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The State Of Heterogeneous Memory Management At The End Of 2018

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  • The State Of Heterogeneous Memory Management At The End Of 2018

    Phoronix: The State Of Heterogeneous Memory Management At The End Of 2018

    Heterogeneous Memory Management is the effort going on for more than four years that was finally merged to the mainline Linux kernel last year but is still working on adding additional features and improvements. HMM is what allows for allowing the mirroring of process address spaces, system memory to be transparently used by any device process, and other functionality for GPU computing as well as other device/driver purposes...

    http://www.phoronix.com/scan.php?pag...Memory-EOY2018

  • #2
    I wonder if this can be used to easily (and securely) implement zero-copy for video playback, graphics rendering, compositing etc. on devices that don't have dedicated memory (e.g integrated Intel and AMD GPUs, maybe some mobile devices as well). That would really boost performance.

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    • #3
      RDMA and GPUs? That would have some funky applications- have your network card write directly into your GPU memory...

      What kind of compute/AI clusters could be built using that? Interesting times, I wonder if this takes off.

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      • #4
        In order to get this adopted wider and faster work has to be done to force OEM's to stop crippling or disabling IOMMU in their BIOS's without ANY way to undo it or fix it.

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        • #5
          Originally posted by Jumbotron View Post
          In order to get this adopted wider and faster work has to be done to force OEM's to stop crippling or disabling IOMMU in their BIOS's without ANY way to undo it or fix it.
          +1, one way would be to create a list of OEMs that are doing it to advise people to not buy their products. You don't really read about this in reviews, so you don't know until you've bought the laptop or motherboard. By that time it's too late.

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          • #6
            And results of HSA Foundation are....??

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