	2.21 (+1%)	3.86 (-1%)	N/A	N/A	N/A	N/A	N/A
batch_insert_into_append_only_tree_16_depth_hash_count	16.8	31.7	N/A	N/A	N/A	N/A	N/A
batch_insert_into_append_only_tree_16_depth_hash_ms	0.114 (+1%)	0.109 (-1%)	N/A	N/A	N/A	N/A	N/A
batch_insert_into_append_only_tree_32_depth_ms	N/A	N/A	11.5	17.9 (-4%)	32.1 (+3%)	59.3	114 (-1%)
batch_insert_into_append_only_tree_32_depth_hash_count	N/A	N/A	95.9	159	287	543	1,055
batch_insert_into_append_only_tree_32_depth_hash_ms	N/A	N/A	0.110 (+1%)	0.104 (-4%)	0.104 (+2%)	0.102	0.102 (-1%)
batch_insert_into_indexed_tree_20_depth_ms	N/A	N/A	14.4	25.8	44.2	83.3 (+2%)	168 (+2%)
batch_insert_into_indexed_tree_20_depth_hash_count	N/A	N/A	109	207	355	691	1,363
batch_insert_into_indexed_tree_20_depth_hash_ms	N/A	N/A	0.109	0.104	0.107 (-1%)	0.103 (+2%)	0.106 (+4%)
batch_insert_into_indexed_tree_40_depth_ms	N/A	N/A	16.4 (+1%)	N/A	N/A	N/A	N/A
batch_insert_into_indexed_tree_40_depth_hash_count	N/A	N/A	132	N/A	N/A	N/A	N/A
batch_insert_into_indexed_tree_40_depth_hash_ms	N/A	N/A	0.106 (+1%)	N/A	N/A	N/A	N/A

Miscellaneous

Transaction sizes based on how many contract classes are registered in the tx.

Metric	0 registered classes	1 registered classes
tx_size_in_bytes	64,779	668,997

Transaction size based on fee payment method

| Metric | |
| - | |