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| openstackgerrit | Sundar Nadathur proposed openstack/cyborg master: Specification for Cyborg Agent-Driver API. https://review.openstack.org/561849 | 05:29 |
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| openstackgerrit | wangzhh proposed openstack/cyborg master: Load cyborg-api app with paste_deploy https://review.openstack.org/570931 | 06:13 |
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| openstackgerrit | Merged openstack/cyborg master: Add note to dev_setup doc https://review.openstack.org/572334 | 08:02 |
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| openstackgerrit | wangzhh proposed openstack/cyborg master: Remove redundant import https://review.openstack.org/572766 | 13:16 |
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| zhipeng | #startmeeting openstack-cyborg | 14:00 |
| openstack | Meeting started Wed Jun 6 14:00:42 2018 UTC and is due to finish in 60 minutes. The chair is zhipeng. Information about MeetBot at http://wiki.debian.org/MeetBot. | 14:00 |
| openstack | Useful Commands: #action #agreed #help #info #idea #link #topic #startvote. | 14:00 |
| *** openstack changes topic to " (Meeting topic: openstack-cyborg)" | 14:00 | |
| openstack | The meeting name has been set to 'openstack_cyborg' | 14:00 |
| zhipeng | #topic Roll Call | 14:00 |
| *** openstack changes topic to "Roll Call (Meeting topic: openstack-cyborg)" | 14:00 | |
| zhipeng | #info Howard | 14:00 |
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| Sundar | #info Sundar | 14:03 |
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| sum12 | #info sum12 | 14:05 |
| NokMikeR | #info Mike | 14:08 |
| zhipeng | okey let's start | 14:11 |
| zhipeng | we have only one topic today :) | 14:11 |
| zhipeng | #topic rocky spec finalization | 14:11 |
| *** openstack changes topic to "rocky spec finalization (Meeting topic: openstack-cyborg)" | 14:11 | |
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| zhipeng | let's start from quota spec | 14:12 |
| zhipeng | which xinran__ has been working on | 14:13 |
| Sundar | For https://review.openstack.org/#/c/554717/, we probably need at least one +1 from Nova | 14:13 |
| zhipeng | Sundar got it :) | 14:13 |
| zhipeng | we get to that | 14:13 |
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| xinran__ | #info xinran__ | 14:13 |
| Sundar | Sure, zhipeng. NP | 14:14 |
| zhipeng | #link https://review.openstack.org/560285 | 14:14 |
| xinran__ | Hi for quota spec, do you think implement this on api layer? | 14:14 |
| Sundar | For quotas, we have had a discussion with Nova folks: http://lists.openstack.org/pipermail/openstack-dev/2018-May/130563.html | 14:15 |
| Sundar | It doesn;t look like there is any foolproof way to enforce quotas today | 14:15 |
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| Sundar | So, you guys cna make a call | 14:15 |
| zhipeng | yes this is what I understand as well | 14:15 |
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| xinran__ | I mean when there is a new api request, we should check/update quota | 14:15 |
| xinran__ | It also depend on how cyborg interact with nova. | 14:16 |
| zhipeng | xinran__ what is your current proposal ? | 14:17 |
| xinran__ | If nova call agent directly, we should change it | 14:17 |
| xinran__ | On api layer | 14:17 |
| zhipeng | i'm inclined to that option | 14:17 |
| zhipeng | i don't see a good scenario for nova to call cyborg-agent directly | 14:17 |
| xinran__ | Yes | 14:18 |
| shaohe_feng | why nova need to call agent? | 14:18 |
| xinran__ | the current nova/cyborg interaction is calling agent I am not sure about this | 14:19 |
| xinran__ | What do you guys think? | 14:19 |
| zhipeng | no atm we have conductor interact with placement | 14:19 |
| zhipeng | that is all | 14:19 |
| zhipeng | there will be/should be the api layer interaction | 14:19 |
| xinran__ | I mean the current spec :) | 14:19 |
| zhipeng | but we are not there yet | 14:19 |
| shaohe_feng | oh, if nova call cyborg-agent, there is a problem. | 14:19 |
