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 25 2018-01-25T01:45:48  <bitcoin-git> [bitcoin] MarcoFalke pushed 7 new commits to master: https://github.com/bitcoin/bitcoin/compare/f359afcc4104...6970b30c6f1d
 26 2018-01-25T01:45:49  <bitcoin-git> bitcoin/master ca6523d Anthony Towns: [tests] Rename feature_* functional tests.
 27 2018-01-25T01:45:49  <bitcoin-git> bitcoin/master 90600bc Anthony Towns: [tests] Rename wallet_* functional tests.
 28 2018-01-25T01:45:50  <bitcoin-git> bitcoin/master 61b8f7f Anthony Towns: [tests] Rename p2p_* functional tests.
 29 2018-01-25T01:46:19  <bitcoin-git> [bitcoin] MarcoFalke closed pull request #11774: [tests] Rename functional tests (master...rename_tests) https://github.com/bitcoin/bitcoin/pull/11774
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 42 2018-01-25T02:04:54  <bitcoin-git> [bitcoin] kallewoof opened pull request #12265: [test] fundrawtransaction: lock watch-only shared address (master...test-fundrawtransaction-lockunspent) https://github.com/bitcoin/bitcoin/pull/12265
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 53 2018-01-25T02:21:38  <bitcoin-git> [bitcoin] TheBlueMatt opened pull request #12266: Move scheduler/threadGroup into common-init instead of per-app (master...2018-01-common-init) https://github.com/bitcoin/bitcoin/pull/12266
 54 2018-01-25T02:21:39  <BlueMatt> cfields: #12266
 55 2018-01-25T02:21:41  <gribble> https://github.com/bitcoin/bitcoin/issues/12266 | Move scheduler/threadGroup into common-init instead of per-app by TheBlueMatt · Pull Request #12266 · bitcoin/bitcoin · GitHub
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153 2018-01-25T05:59:10  <bitcoin-git> [bitcoin] statebits opened pull request #12267: Update blockchain size in Ravencoin/doc/Readme (master...master) https://github.com/bitcoin/bitcoin/pull/12267
154 2018-01-25T05:59:37  <bitcoin-git> [bitcoin] statebits closed pull request #12267: Update blockchain size in Ravencoin/doc/Readme (master...master) https://github.com/bitcoin/bitcoin/pull/12267
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171 2018-01-25T06:32:34  <ProfMac> Does it make sense to do the git clone into /opt, /var/opt, or ~{$USER}/opt
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175 2018-01-25T06:38:33  <jonasschnelli> ProfMac: i guess that depends...
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177 2018-01-25T06:38:55  <jonasschnelli> clone it to wherever you have enough space to compile... :)
178 2018-01-25T06:39:17  <jonasschnelli> I would recommend within you userspace
179 2018-01-25T06:39:45  <jonasschnelli> If you want to make the binaries accessable to everyone, use "make install" (probably sudo)
180 2018-01-25T06:41:32  <ProfMac> jonasschelli, thanks.  Userspace then make install makes good sense.
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251 2018-01-25T09:57:17  <promag> iiuc #12265 fixes a bug in the test, should be 0.16?
252 2018-01-25T09:57:19  <gribble> https://github.com/bitcoin/bitcoin/issues/12265 | [test] fundrawtransaction: lock watch-only shared address by kallewoof · Pull Request #12265 · bitcoin/bitcoin · GitHub
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256 2018-01-25T10:06:59  <promag> jnewbery: flake8 --ignore=B,C,E,F,I,N,W --select=F401 test/functional/p2p-versionbits-warning.py in master I get not warnings
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258 2018-01-25T10:07:12  <promag> s/not/no
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297 2018-01-25T12:41:27  <jnewbery> promag: that's because --ignore is suppressing all the warnings
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299 2018-01-25T12:44:49  <jnewbery> our Travis linter only checks for F401 (module imported but unused), but in general it's preferable to follow PEP8, all other things being equal: https://github.com/bitcoin/bitcoin/blob/6970b30c6f1d2be7947295fe18f2390649b17a4b/test/functional/README.md#style-guidelines
300 2018-01-25T12:46:38  <promag> ok got it
301 2018-01-25T12:46:55  <promag> so how do you usually run?
302 2018-01-25T12:47:16  <promag> flake8 file?
