feat(avm): brillig CONST of size > u128

[fcarreiro]

The AVM cannot support setting constants of field size (because the whole instruction has to fit in a field). To align Brillig with AVM bytecode, I'm changing bytecode emission for the case where the constant is > 128 bits.

The current change splits the field into two 128bit limbs, and then multiplies and adds.

[fcarreiro]

• chore(avm-transpiler): transpiler cleanup #5218
• feat(avm): brillig CONST of size > u128 #5217 👈
• master

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[AztecBot]

Benchmark results

Metrics with a significant change:

• note_trial_decrypting_time_in_ms (64): 140 (+96%)

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.

Values are compared against data from master at commit c34a299e and shown if the difference exceeds 1%.

L2 block published to L1

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

Metric	8 txs	32 txs	64 txs
l1_rollup_calldata_size_in_bytes	5,668	18,820	36,356
l1_rollup_calldata_gas	66,316	239,056	470,000
l1_rollup_execution_gas	666,997	953,966	1,337,357
l2_block_processing_time_in_ms	1,244 (-7%)	4,764 (-2%)	9,136 (-4%)
note_successful_decrypting_time_in_ms	217 (-4%)	471 (-15%)	1,011 (+8%)
note_trial_decrypting_time_in_ms	24.0 (-26%)	88.9 (+22%)	⚠️ 140 (+96%)
l2_block_building_time_in_ms	18,402 (-1%)	69,215	139,868 (+2%)
l2_block_rollup_simulation_time_in_ms	8,296	29,239 (+1%)	57,503 (+2%)
l2_block_public_tx_process_time_in_ms	10,083 (-2%)	39,915 (-1%)	82,266 (+3%)

L2 chain processing

Each column represents the number of blocks on the L2 chain where each block has 16 txs.

Metric	5 blocks	10 blocks
node_history_sync_time_in_ms	14,358 (+4%)	27,577 (+4%)
note_history_successful_decrypting_time_in_ms	1,333 (+13%)	2,427 (-2%)
note_history_trial_decrypting_time_in_ms	142 (+75%)	126 (-27%)
node_database_size_in_bytes	19,038,288	35,676,240
pxe_database_size_in_bytes	29,859	59,414

Circuits stats

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

Circuit	circuit_simulation_time_in_ms	circuit_input_size_in_bytes	circuit_output_size_in_bytes
private-kernel-init	284	44,370	27,700
private-kernel-ordering	218	52,324	14,326
base-parity	1,841 (+2%)	128	311
base-rollup	729 (+1%)	177,083	925
root-parity	1,696 (+7%)	1,244	311
root-rollup	68.6 (-1%)	4,487	789
private-kernel-inner	638	73,229	27,700
public-kernel-app-logic	451	35,262	28,215
public-kernel-tail	178 (+1%)	40,926	28,215
merge-rollup	8.30 (+1%)	2,696	925

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	512 leaves	1024 leaves	2048 leaves	4096 leaves	32 leaves
batch_insert_into_append_only_tree_16_depth_ms	10.1 (+1%)	16.1 (+1%)	N/A	N/A	N/A	N/A	N/A	N/A	N/A
batch_insert_into_append_only_tree_16_depth_hash_count	16.8	31.6	N/A	N/A	N/A	N/A	N/A	N/A	N/A
batch_insert_into_append_only_tree_16_depth_hash_ms	0.587 (+1%)	0.497 (+1%)	N/A	N/A	N/A	N/A	N/A	N/A	N/A
batch_insert_into_append_only_tree_32_depth_ms	N/A	N/A	46.1 (-1%)	77.3 (+7%)	230	443	860 (-1%)	1,758 (+3%)	N/A
batch_insert_into_append_only_tree_32_depth_hash_count	N/A	N/A	96.0	159	543	1,055	2,079	4,127	N/A
batch_insert_into_append_only_tree_32_depth_hash_ms	N/A	N/A	0.473 (-1%)	0.477 (+7%)	0.419	0.415	0.410 (-1%)	0.422 (+3%)	N/A
batch_insert_into_indexed_tree_20_depth_ms	N/A	N/A	53.6 (-2%)	111 (+4%)	334 (-2%)	660	1,307 (-1%)	2,597	N/A
batch_insert_into_indexed_tree_20_depth_hash_count	N/A	N/A	104	207	691	1,363	2,707	5,395	N/A
batch_insert_into_indexed_tree_20_depth_hash_ms	N/A	N/A	0.478 (-3%)	0.499 (+3%)	0.455 (-1%)	0.455	0.453 (-1%)	0.452	N/A
batch_insert_into_indexed_tree_40_depth_ms	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	61.1
batch_insert_into_indexed_tree_40_depth_hash_count	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	109
batch_insert_into_indexed_tree_40_depth_hash_ms	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	0.536

Miscellaneous

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

Metric	0 registered classes
tx_size_in_bytes	22,014

Transaction processing duration by data writes.

Metric	0 new note hashes	1 new note hashes
tx_pxe_processing_time_ms	3,259 (-2%)	1,750

Metric	0 public data writes	1 public data writes
tx_sequencer_processing_time_ms	12.1 (+6%)	1,262

[sirasistant]

Thanks!

[fcarreiro]

Merge activity

• Mar 15, 6:05 AM EDT: @fcarreiro started a stack merge that includes this pull request via Graphite.
• Mar 15, 6:06 AM EDT: @fcarreiro merged this pull request with Graphite.