| Posted | Nick | Remark | |
|---|---|---|---|
| #openstack-nova - 2019-07-03 | |||
| 18:25:19 | efried | I still don't feel strongly enough to block | |
| 18:25:28 | sean-k-mooney | efried: for context the CAT stuff im working on here https://review.opendev.org/#/c/662264/ which you would also like me to track only with numa awer placment was requested for pike | |
| 18:25:38 | dansmith | if we didn't have basic gpu stuff that we have today at this point, I think we'd probably be having a much different conversation.. and not a fun one. | |
| 18:26:17 | efried | Tell ya, though, if sam_subtree lands pretty soon, as appears likely to do, that may be enough to make me -1 the vgpu affinity spec. | |
| 18:26:22 | dansmith | I thought you were the "don't wait forever for perfect" guy? :) | |
| 18:26:57 | efried | Totally. And I have no illusions that numa-in-placement will be perfect right away | |
| 18:27:19 | dansmith | well, if you think that's going to happen, you should just preemtively -1 it, or | |
| 18:27:21 | efried | which btw is why we should not be arguing about hugepages and splitting CPUs finer than per-numa-node. | |
| 18:27:28 | dansmith | or -1 it contingent on that merging when you think it will | |
| 18:27:44 | dansmith | because really, messaging the likelihood of this being a thing is pretty important to us | |
| 18:28:24 | efried | and why we punted on can_split | |
| 18:28:50 | efried | "messaging the likelihood of this being a thing" is actually the best argument I've heard so far. | |
| 18:29:52 | dansmith | it's the most important I think | |
| 18:29:58 | sean-k-mooney | well if we cant have memory fine then a numa node we can implemenat CAT | |
| 18:30:17 | sean-k-mooney | the cpus inventories and cache inventores shoudl be in the same RP | |
| 18:30:26 | sean-k-mooney | and cache regins are finer then numa node | |
| 18:30:40 | sean-k-mooney | we can have mulplie l3 cache regins in the same numa node | |
| 18:30:49 | efried | understood. | |
| 18:30:56 | efried | So | |
| 18:31:23 | sean-k-mooney | it would basicaly be a 3 level tree | |
| 18:31:25 | efried | when we implement CAT *after* having implemented NUMA topo as its own thing, we can reshape the CPUs and L3s down into grandchild providers. | |
| 18:31:45 | sean-k-mooney | yes we could | |
| 18:32:00 | efried | but we should not be trying to solve CAT preemptively. | |
| 18:32:02 | sean-k-mooney | or we could do that first and reshap them under the numa node when they are added | |
| 18:32:28 | efried | I owe you a response in the pqos spec, but that doesn't buy us anything at this point. | |
| 18:32:48 | sean-k-mooney | we talked about it a little today in our squad call | |
| 18:33:02 | sean-k-mooney | im going to simplfy it and proably add a depency on some of the placmenet stuff | |
| 18:33:24 | sean-k-mooney | i will likely make memory bandwith depend on the numa in placment spec | |
| 18:33:38 | sean-k-mooney | i would like to keep cache not depenent on tha tbut may on same tree | |
| 18:34:34 | sean-k-mooney | well it depends i have to see is there a way to us more of the plamcent stuff | |
| 18:35:05 | sean-k-mooney | it significantly incresase the risk we wont have CAT in train however | |
| 18:35:53 | efried | I'm addressing similar concerns in the providers.yaml spec | |
| 18:36:47 | sean-k-mooney | ill admit i have nto really been following that one. i kindof got burt out on that topic last cycle | |
| 18:37:05 | sean-k-mooney | is it approching agreement or still in flux | |
| 18:37:36 | efried | Dakshina has me convinced that there's a reason to do cache in child providers. But only to ensure that one request group gets all its cacheways from one package -- *not* because we can do anything about affinity. | |
| 18:37:40 | efried | however | |
| 18:37:44 | efried | in tree | |
| 18:37:59 | efried | we can do affinity after GET /a_c via the NUMATopologyFilter | |
| 18:39:54 | efried | was gonna say that couples the filter to libvirt, but that's already dismally true anyway. | |
| 18:40:26 | efried | sean-k-mooney: I haven't posted those comments yet, but will ping you once I have. | |
| 18:41:06 | sean-k-mooney | ok. im goign to leave the rebasing it so that we can continue the disucssion in one place | |
| 18:41:19 | sean-k-mooney | are you off for the 4th of july weekend? | |
| 18:41:29 | sean-k-mooney | i assume yes | |
| 18:41:49 | efried | and dansmith, I'll review tetsuro's same_subtree patch. I have the broad strokes from an earlier iteration, but it's now been squashed and reworked a little bit, so I need to refresh and see how far off it still is. And if it's as close as I think, I'll take a stand on the vgpu affinity spec. | |
| 18:42:05 | dansmith | thanks | |
| 18:42:06 | efried | sean-k-mooney: yes, I'll be off Th & F | |
| 18:42:31 | efried | Friday is my 22nd anniversary :) | |
| 18:43:19 | dustinc | efired: congrats! | |
| 18:43:20 | sean-k-mooney | 22nd, surly not wedding? unless you were married quite young | |
| 18:43:24 | dustinc | efried.. | |