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306 2018-01-25T12:56:57  <jnewbery> I use Syntastic in vim so it runs flake8 every time I save a python file. My ~/.config/flake8 file has:
307 2018-01-25T12:57:25  <jnewbery> ignore = E302,E305,E501,E731
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312 2018-01-25T13:07:27  <bitcoin-git> [bitcoin] MarcoFalke pushed 4 new commits to master: https://github.com/bitcoin/bitcoin/compare/6970b30c6f1d...598a9c4e4dcd
313 2018-01-25T13:07:28  <bitcoin-git> bitcoin/master ef2beb2 John Newbery: Fix flake8 warnings in p2p-versionbits-warning.py
314 2018-01-25T13:07:28  <bitcoin-git> bitcoin/master 3bbd843 John Newbery: Improve comments/logging in p2p-versionbits-warning.py
315 2018-01-25T13:07:29  <bitcoin-git> bitcoin/master 1e2e09e John Newbery: Fix intermittent failure in p2p-versionbits-warning.py...
316 2018-01-25T13:08:31  <bitcoin-git> [bitcoin] MarcoFalke closed pull request #12264: Fix versionbits warning test (master...fix_versionbits_warning_test) https://github.com/bitcoin/bitcoin/pull/12264
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324 2018-01-25T13:28:21  <promag> thanks jnewbery
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326 2018-01-25T13:31:21  * wumpus should probably start doing that too
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336 2018-01-25T14:24:40  * jnewbery gets annoyed by it sometimes and has to run :SyntasticToggleMode to stop his screen being filled with red
337 2018-01-25T14:27:52  <mrannanay> @jnewbery I can relate so much xD
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359 2018-01-25T15:39:27  <bitcoin-git> [bitcoin] gmaxwell opened pull request #12269: Update defaultAssumeValid to block 506067 (master...201801-update-assumevalid) https://github.com/bitcoin/bitcoin/pull/12269
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414 2018-01-25T18:05:49  <bitcoin-git> [bitcoin] laanwj pushed 3 new commits to master: https://github.com/bitcoin/bitcoin/compare/598a9c4e4dcd...16bac24f60fa
415 2018-01-25T18:05:50  <bitcoin-git> bitcoin/master 55f52bd Wladimir J. van der Laan: contrib: Update ATTERN_AGENT to include 0.15.x
416 2018-01-25T18:05:50  <bitcoin-git> bitcoin/master 1e90544 Wladimir J. van der Laan: net: Update hardcoded seeds...
417 2018-01-25T18:05:51  <bitcoin-git> bitcoin/master 16bac24 Wladimir J. van der Laan: Merge #12262: net: Hardcoded seed update...
418 2018-01-25T18:06:20  <bitcoin-git> [bitcoin] laanwj pushed 2 new commits to master: https://github.com/bitcoin/bitcoin/compare/16bac24f60fa...2ae7cf8ef5be
419 2018-01-25T18:06:20  <bitcoin-git> bitcoin/master bde8bcd Gregory Maxwell: Update defaultAssumeValid according to release-process.md....
420 2018-01-25T18:06:21  <bitcoin-git> bitcoin/master 2ae7cf8 Wladimir J. van der Laan: Merge #12269: Update defaultAssumeValid to block 506067...
421 2018-01-25T18:06:35  <bitcoin-git> [bitcoin] laanwj closed pull request #12269: Update defaultAssumeValid to block 506067 (master...201801-update-assumevalid) https://github.com/bitcoin/bitcoin/pull/12269
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424 2018-01-25T18:21:12  <bitcoin-git> [bitcoin] laanwj opened pull request #12270: Update chainTxData for 0.16 (master...2018_01_chainstats) https://github.com/bitcoin/bitcoin/pull/12270
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435 2018-01-25T18:41:40  <bitcoin-git> [bitcoin] Ov3rlo4d closed pull request #12029: Build: Add a makefile target for Doxygen documentation (master...make-doxygen) https://github.com/bitcoin/bitcoin/pull/12029
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437 2018-01-25T18:44:23  <bitcoin-git> [bitcoin] Ov3rlo4d reopened pull request #12029: Build: Add a makefile target for Doxygen documentation (master...make-doxygen) https://github.com/bitcoin/bitcoin/pull/12029
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453 2018-01-25T19:00:17  <achow101> meeting?
