Cannot type empty list @cuda.jit

[Bobby Garza]

On Thursday, June 15, 2017 at 1:28:31 PM UTC-5, Bobby Garza wrote:

I'm having a lot of trouble just getting my code to work with cuda. I know that Cuda works with my machine because I found some code on github that uses @cuda.jit and it runs fine. The error I keep receiving cannot type empty list, but I made sure all of my numpy arrays are populated and that they are numpy arrays and not python lists. Any help would be amazing!

P.S. This is just a code snippet, so it won't run with a copy paste

def main():

    hash_for_y_axis()

    hash_nums()

    

    #fi = []

    #trying to encrypt Issac Asimov's short story, "The Last Question"

    #The code below puts each string as an input value in a list

    with open("theLastQuestion.txt") as f:

        fi = ([word for line in f for word in line.split()])

    short_story = np.asarray(fi)

    for x in range(0, len(fi)):    

        map_key(short_story[x]) #the call to map_key assigns ascii values to each character in the short story, preps data

    encrypted_message_array = np.empty_like(iterate_list) #iterate is filled in map_key

    np_array = np.asarray(iterate_list)

    #print(short_story) #contains the story in a numpy array

    #print(np_array) # contains the story in ascii

    

    stream = cuda.stream()

    with stream.auto_synchronize():

        gpu_array = cuda.to_device(np_array, stream)

        run_encryption[32,32](gpu_array, encrypted_message_array) #i'm not sure about my griddim and blockdim values...

        gpu_array.copy_to_host(encrypted_message_array, stream)

    print(encrypted_message_array)

#function takes an ascii value and an output array and returns the number of times it took to get in the range of x/256    

@cuda.jit("int32(int32, int32[:])", device = True)

def run_encryption(y_coord_list, output_array):

    r = 3.8    

    b = rand.uniform(0,1) #random initial condition

    b_list.append(b)

    j = 0

    while(j < len(iterate_list)):

        for i in range(1,max_iterate): 

            result = r * b * (1 - b)

            b = r * b * (1 - b)

            if check_range(result, y_coord_list[j]):

                output_array[j] = i

                print(i)

                j = j + 1

    return output_array