512-bit computing: Difference between revisions

Revision as of 21:43, 31 January 2021

Revision as of 21:48, 31 January 2021

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There are currently no mainstream general-purpose [[CPU|processors]] built to operate on 512-bit integers or addresses, though a number of processors do operate on 512-bit data. {{As of|2013}}, the [[Xeon Phi|Intel Xeon Phi]] has a [[vector processing unit]] with 512-bit vector registers, each one holding sixteen 32-bit elements or eight 64-bit elements, and a single instruction can operate on all these values in parallel. However, the Xeon Phi's vector processing unit does not operate on individual numbers that are 512 bits in length.<ref>{{cite web|url=https://software.intel.com/sites/default/files/managed/09/07/xeon-phi-coprocessor-system-software-developers-guide.pdf|title=Intel Xeon Phi Coprocessor System Software Developers Guide|publisher=[[Intel]]|date=March 2014|access-date=April 30, 2019}}</ref>

A 512-bit register can store 2⁵¹² different values. The range of [[integer]] values that can be stored in 256512 bits depends on the [[Integer (computer science)#Value%20and%20representation|integer representation]] used.

The maximum value of an unsigned 512-bit integer is 13,407,807,929,942,597,099,574,024,998,205,846,127,479,365,820,592,393,377,723,561,443,721,764,030,073,546,976,801,874,298,166,903,427,690,031,858,186,486,050,853,753,882,811,946,569,946,433,649,006,084,095 (2⁵¹² − 1).