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#openstack-cyborg - 2020-11-26
03:10:09 xinranwang #info xinranwang
03:10:10 swp20 #info swp20
03:10:30 Yumeng #topic Agenda
03:11:18 Yumeng # topic vgpu
03:11:41 Yumeng #topic vgpu
03:13:33 Yumeng swp20: pls continue
03:14:00 Yumeng are you saying the detach failure in hotplug is because of cirros mssing?
03:14:36 swp20 yeah, the cirros vm process crash when detach the gpu device
03:15:06 swp20 the un-hotplug is not real success in fact.
03:15:58 swp20 cirros image is not support and centos is well.
03:18:13 Yumeng so vgpu hotplug is not supported in cirros but supported in centos, right?
03:18:51 swp20 i am not sure.
03:18:58 swp20 i means re-hotplug
03:19:27 Yumeng ok
03:19:43 Yumeng did you find out why un-hotplug is not successful?
03:19:59 swp20 attach, detach and reattach
03:20:19 swp20 i search the vm log
03:21:12 swp20 there is process crash problem.
03:23:01 Yumeng is it a occasional case or it crash every time?
03:23:41 swp20 it's high probability
03:23:51 Yumeng ok
03:24:32 Yumeng Has this crash ever happend in Centos?
03:25:10 swp20 hasn't met yet.
03:25:25 Yumeng ok. got taht.
03:25:46 swp20 cool
03:26:08 Yumeng looks like hotplug is image sensitive.
03:26:32 Yumeng Thanks wenping for the sharing
03:26:33 swp20 maybe the driver is important.
03:27:09 Yumeng do you mean nvidia virtualization driver?
03:27:37 swp20 no, i means the driver in image
03:28:03 swp20 gpu is not support well for cirros
03:28:14 swp20 include vgpu
03:28:39 swp20 you can test for vgpu about detach by 'virsh detach-device'
03:29:30 Yumeng yes, the VFIO mdev driver is very important. nvidia virtualization driver version must be well match the image version
03:29:48 Yumeng ok. will try when I got time
03:30:01 swp20 cool
03:30:13 Yumeng I also have a vGPU issue to discuss with you
03:30:20 Yumeng about the vGPU support
03:30:26 swp20 yep
03:30:58 swp20 i think in the time of bind arq is better
03:31:03 swp20 to create mdev
03:31:42 swp20 attach_handle is too early
03:32:20 Yumeng yes, I also think so.
03:32:20 swp20 and maintain task is heavy
03:33:58 swp20 so let's confirm this.
03:34:07 Yumeng xinranwang what do you think?
03:35:29 Yumeng Sylvain prefer create mdev in generate attach_handle. sean and gibi is fine with either
03:36:14 Yumeng from my perspective, I also prefer creating medv when arq bind
03:37:24 xinranwang if gpu's type is determined, the max number of vfs is also determined, right?
03:37:51 Yumeng yes
03:38:15 Yumeng but if it is changed, we need to delete all the created ones and create new ones
03:38:19 xinranwang if we do not create mdev at attach_handle generation step, how many vfs should we report?
03:38:26 Yumeng even if they were never used.
03:40:11 Yumeng xinranwang: the maximum number
03:40:36 Yumeng in the inventory, we always report the maximum number
03:40:43 xinranwang ok, got it.
03:41:39 xinranwang it seems create mdev during binding is more efficient. we just create it when we use it.
03:42:41 Yumeng yes, that's also how I mentioned in nova spec.
03:42:42 xinranwang does mdev creation spend much time?
03:42:48 Yumeng not much.
03:43:12 xinranwang will it fail in some cases?
03:44:28 Yumeng I tested in my env, but it was not a big number of VMs. create mdev is very fast
03:44:50 Yumeng but not sure what's the results when VM is a large number
03:45:16 xinranwang mdev creation is a serial task, i think.
03:46:04 xinranwang anyway, i think at binding step is more efficient, if there is no obvious gap.
03:46:06 Yumeng creation failure is at very Low frequency.
