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kandi X-RAY | AI_Project Summary
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QUESTION
I want to understand what is happening under the hood when I run the following script named t1.py with python3 t1.py. Specifically, I have the following questions:
- What kind of code is submitted to the spark worker node? Is it the python code or a translated equivalent Java code submitted to the spark worker node?
- Is the add operation in the reduce treated as UDF and thus run in a python subprocess on the worker node?
- If the add operation run in a python subprocess on the worker node, does the worker JVM communicates with the python subprocess for each number in a partition being added? If this is the case, it means a lot of overhead.
ANSWER
Answered 2020-May-15 at 11:48In PySpark, Python and JVM codes live in separate OS processes. PySpark uses Py4J, which is a framework that facilitates interoperation between the two languages, to exchange data between the Python and the JVM processes.
When you launch a PySpark job, it starts as a Python process, which then spawns a JVM instance and runs some PySpark specific code in it. It then instantiates a Spark session in that JVM, which becomes the driver program that Spark sees. That driver program connects to the Spark master or spawns an in-proc one, depending on how the session is configured.
When you create RDDs or Dataframes, those are stored in the memory of the Spark cluster just as RDDs and Dataframes created by Scala or Java applications. Transformations and actions on them work just as they do in JVM, with one notable difference: anything, which involves passing the data through Python code, runs outside the JVM. So, if you create a Dataframe, and do something like:
QUESTION
I just installed my new environment based on tf.__version__ = 1.14
.
Here is how I configure my tensorboard:
...ANSWER
Answered 2019-Jul-02 at 11:33Finally solved.
It looks like it is a Windows specific bug in Tensorflow. Defining the log directory as following is solving the problem..
QUESTION
I am new to pytorch and had a problem with channels in AlexNet. I am using it for a ‘gta san andreas self driving car’ project, I collected the dataset from a black and white image that has one channel and trying to train AlexNet using the script:
...ANSWER
Answered 2019-Jan-02 at 06:24Your error is not related to using gray-scale images instead of RGB. Your error is about the spatial dimensions of the input: while "forwarding" an input image through the net, its size (in feature space) became zero - this is the error you see. You can use this nice guide to see what happens to the output size of each layer (conv/pooling) as a function of kernel size, stride and padding.
Alexnet expects its input images to be 224 by 224 pixels - make sure your inputs are of the same size.
Other things you overlooked:
You are using Alexnet architecture, but you are initializing it to random weights instead of using pretrained weights (trained on imagenet). To get a trained copy of alexnet you'll need to instantiate the net like this
QUESTION
So I have the infamous ModuleNotFoundError, and for a couple of hours I can't find the solution. I know that my project works in Pycharm but I wanted to set it up in Visual Studio Code.
the error
...ANSWER
Answered 2018-Nov-07 at 14:55if you want to import Agent in Main.py just use
QUESTION
import pyttsx
import random
import os
import serial
import webbrowser
while True:
def portport():
ser = serial.Serial('COM3',9600)
raw_data = ser.read(7)
msg = str(raw_data[3:6])
print msg
ser.close()
engine = pyttsx.init()
portport()
if(msg == 'mof'):
engine.say('Are you sure?')
engine.runAndWait()
portport()
if(msg == 'yes'):
engine.say('Chrome has now closed')
os.system("TASKKILL /F /IM chrome.exe")
engine.runAndWait()
elif(msg == 'noo'):
engine = pyttsx.init()
engine.say('Are you kidding me?')
engine.runAndWait()
if(msg == 'hi_'):
greeting()
if(msg == 'bye'):
leaving()
if(msg == 'who'):
engine = pyttsx.init()
engine.say('Hi there')
engine.runAndWait()
if(msg == 'lik'):
engine = pyttsx.init()
engine.say('Ofcourse I do!')
engine.runAndWait()
...ANSWER
Answered 2017-May-15 at 12:34msg
is only defined within the portport
function. If you want to use it outside, you need to return it from there, and assign it to a local variable.
Note, you should not have your function definition within the while loop.
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