454 2018-01-25T19:00:23  <wumpus> #startmeeting
455 2018-01-25T19:00:23  <lightningbot> Meeting started Thu Jan 25 19:00:23 2018 UTC.  The chair is wumpus. Information about MeetBot at http://wiki.debian.org/MeetBot.
456 2018-01-25T19:00:23  <lightningbot> Useful Commands: #action #agreed #help #info #idea #link #topic.
457 2018-01-25T19:00:42  <provoostenator> Hi
458 2018-01-25T19:00:51  <wumpus> #bitcoin-core-dev Meeting: wumpus sipa gmaxwell jonasschnelli morcos luke-jr btcdrak sdaftuar jtimon cfields petertodd kanzure bluematt instagibbs phantomcircuit codeshark michagogo marcofalke paveljanik NicolasDorier jl2012 achow101 meshcollider jnewbery maaku fanquake promag provoostenator
459 2018-01-25T19:00:55  <jonasschnelli> hi
460 2018-01-25T19:00:55  <achow101> can we release 0.16 yet?
461 2018-01-25T19:01:11  <meshcollider> Hi
462 2018-01-25T19:01:23  <wumpus> today or tomorrow, hopefully
463 2018-01-25T19:01:25  <instagibbs> perhaps an RC first
464 2018-01-25T19:01:28  <wumpus> there's still two PRs open
465 2018-01-25T19:01:32  <wumpus> instagibbs: always
466 2018-01-25T19:01:36  <cfields> hi
467 2018-01-25T19:01:40  <kanzure> hi.
468 2018-01-25T19:01:44  <instagibbs> wumpus, thatsthejoke.gif
469 2018-01-25T19:01:52  <wumpus> https://github.com/bitcoin/bitcoin/milestone/30
470 2018-01-25T19:02:25  <instagibbs> not sure how to evaluated the chain stats one
471 2018-01-25T19:02:26  <jtimon> before releasing we would need to fork from master, no?
472 2018-01-25T19:02:40  <instagibbs> jtimon, can happen immediately after, afaik
473 2018-01-25T19:02:46  <wumpus> so the chaintxdata needs to be checked and BlueMatt's pr reviewed
474 2018-01-25T19:02:48  <instagibbs> well, version bump ofc
475 2018-01-25T19:02:54  <wumpus> jtimon: yes, no way I'm going to forget that
476 2018-01-25T19:02:57  <jtimon> instagibbs: without rc?
477 2018-01-25T19:02:58  <Chris_Stewart_5> hello
478 2018-01-25T19:03:02  <achow101> jtimon: branching happens right before rc is tagged
479 2018-01-25T19:03:11  <jtimon> achow101: right
480 2018-01-25T19:03:14  *** Randolf has quit IRC
481 2018-01-25T19:03:21  <wumpus> branch -> [on 0.16 branch] change version information -> tag rc
482 2018-01-25T19:03:29  <cfields> oh shit, I never PR'd the rpc fd exhaustion fix. wumpus: ok to do that right after meeting and add to 0.16 milestone?
483 2018-01-25T19:03:38  <wumpus> -> [on master] change version information -> clear out release notes
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485 2018-01-25T19:04:10  <wumpus> 0.16 branch will be 0.16.0 (with release=true) master will be 0.16.99
486 2018-01-25T19:04:13  <wumpus> cfields: sure
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488 2018-01-25T19:04:23  <cfields> thanks
489 2018-01-25T19:04:46  *** mxg has quit IRC
490 2018-01-25T19:05:11  <wumpus> though maybe it can wait for 0.16.1 too, I don't know, it's only a local issue
491 2018-01-25T19:06:14  <MarcoFalke> It's a major release. There is no way we will have only one rc
492 2018-01-25T19:06:23  <MarcoFalke> Backport works as well
493 2018-01-25T19:06:23  <jtimon> although not a huge bug, https://github.com/bitcoin/bitcoin/pull/12172 is a bugfix (and a simple one)...
494 2018-01-25T19:06:27  <wumpus> right
495 2018-01-25T19:06:46  <wumpus> please, we want to do the release, we're not going too add more stuff to 0.16.0 now unless absolutely critical
496 2018-01-25T19:07:11  <jonasschnelli> yes... we did already last week... this week is release week. :)
497 2018-01-25T19:07:24  <wumpus> it's the same story every week
498 2018-01-25T19:07:30  <jonasschnelli> heh...