| zhipeng | I would suggest to have it on the api layer | 14:20 |
| Sundar | Xinran, can you clarify which spec says Nova compute does or should call into Cyborg agent? | 14:20 |
| xinran__ | Let me find it | 14:21 |
| zhipeng | okey for the spec itself in the current shape | 14:21 |
| zhipeng | everyone happy with it ? | 14:21 |
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| Sundar | zhipeng, the present scheme is not ideal, but I have no objections, since I know it is a priority for others. :) | 14:22 |
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| Sundar | We can improve upon it over time | 14:23 |
| zhipeng | Sundar agree :) | 14:23 |
| shaohe_feng | IMO, cyborg can do lazy quota. | 14:23 |
| zhipeng | so then let's mark the spec ok to go | 14:23 |
| Sundar | Agreed | 14:23 |
| xinran__ | https://review.openstack.org/#/c/566798/5/doc/specs/rocky/compute-node.rst | 14:23 |
| zhipeng | #action quota spec https://review.openstack.org/#/c/560285/ ready | 14:23 |
| xinran__ | What to you mean lazy quota shaohe_feng | 14:24 |
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| shaohe_feng | which means, even scheduler pass, cyborg will still refuse accelerator quest for quota failed. | 14:25 |
| Sundar | Xinran, compute-node (os-acc) spec does not say that Nova compute will call directly into Cyborg agent. It says that Nova compute should call into os-acc, which should call into Cyborg agent. | 14:25 |
| shaohe_feng | os-acc can call cyborg agent? | 14:25 |
| zhipeng | guys this is another problem | 14:26 |
| zhipeng | let's move on :) | 14:26 |
| zhipeng | we have limited time for a lot of specs | 14:26 |
| shaohe_feng | Does that means nova will call cyborg agent without api? | 14:26 |
| zhipeng | moving on | 14:26 |
| zhipeng | Li Liu's two patches on metadata and programming | 14:27 |
| shaohe_feng | xinran__, lazy quota, just performance issue. | 14:27 |
| xinran__ | shaohe_feng: ok got it | 14:27 |
| zhipeng | #link https://review.openstack.org/558265 | 14:27 |
| zhipeng | any further comment on the metadata spec ? | 14:28 |
| xinran__ | Sundar: the “directly” I mean is not pass api layer | 14:28 |
| Sundar | I thought Li Liu added a function name. Looking for it | 14:28 |
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| zhipeng | also Melissa | 14:29 |
| zhipeng | @Guest24200 | 14:29 |
| zhipeng | has Xilinx team also went over the spec ? | 14:29 |
| zhipeng | Sundar has Li Liu addressed your comment ? | 14:32 |
| NokMikeR | what bootstraps the driver instance in the first place? e.g if a driver is requested that may require an additional tool to already be present like a driver deamon from the fpga vendor to be already in place. | 14:32 |
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| Sundar | During last spec day, Li Liu and I agreed to add a function name to the bitstream spec as an optional property. #link http://eavesdrop.openstack.org/irclogs/%23openstack-cyborg/%23openstack-cyborg.2018-05-09.log.html#t2018-05-09T19:00:22 | 14:32 |
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| Sundar | This is also documented in the scheldung spec #link https://review.openstack.org/#/c/554717/ | 14:33 |
| Sundar | *scheduling | 14:33 |
| Sundar | Can we get that addressed? | 14:34 |
| zhipeng | sure | 14:34 |
| zhipeng | #action metadata spec https://review.openstack.org/558265 to add a function name | 14:34 |
| zhipeng | other than that there should be no problems right ? | 14:35 |
| Sundar | Zhipeng, yes. Thanks | 14:36 |
| zhipeng | sounds great :) | 14:36 |
| zhipeng | #link https://review.openstack.org/#/c/559395/ | 14:37 |
| zhipeng | programming | 14:37 |
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| zhipeng | i think other than Zuul, we should be happy about this now | 14:37 |
| zhipeng | :P | 14:37 |
| Sundar | I don't see any issue with the basics. We don't have an end-to-end flow that uses this. I guess this is meant to be a standalone API? | 14:38 |
| zhipeng | yep | 14:39 |
| Sundar | OK. We can tweak this later as needed, when we need to define end-to-end flows. With that understanding, we can approve it as it stands. Sounds good? | 14:40 |
