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y-cruncher
What it is
y-cruncher calculates Pi and other mathematical constants to trillions of digits and also serves as a multi-threaded benchmark and stress-testing program for overclockers and hardware enthusiasts. For most constants, it uses separate algorithms for computation and verification. The program supports modern multi-core processors and SIMD instructions including SSE, AVX and AVX512, and its multithreading can operate without significantly increasing memory use. For computations that need more memory than is available, y-cruncher manages swap space and can use multiple drives for faster disk swapping. It can detect and correct minor errors attributed to hardware instability or software bugs. Downloads are available for Windows and Linux, with static and dynamic Linux builds. The static Linux version lacks TBB and NUMA binding; the dynamic version supports all features but is less portable. Listed requirements are Windows 8 or later, 64-bit Linux, and an x86 or x64 processor. The project is on hiatus for major algorithm redesigns and rewrites, though maintenance and some processor optimizations will continue. Non-commercial and academic use is free; commercial-purpose licensing may be available by contacting the developer.
For and against
For
- Computes Pi and other constants to trillions of digits.
- Uses separate computation and verification algorithms for most constants.
- Supports SSE, AVX and AVX512.
- Can use multiple drives for disk swapping.
Against
- Static Linux builds lack TBB and NUMA binding.
- Dynamic Linux builds are less portable.
- Major algorithm redesigns and rewrites are on hiatus.
- Commercial use requires contacting the developer.
The verdict
y-cruncher combines large mathematical computations with benchmarking and stress-testing tools for Windows and Linux. Check the Linux build limitations and licensing terms that apply to your intended use.
Who it suits
y-cruncher suits users who want to compute mathematical constants or benchmark and stress-test hardware. Commercial users should contact the developer about licensing.
Plans and prices
Non-commercial / academic use
Non-commercial use; academic use permitted, including commercial technology reviews · commercial-purpose licensing may be available by contacting the developer
Read 8 Oct 2026 · numberworld.org
On the record
- Benchmarking
- The maker describes it as a multithreaded, scalable Pi benchmark used for benchmarking and stress testing by overclockers and hardware enthusiasts.numberworld.org · read 8 Oct 2026
- Commercial licensing
- Commercial use requires contacting the developer, and the license says commercial-use licenses may be available depending on intended usage.numberworld.org · read 8 Oct 2026
- Developer
- The product page identifies Alexander J. Yee as its author.numberworld.org · read 8 Oct 2026
- Distribution
- The license permits mirroring and distributing the software free of charge for any purpose.numberworld.org · read 8 Oct 2026
- Downloads
- The maker lists Windows and Linux downloads; Linux builds are available in static and dynamic versions.numberworld.org · read 7 Oct 2026
- Error handling
- The maker describes the program as semi-fault-tolerant and says it can detect and correct minor errors caused by hardware instability or software bugs.numberworld.org · read 8 Oct 2026
- Large computations
- It manages swap space for computations that need more memory than is available and can use multiple hard drives for faster disk swapping.numberworld.org · read 8 Oct 2026
- License
- Downloading the listed binaries constitutes acceptance of the license agreement.numberworld.org · read 7 Oct 2026
- Linux limitation
- The static Linux build lacks TBB and NUMA binding; the dynamic build supports all features but is described as less portable.numberworld.org · read 8 Oct 2026
- Multithreading
- Its multithreading can use modern multi-core processors without significantly increasing memory usage.numberworld.org · read 7 Oct 2026
- Performance
- It supports multithreading and SIMD vector instructions including SSE, AVX, and AVX512.numberworld.org · read 8 Oct 2026
- Purpose
- y-cruncher computes Pi and other mathematical constants to trillions of digits.numberworld.org · read 8 Oct 2026
- Requirements
- The maker lists Windows 8 or later, 64-bit Linux, and an x86 or x64 processor as system requirements.numberworld.org · read 7 Oct 2026
- Support and maintenance
- The developer says the project is on hiatus for major algorithm redesigns and rewrites, while maintenance and some processor optimizations will continue.numberworld.org · read 7 Oct 2026
- System requirements
- The listed requirements include Windows 8 or later, 64-bit Linux, and an x86 or x64 processor.numberworld.org · read 8 Oct 2026
- Vectorization
- It supports processor SIMD instruction sets including SSE, AVX, and AVX512.numberworld.org · read 7 Oct 2026
- Verification
- For most constants, the program provides separate algorithms for computation and verification.numberworld.org · read 8 Oct 2026
- Warranty
- The license provides the software as is and disclaims warranties, including implied warranties of merchantability and fitness.numberworld.org · read 8 Oct 2026
