Commit Graph

331 Commits

Author SHA1 Message Date
Hsiao-Wei Wang 1f7040b42b
Make previous_version=current_version 2021-09-30 16:41:05 +08:00
Danny Ryan af5eef37b2
fix am/pm issue 2021-09-24 12:29:34 -06:00
Danny Ryan 9f037180ba
add ALTAIR_FORK_EPOCH for mainnet configuration 2021-09-24 12:14:39 -06:00
Danny Ryan a3953a10fe
minor format 2021-08-19 10:11:02 -06:00
Hsiao-Wei Wang 59d8ee34f9
Update some "1.0" "2.0" wording 2021-08-19 23:24:04 +08:00
Danny Ryan 911a4169fe
spelling
Co-authored-by: Diederik Loerakker <proto@protolambda.com>
2021-08-19 07:59:05 -06:00
Danny Ryan 4c1156d504
rename eth1 and eth2 throughout specs and readme where reasonable 2021-08-18 17:13:24 -06:00
Hsiao-Wei Wang 93af122b2d
PR feedback from @ralexstokes and add single pubkey aggregate tests 2021-08-05 12:09:30 +08:00
Hsiao-Wei Wang 56c92136f2
Merge branch 'dev' into altair-bls-tests 2021-08-05 11:18:41 +08:00
Hsiao-Wei Wang 43a1617ffa
Ensure that the given PKs are valid PKs + fix typos 2021-08-04 21:25:37 +08:00
Hsiao-Wei Wang b262854bb1
Rename the `eth2_*` functions to `eth_` 2021-08-03 21:51:02 +08:00
Danny Ryan f7a2a973ac
Update specs/altair/p2p-interface.md
Co-authored-by: Alex Stokes <r.alex.stokes@gmail.com>
2021-07-21 15:51:59 -06:00
Danny Ryan 02a9fc460e
require aggregation bits to have at least one participant in sync contributions 2021-07-21 11:10:09 -06:00
Danny Ryan 6d0deddbe5
modify target sync committee aggregators to more sound 16 2021-07-12 09:03:43 -06:00
Danny Ryan 8140a789c4
Merge pull request #2509 from terencechain/patch-124
Rename a few instances of `signature` to `message`
2021-07-08 10:09:12 -06:00
Danny Ryan 88bb7562aa
Update specs/altair/beacon-chain.md 2021-07-07 16:11:58 -06:00
terence tsao 6f31077afa
Update `get_next_sync_committee` notes 2021-07-07 10:42:52 -07:00
terence tsao 3a59c1b789
Rename a few instances of signature to message 2021-07-07 10:04:26 -07:00
Danny Ryan c61eeb8a27
optimize sync committee message gossip and caches 2021-06-22 12:31:02 -06:00
Danny Ryan fc1012b632
typo 2021-06-21 12:49:41 -06:00
Danny Ryan a61aa7968d
clean up 2021-06-21 12:48:44 -06:00
Nishant Das 67f1c2c2bd
Update validator.md 2021-06-17 23:05:23 +08:00
protolambda 5140b59c57
add missing parenthesis 2021-06-08 21:51:26 +02:00
Diederik Loerakker 8f8b5ab648
Merge pull request #2475 from ralexstokes/discriminate-sync-comm-msg
Add `message.topic` to gossipsub `message-id` in Altair
2021-06-08 21:47:06 +02:00
Alex Stokes a343680fd4