499 2018-01-25T19:07:46  <wumpus> and as MarcoFalke says there's no way there's only going to be one rc
500 2018-01-25T19:07:59  <wumpus> there are going to be problems that come up in rc1 and have to be fixed
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503 2018-01-25T19:08:23  <jtimon> it's not like that +9-4 change is going to break anything, but ok
504 2018-01-25T19:08:34  <MarcoFalke> and release notes to be written ...
505 2018-01-25T19:08:56  <MarcoFalke> jtimon: It still needs review. I told you last week
506 2018-01-25T19:09:00  *** Randolf has joined #bitcoin-core-dev
507 2018-01-25T19:09:20  <jtimon> MarcoFalke: sure, it needs more review
508 2018-01-25T19:09:59  <jtimon> anyway, never mind
509 2018-01-25T19:10:05  <MarcoFalke> jtimon: I like it, but others need to like it as well
510 2018-01-25T19:10:28  <meshcollider> Release notes for major releases are so much longer than point releases but I'll try and find time if noone else does
511 2018-01-25T19:10:58  <MarcoFalke> meshcollider: Even doing half of it would help
512 2018-01-25T19:10:58  <wumpus> maybe we could put it in the wiki again?
513 2018-01-25T19:11:06  <MarcoFalke> oh right
514 2018-01-25T19:11:13  <meshcollider> wumpus: yeah +1
515 2018-01-25T19:11:25  <wumpus> #action put release 0.16 notes in wiki
516 2018-01-25T19:11:27  <achow101> yes, let's do the wiki thing again
517 2018-01-25T19:12:17  <BlueMatt> yes, #12266 needs review :/
518 2018-01-25T19:12:18  <wumpus> and re: #12270 does anyone know the exact process there?
519 2018-01-25T19:12:18  <gribble> https://github.com/bitcoin/bitcoin/issues/12266 | Move scheduler/threadGroup into common-init instead of per-app by TheBlueMatt · Pull Request #12266 · bitcoin/bitcoin · GitHub
520 2018-01-25T19:12:20  <gribble> https://github.com/bitcoin/bitcoin/issues/12270 | Update chainTxData for 0.16 by laanwj · Pull Request #12270 · bitcoin/bitcoin · GitHub
521 2018-01-25T19:12:22  <MarcoFalke> https://github.com/bitcoin-core/bitcoin-devwiki/wiki/0.16.0-Release-notes
522 2018-01-25T19:12:43  <wumpus> the release notes are quite unclear on chainTxData
523 2018-01-25T19:12:47  <BlueMatt> wumpus: maybe sipa can confirm, he's currently mid-giving-talk
524 2018-01-25T19:12:59  <kanzure> git clone https://github.com/bitcoin-core/bitcoin-devwiki.wiki.git
525 2018-01-25T19:13:03  <cfields> BlueMatt: is there q/a after?
526 2018-01-25T19:13:09  <BlueMatt> lol
527 2018-01-25T19:13:55  <kanzure> oh bpase scheduling
528 2018-01-25T19:14:06  <cfields> BlueMatt: thanks for the fix, btw. taking a look.
529 2018-01-25T19:14:21  <meshcollider> Are bpase talks recorded btw
530 2018-01-25T19:14:28  <kanzure> site says videos will be posted later
531 2018-01-25T19:15:49  <wumpus> any other topics?
532 2018-01-25T19:16:12  <achow101> coin selection?
533 2018-01-25T19:16:19  <achow101> (again)
534 2018-01-25T19:16:31  <wumpus> #topic coin selection
535 2018-01-25T19:16:40  <Murch> Currently listening to sipa @ BPASE :p
536 2018-01-25T19:16:59  <achow101> I did some more simulations, this time with varying fee rates
537 2018-01-25T19:17:02  <achow101> results here: https://github.com/bitcoin/bitcoin/pull/10637#issuecomment-359514676
538 2018-01-25T19:17:07  <wumpus> I saw a new PR was openened about that #12257, haven't had time to look at it yet
539 2018-01-25T19:17:09  <gribble> https://github.com/bitcoin/bitcoin/issues/12257 | [wallet] Use destination groups instead of coins in coin select by kallewoof · Pull Request #12257 · bitcoin/bitcoin · GitHub
540 2018-01-25T19:17:46  <achow101> the results don't seem to be very impressive though
541 2018-01-25T19:18:00  <meshcollider> wumpus: that's pretty orthogonal I think, it's a privacy thing rather than an efficient selection thing
542 2018-01-25T19:18:12  <wumpus> ok...
