devito | DSL and compiler framework for automated finite-differences and stencil computation | GPU library
kandi X-RAY | devito Summary
kandi X-RAY | devito Summary
Devito provides a functional language to implement sophisticated operators that can be made up of multiple stencil computations, boundary conditions, sparse operations (e.g., interpolation), and much more. A typical use case is explicit finite difference methods for approximating partial differential equations. For example, a 2D diffusion operator may be implemented with Devito as follows. An Operator generates low-level code from an ordered collection of Eq (the example above being for a single equation). This code may also be compiled and executed. There is virtually no limit to the complexity of an Operator -- the Devito compiler will automatically analyze the input, detect and apply optimizations (including single- and multi-node parallelism), and eventually generate code with suitable loops and expressions.
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Top functions reviewed by kandi - BETA
- A basic example of the model .
- Convert glb index to local index .
- This method is called after initialization of a TimeSeriesSparseTimeFunction
- Collect aliasing expressions .
- Generate the map for a given index .
- Return a dict containing the command - line arguments .
- Get information about the GPU .
- Perform autotuning .
- Generate the mapper for each dimension .
- Generate a DataFrame with the roofline data .
devito Key Features
devito Examples and Code Snippets
Community Discussions
Trending Discussions on devito
QUESTION
I have a list called 'data' that generally has lists with 3 fields but can sometimes have 4:
...ANSWER
Answered 2020-Aug-05 at 20:01This should solve your problem. First it creates a dictionary from your list elements in a try/ except loop so that if there is no height value isntead of throwing an error it puts np.nan instead. Finally it creates the pandas dataframe from dictionary.
QUESTION
Suppose I have the following tables where id in each are primary keys and actors in the second is a foreign key of the first.
...ANSWER
Answered 2020-May-07 at 05:53It is working fine for me, check it out here. You are not using the correct single quote '
in your query.
QUESTION
I am in early stages of creating a game in which people bet on horses. I need to access the 'HorseList' in the 'BetOnARace' function. This was my attempt but there is an error message near the end for the word 'Main' in the class 'Program' It says that it 'has the wrong signature to be an entry point'.
...ANSWER
Answered 2020-Mar-10 at 13:33The error is due to this line:
QUESTION
I am currently trying to learn machine learning techniques and wanted to recreate a simple image recognition algorithm with tensorflow. Therefore I made two Python-files: One for training and one for prediction.
Tested on Ubuntu 18.04 Used Python Version: 3.7 Used Numpy Version: 1.18.1 Used Tensorflow Version: 1.14 and 2.1.0 (outputs below are from Version 1.14)
My images are from http://www.cs.columbia.edu/CAVE/databases/pubfig/download/#dev The set consists of about 3000 images of cropped faces from 60 people.
train_model.py:
...ANSWER
Answered 2020-Jan-26 at 01:04Hey I believe you are getting strange predictions because your data distribution has 60 classes of people while your model is compiled with a loss function that is set to binary crossentropy.
Binary crossentropy is used to determine a max of 2 classes. What you need to do is change the loss function to categorical crossentropy.
QUESTION
I'm facing an issue with my program. If you could please provide a solution or refer me to the right source it would be great.
I'm going to explain my problem with an example.
Lets say I want to get a post from my database and the result looks like this:
...ANSWER
Answered 2019-Jul-26 at 13:47Sadly I found the following:
Short answer: No.
With Knex, you can retrieve data the same as with SQL, which is record based, not object based
However, after a bit of digging I found a package that can achieve something similar to Laravel's eager loading. It is called Objection.js and it allows me to keep my Knex.js migrations
QUESTION
I have a dataframe (will call it 'df') with a decent amount of variables (numeric and characters, there are some NAs in there too). Some of the columns hold the grade of a specific school subject, some other columns are not related at all. Each row represents a dude.
I want to create a new one (will call it 'preferedSubject') with values based on a threshold (let's say 0.5) imposed in another column ('Happiness'); where, if the value of this variable is lower than the threshold, the value of 'preferedSubject' for that row will be a string (let's say... '2Cool4School') and, if higher, the value will become the name of the school subject with the highest score from that row. That is, the name of the column with the highest numeric value (while excluding some of the other columns, remember that some of them are not school subjects)
This of course isn't my data; just decided to use it as a basic and (hopefully clear) example of what's going on, for some reason I always find a way to put it in terms of school subjects and students.
The first part of my problem should be easily handled with the ifelse function I believe; that way I can assign a value to 'preferedSubject' depending on whether 'Happyness' is lower than 0.5 or not. The part that's causing me trouble is the second one, I cannot find a way to retrieve the name of the column (school subject) with the highest score while excluding some other columns (non school subject) first.
Assuming this is my dataframe:
...ANSWER
Answered 2019-Apr-22 at 04:34We could use ifelse
and max.col
by replacing NA
s with 0 and then get index of maximum value in each row.
QUESTION
I have a problem with retrieving information about movie when I send
GET
request to omdbapi.com.
Here's the code that handles POST
request to my database:
ANSWER
Answered 2018-Aug-22 at 07:35Everything has to be moved inside xhr.onreadystatechange
because if not, then by the time I create a Movie
object, the answer from omdbapi.com still didn't arrive.
QUESTION
I have a column in my data frame (df) as follows:
...ANSWER
Answered 2017-Apr-16 at 21:21The default tokenizer splits text into individual words. You need to provide a custom function
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