Does cuGraph have UVM support?
Yes, through RMM (rapids memory manager) we support use of managed memory for both single-GPU and multi-GPU workflows. Obviously, performance with managed memory will not be as high as performance with device memory. In addition, cuDF has a spilling feature that can be very helpful when working with RMM pools, which are pre-allocated chunks of memory. And finally, for multi-GPU workflows, dask has its own spilling features that can be configured. There is also additional research going on for further expanding use of host memory in GPU workflows.
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