543 2018-01-25T19:18:58  <achow101> I'm not sure of BnB is going to be much of an improvement over what we currently have
544 2018-01-25T19:19:15  <achow101> s/of/that/
545 2018-01-25T19:19:35  <achow101> at the very least, it doesn't do worse
546 2018-01-25T19:19:49  <wumpus> that's already good if it is a win in runtime
547 2018-01-25T19:20:09  <achow101> it actually runs a lot slower
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549 2018-01-25T19:20:15  <meshcollider> Oh
550 2018-01-25T19:20:21  <wumpus> ouch
551 2018-01-25T19:20:39  <achow101> I noticed during the simulations that running BnB takes longer since it has to exhaust the search before it continues with the current algo
552 2018-01-25T19:20:46  <morcos> Should we save this conversation for when Murch can join?
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554 2018-01-25T19:21:04  <achow101> It seems to only be faster when it can find a solution, which is not all that frequent
555 2018-01-25T19:21:59  <Murch> achow101: I just had a look at the results. How come that there were several hundred instances of BnB use but only one fewer change output created than without BnB?
556 2018-01-25T19:22:47  <Murch> I think there is an unexpected behavior there.
557 2018-01-25T19:23:07  <achow101> oh, that's strange
558 2018-01-25T19:24:57  *** AaronvanW has quit IRC
559 2018-01-25T19:26:08  <achow101> I will look into that
560 2018-01-25T19:26:46  *** max123___ has quit IRC
561 2018-01-25T19:27:21  <wumpus> thanks
562 2018-01-25T19:27:22  <wumpus> any other topics?
563 2018-01-25T19:27:36  <Chris_Stewart_5> achow101: It seems like the algo would obviously be slower if it reverts to the old algo?
564 2018-01-25T19:27:45  <jtimon> perhaps a short meeting today?
565 2018-01-25T19:27:46  <achow101> Chris_Stewart_5: yes
566 2018-01-25T19:28:01  <meshcollider> jtimon: yes seems sipa's talk has stolen the show today :)
567 2018-01-25T19:28:03  <achow101> Chris_Stewart_5: logically, reverting means that it's running more code, so it kinda has to be slower
568 2018-01-25T19:28:04  <Chris_Stewart_5> so the high failure rate is the main concern?
569 2018-01-25T19:28:20  <jtimon> meshcollider: oh, what talk?
570 2018-01-25T19:28:39  <meshcollider> jtimon: at bpase
571 2018-01-25T19:28:40  <wumpus> jtimon: yep
572 2018-01-25T19:28:54  <wumpus> let's review stuff for 0.16 after the talk :)
573 2018-01-25T19:29:44  *** Murch has quit IRC
574 2018-01-25T19:29:55  <jtimon> oh, I'll wait for the video
575 2018-01-25T19:30:28  <wumpus> #endmeeting
576 2018-01-25T19:30:28  <lightningbot> Meeting ended Thu Jan 25 19:30:28 2018 UTC.  Information about MeetBot at http://wiki.debian.org/MeetBot . (v 0.1.4)
577 2018-01-25T19:30:28  <lightningbot> Minutes:        http://www.erisian.com.au/meetbot/bitcoin-core-dev/2018/bitcoin-core-dev.2018-01-25-19.00.html
578 2018-01-25T19:30:28  <lightningbot> Minutes (text): http://www.erisian.com.au/meetbot/bitcoin-core-dev/2018/bitcoin-core-dev.2018-01-25-19.00.txt
579 2018-01-25T19:30:28  <lightningbot> Log:            http://www.erisian.com.au/meetbot/bitcoin-core-dev/2018/bitcoin-core-dev.2018-01-25-19.00.log.html
580 2018-01-25T19:30:45  <jonasschnelli> Where is sipas talk?
581 2018-01-25T19:30:59  <Chris_Stewart_5> is bpase live on youtube?