Add implementation note on message id fn 2021-06-08 14:29:08 -05:00
Alex Stokes f60f13964c
Harden topic serialization 2021-06-08 14:15:57 -05:00
Alex Stokes 25a2e3463e
Update specs/altair/p2p-interface.md
Co-authored-by: Diederik Loerakker <proto@protolambda.com>
2021-06-08 12:06:02 -07:00
Alex Stokes d64b4e7d24
Add `message.topic` to gossipsub `message-id` in Altair 2021-06-08 13:44:06 -05:00
Alex Stokes c7980d3cd0
Clarify p2p validation conditions for Altair sync committees 2021-06-08 13:34:16 -05:00
protolambda 64f217d3e1
update sync aggregate processing reference in validator doc 2021-06-08 01:05:50 +02:00
Danny Ryan cfc66a3794
patch tests 2021-06-07 16:36:18 -06:00
Danny Ryan 09b6fb0e64
ensure consistency about sync committees vs aggregates in naming throughout 2021-06-07 16:17:46 -06:00
Danny Ryan 30f2a07637
Merge pull request #2438 from ralexstokes/add-aggregate-pks-fn
Move BLS extensions to new file in Altair
2021-06-07 07:18:31 -06:00
Danny Ryan 335d7ce1dc
Merge pull request #2446 from ethereum/SyncCommitteeSignature-to-SyncCommitteeMessage
Rename `SyncCommitteeSignature` to `SyncCommitteeMessage` to avoid name conflicts
2021-06-07 07:06:14 -06:00
Danny Ryan 1d5c4ecffb
Merge pull request #2453 from ethereum/vbuterin-patch-11
Modify sync committee logic and parameters to reduce variance
2021-06-04 12:23:16 -06:00
Hsiao-Wei Wang 45d554aee8
Merge branch 'dev' into SyncCommitteeSignature-to-SyncCommitteeMessage 2021-06-03 22:13:53 +08:00
Danny Ryan b3f2635ce7
Merge pull request #2466 from terencechain/patch-123
Altair: missing `block_root` in `SyncCommitteeSignature`
2021-06-02 16:09:13 -06:00
Danny Ryan 45a71eb267
line length lint 2021-06-02 15:58:51 -06:00
terence tsao 65f48178b7
Include block_root in SyncCommitteeSignature 2021-06-02 14:41:24 -07:00
Justin d87e076ce3
Minor Altair cosmetic polishing 2021-06-01 17:05:12 +01:00
Hsiao-Wei Wang 65f8d3d296
Merge branch 'dev' into SyncCommitteeSignature-to-SyncCommitteeMessage 2021-06-01 22:05:10 +08:00
Alex Stokes b0500c3de1
Update specs/altair/beacon-chain.md 2021-05-27 12:06:01 -07:00
Alex Stokes 4d5bc83af4
Re-org files 2021-05-27 11:59:15 -07:00
Alex Stokes 3cd842a94d
Update specs/altair/beacon-chain.md 2021-05-27 11:39:29 -07:00
vbuterin a89ecced1c
Modify sync committee logic and parameters to reduce variance
Sync committee rewards as currently implemented significantly increase variance in proposer rewards: https://github.com/ethereum/eth2.0-specs/issues/2448

