Converting between devices

to_device(device, x)

Move x to the given device.

x is typically a DataLayouts.DataLayout, Spaces.AbstractSpace, Fields.Field, or Fields.FieldVector, but can be anything that Adapt.adapt moves; this moves the backing arrays between CPUs and GPUs in either direction. Moving to a ClimaComms.CPUMultiThreaded device is not supported.

Returns

A version of x with its backing arrays on device, as a freshly built wrapper (so out === x does not hold). A move between CPU and GPU allocates new arrays; when x already lives on device, out may share x's arrays rather than copy them.

to_cpu(x)

Move the backing data of x to the CPU.

x is typically a DataLayouts.DataLayout, Spaces.AbstractSpace, Fields.Field, or Fields.FieldVector, as for to_device. Equivalent to to_device(ClimaComms.CPUSingleThreaded(), x).

Returns

A version of x with its backing data on the CPU, as a freshly built wrapper (so out === x does not hold). When x already lives on the CPU, out may share x's arrays rather than copy them.

DeviceSideDevice()

Device marking data defined on the device side of an accelerator.

The most common example is data defined on a GPU. DeviceSideDevice() identifies operations that run within the accelerator.

DeviceSideContext()

Context associated with data defined on the device side of an accelerator.

The most common example is data defined on a GPU. DeviceSideContext() identifies operations that run within the accelerator.