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Conference Paper

The Cost of Address Translation


Jurkiewicz,  Tomasz
Algorithms and Complexity, MPI for Informatics, Max Planck Society;


Mehlhorn,  Kurt
Algorithms and Complexity, MPI for Informatics, Max Planck Society;

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Jurkiewicz, T., & Mehlhorn, K. (2013). The Cost of Address Translation. In P. Sanders, & N. Zeh (Eds.), Proceedings of the 15th Meeting on Algorithm Engineering and Experiments (pp. 148-162). Philadelphia, PA: SIAM. doi:10.1137/1.9781611972931.13.

Cite as: http://hdl.handle.net/11858/00-001M-0000-0015-8656-6
Modern computers are not random access machines (RAMs). They have a memory hierarchy, multiple cores, and virtual memory. In this paper, we address the computational cost of address translation in virtual memory. Starting point for our work is the observation that the analysis of some simple algorithms (random scan of an rray, binary search, heapsort) in either the RAM model or the EM model (external memory model) does not correctly predict growth rates of actual running times. We propose the VAT model (virtual address translation) to account for the cost of address translations and analyze the algorithms mentioned above and others in the model. The predictions agree with the measurements. We also analyze the VAT-cost of cache-oblivious algorithms.