VIoLET | VIoLET : A Large-scale Virtual Environment for Internet
kandi X-RAY | VIoLET Summary
kandi X-RAY | VIoLET Summary
ABSTRACT: IoT deployments have been growing manifold, encompassing sensors, networks, edge, fog and cloud resources. Despite the intense interest from researchers and practitioners, most do not have access to large scale IoT testbeds for validation. Simulation environments that allow analytical modeling are a poor substitute for evaluating software platforms or application workloads in realistic computing environments. Here, we propose VIoLET, a virtual environment for defining and launching large scale IoT deployments within cloud VMs. It offers a declarative model to specify container-based compute resources that match the performance of the native edge, fog and cloud devices. They can be inter-connected by complex topologies on which private/public, bandwidth and latency rules are enforced. Users can launch their custom platforms and applications as well. We validate VIoLET for deployments with > 400 devices and > 1500 cores, and show that the virtual IoT environment closely matches the expected compute and network performance at modest costs.
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 VIoLET
VIoLET Key Features
VIoLET Examples and Code Snippets
Community Discussions
Trending Discussions on VIoLET
QUESTION
I have a data frame where some of the hours in Time GMT are missing.
Normally, the hours should be shown in a sequence from 00:00 to 23:00, but sometimes an hour is missed.
Where an hour is missing in the sequence, I would like to insert a new row.
The new row will be a copy of the previous row, but with the following columns changed as follows:
Time GMT: will contain the next hour of the previous row. i.e, if previous == 5:00, new == 6:00Sample Measurement: will contain the average between the previous value and the next value in Sample Measurement column.MDL: will contain the average between the previous value and the next value in column MDL
What have I tried
...ANSWER
Answered 2021-Jun-09 at 21:36You could use tidyverse:
QUESTION
When I render the following table as HTML, I get expected row grouping:
...ANSWER
Answered 2021-Jun-09 at 16:34Default output of the expss doesn't support pdf/latex. But there is an excellent package huxtable which works with pdf:
So you need to use as_huxtable:
QUESTION
In Framer Motion, I'm trying to get two colors to animate smoothly. The colors are red 'hsl(0, 100, 50)' and blue 'hsl(240, 100, 50)'. Unfortunately, the animation is going through the color wheel, making pit stops at orange, yellow, green, cyan, etc. How do I get it to switch "direction" and transition smoothly from red, then violet, then blue?
...ANSWER
Answered 2021-Jun-07 at 00:53Although this is surprisingly simple to do, it is not at all initially obvious to do this.
This is wrong: animate={{ backgroundColor: ['hsl(0, 100, 50)', 'hsl(240, 100, 50)] }},
while this is right: animate={{ backgroundColor: ['hsl(0, 100, 50)', 'hsl(-120, 100, 50)] }}.
(Just in case anybody is confused about where this code goes, "animate" is a prop within the motion.div element. For more examples, please looks at these examples from the docs: https://www.framer.com/api/motion/examples/)
QUESTION
I would like to use Python to generate different colors of noise, just like Wikipedia mentions : https://en.wikipedia.org/wiki/Colors_of_noise.
For example, White, Pink, Brownian, Blue and Violet noise. And would like to have similar spectrums just like the website.
It would be a great help if I could just adjust a few parameters to get it done. Any links or tips would be very appreciated! Thanks a lot.
...ANSWER
Answered 2021-Apr-18 at 18:51Let's use numpy to compute the noise and matplotlib to plot the results
QUESTION
I have made a plot displaying multiple facets of my data. The colour bar created by scale_colour_gradientn is confusing because it shows percentage breakdowns. Could I get rid of these percentage breakdowns and add my own. I have tried using values and breaks parameters but with no luck. I think maybe ggplot is confused because most of the values are either very small or close to 1. I have added a toy dataset, code and image output below.
dput(df)
...ANSWER
Answered 2021-Jun-03 at 14:45Because your Adj.P.value is numeric, you have to break it into categories first.