| zhipeng | shaohe_feng and others ? | 14:41 |
| zhipeng | at least from the review I see Li Liu had addressed all the comments | 14:41 |
| shaohe_feng | zhipeng, OK, it looks good for me | 14:42 |
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| zhipeng | cool | 14:43 |
| zhipeng | #action programming spec https://review.openstack.org/#/c/559395/ ready to go | 14:43 |
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| zhipeng | okey let's go to Sundar's four spec | 14:44 |
| zhipeng | Sundar which one do you think is ready to go ? | 14:44 |
| Sundar | All of them :) | 14:45 |
| zhipeng | haha great | 14:45 |
| Sundar | I will still request Nova folks to do a +1 on scheduling spec. | 14:45 |
| zhipeng | yes that one has gone through a lot | 14:45 |
| Sundar | For os-acc also, we should probably get Nova ok, right? | 14:45 |
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| shaohe_feng | os-acc will call cyborg-agent? | 14:46 |
| shaohe_feng | and nova will call os-acc？ | 14:46 |
| zhipeng | https://review.openstack.org/#/c/566798/ | 14:46 |
| zhipeng | this one right ? | 14:46 |
| Sundar | zhipeng, yes | 14:47 |
| zhipeng | shaohe_feng I think nova-compute calls os-acc to do the attach/detach | 14:47 |
| zhipeng | but I think the original goal of os-acc is to serve as a library | 14:47 |
| Sundar | shaohe: Yes, as zhipeng says. | 14:48 |
| zhipeng | Sundar does nova-compute also calls os-brick or os-vif ? | 14:48 |
| Sundar | zhipeng, yes. It is still a library that Cyborg provides, like os-vif for Neutron | 14:48 |
| Sundar | zhipeng, yes, nova compute calls into os-vif -- plug(), unplug() API | 14:49 |
| Sundar | I'll try to get a link | 14:49 |
| shaohe_feng | zhipeng, so that means nova will call agent by attach/detach directly? | 14:49 |
| shaohe_feng | is there no race for cyborg API and os-acc? | 14:50 |
| zhipeng | i think for the nova scenario, which means accelerator attachment for the VM | 14:50 |
| zhipeng | the attach should be issued by nova-compute | 14:50 |
| zhipeng | however for the baremetal usecase | 14:50 |
| zhipeng | it should be gone through cyborg-api | 14:51 |
| shaohe_feng | Sundar, os-vif plug API call nuetron agent? | 14:51 |
| zhipeng | i think we should target os-acc for VM usecase for Rocky | 14:51 |
| zhipeng | which means os-acc alls the cyborg-agent directly to call upon the driver | 14:52 |
| Sundar | That is my understanding. We can double check. But, please note that the spec doesn't make implementation commitments yet. We can implement it the same way as os-vif | 14:52 |
| zhipeng | (and the driver invoke the bus protocols) | 14:52 |
| Sundar | zhipeng: Agreed :) | 14:52 |
| shaohe_feng | edleafe, os-vif can call neutron agent directly by RPC by-pass API? | 14:52 |
| Sundar | shaohe: I think you may be referring to scenarios like the one where Cyborg API is called to program a region, which is already in use? | 14:53 |
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| zhipeng | i think the attach/detach does not make assumption on the operation | 14:53 |
| wangzhh | Hi， I'm confused. Could anyone explain. When nova-compute call cyborg by os-acc, It will call by http(API) or just by rpc(message queen)? | 14:53 |
| zhipeng | no matter a region needs to be programmed or not | 14:53 |
| zhipeng | if attach, it presumes the device is ready | 14:54 |
| wangzhh | Or both of them? | 14:54 |
| zhipeng | wangzhh the current thinking is via rpc to call cyborg-agent in order to get to the driver | 14:54 |
| zhipeng | no api involved in this scenario | 14:54 |
| wangzhh | OK. Thx. | 14:55 |
| Sundar | Yes, agreed with zhipeng | 14:55 |
| Sundar | Here are the interfaces exposed by os-vif: https://github.com/openstack/os-vif/blob/master/os_vif/__init__.py | 14:55 |
| zhipeng | it means that this is a VM related operation and we assume the Nova got the necessary previllage | 14:56 |
| Sundar | I will try to locate how nova compute calls it | 14:56 |
| zhipeng | we could focus on the details later, whether the lib itself could be called | 14:56 |
