Hyper-V is killing my Epyc Rome system!

Discussion in 'Windows Server, Hyper-V Virtualization' started by Jeff Robertson, Jan 9, 2020.

  1. Jeff Robertson

    Jeff Robertson Active Member

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    This is a fun one. I am attempting to run 2019 Hyper-v on a Supermicro H11 board with a 7402p CPU and am having no luck. After installing the hyper-v role the machine starts to boot loop. It looks like this is a fairly common issue as MS released a patch for the same behavior but I haven't been able to find a solution so far. Any ideas?
     
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  2. mbosma

    mbosma Member

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    Is AMD-Vi enabled?
    I have had some issues installing hyper-v with Intels VT-d enabled which resulted in a boot loop.
    The solution was to disabled VT-d in bios, maybe disabling AMD-Vi helps too.
     
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  3. Jeff Robertson

    Jeff Robertson Active Member

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    Well this one has been fixed. I had an ISO from mid 19. I downloaded a "newer" version of the ISO from Microsoft and it worked. No idea what changed but something did.
     
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  4. weust

    weust Member

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    Almost sounds like you didn't run Windows Updates to get it to build 1909 (forgot is that applies to 2016 too).
     
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  5. Patrick

    Patrick Administrator
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    Fun factoid. In August 2019 when Rome was released the Windows scheduler could not handle the 2x 128 thread CPUs. We needed a patched scheduler for that in the early days.
     
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  6. weust

    weust Member

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    I can't handle anything above 64 (iirc) cores properly, even in 206/2019, without thrashing you event logs with a certain message.
    Some 32bit old thing iirc. Damn annoying when you administer Hyper-V clusters with nodes that have 72 logical cores of which Hyper-V (at least 2012 does) only uses 64. So silly.
     
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  7. i386

    i386 Well-Known Member

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    Did you encounter similar problems with other os (linux, bsd,esxi)?
     
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