Skip to content

Consuming more time to pass object from .net to python  #658

Description

@48naveen

Environment

  • Pythonnet version: master
  • Python version: 3.5
  • Operating System: Windows 7

Details

  • I am calling python function from my c# code . Initially I import python module using Py.Import function . After importing , will pass a List data type of size 299x299x3 to python function as argument . This passing of argument taking 1.5 seconds where as a block of python code takes only 90 msec .

Here is c# code

using(Py.GIL())
{
dynamic Python_predict = Py.Import("Prediction");
Python_predict.__init__(modelpath);


List<float> imagelist=GetNormalizedFloatBGRImage(image).Data.Cast<float>().ToList();
DateTime t1 = System.DateTime.Now;
Predicted_Type=Python_predict.Findtype(imagelist);
DateTime t2 = System.DateTime.Now;
Console.WriteLine("Predict timing from c# {0} seconds", (t2.Second + ((float)t2.Millisecond / 1000)) - (t1.Second + ((float)t1.Millisecond / 1000)));

}

Here is python code

def __init__(model_path):
        kr.model = kr.load_model(model_path) #Model is loaded only once
def Findtype(ImageData):
        t1=time.time()
        N_array = np.array(ImageData,dtype=np.float64)#creates Numpy array from .net List<float> array
        N_array_reshaped=np.reshape(N_array,(299,299,3))

        #convert BGR to RGB
        temp_array[:,:,0] = N_array_reshaped[:,:,2]#bgR -> Rgb 
        temp_array[:,:,2] = N_array_reshaped[:,:,0]#Bgr -> rgB
        temp_array[:,:,1] = N_array_reshaped[:,:,1]#bGr -> rGb
        img_list[0]=temp_array
        
        #prediction = kr.model.predict(img_list, batch_size=1, verbose=0) # Predictions can be made throughout the lifecycle of MakePrediction class's instance
        #predicted_class = np.argmax(prediction, axis=1)
        t2=time.time()
        print('time on python ',t2-t1)
        return predicted_class[0] + 1

So c# code send image array of size 2992993 of float time to python , by which it gets converted into numpy array and makes the prediction on gpu .
if i run the standalone python code , it takes 90msec but if i call from .net 1.5 sec for passing an argument .

Kindly help me to reduce the timing since it is for real time application .

here is a attached screenshots
untitled

Activity

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Metadata

Metadata

Assignees

No one assigned

    Type

    No type

    Projects

    No projects

      Milestone

      No milestone

      Relationships

      None yet

      Development

      No branches or pull requests

      Issue actions