| zhipeng | or something implement the lib interfaces should be called | 14:56 |
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| zhipeng | okey so everyone good on the os-acc spec ? | 14:57 |
| Sundar | Nova compute calls the initialize API of os-vif directly here: https://github.com/openstack/nova/blob/master/nova/cmd/compute.py#L49 | 14:57 |
| shaohe_feng | what does os_vif.initialize do? | 14:59 |
| shaohe_feng | will it set up RPC client? | 14:59 |
| Sundar | It sets up os_vif for further calls, like plug and unplug to attach/detach network ports to instances | 14:59 |
| shaohe_feng | we want to know the plug detail | 15:00 |
| shaohe_feng | how does it call neutron. | 15:00 |
| shaohe_feng | by API or RPC? | 15:00 |
| Sundar | shaohe: It seems to a direct call AFAICS> Here's the implementation: https://github.com/openstack/os-vif/blob/master/os_vif/__init__.py#L24 | 15:00 |
| Sundar | shaohe: Could I ask whether it is important to settle this now before approving the spec? | 15:01 |
| zhipeng | we could discuss this more in detail for implementation | 15:02 |
| Sundar | The spec focuses on 2 things: behavior of accelerators during start/top/etc. and the os-acc interfaces | 15:02 |
| shaohe_feng | Sundar, it should block the spec. | 15:02 |
| Sundar | The implementation is up to us. There will be more comments on the code patch that implements this :) | 15:02 |
| shaohe_feng | for if it can agent, we should be careful. | 15:03 |
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| shaohe_feng | s/for if it can agent/for if it call agent | 15:04 |
| zhipeng | Sundar regarding nrp | 15:04 |
| Sundar | We should be careful in the implementation. But the spec does not say RPC, API or whatever | 15:04 |
| zhipeng | I think from the maillinglist discussion | 15:04 |
| zhipeng | we should still go for it | 15:04 |
| zhipeng | per your sched spec | 15:04 |
| Sundar | Shaohe, if we don;t close on os-acc spec now, what is your proposed plan for Rocky? | 15:05 |
| zhipeng | Sundar shaohe_feng let's moving on from the os-acc specifics | 15:06 |
| shaohe_feng | OK | 15:06 |
| zhipeng | actually let me put down a comment | 15:06 |
| zhipeng | #action os-acc spec https://review.openstack.org/566798 after Li Liu remove -1 is ready to go | 15:06 |
| zhipeng | so Li Liu still has to check :) | 15:07 |
| Sundar | Thanks, zhipeng :) | 15:07 |
| zhipeng | now back on the sched spec | 15:07 |
| zhipeng | nrp | 15:07 |
| zhipeng | I think we should still go for it | 15:07 |
| Sundar | zhipeng, re. nRP, it may still take more time | 15:07 |
| Sundar | We may not deliver anything if we keep waiting for it | 15:07 |
| Sundar | Can we start by applying the traots on compute node RP and moving later when ever nRP is ready? | 15:08 |
| Sundar | *traits | 15:08 |
| zhipeng | given the impression from the Nova team | 15:08 |
| zhipeng | nrp should be a worthy goal for Rocky, if we wait that's gonna be another cycle | 15:08 |
| zhipeng | plus we have Alex here :P | 15:09 |
| Sundar | What will be delivered in Rocky then? | 15:09 |
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| zhipeng | all the nrp based traits and rcs we discussed | 15:10 |
| zhipeng | and placement will be ready i suspect | 15:10 |
| shaohe_feng | Sundar, we have a discuss nRP on Monday's meeting. can you summary it? | 15:11 |
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| zhipeng | Sundar are you still around ? | 15:14 |
| Sundar | shaohe: after Monday's meeting, I started a thread with Nova. Please see some of the responses, like: http://lists.openstack.org/pipermail/openstack-dev/2018-June/131157.html | 15:14 |
| zhipeng | the agent-driver api spec | 15:14 |
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| zhipeng | is this urgent for rocky as well ? | 15:14 |
| Sundar | The virt-drivers need to be updated for nRP, and there are still some concerns around in-place upgrades with nRP | 15:14 |
| Sundar | zhipenf, Just trying to understand :) -- if nRP is not ready in Rocky, what will Cyborg deliver in Rocky? | 15:15 |
