As the programming models for GPU-based high-performance computing
applications are evolving, HMM is helping us integrate the GPU memory
management more closely with the kernel's virtual memory management. As
a result we can provide a shared virtual address space with
demand-paging and page-based migrations of anonymous pages to/from
device memory. A patch series by AMD [1, 2] to add support for
cache-coherent, CPU-accessible device memory has brought up some fairly
fundamental questions about HMM and its interaction with virtual memory
management, page cache and file systems. We'd like to use the chance of
getting together for a BoF [3] at LPC to raise awareness for HMM outside
the GPU driver code, identify gaps in the architectural documentation
and clarify our priorities for future development.
Thank you, Daniel, for suggesting the BoF and getting it scheduled. It's
set for Friday, 10am Pacific, 1pm Eastern, 5pm UTC.
I am registered at LPC. Daniel got a speaker's pass. We're still trying
to work something out for Alex.
I hope to see many of you on Friday.
Best regards,
Felix
[1] https://patchwork.freedesktop.org/series/94611/
[2] https://patchwork.freedesktop.org/series/90706/
[3] https://linuxplumbersconf.org/event/11/contributions/1123/
--
F e l i x K u e h l i n g
PMTS Software Development Engineer | Linux Compute Kernel
1 Commerce Valley Dr. East, Markham, ON L3T 7X6 Canada
(O) +1(289)695-1597
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