582 2018-01-25T19:31:08  <meshcollider> https://cyber.stanford.edu/bpase18
583 2018-01-25T19:31:24  <instagibbs> murchandamus, achow101 yes those results look really strange
584 2018-01-25T19:31:41  <meshcollider> Chris_Stewart_5: I couldn't find it, kanzure said they'll be posted later
585 2018-01-25T19:31:46  <instagibbs> now that i think about it, highly improbably? unless classical selection ends up doing no-change solution a lot more somehow
586 2018-01-25T19:32:08  <instagibbs> or BnB only finds the dumb solutions that classic selection would have found
587 2018-01-25T19:32:32  <achow101> instagibbs: murchandamus perhaps review what I'm using to simulate?
588 2018-01-25T19:32:35  <achow101> It's here: https://github.com/achow101/bitcoin/tree/bnb-simulate
589 2018-01-25T19:32:51  <meshcollider> Also the coredev channel is invite only now? I need an invite to it :)
590 2018-01-25T19:32:55  <sipa> meshcollider: are you at bpase?
591 2018-01-25T19:32:58  <achow101> I may have screwed up how I count things
592 2018-01-25T19:33:05  <achow101> meshcollider: yes, it's invite only now
593 2018-01-25T19:33:11  <meshcollider> sipa: no unfortunately not
594 2018-01-25T19:33:14  <instagibbs> achow101, print out how often core selection gets no change solution, as a start
595 2018-01-25T19:33:28  <sipa> i believe videos will be online later
596 2018-01-25T19:33:29  <instagibbs> in both scenarios, with and without bnb
597 2018-01-25T19:33:29  <jonasschnelli> thanks
598 2018-01-25T19:34:19  <kanzure> it's surprisingly difficult to transcribe without being there and also without audio/video
599 2018-01-25T19:34:28  <kanzure> i can only guess what was said, but i think i could have >20% accuracy
600 2018-01-25T19:34:36  <meshcollider> kanzure: are you op in the coredev channel
601 2018-01-25T19:34:45  <sipa> kanzure: lol!
602 2018-01-25T19:34:45  <kanzure> nah, i'll ping someone for you
603 2018-01-25T19:34:51  <achow101> meshcollider: ask jnewbery or morcos
604 2018-01-25T19:34:58  *** ChanServ sets mode: +o sipa
605 2018-01-25T19:35:02  <sipa> i haz op
606 2018-01-25T19:35:15  <sipa> oh, coredev channel, not core-dev
607 2018-01-25T19:35:16  <sipa> nvm
608 2018-01-25T19:35:19  <kanzure> meshcollider: moderator says you are good under meshcollider name... pm me the channel you think you're joining.
609 2018-01-25T19:35:21  *** sipa sets mode: -o sipa
610 2018-01-25T19:35:31  <achow101> sipa: aren't you supposed to be giving a talk?
611 2018-01-25T19:35:38  <sipa> achow101: just finished
612 2018-01-25T19:35:53  *** Abraham80Schumm has joined #bitcoin-core-dev
613 2018-01-25T19:35:54  <kanzure> irc on stage is fine
614 2018-01-25T19:35:56  <kanzure> standard procedure
615 2018-01-25T19:35:58  <Chris_Stewart_5> lol
616 2018-01-25T19:36:09  <Chris_Stewart_5> priorties! There is a core-dev meeting!
617 2018-01-25T19:36:24  <kanzure> i assume it was a musig talk
618 2018-01-25T19:36:29  *** mxg has quit IRC
619 2018-01-25T19:36:29  <sipa> kanzure: nooe!
620 2018-01-25T19:36:32  <sipa> nope!
621 2018-01-25T19:36:45  <kanzure> accuracy going down.. :-)
622 2018-01-25T19:37:20  *** jb55 has quit IRC
623 2018-01-25T19:38:13  <sipa> it was on bellare-neven multi-signatures
624 2018-01-25T19:38:22  <achow101> so almost musig
625 2018-01-25T19:38:47  <sipa> (and generally the advantages of schnorr-like signature schemes, including the ability to use musig to aggregate keys)
626 2018-01-25T19:39:15  <kanzure> ah okay, these things http://diyhpl.us/wiki/transcripts/bitcoin-core-dev-tech/2017-09-06-signature-aggregation/
627 2018-01-25T19:40:02  <sipa> yup
628 2018-01-25T19:40:59  <cfields> kanzure: thanks a ton for that, btw. There's no wikipedia entry for BN sigs, so I always end up hitting that link when I google for the paper
629 2018-01-25T19:41:13  <kanzure> yep no problem
630 2018-01-25T19:42:49  <kanzure> really weird how a lot of this stuff just gets lost
631 2018-01-25T19:42:51  <jonasschnelli> BlueMatt: GuessVerificationProgress needs cs_main, right? (accessing pindex->nChainTx )
632 2018-01-25T19:43:47  <jojeyh> sipa, is it possible to see these talks live ?
