GPU delegation to OpenCL backend failing for certain models

[AD-lite24]

We have been using the LiteRT runtime for a while on our qualcomm devices to use the GPU delegation. However with certain models (namely Superpoint, Lightglue, YoloV11) the delegation keeps failing. After setting up more verbose error logs we get the following errors

ERROR: Following operations are not supported by GPU delegate:
CAST: Not supported Cast case.
CAST: Not supported cast case
CEIL: Operation is not supported.
CONCATENATION: OP is supported, but tensor type/shape isn't compatible.
EQUAL: Not supported logical op case
EQUAL: Not supported logical op case.
FLOOR_DIV: OP is supported, but tensor type/shape isn't compatible.
FLOOR_MOD: OP is supported, but tensor type/shape isn't compatible.
GATHER_ND: Operation is not supported.
LOGICAL_AND: Operation is not supported.
LOGICAL_NOT: Operation is not supported.
LOGICAL_OR: Operation is not supported.
RESHAPE: OP is supported, but tensor type/shape isn't compatible.
SCATTER_ND: Operation is not supported.
SELECT: Operation is not supported.
STRIDED_SLICE: OP is supported, but tensor type/shape isn't compatible.
TOPK_V2: Operation is not supported.
TRANSPOSE: Max version supported: 2. Requested version 4.
28 operations will run on the GPU, and the remaining 116 operations will run on the CPU.
ERROR: No selector for floor
ERROR: Falling back to OpenGL
ERROR: TfLiteGpuDelegate Init: OpenGL-based API disabled
INFO: Created 0 GPU delegate kernels.
ERROR: TfLiteGpuDelegate Prepare: delegate is not initialized
ERROR: Node number 144 (TfLiteGpuDelegateV2) failed to prepare.
ERROR: Restored original execution plan after delegate application failure.
GPU delegate error.
INFO: Created TensorFlow Lite XNNPACK delegate for CPU.

The unsupported OP errors are one issue, but there the other issue is the failure to apply the OpenCL backend

28 operations will run on the GPU, and the remaining 116 operations will run on the CPU.
ERROR: No selector for floor
ERROR: Falling back to OpenGL
ERROR: TfLiteGpuDelegate Init: OpenGL-based API disabled
INFO: Created 0 GPU delegate kernels.

For our other models we only use OpenCL backends and they seem to work fine, but for some reason it doesn't work here and there don't seem to be any more verbose errors I can obtain. The only thing that might could be a hint is ERROR: No selector for floor that is still rather cryptic (perhaps the floor opt?).

[pkgoogle]

Hi @AD-lite24, can you show us an example of how you are applying the delegation? The more context, the better for us.