Category Archives: data center

Sinking in too many layers

Posted on September 9, 2011 by admin

Facebook engineers and analysts tap the company’s Hadoop clusters via a SQL-like query language known as Hive. [..] Separate from its Hadoop work, Facebook built Cassandra, a distributed database also based on a piece of Google’s backend. Google uses a … Continue reading →

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Computer architecture, power, and PHP

Posted on September 9, 2011 by admin

The Tile-Gx chips have 64-bit processing on their cores, and include floating point math instructions that allow a floating point operating to be done in five cycles instead of hundreds of cycles when done in software. This is, believe it … Continue reading →

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Virtualization and power use and spreadsheet games (updated)

Posted on July 29, 2010 by admin

Here’s a thought experiment. Suppose each server uses X watts idle and X+Y watts busy. If you have N programs that currently run on N servers that are Z% idle then in the best case you really only need D= … Continue reading →

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