| 18:44:03 | sean-k-mooney | as in before its legal. | |
| 18:44:12 | efried | hehe. I was married at 20 | |
| 18:44:30 | efried | so it was legal to marry, just not legal to buy alcohol :P | |
| 18:44:45 | efried | thanks dustinc | |
| 18:45:26 | sean-k-mooney | well congrats and i always get confused about how the us legislates for mimium ages for things | |
| 18:45:39 | efried | you're not the only one | |
| 18:46:20 | dustinc | can active duty still buy beer/wine at 18 on base? | |
| 18:46:23 | dustinc | gets even more confusing | |
| 18:46:25 | efried | 21 for alcohol is country-wide at this point. Louisiana was (I think) the last one to capitulate in the late '90s (from 18) when the fed cut off their road funding. | |
| 18:47:13 | sean-k-mooney | you can drive from 16 and get a gun licence at 16 or 18 right and marry at like 16-18 depending on the state | |
| 18:47:17 | efried | sean-k-mooney: I grew up near London, where the official age was 18 but not enforced at all. I was pubbing from 14. | |
| 18:47:21 | sean-k-mooney | and vote at 18 too right | |
| 18:48:06 | dustinc | the problem with voting here is you can vote at 18 but nobody does until 60 sigh... | |
| 18:48:08 | efried | vote at 18, yes, that was a big deal ~20y ago. Driving depends on the state, but it's 16 in most places. You can get an exception for "hardship" or farming (which are the same thing to me :P ) | |
| 18:48:16 | efried | that's not a problem | |
| 18:48:34 | efried | the problem with voting is that you are allowed to do so despite being completely ignorant | |
| 18:48:49 | dustinc | that doesn't change with age | |
| 18:48:55 | efried | swhat I'm sayin. | |
| 18:49:01 | dustinc | gotcha :) | |
| 18:49:23 | dustinc | voting is really complicated in some states too | |
| 18:49:29 | sean-k-mooney | ya you can get a work vechles lices that allows you do drive a tracker or combin haveser at 16 in ireland but need to be 18 to get a car license which is ... odd | |
| 18:49:41 | dustinc | my state votes by mail, others you have to stand in line for hours | |
| 18:50:00 | dustinc | do you have graduated licensing for motorcycles? | |
| 18:50:06 | sean-k-mooney | yes | |
| 18:50:30 | dustinc | we get 18 year olds buying a 1000cc for their first bike here | |
| 18:50:31 | dustinc | so annoying | |
| 18:51:25 | sean-k-mooney | http://www.rsa.ie/Documents/Learner%20Drivers/Third%20Directive/bikes_chart_3rd_directive_V2.pdf | |
| 18:51:30 | efried | In the UK didn't they pass a thing where you have to have a decal of some sort for the first year after you get your license, so other motorists are warned that you still suck? | |
| 18:51:52 | sean-k-mooney | http://www.rsa.ie/en/RSA/Learner-Drivers/Motorcyclists/Licence-categories-explained/ | |
| 18:52:29 | sean-k-mooney | efried: thats in ireland | |
| 18:52:35 | sean-k-mooney | you have N placnete for novice | |
| 18:52:47 | sean-k-mooney | *plates | |
| 18:53:39 | sean-k-mooney | i like the metric system but i really dont understadn inutitivly how much 11KW is vs horsepower | |
| 18:54:41 | dustinc | about 14hp according to google..dunno how you can even get around with so little | |
| 18:55:01 | dustinc | a common starter bike here is 250cc twin and they make around 35hp I think | |
| 18:55:05 | dustinc | and are sooo slow | |
| 18:55:08 | sean-k-mooney | what does a 125cc engin normally put out | |
| 18:55:45 | dustinc | not sure, guessing 11kw/14hp is probably pretty typical | |
| 18:55:58 | dustinc | we just don't have many street-legal 125cc here | |
| 18:56:13 | sean-k-mooney | ya that is the smalest license you get when your 16 | |
| 18:56:24 | sean-k-mooney | so its mainly scotters and dirt bikes | |
| 18:57:05 | sean-k-mooney | that said i was not expecting thise to qualify https://www.bennetts.co.uk/bikesocial/news-and-views/advice/new-riders-and-training/top-10-a1-licence-friendly-bikes-2018 | |
| 18:57:15 | dustinc | it should be that way here, maybe start at 250cc since 125cc is hard to find, but people starting out on 110hp 600cc sport bikes (or worse...180-200hp liter bikes) is common and causes lots of accidents..and then expensive insurance and stupid laws | |
| 18:59:00 | sean-k-mooney | i guess you really dont need the same level of raw horse power vs a car. anyway i better finish up my email and sign off for the evening o/ | |
| 19:00:09 | dustinc | you guys get some cool little bikes there... | |
| 19:00:49 | sean-k-mooney | unfortunetly i dont have a bike license so cant ride any of them | |
| 19:01:20 | sean-k-mooney | i have though about getting it but mainly since i never drive my car and have been thinink of gettin rid of it but still should have somthing | |
| 19:02:14 | qqmber | sean-k-mooney: I just ceated a new instance and in this one worked (attaching a new volume)... Crap... maybe the instance is screwed :( | |
| 19:03:13 | sean-k-mooney | qqmber: it might be related to your iscsi backend | |
| 19:03:37 | sean-k-mooney | do you have issue conencting to it form other vms on the same host | |