Description
Linpack Benchmark
The LINPACK Benchmarks are a measure of a system's floating point computing power. They measure how fast a computer solves a dense N by N system of linear equations Ax = b, which is a common task in engineering. The solution is obtained by Gaussian elimination with partial pivoting, with 2/3·N3 + 2·N2 floating point operations. The result is reported in millions of floating point operations per second (MFLOP/s, sometimes simply called FLOPS).
Results.
Mflop/s:
Millions of floating point operations per second. A floating point operation here is a floating point addition or a floating point multiplication with 64 bit operands. For this problem there are 2/3 n^3 + n^2 floating point operations.
Time:
The time in seconds to solve the problem, Ax=b.
Norm Res:
A check is made to show that the computed solution is correct. The test is based on || Ax - b || / ( || A || || x || eps) where eps is described below. The Norm Res should be about O(1) in size. If this quantity is much larger than 1, the solution is probably incorrect.
Precision:
The relative machine precision usually the smallest positive number such that fl( 1.0 - eps ) < 1.0, where fl denotes the computed value and eps is the relative machine precision.
What's New in Version 1.1
- adapted for iPad
- multithread mode (multicore CPU support)
- using high precision timer
- built with LLVM compiler
Customer Reviews
Wrongly detects phone
I have an iPhone 4 but it detected it as a 3.
Broken benchmark
32 GFLOPS on a 4096x. Fix the math.
Wrongly detects phone(4 as 3)
IPhone 4 detect as 3
- Free
- Category: Utilities
- Updated: Mar 26, 2012
- Version: 1.1
- Size: 0.1 MB
- Language: English
- Seller: Alexey Solovyov
- © 2010 Alexey Solovyov
Requirements: Compatible with iPhone, iPod touch, and iPad.Requires iOS 4.3 or later.
