_fastvideo_input_device is stamped at load time with the loader's target
device, which is "cpu" when text_encoder_cpu_offload is on. encode_text then
moves such an encoder to the compute device for the forward, after which the
marker is stale. Honouring it fed cpu token ids to cuda weights:
RuntimeError: Expected all tensors to be on the same device, but got index
is on cpu, different from other tensors on cuda:0
Seen on FLUX.2 Klein, whose Qwen3 text encoder takes the HF-passthrough path.
Once the encoder has been moved, its param device is authoritative; the marker
only speaks when nothing moved and the module has no parameters of its own.
Raghav
70bd4bb756