2020-02-06-Eth2-impl-call-33

2020-02-06-Eth2-impl-call-33.txt

Nimbus

- Team in Brussels
  - Running nimbus on 5 phones
    impressive reception by the community:
    https://twitter.com/m_ratsim/status/1224769743892230151

- Now using monthly sprint
  - Milestones public: https://github.com/status-im/nim-beacon-chain/milestones
  
- Testing:
  - fixing tests that were not enabled after 10.x changes (and preventing forgetting to reenable tests on spec changes)
  - ironing out 10.1 bugs
  - fixing fuzzing bug
  
- Core
  - Update our SSZ parser to better handle malformatted SSZ
  - sync refactoring 90% (has been worked on for >1 month)

- Hiring:
  - recruited a new Nimbuses dev
  - junior dev
  - tech writer
  
——————
https://github.com/ethereum/eth2.0-pm/issues/126

——————
Testing update

ongoing update from LeastAuthority


Fork choice test
Value in testing the reference API?
(…)

Danny: Proto travelling but working on testing tool https://github.com/protolambda/eth2-lurk
for pubsub message

——————
Client updates

Teku / Artemis

Sync ongoing
working on Prysm compute
(?)
10.1 BLS ready
stability
issue on Prysm testnet: BeaconBlockByRanges issue (counting skipped slots issue)


Nimbus

Trinity
Working on 10.1
Eth1 integration progress
progress on Disc v5
Trio (?)

Lodestar

Still working on SSZ implementation
Loose ends in typescript’s types, pushed upstream
Passing 0.9.4 spec tests
Some work to do on fork choice (but no tests)
Upgrading libp2p to the new async version

Prysm
Testnet updates
improving CPU usage and block time (?)

Lighthouse
Hiring final stages 20+ applicants
more stability
network stack update
- noise
- …
Ready to merge 10.1
Preparing for 10k testnet
issue of large RAM usage on high validator count
Memory fragmentation in tree-hashing due to absence of compacting garbage collector
-> build abstraction, reduce RAM usage by half
-> + moved memory to the stack, and saved 70% usage

Nethermind
- excused

——————
Research updates

Vitalik: research on 51% attack detection and recovery

Will / Quilt:
Writing a book
- Eth 1 overview
- Eth 2 overview
- Proof-of-stake, long-range attack, weak subjectivity
- (?)
- beacon chain
initial release target: 2~3 months

- Static state access model review (taking a skeptical view and then checking the benefits)
  - can run (?) T-analysis on Eth1 contract to highlight which 1 are using dynamic state access
  - contract analysed by hand, Uniswap
  
TXRX:
(? protocol compatible with beacon chain)
- hardening protocol
- relaxed adversarial model
- collaboration on EEs with Quilt

Paper on 1-way bridge (planned next week), followup on 2 way bridge

Leo:
Write-up on client implementation from Proto
First draft target for EthBarcelona in May
Discord #education
https://hackmd.io/Zc8wlp_LRfChQ6TyLC1kxA

————————-
Events

Eth222 conf on Feb 22 https://www.eventbrite.com/myevent?eid=90667602239

Consensus 2020, spot open for Eth2: https://hackmd.io/@353yQn6WTImF5o12LQXXfQ/SkzfeCuMU

——————
Network updates

Call 1 week ago:
- (link to minutes)

Q: on snappy frame vs block compression
Q: on compression ratio

libp2p specified the noise protocol
Need XX handshake for our use-case

————————
Closing

EthDenver next week