QUESTION
Relatively new to Dash, and this is a problem that has been vexing me for months now. I am making a multi-page app that shows some basic data trends using cards, and graphs embedded within cardbody. 30% of the time, the app works well without any errors and the other 70% it throws either one of the following:
- ImportError: cannot import name 'ValidatorCache' from partially initialized module 'plotly.validator_cache' (most likely due to a circular import) OR
- ImportError: cannot import name 'Layout' from partially initialized module 'plotly.graph_objects' (most likely due to a circular import)
Both these appear quite randomly and I usually refresh the app to make them go away. But obviously I am doing something wrong. I have a set of dropdowns that trigger callbacks on graphs. I have been wracking my head about this. Any help/leads would be appreciated. The only pattern I see in the errors is they seem to emerge when the plotly express graphs are being called in the callbacks.
What am I doing wrong? I have searched all over online for help but nothing yet.
Sharing with some relevant snippets of code (this may be too long and many parts not important to the question, but to give you a general idea of what I have been working towards)
...ANSWER
Answered 2021-Feb-13 at 02:18Well, it appears I may have stumbled on to an answer. I was using the pretty much the same inputs for multiple callbacks and that could have been causing some interference with the sequencing of inputs. Once I integrated the code into one callback with multiple outputs, the problem seems to have disappeared.
QUESTION
I have a dataframe which has two different sample types (A and B). I would like to differentiate these by using different shape options. Here is a dataframe and my current attempt at performing this.
output of dput(head(df))
...ANSWER
Answered 2021-Jun-02 at 14:15You can add shape = TimeKD to the aes of the geom_point call like this...
QUESTION
This question is based on this stack overflow question. According to the answer given,
...ANSWER
Answered 2021-Jun-02 at 08:54You don't show any useable code, but if I were to guess, I'd say you did not define the non-standard colour names with capital letters. Either define them or use standard names from one of the color packages, e.g. from xcolor
QUESTION
On the website, there is a long blue tail. For pride month, I wanted to change this tail to rainbow. The original CSS code is the following:
...ANSWER
Answered 2021-Jun-01 at 18:38Try:
QUESTION
I'm very new to Leaflet and coding, and I'm basically just trying out to see if I can build a random map with different features. I've come across an issue, which I need help with.
I can't add a polyline to an array (see my attempt below), and secondly, I can't make the map fitBounds.
...ANSWER
Answered 2021-May-30 at 17:37polyline is outside of the loop so i will only take the last value of locations2.length which is 2
Better use let inside for loops so you won't end up with local for loop variables being exposed outside the for loop block
Moreover if I understood correctly you want to add a polyline between the markers of each locations array, locations and locations2
So you need to have a data format of array of latlngs like so:
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install VIoLET
Install Docker on all the VMs (including the admin VM) using docker_install.sh script. Start docker on admin VM with the following command. Start consul on the admin VM with the following command. Consul is a key-store database to creat docker overlay networks. Start docker on container VMs using following command. Make sure you put the right IP addresses as mentioned in the command. Pull the required docker image for VIoLET on all the container-host VMs. For the support of storage-opt in docker. Docker doesnot allows storage-opt size changes to limit disk capacity, If you see noquota in the xfs mount options for the / partition on container VM. Make sure you follow these steps to change it to pquota on each container VMs. Refer this link https://help.directadmin.com/item.php?id=557. NOTE: ec2 instances do not come with a disk storage by default. Usually, the ephermal storage drivers aren't sufficent to support the container deployment. User must attach and mount the EBS volume to the container-host VMs and move /var/lib/docker to the disk and do a softlink to /var/lib/docker. For example, let us assume the disk path to be /disk. Follow these commands after stopping the docker. NOTE: When using a different disk volume for docker storage and if the user wants to limit the disk space that is available to the container using the --storage-opt configuration, mount the volume with pquota options or if automounting , give the pquota option in /etc/fstab file. For more information, refer to issue #68.
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
