From: "Liu, Shaoyun" <Shaoyun.Liu-5C7GfCeVMHo@public.gmane.org>
To: "tstellar-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org"
<tstellar-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
"Felix Kühling"
<felix.kuehling-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
"amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org"
<amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org>
Cc: "Kuehling, Felix" <Felix.Kuehling-5C7GfCeVMHo@public.gmane.org>
Subject: RE: PCIe3 atomics requirement for amdkfd
Date: Wed, 3 Jan 2018 16:23:45 +0000 [thread overview]
Message-ID: <DM5PR12MB1179B2F3C378819556589747F41E0@DM5PR12MB1179.namprd12.prod.outlook.com> (raw)
In-Reply-To: <a5d6072b-6fea-f161-3773-50f58766ed45-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
I think currently atomic Ops are only used in AQL package which is only available for ROCm , graphics workload will not use AQL package.
Regards
Shaoyun.liu
-----Original Message-----
From: amd-gfx [mailto:amd-gfx-bounces@lists.freedesktop.org] On Behalf Of Tom Stellard
Sent: Wednesday, January 03, 2018 9:57 AM
To: Felix Kühling; amd-gfx@lists.freedesktop.org
Cc: Kuehling, Felix
Subject: Re: PCIe3 atomics requirement for amdkfd
On 12/23/2017 07:40 AM, Felix Kühling wrote:
> As I understand it, it would require changes in the ROCr Runtime and
> in the firmware (MEC microcode). It also changes the programming
> model, so it may affect certain applications or higher level language
> runtimes that rely on atomic operations.
>
How does the MEC microcode know that it is running a ROCm workload as opposed to a graphics workload that doesn't require PCIe3 atomics. Is there a specific configuration bit that is set to indicate the ROCm programming model is needed?
-Tom
> Regards,
> Felix
>
>
> Am 19.12.2017 um 16:04 schrieb Tom Stellard:
>> Hi,
>>
>> How hard of a requirement is PCIe3 atomics for dGPUs with the amdkfd
>> kernel driver? Is it possible to make modifications to the
>> runtime/kernel driver to drop this requirement?
>>
>> -Tom
>> _______________________________________________
>> amd-gfx mailing list
>> amd-gfx@lists.freedesktop.org
>> https://lists.freedesktop.org/mailman/listinfo/amd-gfx
>
>
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next prev parent reply other threads:[~2018-01-03 16:23 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-12-19 15:04 PCIe3 atomics requirement for amdkfd Tom Stellard
[not found] ` <c2c34443-9ba1-661b-476d-b657a7ddfe85-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2017-12-23 15:40 ` Felix Kühling
[not found] ` <3f7e6fed-8668-b469-8813-e6677cb980ca-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2017-12-23 16:26 ` Alexander Kjeldaas
[not found] ` <CAHVSqQe1Tj+PnCR1h+HiHC=fXC81sUG4MXC7jWwmY+TomuU=9w-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-12-24 10:07 ` Felix Kühling
2018-01-03 14:56 ` Tom Stellard
[not found] ` <a5d6072b-6fea-f161-3773-50f58766ed45-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2018-01-03 16:23 ` Liu, Shaoyun [this message]
[not found] ` <DM5PR12MB1179B2F3C378819556589747F41E0-2J9CzHegvk8p/eksZXEfgQdYzm3356FpvxpqHgZTriW3zl9H0oFU5g@public.gmane.org>
2018-01-03 16:40 ` Bridgman, John
2017-12-25 14:55 ` Luke A. Guest
[not found] ` <5a4b1672-4595-7e7f-0d76-9c721b61e98e-z/KZkw/0wg5BDgjK7y7TUQ@public.gmane.org>
2017-12-25 16:44 ` Bridgman, John
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