add cudaDeviceCount flag to the request requirements

Author: ndonyapour

cwltool/process.py

@@ -1002,6 +1002,9 @@ def evalResources(
                 request[a + "Min"] = mn
                 request[a + "Max"] = cast(Union[int, float], mx)
 
+        if cudaReq:
+            request["cudaDeviceCount"] = request["cudaDeviceCountMin"]
+
         request_evaluated = cast(Dict[str, Union[int, float]], request)
         if runtimeContext.select_resources is not None:
             # Call select resources hook