Commit Graph

307 Commits

Author SHA1 Message Date
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
Alex Stokes 3c07303c5c
Update specs/altair/p2p-interface.md
Co-authored-by: Danny Ryan <dannyjryan@gmail.com>
2021-04-22 10:34:16 -07:00
Alex Stokes 99b2cc2f3e
Clarify usage of field in data 2021-04-22 10:34:16 -07:00
Alex Stokes f992a9ae65
Remove duplicate validation 2021-04-22 10:34:16 -07:00
Alex Stokes 360a1dd598
Respect subcommittees in gossip validations for Altair 2021-04-22 10:34:15 -07:00
Diederik Loerakker 9d0bfec2d6
Merge pull request #2345 from ralexstokes/use-markdown-parser-for-literate-pyspec
Use markdown parser for literate pyspec
2021-04-22 18:05:06 +02:00
Alex Stokes a9e3ecabbd
demo spec comment feature 2021-04-21 18:49:51 -07:00
Alex Stokes b870f92801
Update validator.md 2021-04-21 17:08:38 -07:00
Hsiao-Wei Wang 93f6a541ad
PR feedback from @djrtwo 2021-04-21 16:42:54 +08:00
Hsiao-Wei Wang 2063c96c80
Merge branch 'dev' into prepare_state 2021-04-21 16:34:29 +08:00
Hsiao-Wei Wang 66e1a2858f
Use `ALTAIR_FORK_EPOCH` instead of `ALTAIR_FORK_SLOT` 2021-04-21 00:24:44 +08:00
Hsiao-Wei Wang baf4b73c18
Fix ToC 2021-04-20 23:38:48 +08:00
Hsiao-Wei Wang 666f847354
Update specs and test format note. 2021-04-20 23:37:53 +08:00
Hsiao-Wei Wang 57ac8c3f28
Fix doc 2021-04-16 11:34:50 +08:00
Hsiao-Wei Wang b65566f184
Fix ToC 2021-04-15 15:41:12 +08:00
Hsiao-Wei Wang 8708ec4bb0
Update doc 2021-04-12 22:02:04 +08:00
Hsiao-Wei Wang a8160f1634
Try to initialize state with pure Altair spec in tests 2021-04-10 00:53:37 +08:00
Adrian Sutton 08f9f81c1f
Update note about changes to slash_validator. 2021-04-07 11:44:24 +10:00
Danny Ryan 05581e759c
Merge pull request #2309 from terencechain/fix-spelling
Fix spelling
2021-04-05 18:48:40 -06:00
terence tsao b2f42bf4d7 broadast -> broadcast 2021-04-05 17:05:59 -07:00
Alex Stokes 746d6453bc
Clean up unnecessary function arguments
Some of the inputs to some functions in the Altair validator guide
were required in earlier iterations of the aggregation scheme but are
no longer required in the current version. This commit cleans up these
functions.
2021-04-05 16:56:13 -07:00
Danny Ryan 52e4ce3bcf
Merge pull request #2276 from barnabemonnot/altair_incentives
Modify incentives to preserve invariant
2021-04-05 12:23:17 -06:00
Alex Stokes bf7c61ff30
Merge pull request #2299 from ralexstokes/update-altair-p2p
Fix language with sync committee selection proofs
2021-04-05 11:03:36 -07:00
Hsiao-Wei Wang 8d60614728
Merge branch 'dev' into altair_incentives 2021-04-06 00:01:11 +08:00
Meredith Baxter 4a1126d916 Fix table formatting 2021-04-05 11:34:06 -04:00