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From: Jerin Jacob <jerinjacobk@gmail.com>
To: Thomas Monjalon <thomas@monjalon.net>
Cc: dpdk-dev <dev@dpdk.org>, Elena Agostini <eagostini@nvidia.com>,
	 Ferruh Yigit <ferruh.yigit@intel.com>
Subject: Re: [dpdk-dev] [PATCH] gpudev: introduce memory API
Date: Fri, 4 Jun 2021 20:35:25 +0530	[thread overview]
Message-ID: <CALBAE1NoSzNCP-uTRHxSc0yr=SvfWbFuAtNvinYaMKPHa9_a_Q@mail.gmail.com> (raw)
In-Reply-To: <10019605.gdN4zKLbKd@thomas>

On Fri, Jun 4, 2021 at 6:25 PM Thomas Monjalon <thomas@monjalon.net> wrote:
>
> 03/06/2021 13:38, Jerin Jacob:
> > On Thu, Jun 3, 2021 at 4:00 PM Thomas Monjalon <thomas@monjalon.net> wrote:
> > > 03/06/2021 12:04, Jerin Jacob:
> > > > On Thu, Jun 3, 2021 at 3:06 PM Thomas Monjalon <thomas@monjalon.net> wrote:
> > > > > 03/06/2021 11:20, Jerin Jacob:
> > > > > > The device needs have a queue kind of structure
> > > > > > and it is mapping to core to have a notion of configure. queue_setup,
> > > > > > start and stop etc
> > > > >
> > > > > Why is it a requirement to call it a device API?
> > > >
> > > > Then we need to define what needs to call as device library vs library and how?
> > > > Why mempool is not called a  device library vs library?
> > >
> > > My view is simple:
> > > if it has drivers, it is a device API, except bus and mempool libs.
> >
> > rte_secuity has drivers but it is not called a device library.
>
> rte_security is a monster beast :)
> Yes it has rte_security_ops implemented in net and crypto drivers,
> but it is an API extension only, there is no driver dedicated to security.
>
> > > About mempool, it started as a standard lib and got extended for HW support.
> >
> > Yes. We did not change to device library as it was fundamentally
> > different than another DPDK deices
> > when we added the device support.
> >
> > > > and why all
> > > > other device library has a common structure like queues and
> > > > it binding core etc. I tried to explain above the similar attributes
> > > > for dpdk device libraries[1] which I think, it a requirement so
> > > > that the end user will have familiarity with device libraries rather
> > > > than each one has separate General guidelines and principles.
> > > >
> > > > I think, it is more TB discussion topic and decides on this because I
> > > > don't see in technical issue in calling it a library.
> > >
> > > The naming is just a choice.
> >
> > Not sure.
> >
> > > Yesterday morning it was called lib/gpu/
> > > and in the evening it was renamed lib/gpudev/
> > > so no technical issue :)
> > >
> > > But the design of the API with queues or other paradigm
> > > is something I would like to discuss here.
> >
> > Yeah, That is important. IMO, That defines what needs to be a device library.
> >
> > > Note: there was no intent to publish GPU processing control
> > > in DPDK 21.08. We want to focus on GPU memory in 21.08,
> > > but I understand it is a key decision in the big picture.
> >
> > if the scope is only memory allocation, IMO, it is better to make a library.
>
> No it is only the first step.
>
> > > What would be your need and would you design such API?
> >
> > For me, there is no need for gpu library(as of now). May GPU consumers
> > can define what they need to control using the library.
>
> We need to integrate GPU processing workload in the DPDK workflow
> as a generic API.
> There could be 2 modes:
>         - queue of tasks
>         - tasks in an infinite loop
> In both modes, we could get completion notifications
> with an interrupt/callback or by polling a shared memory.


OK. If we have enqeue/dequeue kind operation and with queue model then it
makes sense to have a device model. It was not there in your initial
patch, but if we are adding
in the future then it OK.



>
>
>

  reply	other threads:[~2021-06-04 15:05 UTC|newest]

