XPU Pyro Preview not working?

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Has anyone else gotten this to work? I'm taking the basic shockwave shelftool and when I render with Karma CPU it works fine. I then try changing the assign material parameter on the pyrolook node to an XPU Pyro Preview shader, and switch the Karma rendering mode from CPU to XPU and it doesn't work, just doesn't render anything. I'm matching all the settings with the original pyro node, the documentation doesn't mention any specific settings or gotchas so not sure what I might be missing, thx.
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For me XPU sees the volume most of the time but only density.

I used an explosion I did before.
I knew it would work in Karma CPU because that's what I used back then to render but XPU only sees the destiny. In some cases it stays completely empty.
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You have to pass in vdb volumes to lop. Houdini volumes will not work with XPU
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Got it that worked, ty
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