633 2018-01-25T19:43:49  *** meshcollider has quit IRC
634 2018-01-25T19:43:59  <jojeyh> or even a recording i guess
635 2018-01-25T19:44:03  <sipa> kanzure: at RWC we ran into Neven, who sounded very excited that someone may actually use his scheme :)
636 2018-01-25T19:44:05  *** meshcollider has joined #bitcoin-core-dev
637 2018-01-25T19:44:14  <sipa> jojeyh: there will be a recording later
638 2018-01-25T19:44:20  <jojeyh> danke
639 2018-01-25T19:44:22  <kanzure> sipa: has he reviewed the paper yet?
640 2018-01-25T19:45:16  <BlueMatt> jonasschnelli: yup
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648 2018-01-25T20:01:14  <instagibbs> gmaxwell, morcos some not completely thought out discussion on fee bumping/transaction replacement #12271 . I haven't really seen a good central location for discussion, so I continue re-inventing the wheel
649 2018-01-25T20:01:16  <gribble> https://github.com/bitcoin/bitcoin/issues/12271 | Improving fee bumping in Core · Issue #12271 · bitcoin/bitcoin · GitHub
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664 2018-01-25T20:41:22  <luke-jr> :o "Two new instructions (addex and vmsumudm) introduced to accelerate arbitrary-precision integer arithmetic, and specifically to accelerate Blockchain’s implementation of elliptical curve encryption signature algorithm. The OV bit is employed to provide an additional, independent carry status bit, allowing software to parallelize carry propagation."
665 2018-01-25T20:43:35  *** larafale has quit IRC
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667 2018-01-25T20:46:19  <wumpus> luke-jr: whoa, interesting
668 2018-01-25T20:48:09  <achow101> luke-jr: what is that for?
669 2018-01-25T20:48:27  *** larafale has quit IRC
670 2018-01-25T20:49:27  <wumpus> powerpc 9 ISA apparently
671 2018-01-25T20:50:39  <luke-jr> achow101: POWER9
672 2018-01-25T20:50:57  *** larafale has joined #bitcoin-core-dev
673 2018-01-25T20:51:27  *** gaf_ has joined #bitcoin-core-dev
674 2018-01-25T20:52:49  <luke-jr> "Add Extended using alternate carry bit Z23-form" and "Vector Multiply-Sum Unsigned Doubleword Modulo VA-form"
675 2018-01-25T20:54:25  <luke-jr> "The unsigned integer value in doubleword element 0 of VR[VRA] is multiplied by the unsigned integer value in doubleword element 0 of VR[VRB] to produce a 128-bit product. The unsigned integer value in doubleword element 1 of VR[VRA] is multiplied by the unsigned integer value in doubleword element 1 of VR[VRB] to produce a 128-bit product. The two 128-bit unsigned integer products and the 128-bit unsigned integer in VR[VRC] are summed.
676 2018-01-25T20:54:26  <wumpus> vmsumudm seems SIMD 2x  64*64 -> 128 bit multiplication, where the two results are added to a third 128 bit value
677 2018-01-25T20:54:27  <luke-jr> The low-order 128 bits of the sum are placed into VR[VRT]. Any carry out or overflow status is discarded."
678 2018-01-25T20:55:10  <luke-jr> hopefully this is compatible with libsecp256k1's existing optimisations
679 2018-01-25T20:55:52  <wumpus> that seems quite useful for the kind off mult-sum operations in secp256k1 secp256k1_fe_mul_inner and such
680 2018-01-25T20:55:54  <luke-jr> https://wiki.raptorcs.com/w/images/c/cb/PowerISA_public.v3.0B.pdf
681 2018-01-25T20:56:12  *** mandric has joined #bitcoin-core-dev
682 2018-01-25T20:57:58  * luke-jr wonders if it is still useful for the new aggregation-capable signature scheme
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688 2018-01-25T21:02:32  <wumpus> I'd be surprised if the low level operations are not still the same
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