For example, if there are 200000 validators (6.4m ETH staked), then during each 1/4-eek (~54 hour) period there is a chance of 512/200000 that a validator will get accepted into the sync committee, so on average that will happen once every 200000/512 * 1/4 = 97.6 eeks, or close to two years. The payout of this "lottery" is 1/8 of that, or ~12.2 eeks (a bit less than four months) of revenue. This is much more severe than block proposing (a chance of 1/200000 per slot, or a lottery worth ~0.38 eeks of revenue once every ~3.05 eeks).

This PR makes three changes to cut make the sync committee lottery less drastic and bring variance closer in line with what is available from block proposing:

* Reduce the `SYNC_REWARD_WEIGHT` from 8 to 2
* Add a penalty for not participating in the sync committee, so that despite the first change the total net reward for participating vs not participating is only cut down by 2x
* Reduce the sync committee period from 1/4 eek to 1/8 eek (~27 hours)

With these three factors combined, the lottery reduces to ~1.5 eeks of revenue, on average occurring every ~48 eeks. Validators who are maximally unlucky (ie. never become part of a sync committee) only lose ~3.12% of their rewards instead of ~12.5%.

The compromises that this approach makes are:

* In the extreme case where >50% of proposers are operating efficiently, being in a sync committee becomes a net burden. However, this should be extremely rare, and in such cases validators would likely be suffering inactivity leak penalties anyway.
* Incentive to participate in a sync committee decreased by 2x (but this is IMO an improvement; sync committees are _not_ as important as proposals and deserve to have lower rewards)
* Minimum data syncing needed to maintain a light client increases by 2x (from 24 kB per 54 hours to 24 kB per 27 hours). A burden for on-chain light clients, but still insignificant for others.
2021-05-27 09:02:51 -06:00
Paul Hauner 48f989070d
Remove naughty space 2021-05-27 15:30:44 +10:00
Paul Hauner 103d029a1a
Add clock disparity tolerance for sync subnets 2021-05-27 15:28:51 +10:00
Alex Stokes a08d23189e
Update specs/altair/validator.md
Co-authored-by: Hsiao-Wei Wang <hsiaowei.eth@gmail.com>
2021-05-26 15:51:22 -07:00
Hsiao-Wei Wang a25bc832b9
Update section headers 2021-05-26 03:01:38 +08:00
Hsiao-Wei Wang 0142978b60
Rename `SyncCommitteeSignature` to `SyncCommitteeMessage` 2021-05-26 02:36:54 +08:00
Alex Stokes 41ca149429
Explicitly define `bls.AggregatePKs` 2021-05-24 11:56:10 -07:00
protolambda e50d8d4391
Merge branch 'dev' into config-rework 2021-05-20 23:31:49 +02:00
terence tsao c03c72a543
Altair fork: add a link 2021-05-18 13:50:46 -07:00
protolambda ef8d6003d3
fix inactivity penalties markdown table 2021-05-18 10:07:35 +02:00
protolambda e4593d2d0c
update with configs<>presets separation 2021-05-18 09:55:20 +02:00
protolambda 7689ebb2bd
Altair constant/preset/config separation 2021-05-18 09:28:09 +02:00
terence tsao a7344b3ee1
Fix `PARTICIPATION_FLAG_WEIGHTS` to use correct head weight 2021-05-17 21:35:43 -07:00
Danny Ryan c87333face
minor review from dankrad on release pr 2021-05-14 10:05:54 -06:00
Diederik Loerakker 86792b9232
Merge pull request #2411 from ethereum/order-indices
ensure indices are ordered [source, target, head] everywhere
2021-05-14 14:38:26 +02:00
Danny Ryan 160b704f4a
ensure indices are ordered source, target, head everywhere 2021-05-14 06:19:29 -06:00
Danny Ryan 5dd29b6659
fix tests and minor copy edit 2021-05-14 06:15:48 -06:00
terence tsao 1310105174
