## LINPACK

The new Earth Simulator system, which began operation in March 2009, achieved sustained performance of 122.4 TFLOPS and computing efficiency (*2) of 93.38% on the LINPACK Benchmark (*1).

*1. LINPACK Benchmark

The LINPACK Benchmark is a measure of a computer's performance and is used as a standard benchmark to rank computer systems in the TOP500 project.

LINPACK is a program for performing numerical linear algebra on computers.

*2. Computing efficiency

Computing efficiency is the ratio of sustained performance to a peak computing performance. Here, it is the ratio of 122.4TFLOPS to 131.072TFLOPS.