SCL | Frontend Framework library
kandi X-RAY | SCL Summary
kandi X-RAY | SCL Summary
(you might need sudo). download all the things. you might need gulp 4.0. running a dev build.
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QUESTION
I was running some tests to compare C to Java and ran into something interesting. Running my exactly identical benchmark code with optimization level 1 (-O1) in a function called by main, rather than in main itself, resulted in roughly double performance. I'm printing out the size of test_t to verify beyond any doubt that the code is being compiled to x64.
I sent the executables to my friend who's running an i7-7700HQ and got similar results. I'm running an i7-6700.
Here's the slower code:
...ANSWER
Answered 2021-Jun-07 at 22:21The slow version:
Note that the sub rax, 1 \ jne
pair goes right across the boundary of the ..80
(which is a 32byte boundary). This is one of the cases mentioned in Intels document regarding this issue namely as this diagram:
So this op/branch pair is affected by the fix for the JCC erratum (which would cause it to not be cached in the µop cache). I'm not sure if that is the reason, there are other things at play too, but it's a thing.
In the fast version, the branch is not "touching" a 32byte boundary, so it is not affected.
There may be other effects that apply. Still due to crossing a 32byte boundary, in the slow case the loop is spread across 2 chunks in the µop cache, even without the fix for JCC erratum that may cause it to run at 2 cycles per iteration if the loop cannot execute from the Loop Stream Detector (which is disabled on some processors by an other fix for an other erratum, SKL150). See eg this answer about loop performance.
To address the various comments saying they cannot reproduce this, yes there are various ways that could happen:
- Whichever effect was responsible for the slowdown, it is likely caused by the exact placement of the op/branch pair across a 32byte boundary, which happened by pure accident. Compiling from source is unlikely to reproduce the same circumstances, unless you use the same compiler with the same setup as was used by the original poster.
- Even using the same binary, regardless of which of the effects is responsible, the weird effect would only happen on particular processors.
QUESTION
Given a test data from this link:
I would like to groupby poi
column and select 2 rows for each group, then find common address
part (the colored part from table above) for each group starting from left, ie., ceng
are common for poi
is 1
, but it has been ignored.
For filter rows which has at least 2 rows for poi
and select 2 rows for each group.
ANSWER
Answered 2021-Jun-04 at 01:10A custom aggregation function solves it. For the example above, I suggest the following:
QUESTION
I have a features DF that looks like
text number text1 0 text2 1 ... ...where the number
column is binary and the text
column contains texts with ~2k characters in each row. The targets DF contains three classes.
ANSWER
Answered 2021-Jun-02 at 07:56The main problem is the way you are returning the numeric values. x.number.values
will return an array of shape (n_samples,)
which the FeatureUnion
object will try to combine with the result of the transformation of the text features later on. In your case, the dimension of the transformed text features is (n_samples, 98)
which cannot be combined with the vector you get for the numeric features.
An easy fix would be to reshape the vector into a 2d array with dimensions (n_samples, 1)
like the following:
QUESTION
I am trying to run this combined model, of text and numeric features, and I am getting the error ValueError: Invalid parameter tfidf for estimator
. Is the problem in the parameters
synthax?
Possibly helpful links:
FeatureUnion usage
FeatureUnion documentation
ANSWER
Answered 2021-Jun-01 at 19:18As stated here, nested parameters must be accessed by the __
(double underscore) syntax. Depending on the depth of the parameter you want to access, this applies recursively. The parameter use_idf
is under:
features
> text_features
> tfidf
> use_idf
So the resulting parameter in your grid needs to be:
QUESTION
I am currently using an SRF-10 sensor connected to an esp32. It's being powered by 5V and I am using a level converter to bring down the voltage to 3.3V to be able to use it on the esp32. Both the SCL and SDA have a 1.8K pull up resistor as recommended on the datasheet.
I have written the following script to try to get a read from the sensor. I am not entirely sure if it is correct but soon as it reaches line 16 I get an error saying [Errno 19] ENODEV. Eveything I could find suggests that the i2c connection isn't working properly but when I run i2c.scan()
it returns the sensor address so I am guessing connections aren´t the problem.
