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Ethereum Core Devs Meeting 41 Notes

Meeting Date/Time: Fri, June 29, 2018 14:00 UTC

Meeting Duration: 1.5 hours

GitHub Agenda Page

Audio/Video of the meeting

Agenda

  • Testing
  • Research Updates
  • Client Updates
  • Constantinople hard fork timing and what to include (continuing conversation from last call). a. EIP 145: Bitwise shifting instructions in EVM: pretty well-formed, but not 100% implemented or tested. b. EIP 210: Blockhash refactoring. c. EIP859: account abstraction. d. EIP 1052: EXTCODEHASH Opcode. e. EIP 1087: Net gas metering for SSTORE operations. f. EIP 1014: Skinny CREATE2.

Notes

Video starts at [4:47].

Testing

  • Dimitry is still working on RPC methods, still wants help with this
  • Gave an update at ECDC
  • Pushing for more clients to look at an issue on Github that outlines further required RPC methods, more clients to further standardize the testing

Research updates

Client updates

  • geth (Peter)
    • Been playing around with state pruning for the last few weeks
    • Still buggy and slow, hoping the next major geth release will have full state pruning
  • Harmony (Dmitrii)
    • Regular work, hot fix
  • ewasm (Casey)
    • Preparing to give talk tomorrow, will give the update there
  • Mikhail (Harmony)
    • Prepared and published a roadmap for sharding research
    • Will share link later
  • Nimbus (Jacek)
    • Published rough roadmap/timeline for sharding implementation, status.im/nimbus
    • Will publish to a slightly more public place soon-ish

Gas cost reduction

  • Vitalik published a proto-EIP for gas cost reduction
    • Only thing we need is more rigorous thinking and discussion about what to reduce gas costs to
    • Would like to see input from at least both geth and parity
    • Reducing costs depends on both of these clients having faster implementations that can handle that

EIPs

  • Nick Johnson on EIP-1087 Net Gas Metering
    • No changes since last meeting
    • Want to chat about whether remainder gas cost is reasonable
    • Currently subsequent storage writes cost same as storage read but could arguably be even cheaper than that
    • Let's continue conversation on EIP and FEM forum thread
  • V: I don't think we need account abstraction for Constantinople but skinny CREATE will go forward

Changing network IDs

  • Alexey Akhunov's proposal
  • Let's bring up next call when more people are on the call

Attendees

  • Hudson Jameson (EF)
  • Nick Johnson (EF/ENS)
  • Lane Rettig (ewasm)
  • Vitalik Buterin (EF/research)
  • Justin Drake (EF/research)
  • Daniel Ellison (Consensys/LLL)
  • Danny Ryan (EF/research)
  • Casey Detrio (ewasm)
  • Mikhail Kalanin (Harmony/EthereumJ)
  • Dmitrii (EthereumJ)
  • Péter Szilágyi (EF: geth)
  • Martin Holst Swende (EF: geth/security)