2020-03-12 Eth Impl Call #35

2020-03-12 Eth Impl Call 35.txt

https://github.com/ethereum/eth2.0-pm/issues/132

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Nimbus

PM:
  - Created targets for March sprint
    - Interop
    - Starting auditing
    - Dropping completely libp2p daemon

Core:
  - Almost at v0.10.1 with the new BLS changes
    98% work done
    delayed due low-level bugs
  - Progress on attestation aggregation work
    not fully done but mergeable

Testing:
  - CI automatically launch a local network and ensure finalization
    
Networking:
- Discovery: can interop with Geth discv5
  cannot interop with Lighthouse yet
- Several improvement to libp2p stability
- Log analysis tool to track libp2p errors
    
Performance:
- Fix a critical performance bug in libp2p
  that lead to buffer of size 1 instead of 1MB
- Impact: we can handle 5x more traffic
  and now we generate 5x more logs
  
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Updates

v0.11: DOS hardening on the network
pyspecs, cleaning up
changes in state_transition
proposer_index added to block to ease using block without the state

No more changes in state transition expected
More changes expected for networking/multiclient testate

Next tests: fork choices

Proto: ZCLI/ZRNT update to 0.10
Rumor for gossip sub

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Client updates

Sigp:
Research on () system
ENR in its own crate
Discv5
Chat with sigp, and felix to improve Discv5 speed
ENR (?) query
Staker survey
Remerkleable
[… missed]
2 new developers

Prysm:
Interop with lighthouse on EthDenver branch
0.1 version of slashing service live
—> report double votes
New SSZ, significantly faster
Uses a code generator that output a marshal function
Issue was Go absence of support of generics
WIP:
  Dynamic Substitutions of Subnets
  (?)
  v0.11

Nimbus

Teku:
Discv5 merged in
Can discover Lighthouse but cannot discover own nodes
Good progress on RPC
- interest in Pegasys to standardize across clients
- strong interest with Infura
Perf: remerkleable:
4x speedup on Block processing
4x slowdown in Epoch processing
Next perf target: sync / database slowdown

Fast verification of aggregate signature: https://ethresear.ch/t/fast-verification-of-multiple-bls-signatures/5407

Trinity
Focus on stability
Discv5: interop with Geth and Lighthouse
Updates to latest spec release

Lodestar
Audit will result will be made public soon
Targets:
- trying to sync with other testnet
- Stability of code

Nethermind Tomasz (sound issue)
- 10.1 spec!

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Research

Audit results. Will be released ASAP

Phase 1: major PR to be merged soon

TXRX - Joseph
Writeup on safety of Eth1 follow distance
Cross-shard transaction

Vitalik
Polynomial commitments for state roots (longer term proposal)
as a replacement to binary merkle tree
Allows very short witnesses for large (?)
Drop the bottleneck for stateless clients by 90%
Requires digest using polynomial commitment: https://ethresear.ch/t/using-polynomial-commitments-to-replace-state-roots/7095
Relies on Math invented 2 weeks ago
For starter:
  - block bodies
  - or receipts

Ansgar:
- Eth1.X, looking into Eth2 research that can be reused for Eth1.x

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Networking

See notes from last week call from Ben

Proto: EthCC working with Dmitry (Status) and Felix

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Summary

March: 0.11, multi client experimentation
April: Multiclient testnets

in-situ interop event, not anytime soon

V: Phase 1 implementation?
—> party interested but not started.