Google: Computer memory flakier than expected | Deep Tech - CNET News
Wondering why your computer just crashed again? Its memory might be to blame, according to real-world Google research that finds error rates higher than what earlier work showed.
With hundreds of thousands of computers in its data centers, Google can collect an abundance of real-world data about how those machines actually work. That's exactly what the company did for a research paper that found error rates are surprisingly high.
"We found the incidence of memory errors and the range of error rates across different DIMMs (dual in-line memory modules) to be much higher than previously reported," according the paper jointly written by Bianca Schroeder, a professor at the University of Toronto, and Google's Eduardo Pinheiro and Wolf-Dietrich Weber. "Memory errors are not rare events."
The error rate is 3 orders of magnitude higher than previously thought. Google uses ECC (error correcting) memory, too. Other findings: higher temperature doesn't mean higher error rates, most errors are "hard" errors rather than cosmic ray errors, and newer denser RAM chips have lower error rates than previous generation chips. Also, errors increase with chip age.









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