Return non-duplicated sync committee subnets 2021-05-13 16:22:28 -07:00
Danny Ryan d38af7a158
Merge branch 'dev' into vbuterin-patch-11 2021-05-13 13:39:05 -06:00
Danny Ryan 699a3f837e
pr feedback 2021-05-13 13:38:43 -06:00
Danny Ryan a52565aa81
add random altair fork tests for better translation coverage + pr review 2021-05-13 13:21:43 -06:00
Danny Ryan a2c8e0e6c6
Merge branch 'dev' into translate-participation-test 2021-05-13 06:33:06 -06:00
Danny Ryan 4a91c93962
add epoch processing tests for inactivity udpates 2021-05-12 15:06:32 -06:00
Danny Ryan 24f6e1e99f
Merge branch 'dev' into vbuterin-patch-11 2021-05-12 12:42:46 -06:00
Danny Ryan a469b467ff
Merge branch 'dev' into keep-inactivity-function 2021-05-12 12:27:15 -06:00
Danny Ryan 5188671816
Update specs/altair/beacon-chain.md
Co-authored-by: dankrad <dankrad@ethereum.org>
2021-05-12 12:18:35 -06:00
Danny Ryan a0f86d19d3
Merge pull request #2407 from ethereum/ralexstokes-patch-1
Update validator guide with restricted sync committee computation
2021-05-12 12:18:06 -06:00
Alex Stokes 4286f85a68
Update validator guide with restricted sync committee computation 2021-05-12 11:05:41 -07:00
Danny Ryan a8791f04c7
'get_sync_committee -> get_next_sync_committee 2021-05-12 09:44:13 -06:00
Danny Ryan 1a7aa898ab
Merge branch 'dev' into sync-seed 2021-05-12 08:46:11 -06:00
Danny Ryan dff12dd644
Merge pull request #2400 from ethereum/sync-committee-off-by-1
add logic for handling sync committee off by one issue
2021-05-12 08:45:05 -06:00
Danny Ryan 6371707779
Apply suggestions from code review
Co-authored-by: Hsiao-Wei Wang <hsiaowei.eth@gmail.com>
2021-05-12 08:40:34 -06:00
Hsiao-Wei Wang 8e07ece492
Minor rephrase 2021-05-12 14:11:33 +08:00
Danny Ryan 8bb0531f58
only give counter-weight penalty if leak. TMP 2021-05-11 16:23:31 -06:00
Danny Ryan 09cefa03f3
remov sync signature todo 2021-05-11 16:07:24 -06:00
Danny Ryan 468f42c545
Merge branch 'simplify-sync-committee-calc' into sync-seed 2021-05-11 16:03:19 -06:00
Danny Ryan 200c049778
fix seed calc issue 2021-05-11 15:55:33 -06:00
Danny Ryan 2747882776
use current_Epoch seed when calculating next_sync_committee 2021-05-11 15:18:18 -06:00
Danny Ryan 43ba615b75
Apply suggestions from code review 2021-05-11 14:13:22 -06:00
Alex Stokes 859a7d743e
Only allow sync committee period calculation at period boundaries 2021-05-11 12:42:21 -07:00
Alex Stokes f328f77e65
clarify fork upgrade conditions 2021-05-11 10:58:45 -07:00
Danny Ryan a9cc036184
remove timely_head penalty 2021-05-11 11:48:26 -06:00
Danny Ryan e31a2af87b
remove extra if 2021-05-11 08:15:04 -06:00
Danny Ryan b1d0364105
Merge branch 'dev' into vbuterin-patch-11 2021-05-11 08:12:27 -06:00
Danny Ryan 3c609e02ea
pr feedback 2021-05-11 07:28:24 -06:00
Danny Ryan a6b8574962
test 2021-05-10 16:18:42 -06:00
Danny Ryan 85198fabfa
lint 2021-05-10 13:26:43 -06:00
Danny Ryan d8e2d19ecc
spelling 2021-05-10 13:01:31 -06:00
Danny Ryan ff706e5c7a
add logic for handling sync committee off by one issue 2021-05-10 12:57:11 -06:00
Danny Ryan 1494fe6ace
add get_inactivity_penalty_deltas back in 2021-05-10 12:21:49 -06:00
Danny Ryan cd78425570
lint 2021-05-10 10:30:47 -06:00
Danny Ryan 95e2aa6471
Merge branch 'dev' into dankrad-altair-review 2021-05-10 10:23:38 -06:00
Danny Ryan dd9fb06d25
Merge branch 'dev' into vbuterin-patch-12 2021-05-10 07:38:32 -06:00
Alex Stokes b336b710e9
Update specs/altair/beacon-chain.md
Co-authored-by: vbuterin <v@buterin.com>
2021-05-07 16:48:16 -07:00
vbuterin d1bedbfbec
Update inactivity penalty deltas processing
Two main changes:

1. Inactivity scores are modified to decrease slowly for inactive validators when we are not in a leak, and quickly for active validators
2. The inactivity penalties are applied even not during a leak (note that inactivity _scores_ decrease when outside of a leak)

This has the effect that the inactivity leak "overshoots" the target of finalizing again, and keeps leaking balances a bit more. For inactive validators, this PR sets post-leak recovery to happen 3x faster than the during-leak increase, so if a validator loses 3% during a leak, if they stay offline they should expect to lose another 1% until their score decreases back to zero.
2021-05-07 11:05:27 -07:00
Alex Stokes 04a9595415
Add notes about sync committee stability 2021-05-07 10:06:44 -07:00
Alex Stokes 86104ea361
Use stable sync committee indices when processing block rewards 2021-05-07 09:55:21 -07:00
dankrad 2fc68c451e
Update specs/altair/beacon-chain.md
Co-authored-by: Alex Stokes <r.alex.stokes@gmail.com>
2021-05-06 22:55:55 +01:00
Dankrad Feist ba2c717bf1 Remove PARTICIPATION_FLAGS 2021-05-06 22:55:17 +01:00
Danny Ryan 637cf0743c
Merge pull request #2376 from ralexstokes/adjust-sync-committee-subnet-count
Adjust subnet count to reflect smaller sync committees
2021-05-06 12:51:24 -06:00
Danny Ryan b979ea144a
Merge pull request #2378 from ralexstokes/update-altair-sync-protocol
Updates to Altair light client sync protocol
2021-05-06 12:50:52 -06:00
Danny Ryan 13409dc1bc
Merge branch 'dev' into adjust-sync-comm-params 2021-05-06 12:43:11 -06:00
Danny Ryan 609172d790
Merge pull request #2370 from ralexstokes/simplify-sync-committee-aggregates
Simplify sync committee aggregates
2021-05-06 12:38:49 -06:00
Alex Stokes 4c73fec88e
convert `LightClientStore` to python object instead of SSZ object
this avoids the type overhead of having to define a max size for
the object's data and skips the overhead of serialization/consensus
for a type that does not need it
2021-05-06 10:52:48 -07:00
Dankrad Feist 81a8c2748f Integrate get_inactivity_penalty_deltas into reward computation for better readability 2021-05-06 13:03:26 +01:00
Dankrad Feist cf724daa7a No inactivity penalty for untimely head 2021-05-06 12:42:05 +01:00
Dankrad Feist cbf9f85537 Remove duplicate inactivity leak 2021-05-06 12:28:18 +01:00
Michael Sproul ea6c042918
Altair: carry-over prev epoch participation 2021-05-06 10:55:10 +10:00
Dankrad Feist b041a9b0d6 Further flag_index revert 2021-05-05 22:22:32 +01:00
Dankrad Feist 77524036f5 Revert "Flags to BitVector"
This reverts commit 786e611c71.

