21:03:50 <b1airo> #startmeeting scientific-sig
21:03:51 <openstack> Meeting started Tue Mar 20 21:03:50 2018 UTC and is due to finish in 60 minutes.  The chair is b1airo. Information about MeetBot at http://wiki.debian.org/MeetBot.
21:03:52 <openstack> Useful Commands: #action #agreed #help #info #idea #link #topic #startvote.
21:03:54 <openstack> The meeting name has been set to 'scientific_sig'
21:04:05 <b1airo> morning!
21:04:21 <oneswig> Hi b1airo - apologies, I am on a train, in a tunnel
21:04:34 <b1airo> #chair oneswig
21:04:34 <openstack> Current chairs: b1airo oneswig
21:04:36 <oneswig> highly likely to be intermittently present :-)
21:04:48 <martial> same as stig
21:05:08 <oneswig> hey martial
21:05:12 <b1airo> oh come now oneswig, in Australia the wireless broadband service is generally better than fixed line!
21:05:19 <martial> Hi Stig, Blair
21:05:23 <b1airo> #chair martial
21:05:24 <openstack> Current chairs: b1airo martial oneswig
21:05:34 <oneswig> I am not in a train in Australia...
21:05:40 <oneswig> ... alas
21:05:47 <b1airo> :-)
21:05:53 <martial> we are in the "Network Challenges" session of the conference with a presentation from Internet 2
21:06:19 <b1airo> ha
21:06:30 <oneswig> I've heard of such challenges
21:06:31 <b1airo> martial: did you get anything back from Wilfred/Paul ?
21:07:49 <martial> nothing unfortunately
21:07:55 <martial> or Enol for that matter
21:07:56 <b1airo> i've been up until past 3am this morning dealing with storage "challenges", so if no-one else shows up to this meeting in the next 5 mins i'll be happy to cut it short
21:08:19 <b1airo> *grumble*
21:08:29 <martial> but I got the slide deck from Zhipeng about Blockchain use in the Passport program
21:08:32 <oneswig> I'll be dropping off around then due to continuing my journey on bicyle
21:08:38 <oneswig> What's the news on storage?
21:09:09 <martial> b1airo if interested check goo.gl/nPXeMR
21:09:37 <b1airo> just the delicacy of a Ceph pool with a couple hundred OSDs over 95% full
21:09:57 <martial> oh Mike would have tons of things to say about that, he had that glitch
21:10:06 <oneswig> There's a chewy problem
21:11:02 <b1airo> we've added some more OSDs for the moment, but the iffy CRUSH distribution in our present setup means there's quite a period of yoyo-ing before things start to trend down for the most full OSDs
21:11:20 <b1airo> i saw one at 96.82%
21:11:44 <b1airo> somewhat too close to the 97% failsafe full ratio
21:12:49 <b1airo> we tried to copy a 100TB RBD into a new pool on different hardware, but a few OSDs in the source pool didn't seem to like the idea and stopped processing other work for some reason
21:13:41 <b1airo> alright, i'll run through the agenda for posterity
21:13:52 <oneswig> Someone I saw today was reporting a 30 minute commit latency for IO to their glusterfs. yikes
21:13:53 <oneswig> BTW b1airo: I thought your roundup on GPU passthrough was really helpful.  Thanks for taking the trouble.
21:14:51 <b1airo> cool, i you thought so then it was probably ok :-)
21:15:40 <b1airo> i was reminded about NVIDIA's HGX-1 architecture afterwards too, but that's not generally available outside the big customers afaik
21:16:09 <b1airo> apparently they will have some big feature announcements around a 2nd gen of that platform soon
21:16:15 <oneswig> don't know it, sorry - not an nvidia fanboi
21:16:29 <oneswig> ok, train's in, gotta go
21:16:35 <oneswig> until next time
21:17:03 <martial> we are having a private meeting today indeed :)
21:19:39 <martial> b1airo: end of meeting?
21:20:31 <b1airo> sry, distracted by a small person
21:21:02 <martial> not too much happening today, so I would say let's skip?
21:21:05 <b1airo> #topic Forum Brainstorming
21:21:29 <b1airo> martial: yeah, i'll just write these things up for the logs but we can revisit next week
21:21:39 <martial> cool
21:21:56 <b1airo> The Forum process has started for Vancouver'18
21:22:26 <b1airo> we're are the brainstorming stage where the community starts throwing out ideas for topics and sessions
21:22:35 <martial> what is the link for the etherpad?
21:22:43 <b1airo> i've started an etherpad here:
21:22:50 <b1airo> #link https://etherpad.openstack.org/p/YVR18-scientific-sig-brainstorming
21:23:18 <b1airo> which is also linked from the Forum wiki page, #link: https://wiki.openstack.org/wiki/Forum/Vancouver2018#Etherpads_from_Teams.2C_Working_Groups.2C_and_SIGs
21:24:04 <b1airo> so if you have ideas for topics of interest to the Scientific OpenStack ops/user community then please throw them in
21:24:39 <b1airo> i've taken the liberty of kicking things off with a state of the art/practice on GPUs with OpenStack
21:24:51 <b1airo> #topic Discussion regarding state of GPU passthrough and interest in collaborating to resolve security issues
21:24:53 <martial> I see that
21:25:21 <martial> is that a follow up from the conversation you talked to us in Sydney?
21:25:54 <b1airo> partly, yes
21:26:16 <b1airo> not really much more to say about this right now beyond what I summarised on-list yesterday, happy to talk more if people have specific questions
21:27:21 <b1airo> i also know some scant technical details (for specific devices) about a couple of pci config space windows that should be closed to guests, e.g., VBIOS flash
21:27:53 <b1airo> so that could be a start to adding and testing pci-quirks in QEMU
21:28:38 <b1airo> i'd really like to find a register or something that does "a bad thing" (tm) that could be used as a demonstrable exploit - that would probably garner some more attention
21:28:53 <b1airo> and would be a useful test-case for quirks
21:29:09 <b1airo> #topic AOB
21:29:18 <b1airo> Anything else to mention?
21:30:04 <martial> not much from my side, the workshop is going very well
21:30:06 <martial> very busy
21:30:34 <b1airo> great
21:30:51 <martial> but we will have the pleasure of doing the second day partially on gotomeeting due to a fair amount of snow
21:31:48 <martial> the follow up from this meeting is expected to be at the Vancouver Summit
21:32:19 <b1airo> look forward to hearing the round-up from it then
21:32:34 <martial> yes Sir, will provide some information
21:32:38 <b1airo> we might have to defer that till next fortnight if we have Zhipeng next week
21:32:55 <martial> seems to be the case for next time indeed
21:33:09 <martial> good news still
21:35:10 <b1airo> ok all done then
21:35:21 <b1airo> catch you next week!
21:35:24 <b1airo> #endmeeting