| Sundar | *zhipeng | 15:15 |
| zhipeng | Sundar we could make a hack work | 15:16 |
| shaohe_feng | zhipeng, we should make a decision on how we report the resource to placement. | 15:16 |
| zhipeng | shaohe_feng specifically ? | 15:17 |
| zhipeng | Sundar I see the feedbacks in the email thread, and the general feedback is that most of the stuff could be done | 15:18 |
| Sundar | zhipeng: Say the nRP functionality is ready by mid-July. Would we have enough time to get it done after that? We have lots of people waiting to use Cyborg. Cyborg has got popular. ;) | 15:19 |
| shaohe_feng | zhipeng, Must it be ready for resource report in R release? | 15:20 |
| zhipeng | Sundar we have more than capable devs :) | 15:20 |
| zhipeng | shaohe_feng basic functionality should be ready I presume | 15:20 |
| zhipeng | nothing too fancy | 15:20 |
| shaohe_feng | Sundar, yes, cyborg is becoming popular. | 15:21 |
| Sundar | zhipeng: Definitely. :) But it may help to have a backup plan, right? Without that, we cannot get basic VM placement to work, AFAICS. | 15:21 |
| zhipeng | yes we will have time for a backup plan, this could be planned together with Li Liu and Zhuli | 15:22 |
| zhipeng | we shoot for NRP as priority, if Nova could not deliver it, then we could go backup | 15:23 |
| zhipeng | but I don't want to drop NRP to a secondary concern at first | 15:23 |
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| Sundar | So, for development till then, we could invoke placement in some ad hoc way to populate inventory and traits ? | 15:25 |
| zhipeng | i think so | 15:25 |
| Sundar | OK, zhipeng. Your call. :) I had updated the spec to reflect compute node RP as a backup. I cna further clarify that nRP is the preferred way. Would that be enough? | 15:27 |
| zhipeng | that'd be great :) | 15:27 |
| zhipeng | btw all the specs we deemed ready today will be merge no later than the end of the week | 15:28 |
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| Sundar | Sure, thanks. :) Could we say that the spec is ready modulo that clarification? | 15:28 |
| zhipeng | yes | 15:29 |
| shaohe_feng | Sundar, another question about nRP | 15:29 |
| zhipeng | that's actually more related to the implementation | 15:29 |
| shaohe_feng | how we call placement? | 15:29 |
| zhipeng | folks I got to drop, plz continue discussion, I will come back and terminate the meeting :) | 15:29 |
| shaohe_feng | The placement client it ready? | 15:29 |
| shaohe_feng | Sundar, I did not find it. | 15:30 |
| Sundar | shaohe, I also need to drop for another call. Can we pursue in this IRC channel later? | 15:30 |
| shaohe_feng | OK. | 15:30 |
| shaohe_feng | then we can terminate the meeting | 15:30 |
| shaohe_feng | ^ zhipeng | 15:30 |
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| zhipeng | okey then :) | 15:34 |
| zhipeng | thx everyone for the discussion | 15:34 |
| zhipeng | #endmeeting | 15:34 |
| *** openstack changes topic to "spec review day (Meeting topic: openstack-cyborg)" | 15:34 | |
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| openstack | Meeting ended Wed Jun 6 15:34:45 2018 UTC. Information about MeetBot at http://wiki.debian.org/MeetBot . (v 0.1.4) | 15:34 |
| openstack | Minutes: http://eavesdrop.openstack.org/meetings/openstack_cyborg/2018/openstack_cyborg.2018-06-06-14.00.html | 15:34 |
| openstack | Minutes (text): http://eavesdrop.openstack.org/meetings/openstack_cyborg/2018/openstack_cyborg.2018-06-06-14.00.txt | 15:34 |
| openstack | Log: http://eavesdrop.openstack.org/meetings/openstack_cyborg/2018/openstack_cyborg.2018-06-06-14.00.log.html | 15:34 |
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| openstackgerrit | Doug Hellmann proposed openstack/cyborg master: fix tox python3 overrides https://review.openstack.org/572953 | 20:06 |
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| openstackgerrit | Sundar Nadathur proposed openstack/cyborg master: Specification for Cyborg/Nova interaction for scheduling. https://review.openstack.org/554717 | 23:41 |
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