tricks.md

Program that can utilise all the available CPU cores:

public class CPUBoundTask implements Runnable {
    @Override
    public void run() {
        long result = 0;
        for (int i = 0; i < Integer.MAX_VALUE; i++) {
            result += i;
        }
        System.out.println(Thread.currentThread().getName() + " finished with result: " + result);
    }
}

public class CPUBoundApplication {
    public static void main(String[] args) {
        int numThreads = Runtime.getRuntime().availableProcessors();
        ExecutorService executorService = Executors.newFixedThreadPool(numThreads);

        for (int i = 0; i < numThreads; i++) {
            executorService.submit(new CPUBoundTask());
        }

        executorService.shutdown();
    }
}

This program creates a fixed thread pool with the number of threads equal to the available processors, and submits a task that performs a CPU-bound calculation. The program then waits for all tasks to finish before exiting. This will allow all available CPU cores to be utilized to their fullest potential.

---

import multiprocessing

def worker():
    """Worker function that does some CPU-bound work."""
    x = 0
    for i in range(100000000):
        x += i

if __name__ == '__main__':
    # Get the number of available CPU cores
    num_cores = multiprocessing.cpu_count()
    print(f"Running with {num_cores} cores")

    # Start one worker per CPU core
    pool = multiprocessing.Pool(processes=num_cores)
    pool.map(worker, range(num_cores))
    pool.close()
    pool.join()

This program creates a pool of worker processes, with one worker for each CPU core available on the machine. Each worker simply performs a loop that does some CPU-bound work. The pool.map() method is used to distribute the work among the workers, and the pool.close() and pool.join() methods are used to ensure that all the work is completed before the program exits.

You can adjust the workload by changing the range of the loop in the worker() function. You can also modify the program to perform other types of work, such as I/O-bound work, by using different worker functions.

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Google Chrome Hacks

• Tab Groups:

If you frequently have many tabs open, the Tab Groups flag can be a lifesaver. Enabling this flag allows you to organize your tabs into groups, which can be collapsed and expanded as needed. To enable this flag, go to "chrome://flags/#tab-groups" and select "Enabled" from the dropdown menu.

Tab groups in chrome can be created by right clicking on the tab and selecting "Add to new group". You can also change the color of the tab group by right clicking on the tab group and selecting "Color". You can also name the tab group by right clicking on the tab group and selecting "Name group". You can also move the tabs between tab groups by dragging and dropping the tabs.

• Tab Hover Cards:

If you often have many tabs open, the Tab Hover Cards flag can make it easier to see what's on each tab. Enabling this flag displays a small preview of each tab when you hover over it with your mouse. To enable this flag, go to "chrome://flags/#tab-hover-cards" and select "Enabled" from the dropdown menu.

• Parallel Downloading:

If you have a fast internet connection, the Parallel Downloading flag can make your downloads much faster. Enabling this flag allows Chrome to download files in parallel, which can significantly improve download speeds. To enable this flag, go to "chrome://flags/#enable-parallel-downloading" and select "Enabled" from the dropdown menu.

• Parallel Uploading:

If you have a fast internet connection, the Parallel Uploading flag can make uploading files much faster. Enabling this flag allows Chrome to upload files in parallel, which can significantly improve upload speeds. To enable this flag, go to "chrome://flags/#enable-parallel-uploading" and select "Enabled" from the dropdown menu.

• Heavy Ad Intervention:

If you find that some websites are using too much of your CPU and battery, the Heavy Ad Intervention flag can help. Enabling this flag will block ads that use too many resources, which can improve performance and battery life. To enable this flag, go to "chrome://flags/#enable-heavy-ad-intervention" and select "Enabled" from the dropdown menu.

• Scrollable Tab Strip:

By default, Chrome's tab strip only shows a limited number of tabs, and you have to click on the arrow buttons to see more. However, the Scrollable Tab Strip flag allows you to scroll through all your tabs with a mouse wheel or trackpad gesture. To enable this flag, go to "chrome://flags/#scrollable-tabstrip" and select "Enabled" from the dropdown menu.

• Tab Scrolling Buttons:

If you often have many tabs open, the Tab Scrolling Buttons flag can make it easier to navigate between them. Enabling this flag adds buttons to the tab strip that allow you to scroll through your tabs. To enable this flag, go to "chrome://flags/#scrollable-tabstrip" and select "Enabled" from the dropdown menu.

• Reader Mode:

If you often find yourself reading articles on the web, the Reader Mode flag can make the experience much more pleasant. Enabling this flag removes ads and other distractions, and presents the article in a clean, easy-to-read format. To enable this flag, go to "chrome://flags/#enable-reader-mode" and select "Enabled" from the dropdown menu.

• Smooth Scrolling:

If you find Chrome's scrolling to be too jarring, the Smooth Scrolling flag can make it more fluid. Enabling this flag applies a smooth animation when you scroll, which can be easier on the eyes. To enable this flag, go to "chrome://flags/#smooth-scrolling" and select "Enabled" from the dropdown menu.

• Experimental QUIC protocol:

QUIC (Quick UDP Internet Connections) is a protocol that can improve website loading times and make connections more secure. Enabling this flag allows Chrome to use the experimental QUIC protocol instead of the traditional TCP protocol. To enable this flag, go to "chrome://flags/#enable-quic" and select "Enabled" from the dropdown menu.

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Windows Hacks

How to reset your Windows 10 password if you forget it:

1. Boot into the Windows 10 recovery environment.
2. Open the command prompt.
3. Type net user to see a list of all the user accounts on the computer.
4. Type net user <username> * to reset the password for the specified user account.
5. Type exit to close the command prompt.
6. Restart the computer and log in with the new password.