From: "Marek Olšák" <maraeo@gmail.com>
To: "amd-gfx mailing list" <amd-gfx@lists.freedesktop.org>,
"Bas Nieuwenhuizen" <bas@basnieuwenhuizen.nl>,
"Michel Dänzer" <michel@daenzer.net>,
"Christian König" <ckoenig.leichtzumerken@gmail.com>
Subject: amdgpu doesn't do implicit sync, requires drivers to do it in IBs
Date: Mon, 25 May 2020 18:05:14 -0400 [thread overview]
Message-ID: <CAAxE2A5Kv9oB7TnoAKSLfuB7unYZzgggSY=BaNyHZq0Fvi+5Qw@mail.gmail.com> (raw)
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Hi Christian,
Bas and Michel wanted to discuss this. The main disadvantage of no implicit
(pipeline) sync within the same queue is that we get lower performance and
lower GPU utilization in some cases.
We actually never really needed the kernel to have implicit sync, because
all user mode drivers contained hacks to work without it.
Marek
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next reply other threads:[~2020-05-25 22:05 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-25 22:05 Marek Olšák [this message]
2020-05-25 22:07 ` amdgpu doesn't do implicit sync, requires drivers to do it in IBs Marek Olšák
2020-05-28 9:11 ` Christian König
2020-05-28 10:06 ` Michel Dänzer
2020-05-28 14:39 ` Christian König
2020-05-28 16:06 ` Marek Olšák
2020-05-28 18:12 ` Christian König
2020-05-28 19:35 ` Marek Olšák
2020-05-29 9:05 ` Christian König
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