MPM | Simulating on GPU using Material Point Method and rendering
kandi X-RAY | MPM Summary
kandi X-RAY | MPM Summary
The material point method (MPM) is a numerical technique used to simulate the behavior of solids, liquids, gases, and any other continuum material. In the MPM, a continuum body is described by a number of small Lagrangian elements referred to as 'material points'. These material points are surrounded by a background mesh/grid that is used only to calculate gradient terms such as the deformation gradient. For more information, please go to Material point method - Wikipedia.
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QUESTION
I am using Xampp for my project where I have PHP files. I have another laravel project which I want to open when a user clicks on a button in PHP file. So, I want laravel project to work in Xampp so that I can complete the functionality of clicking button in "library.php" opening "showForm.blade.php" and on clicking button in "showForm.blade.php" sends request to "web.php"
"showForm.blade.php" is like this:
...ANSWER
Answered 2021-Jun-07 at 05:25Ok so after all the things I finally got it to working
No need to change the folder to laravel inside root project
No need to change the DocumentRoot
Just Had to change in blade.php from
QUESTION
I am trying to make apache2 use a default site when a user access my server by IP address, instead of inputing the site's domain, just to tell the user he cannot access the ip directly.
What is happening is that it keeps redirecting to the domain's site, overwriting the IP address in the browser, instead of showing the default site.
Note the domain's site is redirected to https, this is expected. The default site is not using ssl at all, and preferably should not use ssl.
My sites config are as folow (without logging, error documents nor ssl pathes directives): 000-default.conf
...ANSWER
Answered 2021-May-19 at 01:42You should avoid which amounts to which is really quite unusual. It is also a bad idea to omit ServerName from any virtualhost, because it will be plucked from the systems hostname and cause confusion.
Apache picks the best matching IP:PORT combination first, then looks at ServerName/ServerAlias from the set of virtualhosts with that best match.
This is why your *:80 virtualhost is selected -- it's a more specific match.
QUESTION
I have a pair of Ubuntu dedicated servers...
Server1:
...ANSWER
Answered 2021-May-17 at 15:03The problem was with the module security2.
With the module enabled (120-160MB per process) ...
QUESTION
I keep getting 403 forbidden access error when trying to access any project within htdocs folder. I even downloaded a vanilla CodeIgniter 3 project and got the same result. I'm using apache 2.4.
Above are my conf files.
httpd.conf:
...ANSWER
Answered 2021-Apr-21 at 20:07If it is of anyone's use, I solved it by changing the configuration of htaccess file, located in each app's folder.
The CogeIgniter vanilla project that I downloaded came with this particular htaccess file:
QUESTION
I will have an event with 3k users on an app (php base).
I launch several instances in the cloud and install LAMP on it.[to make load test and choose on for the event]
On Ubuntu 18
I enable mpm_event and php7.4-fpm, (which seems to be the better configuration for high traffic with apache and php app).
I use this post which explain how tune your conf. Like this :
Here apache2 mpm event conf :
...ANSWER
Answered 2021-Feb-15 at 18:23No tool will give you that kind of metric because the best configuration depends greatly on your php scripts. If you have 4 cores and each request consumes 100% of one core for 1 second, the server will handle 4 request per second in the best case regardless of your mpm and php configuration. The type of hardware you have is also important. Some CPUs perform multiple times better than others.
Since you are using php_fpm, the apache mpm configuration will have little effect on performance. You just need to make sure the server doesn't crash with too many requests and have more apache threads than php processes. Note that the RAM is not the only thing that can make a server unreachable. Trying to execute more process than the CPU can handle will increase the load and the number of context switches, decrease the CPU cache efficiency and result in even lower performance.
The ideal number of php processes depends on how your scripts use CPU and other resources. If each script uses 50% of the time with I/O operations for example, 2 processes per core may be ideal. Assuming that those I/O operations can be done in parallel without blocking each other.
You'll also need to take into account the amount of resources used by other processes such as the DB. SQL databases can easily use more resources than the php scripts themselves.
Spare Servers and Spare Threads are the number of processes/threads that can be idle waiting for work. Creating threads takes time, so it's better to have them ready when a request arrives. The downside is that those threads will consume resources such as RAM even when idle, so you'll want to keep just enough of them alive. Both apache and php_fpm will handle this automatically. The number of idle threads will be reduced and increased as needed, but remain between the minimum and maximum values set in the configuration. Note that not all apache threads will serve php files as some requests may be fetching static files, therefore you should always have more apache threads than php processes.
