libera #monero-dev

31 Mar 2024

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

• 08:42
  rbrunner
  I am trying to do initial blockchain sync, with self-compiled latest master, on OpenBSD 7.4
• 08:43
  rbrunner
  There is a problem that syncing gets slower and slower, until over the course of about 1 hour you can hardly move the X cursor anymore, and echo of single characters on the monerod console takes a minute or so
• 08:45
  rbrunner
  It looks to me like the first suspicion of a memory leak is not the answer because "top" shows an almost constant memory use of about half a gig for monerod
• 08:46
  rbrunner
  If I still manage to exit monerod (still possible after about 1 hour, after 2 hours the systems seems to be frozen completely) everything returns to normal
• 08:47
  rbrunner
  and then after a restart syncing resumes and is fast again
• 08:47
  rbrunner
  for about 1 hour. Rinse and repeat.
• 08:47
  rbrunner
  Any idea?
• 10:47
  m-relay
  <s​yntheticbird:monero.social> 01GXQ7PK2DK0KQX35H8D6MZ5ES.gif
• 10:47
  m-relay
  <s​yntheticbird:monero.social> cry about it
• 10:49
  m-relay
  <s​yntheticbird:monero.social> This would require flamegraph I think
• 11:08
  selsta
  rbrunner: reddit.com/r/openbsd/comments/txdt4o/comment/i3orkh0 related?
• 11:08
  selsta
  monero-project/monero #7027
• 11:49
  SyntheticBird
  Related to BP+ optimization discussion brought by ArticMine. Is the actual implementation making use of SIMD ? If yes up to which one, SSE2 ? SSE4x ? AVX2 ?
• 11:49
  rbrunner
  selsta: Thanks. Not sure, but it gave me ideas what to try next.
• 11:50
  SyntheticBird
  Checking crypto/crypto-ops.c, I would like to believe the compiler vectorize the work. But I'm not entirely sure
• 11:53
  moneromooo
  src/ringct/bullet*. Building blocks are crypto-ops.c, but I would touch src/ringct first.
• 11:53
  moneromooo
  The multiexp is a large part of the processing. Multiprocessing would be a better performance/work ratio to go for first.
• 11:55
  moneromooo
  There's a version of the stuff from crypto-ops for the wallet which uses asm (can't recall whether SIMD, but likely), it did not replace those ops for the node due to fork concerns.
• 11:55
  selsta
  github.com/monero-project/supercop/tree/monero
• 11:57
  SyntheticBird
  alr. thx for the link