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Above 4GB Decoding on Z370 FTW

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himorask
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2019/01/12 10:10:20 (permalink)
I just got a Xeon Phi to do some research computing with and was going to test on my home motherboard, but it looks like the motherboard doesn't support above 4GB decoding for PCIe devices. This is fine but I just wanted to confirm that I'm not missing something, or if there's a way to enable this in software or something.
 
Thanks!
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    bcavnaugh
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    Re: Above 4GB Decoding on Z370 FTW 2019/01/12 11:20:04 (permalink)
    With what GPU and how much Memory is installed on the MB?
    But the X99 or X299 might be a better platform for your Xeon Phi CPU.
    Enable this in What Software?
    post edited by bcavnaugh - 2019/01/12 11:22:45


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    himorask
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    Re: Above 4GB Decoding on Z370 FTW 2019/01/12 12:10:23 (permalink)
    It shouldn't be too relevant to this I don't think but I have 16GB ram installed and a 1080ti
    The xeon phi is a coprocessor board with 8GB RAM, any given x99 or x299 board would also need to have this feature to enable memory mapping of spaces larger than 4GB
    Because it's a chipset feature, I'm wondering if it's exposed in software control somewhere, since the BIOS of z370 FTW doesn't expose the option.
     
    ETA: This isn't to say I disagree, I think it's more likely that an x99 or x299 would expose this option, but I was looking to work with what I have already. MSI consumer boards all expose this feature, so I was curious if there was some way to do so that's less obvious to me on the z370 board I have here now.
    post edited by himorask - 2019/01/12 12:13:30
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