message: add warning if requested device id not available
diff: @@ -157,7 +157,17 @@ int AliHLTTPCCAGPUTrackerOpenCL::InitGPU_Runtime(int sliceCount, int forceDevice
  return(1);
  }
  - if (forceDeviceID > -1 && forceDeviceID < (signed) count) bestDevice = forceDeviceID;
  + if (forceDeviceID > -1)
  + {
  + if (forceDeviceID < (signed) count)
  + {
  + bestDevice = forceDeviceID;
  + }
  + else
  + {
  + HLTWarning("Requested device ID %d non existend, falling back to default device id %d", forceDeviceID, bestDevice);
  + }
  + }
  ocl->device = ocl->devices[bestDevice];
  clGetDeviceInfo(ocl->device, CL_DEVICE_NAME, 64, device_name, NULL);
  