Thread overview: 128+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-02 20:35 Thomas Monjalon
2021-06-02 20:46 ` Stephen Hemminger
2021-06-02 20:48   ` Thomas Monjalon
2021-06-03  7:06 ` Andrew Rybchenko
2021-06-03  7:26   ` Thomas Monjalon
2021-06-03  7:49     ` Andrew Rybchenko
2021-06-03  8:26       ` Thomas Monjalon
2021-06-03  8:57         ` Andrew Rybchenko
2021-06-03  7:18 ` David Marchand
2021-06-03  7:30   ` Thomas Monjalon
2021-06-03  7:47 ` Jerin Jacob
2021-06-03  8:28   ` Thomas Monjalon
2021-06-03  8:41     ` Jerin Jacob
2021-06-03  8:43       ` Thomas Monjalon
2021-06-03  8:47         ` Jerin Jacob
2021-06-03  8:53           ` Thomas Monjalon
2021-06-03  9:20             ` Jerin Jacob
2021-06-03  9:36               ` Thomas Monjalon
2021-06-03 10:04                 ` Jerin Jacob
2021-06-03 10:30                   ` Thomas Monjalon
2021-06-03 11:38                     ` Jerin Jacob
2021-06-04 12:55                       ` Thomas Monjalon
2021-06-04 15:05                         ` Jerin Jacob [this message]
2021-06-03  9:33   ` Ferruh Yigit
2021-06-04 10:28     ` Thomas Monjalon
2021-06-04 11:09       ` Jerin Jacob
2021-06-04 12:46         ` Thomas Monjalon
2021-06-04 13:05           ` Andrew Rybchenko
2021-06-04 13:18             ` Thomas Monjalon
2021-06-04 13:59               ` Andrew Rybchenko
2021-06-04 14:09                 ` Thomas Monjalon
2021-06-04 15:20                   ` Jerin Jacob
2021-06-04 15:51                     ` Thomas Monjalon
2021-06-04 18:20                       ` Wang, Haiyue
2021-06-05  5:09                         ` Jerin Jacob
2021-06-06  1:13                           ` Honnappa Nagarahalli
2021-06-06  5:28                             ` Jerin Jacob
2021-06-07 10:29                               ` Thomas Monjalon
2021-06-07  7:20                             ` Wang, Haiyue
2021-06-07 10:43                               ` Thomas Monjalon
2021-06-07 13:54                                 ` Jerin Jacob
2021-06-07 16:47                                   ` Thomas Monjalon
2021-06-08  4:10                                     ` Jerin Jacob
2021-06-08  6:34                                       ` Thomas Monjalon
2021-06-08  7:09                                         ` Jerin Jacob
2021-06-08  7:32                                           ` Thomas Monjalon
2021-06-15 18:24                                         ` Ferruh Yigit
2021-06-15 18:54                                           ` Thomas Monjalon
2021-06-07 23:31                                   ` Honnappa Nagarahalli
2021-06-04  5:51 ` Wang, Haiyue
2021-06-04  8:15   ` Thomas Monjalon
2021-06-04 11:07 ` Wang, Haiyue
2021-06-04 12:43   ` Thomas Monjalon
2021-06-04 13:25     ` Wang, Haiyue
2021-06-04 14:06       ` Thomas Monjalon
2021-06-04 18:04         ` Wang, Haiyue
2021-06-05  7:49           ` Thomas Monjalon
2021-06-05 11:09             ` Wang, Haiyue
2021-06-06  1:10 ` Honnappa Nagarahalli
2021-06-07 10:50   ` Thomas Monjalon
2021-07-30 13:55 ` [dpdk-dev] [RFC PATCH v2 0/7] heterogeneous computing library Thomas Monjalon
2021-07-30 13:55   ` [dpdk-dev] [RFC PATCH v2 1/7] hcdev: introduce heterogeneous computing device library Thomas Monjalon
2021-07-30 13:55   ` [dpdk-dev] [RFC PATCH v2 2/7] hcdev: add event notification Thomas Monjalon
2021-07-30 13:55   ` [dpdk-dev] [RFC PATCH v2 3/7] hcdev: add child device representing a device context Thomas Monjalon
2021-07-30 13:55   ` [dpdk-dev] [RFC PATCH v2 4/7] hcdev: support multi-process Thomas Monjalon
2021-07-30 13:55   ` [dpdk-dev] [RFC PATCH v2 5/7] hcdev: add memory API Thomas Monjalon
2021-07-30 13:55   ` [dpdk-dev] [RFC PATCH v2 6/7] hcdev: add communication flag Thomas Monjalon
2021-07-30 13:55   ` [dpdk-dev] [RFC PATCH v2 7/7] hcdev: add communication list Thomas Monjalon
2021-07-31  7:06   ` [dpdk-dev] [RFC PATCH v2 0/7] heterogeneous computing library Jerin Jacob
2021-07-31  8:21     ` Thomas Monjalon
2021-07-31 13:42       ` Jerin Jacob
