doRedis | R/foreach Redis backend for parallel computing | Architecture library
kandi X-RAY | doRedis Summary
kandi X-RAY | doRedis Summary
Steve Weston's foreach package is a remarkable parametric evaluation device for the R language. Similarly to lapply-like functions, foreach maps and parameter values expressions to data and aggregates results. Even better, foreach lets you do this in parallel across multiple CPU cores and computers. And even better yet, foreach abstracts the parallel computing details away into modular back-end code. Code written using foreach works sequentially in the absence of a parallel back-end, and works uniformly across a variety of back ends. Think of foreach as the lingua Franca of parallel computing for R. Redis is a powerful, fast networked database with many innovative features, among them a blocking stack-like data structure (Redis "lists"). This feature makes Redis useful as a lightweight backend for parallel computing. The doRedis package relies on the redux package for communication with a Redis server to define a lightweight parallel backend for foreach using Redis that is elastic and platform-independent.
Support
Quality
Security
License
Reuse
Top functions reviewed by kandi - BETA
Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of doRedis
doRedis Key Features
doRedis Examples and Code Snippets
Community Discussions
Trending Discussions on doRedis
QUESTION
I need to multiply two big matrices A
and B
as follow:
ANSWER
Answered 2018-Sep-12 at 18:25Installing Microsoft R Open, I go from 3 sec to 0.1 sec!
QUESTION
Problem: I need to control the order of execution in which tasks are processed in parallel by a foreach loop. Unfortunately, this is not supported by foreach.
Solution in mind: Using doRedis to use the database to hold all tasks, that are executed in the foreach loop. To control the order I want to overwrite getTask by setGetTask to get the tasks based on pre-specified order. Though I could not find to much documentation on how to do this.
Additional Information:
There is a small paragraph on setGetTask with an example in the redis documentation.
...
ANSWER
Answered 2017-Jan-22 at 15:33I could solve the problem and now can control the order of task execution.
Additional information:
1. There seems to be a typo in the documentation, that renders the getTask example not working. By considering the form of the default_getTask function from the file task.R in the package, it should look probably something like:
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install doRedis
Support
Reuse Trending Solutions
Find, review, and download reusable Libraries, Code Snippets, Cloud APIs from over 650 million Knowledge Items
Find more librariesStay Updated
Subscribe to our newsletter for trending solutions and developer bootcamps
Share this Page