My script is as follows:
ANSWER
Answered 2021-May-26 at 22:27The proper use of i2c.writeto_mem
requires the following order of arguments:
QUESTION
class CreateAcc(QDialog):
def __init__(self):
super(CreateAcc,self).__init__()
loadUi("createacc.ui",self)
self.confirmacc.clicked.connect(self.createaccfunction)
self.password.setEchoMode(QtWidgets.QLineEdit.Password)
self.confirmpass.setEchoMode(QtWidgets.QLineEdit.Password)
self.invalid.setVisible(False)
def createaccfunction(self):
email = self.email.text()
tc = email
now = datetime.now()
d1 = now.strftime("%Y %m %d %H %M")
if self.password.text()==self.confirmpass.text() and len(email)>=11: #exception won't work here!!#
password = self.password.text()
#datatc = {email : }
#datapass = {"password" : password}
db.child("Registered_Users").child(tc).child(d1)
#db.child("Registered_Users").child("HMI_USER").child("HMI").push(datapass)
login = Login()
widget.addWidget(login)
widget.setCurrentIndex(widget.currentIndex() + 1)
else:
self.invalid.setVisible(True)
class Measure(QDialog):
def __init__(self):
super(Measure,self).__init__()
loadUi("measure.ui",self)
widget.setFixedWidth(1022)
widget.setFixedHeight(744)
self.bodytmpBtn.clicked.connect(self.bodyTemp)
def bodyTemp(self):
i2c = io.I2C(board.SCL, board.SDA, frequency=100000)
mlx = adafruit_mlx90614.MLX90614(i2c)
target_temp = "{:.2f}".format(mlx.object_temperature)
datatemp = {CreateAcc.d1 : target_temp}
db.child("Registered_Users").child(CreateAcc.tc).child(CreateAcc.d1).push(datatemp)
...ANSWER
Answered 2021-May-24 at 08:15You should pass the variable that you need to the Measure constructor. Hence, the class definition should be something like this:
QUESTION
I'm trying to write an I2C Slave and test it in isolation.
I have a simulation that should be pulling SDA
low when write_ack
is high (Also highlighted by the red dots). However, you can see that SDA
remains the same.
Part of me thinks it's to do with the way I'm testing with the force
methods and the delays.
Any help appreciated.
I have found the keyword release
which seems to help.
Code below & EDA Playground is here: https://edaplayground.com/x/6snM
...ANSWER
Answered 2021-May-17 at 17:20Instead of using force
, a more conventional approach is to add a tristate buffer to the testbench, just like you have in the design.
For SDA
, create a buffer control signal (drive_sda
) and a testbench data signal (sda_tb
). Use a task
to drive a byte and wait for the ACK.
Since SCL
is not an inout
, there is no need for a pullup, and it can be directly driven by clk
.
QUESTION
I am facing a problem with tagging words in sentences. I can not comprehend why I get as an output only the last sentence in the list. It should be a huge long list with tagged words.
Here is a full code here:
...ANSWER
Answered 2021-May-16 at 15:25Well that's because you re-initialize taggedList
on every iteration. Printing it on the next line will only print out the last iteration of taggedList
.
QUESTION
I have tried several settings such as delaying the download time, the console does not seem to have an error, and the selectors return the correct data from Scrapy Shell
The site uses a different prefix on the domain, could this be the cause? slist.amiami.jp I tried several variations of domains and URLs but all result in the same response of no data returned
Any Idea why it is not collecting any data for the -o CSV file? Thank you if you have any advise
The expected output is to return the JAN code and category text from the product page
...ANSWER
Answered 2021-May-16 at 06:18It seems the products = response.css('div.maincontents')
selector was incorrect and I had to do 2 separate parent child requests for the data
It also turns out you can simply just YEILD the elements in a list
'''
def output(self, response):
QUESTION
I'm writing my first ever I2C program in Verilog and I'm struggling with the TestBench.
I want to test the I2C Slave in isolation, but I'm unable to set different SDA values: SDA is always 1, or X.
Am I going about testing the wrong way? My thoughts are I should be able to on every clock, set the SDA and see what happens.
Playground here: https://edaplayground.com/x/6snM
...ANSWER
Answered 2021-May-15 at 16:52I added $time
to the $display
statement, and this clearly showed that SDA
was changing, but it was changing all at the same time (10):
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