Use Prime95 to test your CPU stress
Prime95 has been a popular choice for CPU stress/torture testing since its introduction, especially for overclockers and system builders. Since the program makes extensive use of CPU floating-point integer instructions, it gives the CPU a stable, verifiable workload to test the stability of the CPU and L1/L2/L3 CPU cache. In addition, it uses all cores of a multi-CPU / multi-core system to ensure a high-load stress test environment.

How it works:

This page explains what you need to do to participate in GIMPS and how it works on your computer. This page is intended for people with Intel compatible computers, although in many cases this is also possible for Unix and Mac users.

In short, you will need the following:

A relatively recent computer. Computers - Although very old computers can still be useful for helping other computers find prime numbers. your computer is on and working more than off - at least most of the time - it's okay to go on vacation, vacations, etc. Time and Patience - Testing for the best time can take weeks, even on the fastest computers, and months on very old computers. . An internet connection is available at least once every two months - often preferred, preferably weekly or daily.

GIMPS requires a modern computer that is up and running most of the time. This program works with the lowest possible priority. You should not see any effect on the performance of your system. This program will use about 32 MB of memory and about 50 MB of disk space. Warning: Running the program continuously consumes about 40 watts of additional power, like a low-power fluorescent lamp - your electric bill only increases slightly.

Most importantly you will. It takes a lot of patience. It takes about a month to run an initial test - see the benchmark page for a more accurate estimate of your computer.

Setup Instructions for New Users:

Join GIMPS usually downloads and runs the software, answers a few questions, and the software does the rest. There are cash prizes for discovering a new Mersenne Prime! If you haven't done so already, create your own USERID. It is optional, but it is necessary to check account details, computer status, performance stats, and assign computers to your user ID. Download the free software for your operating system Create a directory and decompress the downloaded file. Windows 7, Vista, and XP have built-in decompression features. Other Windows users can choose from a variety of decompressors. We are using 7-zip. Linux and FreeBSD users should use the standard tar and gzip decompressors. Start the application! (Linux and FreeBSD users should run the program from the command line with the -m switch, i.e. “./mprime -m”). Enter the optional user ID created in step 1 on the website and name your computer if you wish. We recommend that Windows users select the Start at Bootup or Start at Logon options.

That's all you have to do! The software connects to a central server called PrimeNet to get the tasks done. Apps and PrimeNet usually do the trick, but it's up to you!

You can manage your accounts and computers on your account page. Once you have completed the module, you can track your ranking on the competitive stats pages as the server is updated hourly (check out the top manufacturers in the list on the left for more stats). You can control the progress of any of your computers, and even remotely control the tasks they request using the wizard page of your user ID!

Linux and FreeBSD versions can also be configured in this way to run every time you restart your computer. Seek help from the Mersenne Forum.

Questions and issues:

Please refer to the readme.txt file for possible answers. You can also search for answers or seek help on the GIMPS forums. Otherwise, you should ask your question to one of the two people who wrote the program. Network and server problems should be reported to Scott Kruskey. These issues include server connection errors, mapping or user ID issues, and server statistics page errors. All other issues and questions should be sent to George Waltman, but please refer to the forums first.


See GIMPS Terms and Conditions. However, please send bug reports and suggestions for improvement.


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