Start Server and Start Threads represents just the number of processes/threads created during the startup. This have almost no effect on performance since the number of threads will be immediately increased or reduced to fit the values of Spare Threads.
MaxConnectionsPerChild and max_requests are just the maximum amount of requests executed during the process/thread life. Unless you have memory leaks, you won't need to tune those values.
QUESTION
I use Laragon to run my sites on Windows and create a virstual host for each site and all the virtual hosts are working properly now. But recently I created a new virtual host but the index.php file is downloaded instead of running. Not all the solutions on the internet worked for me, because the rest of my virtual hosts work properly.
my site config
...ANSWER
Answered 2021-Jan-31 at 10:20You should not set the Content-Type to application/x-httpd-php.
Instead, remove that header.
And use this:
QUESTION
I have a DigitalOcean droplet running Ubuntu.
On it, I host three sites using Apache. I am trying to add a fourth, "newsite.com", swapping from another host. This fourth site is live on another environment with SSL enabled.
The existing three sites run fine. They have SSL enabled using LetsEncrypt and I use virtual hosts to set up multiple domains with the same IP. However, for the fourth one, the new site, if I try to view the site (by editing my Win10 hosts file to point at the server IP) I see one of the other three sites, "oldsite1.com", which is the highest in the list sorted alphabetically. I understand Apache works its way down the list of enabled sites to select one. The new site does not have SSL enabled as I cannot run LetsEncrypt until the DNS has been changed.
The .conf file for the new site looks like this:
...ANSWER
Answered 2020-Dec-07 at 21:08You are forcing ssl. The moment you load http://newsite.com you are being redirected to https://newsite.com.
You only have a vhost for newsite.com on port 80 and not on port 443.
Since there is no vhost for the requested domain on port 443 you will be served the default site.
You will get your site as expected if you comment out this part:
QUESTION
I am going nuts.
This works, when the python module is in the same folder:
...ANSWER
Answered 2020-Nov-22 at 17:06python looks for files in a script’s current directory only.
This possible path to look for file is done using sys.path.insert(index, 'path/to/file') method.
So by doing:
QUESTION
My issue is I am not sure how to type the code to increment trainADistance by trainAMPM and decrease trainBDistance by trainBMPM in the do loop while having each text appended to the list. Each minute is supposed to be appended individually with text += "Minute " + i + " Train A Position: "+ parseFloat(trainADistance).toFixed(2) + " miles" + "Train B Position: " + parseFloat(trainBDistance).toFixed(2);. An example is listed below. Any help would be appreciated.
What the function is supposed to do?
The function I have been attempting to create is supposed to allow the user to input three variables trainAMPH, trainBMPH and distanceApart. When the inputs are submitted, the function function calculateTrains() is supposed to calculate trainAMPH, trainBMPH into miles per minute trainAMPM and trainBMPM. There is a do-while loop in place to increment the minutesi , increment trainADistance by trainAMPM and decrease trainBDistance by trainBMPM. trainBDistance is supposed to contain the same value as distanceApart. The loop continues while(trainADistance < trainBDistance) and is supposed to append text into a list until the loop is broken. An example is listed below.
This is an example of what is supposed to be appended to to the list with inputs 70 for train A, 60 for train B and 260 for distance
...ANSWER
Answered 2020-Nov-14 at 03:20You may wanna change you script to as follows:
QUESTION
I have found several similar questions:
- APACHE, PHP Server return randomly empty response
- https://serverfault.com/questions/66662/apache-gives-empty-reply
- and others
However these does not seem to help to find the cause. I can replicate the behaviour when reloading a specific page ~20 times.
- Running current apache2 (= 2.4.38-3+deb10u4). I tried to disable opcache, remove
MaxRequestsPerChildwith no effect. - Apache log does not show any error. The request is not even logged.
- The
USE_ZEND_ALLOC=0seem to have no effect and the problem persists. - I tried to install
mod_forensicwhich shows that the request came in. No error or finished request is then logged. - The container is running in Kubernetes and I cannot replicate the issue locally running directly with Docker machine, that is why I think this might be caused by some memory setting. However I couldn't find what might be causing this as there is no single error message.
Can you think of any reason why this might be happening?
Edit1:
I tried to set log level to trace:
https://gist.github.com/knyttl/861e8a0fe5651408df37cd5c3874946b
The request is handled and then you can see:
...ANSWER
Answered 2020-Oct-28 at 22:18Why don't you use Jorge's answers ?
Finally solved by adding to /etc/apache2/envvars:
export USE_ZEND_ALLOC=0
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