TL;DR
This paper reviews the development and performance improvements of PC clusters used for lattice QCD computations, analyzing cost-effectiveness and predicting future price-to-performance trends based on technological forecasts.
Contribution
It provides a comprehensive analysis of the evolution of PC clusters for lattice QCD and offers predictions for future performance and costs.
Findings
Performance parameters have improved over time.
Price to performance ratio has become more favorable.
Future trends suggest continued cost-effectiveness for lattice QCD computing.
Abstract
In the last several years, tightly coupled PC clusters have become widely applied, cost effective resources for lattice gauge computations. This paper discusses the practice of building such clusters, in particular balanced design requirements. I review and quantify the improvements over time of key performance parameters and overall price to performance ratio. Applying these trends and technology forecasts given by computer equipment manufacturers, I predict the range of price to performance for lattice codes expected in the next several years.
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