# Conflicts:
#	specs/altair/beacon-chain.md
2021-05-05 22:02:37 +01:00
Dankrad Feist 55471bc5d4 Revert "BitVector -> Bitvector"
This reverts commit df6bd1b6c3.
2021-05-05 21:58:03 +01:00
Dankrad Feist 687641a79b Remove extra variable 2021-05-05 21:55:36 +01:00
Dankrad Feist 227d1007e6 Update toc 2021-05-05 20:09:14 +01:00
Dankrad Feist a382cf6d5c Refactor participation flag list 2021-05-05 20:04:06 +01:00
Dankrad Feist 238a9b03fc Correct confusing comments in "get_sync_committee_indices" 2021-05-05 18:09:36 +01:00
Alex Stokes a2cf833437
Update specs/altair/beacon-chain.md
Co-authored-by: Hsiao-Wei Wang <hsiaowei.eth@gmail.com>
2021-05-05 09:32:28 -07:00
Hsiao-Wei Wang ded6d5bad4
Merge pull request #2377 from ralexstokes/altair-whitespace
clean up whitespace on altair files
2021-05-05 20:44:15 +08:00
Hsiao-Wei Wang 6a9b3671f0
Fix the type of `EPOCHS_PER_SYNC_COMMITTEE_PERIOD` and update the config files 2021-05-05 19:53:37 +08:00
Hsiao-Wei Wang d383a14213
Fix ToC 2021-05-05 19:47:26 +08:00
Dankrad Feist df6bd1b6c3 BitVector -> Bitvector 2021-05-05 12:26:37 +01:00
Dankrad Feist 786e611c71 Flags to BitVector 2021-05-05 12:05:32 +01:00
vbuterin b310482bce
Update specs/altair/beacon-chain.md 2021-05-04 17:19:51 -07:00
vbuterin 9dcdbafba3
Reorganization of config params to put sync committee in one section
This may be marginally "cleaner" than the previous approach, keeping constants with the same topic together.
2021-05-04 17:19:15 -07:00
vbuterin a562f2aeb4
"toward" -> "closer to" for penalty adjustments
Makes it clearer that even the Altair values are not final
2021-05-04 17:05:15 -07:00
Alex Stokes 3b80324119
Compute `LIGHT_CLIENT_UPDATE_TIMEOUT` in lieu of maintaining a constant 2021-05-04 13:47:46 -07:00
Alex Stokes 7a168be862
allow fault tolerance equal to threshold, not just above 2021-05-04 13:25:34 -07:00
Alex Stokes eae64fd18c
clean up whitespace on altair files 2021-05-04 12:43:21 -07:00
Alex Stokes 7d236561bd
adjust subnet count to reflect smaller sync committees 2021-05-04 12:41:19 -07:00
Alex Stokes 9c3d5982cf
add documentation about duplicate pubkeys 2021-05-04 12:20:48 -07:00
Alex Stokes 7b33c1119a
simplify sync committee pubkey aggregation in altair 2021-05-04 12:19:33 -07:00
Alex Stokes 0438f2f27c
whitespace 2021-05-04 12:19:33 -07:00
Hsiao-Wei Wang 9980d2098d
Fix lint 2021-05-04 22:21:58 +08:00
Danny Ryan 80df9e6b0b
Merge branch 'dev' into altair-pass 2021-05-04 07:41:25 -06:00
Danny Ryan 053179cee9
comments and tests on altair 2021-05-04 07:39:22 -06:00
terence tsao 930ca61690
Fix lint (124 > 120 characters) 2021-05-02 20:47:57 -07:00
terence tsao 780121f9b0
Add backticks to the arguments in functional comments 2021-05-02 20:31:52 -07:00
Alex Stokes 68d6e4319a
Adjust sync committee size and duration 2021-05-01 16:30:23 -07:00
Danny Ryan c3dfc2e085
Merge pull request #2362 from ethereum/sync-cleanup
Minor altair cleanups
2021-04-28 08:42:23 -06:00
Danny Ryan e89fae86a6
Apply suggestions from code review
Co-authored-by: Hsiao-Wei Wang <hsiaowei.eth@gmail.com>
2021-04-28 06:52:16 -06:00
Danny Ryan 9f74f1f9e5
minor sync committee cleanups 2021-04-27 15:06:45 -06:00
Danny Ryan 2628721f96
Merge pull request #2323 from ethereum/prepare_state
Simplify Altair "genesis"
2021-04-27 12:32:13 -06:00
Danny Ryan c090d6aa21
Merge pull request #2352 from ralexstokes/add-altair-metadata-updates
Add `syncnets` data to Altair `MetaData`
2021-04-27 12:20:03 -06:00
Danny Ryan ae429a38a0
add Modified comment 2021-04-27 12:11:15 -06:00
Alex Stokes 9bb3444c89
Add `syncnets` data to Altair `MetaData`. 2021-04-27 09:34:24 -07:00
ericsson 93378afcd0 Fix typing problem: `upgrade_to_altair` should use `phase0.get_current_epoch` 2021-04-23 18:21:29 +03:00
Alex Stokes ebd16e1b79
add helper in p2p document to executable spec 2021-04-22 11:05:06 -07:00