# CUDA error: invalid resource type (cudaErrorInvalidResourceType)

- **ID:** `cuda/cuda-error-invalid-resource-type`
- **Domain:** cuda
- **Category:** type_error
- **Error Code:** `cudaErrorInvalidResourceType (801)`
- **Verification:** ai_generated
- **Fix Rate:** 80%

## Root Cause

An invalid enum value was passed to a CUDA resource management API (e.g., cudaImportExternalMemory or cudaDestroyExternalSemaphore), often due to a mismatch between host and device pointer types or an out-of-date driver.

## Version Compatibility

| Version | Status | Introduced | Deprecated |
|---------|--------|------------|------------|
| CUDA 12.2 | active | — | — |
| CUDA 12.4 | active | — | — |
| NVIDIA Driver 550.54.10 | active | — | — |
| PyTorch 2.3.0 | active | — | — |
| TensorFlow 2.15.0 | active | — | — |

## Workarounds

1. **Update the NVIDIA driver to the latest version (e.g., 550.54.10 or newer) and ensure the CUDA toolkit version matches the driver: `nvidia-smi | grep 'CUDA Version'; sudo apt-get install --only-upgrade nvidia-driver-550`** (85% success)
   ```
   Update the NVIDIA driver to the latest version (e.g., 550.54.10 or newer) and ensure the CUDA toolkit version matches the driver: `nvidia-smi | grep 'CUDA Version'; sudo apt-get install --only-upgrade nvidia-driver-550`
   ```
2. **Verify the resource type enum used in the code matches the CUDA API documentation. For example, when using cudaExternalMemoryHandleDesc, ensure the type field is set to a valid value like cudaExternalMemoryHandleTypeOpaqueFd (1).** (80% success)
   ```
   Verify the resource type enum used in the code matches the CUDA API documentation. For example, when using cudaExternalMemoryHandleDesc, ensure the type field is set to a valid value like cudaExternalMemoryHandleTypeOpaqueFd (1).
   ```
3. **Add a check for driver version compatibility before calling the API: `int driverVersion; cudaDriverGetVersion(&driverVersion); if (driverVersion < 12020) { /* handle older driver */ }`** (75% success)
   ```
   Add a check for driver version compatibility before calling the API: `int driverVersion; cudaDriverGetVersion(&driverVersion); if (driverVersion < 12020) { /* handle older driver */ }`
   ```

## Dead Ends

- **** — The error is not related to compute capability but to the resource type enum values; recompilation does not fix mismatched enums. (90% fail)
- **** — Casting only hides the warning; the underlying invalid value still causes the driver to reject the operation. (95% fail)