Re: [PATCH 2/2] drm/amdgpu: introduce a new parameter to configure how many KCQ we want(v5)

2020-10-15 Thread Marek Olšák
Monk or perhaps Felix, Do you by any chance know why the CS ioctl returns -EINVAL for all compute submissions if num_kcq <= 4 and what could cause that? If not, is there any way to disable mid-IB preemption for compute? Thanks, Marek On Fri, Jul 31, 2020 at 9:53 AM Felix Kuehling wrote: > Am

Re: [PATCH 2/2] drm/amdgpu: introduce a new parameter to configure how many KCQ we want(v5)

2020-07-31 Thread Felix Kuehling
Am 2020-07-31 um 3:51 a.m. schrieb Monk Liu: > what: > the MQD's save and restore of KCQ (kernel compute queue) > cost lots of clocks during world switch which impacts a lot > to multi-VF performance > > how: > introduce a paramter to control the number of KCQ to avoid > performance drop if there

[PATCH 2/2] drm/amdgpu: introduce a new parameter to configure how many KCQ we want(v5)

2020-07-31 Thread Monk Liu
what: the MQD's save and restore of KCQ (kernel compute queue) cost lots of clocks during world switch which impacts a lot to multi-VF performance how: introduce a paramter to control the number of KCQ to avoid performance drop if there is no kernel compute queue needed notes: this paramter only