03:46:30 Yumeng hasn't met yet
03:47:14 Yumeng xinranwang: ok. cool
03:47:24 Yumeng So we agreed on at binding step.
03:47:33 Yumeng I will go back to sync with nova guys
03:47:58 Yumeng ok. nothing else from side.
03:48:18 Yumeng Is ther anything else you guys what to mention?
03:49:41 xinranwang nothing from my side
03:51:23 Yumeng ok~
03:51:32 Yumeng lunch time~~
03:51:41 xinranwang lol
03:51:46 xinranwang bon appetit
03:52:14 Yumeng haha
03:52:27 Yumeng so let's wrap up today's meeting
03:52:41 Yumeng #endmeeting
03:52:44 openstack Meeting ended Thu Nov 26 03:52:41 2020 UTC. Information about MeetBot at http://wiki.debian.org/MeetBot . (v 0.1.4)
03:52:45 openstack Minutes: http://eavesdrop.openstack.org/meetings/openstack_cyborg/2020/openstack_cyborg.2020-11-26-03.09.html
03:52:46 Yumeng bye
03:52:46 openstack Minutes (text): http://eavesdrop.openstack.org/meetings/openstack_cyborg/2020/openstack_cyborg.2020-11-26-03.09.txt
03:52:47 openstack Log: http://eavesdrop.openstack.org/meetings/openstack_cyborg/2020/openstack_cyborg.2020-11-26-03.09.log.html
03:52:50 xinranwang bye
07:27:13 openstackgerrit Xinran WANG proposed openstack/cyborg master: refresh device profile link in API doc https://review.opendev.org/c/openstack/cyborg/+/764281
08:20:08 openstackgerrit Xinran WANG proposed openstack/cyborg master: refresh device profile link in API doc https://review.opendev.org/c/openstack/cyborg/+/764281
09:35:47 openstackgerrit YumengBao proposed openstack/cyborg-specs master: Cyborg NVIDIA GPU Driver support vGPU management https://review.opendev.org/c/openstack/cyborg-specs/+/758925
#openstack-cyborg - 2020-11-27
01:32:48 openstackgerrit Merged openstack/cyborg master: Add packages required for pdf-docs run to bindep.txt https://review.opendev.org/c/openstack/cyborg/+/761288
09:07:50 openstackgerrit Merged openstack/cyborg-specs master: Cyborg NVIDIA GPU Driver support vGPU management https://review.opendev.org/c/openstack/cyborg-specs/+/758925
09:16:44 openstackgerrit Merged openstack/cyborg-specs master: Remove redundant `References` https://review.opendev.org/c/openstack/cyborg-specs/+/761493
09:20:50 openstackgerrit Merged openstack/cyborg-specs master: Remove redundant `References` https://review.opendev.org/c/openstack/cyborg-specs/+/762022
09:27:56 openstackgerrit Merged openstack/cyborg-specs master: Remove redundant `References` https://review.opendev.org/c/openstack/cyborg-specs/+/762023
11:57:51 openstackgerrit YumengBao proposed openstack/cyborg master: support configuring multiple vgpu types in cyborg https://review.opendev.org/c/openstack/cyborg/+/764450
#openstack-cyborg - 2020-11-29
11:07:15 openstackgerrit Merged openstack/cyborg master: Add index page for contributors guide https://review.opendev.org/c/openstack/cyborg/+/759540
11:35:39 openstackgerrit Merged openstack/cyborg master: Add microversion instructions https://review.opendev.org/c/openstack/cyborg/+/743722
11:35:43 openstackgerrit Merged openstack/cyborg master: Remove cyborg-dbsync unsupport argument https://review.opendev.org/c/openstack/cyborg/+/762814
#openstack-cyborg - 2020-11-30
02:08:38 openstackgerrit wangzhiguang proposed openstack/cyborg-tempest-plugin master: add accelerator request list get delete test method https://review.opendev.org/c/openstack/cyborg-tempest-plugin/+/764598
02:53:24 openstackgerrit wangzhiguang proposed openstack/cyborg-tempest-plugin master: add device profile negative testcase https://review.opendev.org/c/openstack/cyborg-tempest-plugin/+/764599

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