libera #monero-dev

4 Dec 2023

Official repo: github.com/monero-project/monero || Don’t ask to ask, just ask:) || Monero GUI dev is at #monero-gui || Monero website dev is at #monero-site || Non-dev questions -> #monero, please || No fork help, you’re on your own

• 01:11
  m-relay
  <d​ark_sky:monero.social> Is anyone aware of any rust project using RandomX, bindings , etc... ?
• 01:40
  m-relay
  <b​oog900:monero.social> github.com/tari-project/randomx-rs
• 09:52
  parazyd
  Hey I'm doing some experiments with a regtest and solomining with my own proxy
• 09:52
  parazyd
  Monerod gives me a difficulty of "2568" and when I proxy the getblocktemplate to xmrig, I also see diff "2568" in xmrig
• 09:53
  parazyd
  However upon submitting a block, monerod logs: does not have enough proof of work: <hash> at height 2000001, unexpected difficulty: 2568
• 09:53
  parazyd
  And the block verification fails
• 09:53
  parazyd
  Anyone got an idea why this is happening?
• 10:06
  parazyd
  Perhaps relevant, I'm removing `extra_nonce` from xmrig's getblocktemplate request and replacing it with `reserve_size`
• 10:20
  sech1
  if you modify xmrig's request, maybe you get a response that xmrig doesn't expect, and it computes wrong hashes.
• 10:28
  parazyd
  sech1: I am not modifying the difficulty though, and monerod says that it fails block verification with "unexpected difficulty". Could that error be misleading?
• 10:29
  parazyd
  It's xmrig in daemon mode. What's the assumption in xmrig with its `extra_nonce` that it's sending as part of the getblocktemplate request?
• 10:30
  parazyd
  I doubt it should be trying to include that in the mined block in any way, since it's not building a block on its own, rather should be mining the one that it gets as a getblocktemplate response
• 10:32
  parazyd
  My proxy is modifying blocktemplate_blob and then also updating the blockhashing_blob
• 10:33
  sech1
  Maybe you calculate blockhashing_blob wrong
• 10:33
  sech1
  xmrig expects extra_nonce to be 8 bytes
• 10:34
  parazyd
  I'm using this: docs.rs/monero/latest/monero/blockd…lock.html#method.serialize_hashable
• 10:34
  sech1
  Try to check if you get the same hashing blob if you don't modify the template
• 10:35
  parazyd
  Okay
• 10:40
  parazyd
  hm interesting, the Rust code prepends a byte
• 10:40
  parazyd
  Possibly VarInt
• 10:43
  parazyd
  monero-rs/monero-rs #188
• 10:43
  parazyd
  :)
• 10:55
  sech1
  monero-rs has a lot of bugs, especially in the rarely used parts of the code
• 10:56
  parazyd
  Well it's free software, so we can fix it :)
• 11:02
  parazyd
  sech1: Thanks for the pointer, it works with this change: monero-rs/monero-rs #194/files
• 11:02
  parazyd
  (Removing the prepended VarInt)