2021-08-27  9:44         ` Thomas Monjalon
2021-08-27 12:19           ` Jerin Jacob
2021-08-29  5:32             ` Wang, Haiyue
2021-09-01 15:35               ` Elena Agostini
2021-09-02 13:12                 ` Jerin Jacob
2021-09-06 16:11                   ` Elena Agostini
2021-09-06 17:15                     ` Wang, Haiyue
2021-09-06 17:22                       ` Elena Agostini
2021-09-07  0:55                         ` Wang, Haiyue
2021-10-09  1:53 ` [dpdk-dev] [PATCH v3 0/9] GPU library eagostini
2021-10-09  1:53   ` [dpdk-dev] [PATCH v3 1/9] gpudev: introduce GPU device class library eagostini
2021-10-09  1:53   ` [dpdk-dev] [PATCH v3 2/9] gpudev: add event notification eagostini
2021-10-09  1:53   ` [dpdk-dev] [PATCH v3 3/9] gpudev: add child device representing a device context eagostini
2021-10-09  1:53   ` [dpdk-dev] [PATCH v3 4/9] gpudev: support multi-process eagostini
2021-10-09  1:53   ` [dpdk-dev] [PATCH v3 5/9] gpudev: add memory API eagostini
2021-10-08 20:18     ` Thomas Monjalon
2021-10-29 19:38     ` Mattias Rönnblom
2021-11-08 15:16       ` Elena Agostini
2021-10-09  1:53   ` [dpdk-dev] [PATCH v3 6/9] gpudev: add memory barrier eagostini
2021-10-08 20:16     ` Thomas Monjalon
2021-10-09  1:53   ` [dpdk-dev] [PATCH v3 7/9] gpudev: add communication flag eagostini
2021-10-09  1:53   ` [dpdk-dev] [PATCH v3 8/9] gpudev: add communication list eagostini
2021-10-09  1:53   ` [dpdk-dev] [PATCH v3 9/9] doc: add CUDA example in GPU guide eagostini
2021-10-10 10:16   ` [dpdk-dev] [PATCH v3 0/9] GPU library Jerin Jacob
2021-10-11  8:18     ` Thomas Monjalon
2021-10-11  8:43       ` Jerin Jacob
2021-10-11  9:12         ` Thomas Monjalon
2021-10-11  9:29           ` Jerin Jacob
2021-10-11 10:27             ` Thomas Monjalon
2021-10-11 11:41               ` Jerin Jacob
2021-10-11 12:44                 ` Thomas Monjalon
2021-10-11 13:30                   ` Jerin Jacob
2021-10-19 10:00                     ` Elena Agostini
2021-10-19 18:47                       ` Jerin Jacob
2021-10-19 19:11                         ` Thomas Monjalon
2021-10-19 19:56                           ` [dpdk-dev] [EXT] " Jerin Jacob Kollanukkaran
2021-11-03 19:15 ` [dpdk-dev] [PATCH v4 " eagostini
2021-11-03 19:15   ` [dpdk-dev] [PATCH v4 1/9] gpudev: introduce GPU device class library eagostini
2021-11-03 19:15   ` [dpdk-dev] [PATCH v4 2/9] gpudev: add event notification eagostini
2021-11-03 19:15   ` [dpdk-dev] [PATCH v4 3/9] gpudev: add child device representing a device context eagostini
2021-11-03 19:15   ` [dpdk-dev] [PATCH v4 4/9] gpudev: support multi-process eagostini
2021-11-03 19:15   ` [dpdk-dev] [PATCH v4 5/9] gpudev: add memory API eagostini
2021-11-03 19:15   ` [dpdk-dev] [PATCH v4 6/9] gpudev: add memory barrier eagostini
2021-11-03 19:15   ` [dpdk-dev] [PATCH v4 7/9] gpudev: add communication flag eagostini
2021-11-03 19:15   ` [dpdk-dev] [PATCH v4 8/9] gpudev: add communication list eagostini
2021-11-03 19:15   ` [dpdk-dev] [PATCH v4 9/9] doc: add CUDA example in GPU guide eagostini
2021-11-08 18:57 ` [dpdk-dev] [PATCH v5 0/9] GPU library eagostini
2021-11-08 16:25   ` Thomas Monjalon
2021-11-08 18:57   ` [dpdk-dev] [PATCH v5 1/9] gpudev: introduce GPU device class library eagostini
2021-11-08 18:57   ` [dpdk-dev] [PATCH v5 2/9] gpudev: add event notification eagostini
2021-11-08 18:57   ` [dpdk-dev] [PATCH v5 3/9] gpudev: add child device representing a device context eagostini
2021-11-08 18:58   ` [dpdk-dev] [PATCH v5 4/9] gpudev: support multi-process eagostini
2021-11-08 18:58   ` [dpdk-dev] [PATCH v5 5/9] gpudev: add memory API eagostini
2021-11-08 18:58   ` [dpdk-dev] [PATCH v5 6/9] gpudev: add memory barrier eagostini
2021-11-08 18:58   ` [dpdk-dev] [PATCH v5 7/9] gpudev: add communication flag eagostini
2021-11-08 18:58   ` [dpdk-dev] [PATCH v5 8/9] gpudev: add communication list eagostini
2021-11-08 18:58   ` [dpdk-dev] [PATCH v5 9/9] doc: add CUDA example in GPU guide eagostini

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