153 lines
4.8 KiB
Nim
153 lines
4.8 KiB
Nim
import
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confutils, stats, times,
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json, strformat,
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options, sequtils, random,
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../tests/[testutil],
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../beacon_chain/spec/[beaconstate, crypto, datatypes, digest, helpers, validator],
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../beacon_chain/[attestation_pool, extras, ssz, state_transition, fork_choice]
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proc `%`(v: uint64): JsonNode =
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if v > uint64(high(BiggestInt)): newJString($v) else: newJInt(BiggestInt(v))
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proc `%`(v: Eth2Digest): JsonNode = newJString($v)
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proc `%`(v: ValidatorSig|ValidatorPubKey): JsonNode = newJString($v)
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type Timers = enum
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tBlock = "Process non-epoch slot with block"
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tEpoch = "Process epoch slot with block"
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tHashBlock = "Tree-hash block"
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tShuffle = "Retrieve committe once using get_crosslink_committees_at_slot"
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tAttest = "Combine committee attestations"
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template withTimer(stats: var RunningStat, body: untyped) =
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let start = cpuTime()
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block:
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body
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let stop = cpuTime()
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stats.push stop - start
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template withTimerRet(stats: var RunningStat, body: untyped): untyped =
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let start = cpuTime()
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let tmp = block:
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body
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let stop = cpuTime()
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stats.push stop - start
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tmp
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proc `%`*(x: Slot): JsonNode {.borrow.}
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proc `%`*(x: Epoch): JsonNode {.borrow.}
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proc writeJson*(prefix, slot, v: auto) =
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var f: File
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defer: close(f)
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discard open(f, fmt"{prefix:04}-{humaneSlotNum(slot):08}.json", fmWrite)
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write(f, pretty(%*(v)))
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cli do(slots = 1945,
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validators = SLOTS_PER_EPOCH, # One per shard is minimum
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json_interval = SLOTS_PER_EPOCH,
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prefix = 0,
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attesterRatio {.desc: "ratio of validators that attest in each round"} = 0.9,
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validate = false):
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let
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flags = if validate: {} else: {skipValidation}
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genesisState = get_genesis_beacon_state(
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makeInitialDeposits(validators, flags), 0, Eth1Data(), flags)
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genesisBlock = get_initial_beacon_block(genesisState)
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var
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attestations: array[MIN_ATTESTATION_INCLUSION_DELAY, seq[Attestation]]
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state = genesisState
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latest_block_root = hash_tree_root(genesisBlock)
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timers: array[Timers, RunningStat]
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attesters: RunningStat
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r: Rand
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blck: BeaconBlock
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proc maybeWrite() =
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if state.slot mod json_interval.uint64 == 0:
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writeJson(prefix, state.slot, state)
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write(stdout, ":")
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else:
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write(stdout, ".")
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for i in 0..<slots:
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maybeWrite()
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let
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attestations_idx = state.slot mod MIN_ATTESTATION_INCLUSION_DELAY
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body = BeaconBlockBody(attestations: attestations[attestations_idx])
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attestations[attestations_idx] = @[]
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let t =
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if (state.slot > GENESIS_SLOT and
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(state.slot + 1) mod SLOTS_PER_EPOCH == 0): tEpoch
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else: tBlock
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withTimer(timers[t]):
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blck = addBlock(state, latest_block_root, body, flags)
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latest_block_root = withTimerRet(timers[tHashBlock]):
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hash_tree_root(blck)
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if attesterRatio > 0.0:
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# attesterRatio is the fraction of attesters that actually do their
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# work for every slot - we'll randomize it deterministically to give
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# some variation
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let scass = withTimerRet(timers[tShuffle]):
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get_crosslink_committees_at_slot(state, state.slot)
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for scas in scass:
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var
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attestation: Attestation
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first = true
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attesters.push scas.committee.len()
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withTimer(timers[tAttest]):
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for v in scas.committee:
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if (rand(r, high(int)).float * attesterRatio).int <= high(int):
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if first:
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attestation = makeAttestation(state, latest_block_root, v, flags)
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first = false
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else:
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attestation.combine(
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makeAttestation(state, latest_block_root, v, flags), flags)
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if not first:
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# add the attestation if any of the validators attested, as given
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# by the randomness. We have to delay when the attestation is
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# actually added to the block per the attestation delay rule!
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attestations[
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(state.slot + MIN_ATTESTATION_INCLUSION_DELAY - 1) mod
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MIN_ATTESTATION_INCLUSION_DELAY].add attestation
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flushFile(stdout)
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if (state.slot) mod SLOTS_PER_EPOCH == 0:
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echo &" slot: {humaneSlotNum(state.slot)} ",
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&"epoch: {humaneEpochNum(state.slot.slot_to_epoch)}"
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maybeWrite() # catch that last state as well..
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echo "done!"
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echo "Validators: ", validators, ", epoch length: ", SLOTS_PER_EPOCH
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echo "Validators per attestation (mean): ", attesters.mean
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proc fmtTime(t: float): string = &"{t * 1000 :>12.3f}, "
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echo "All time are ms"
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echo &"{\"Average\" :>12}, {\"StdDev\" :>12}, {\"Min\" :>12}, " &
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&"{\"Max\" :>12}, {\"Samples\" :>12}, {\"Test\" :>12}"
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if not validate:
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echo "Validation is turned off meaning that no BLS operations are performed"
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for t in Timers:
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echo fmtTime(timers[t].mean), fmtTime(timers[t].standardDeviationS),
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fmtTime(timers[t].min), fmtTime(timers[t].max), &"{timers[t].n :>12}, ",
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$t
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