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Quantitative Finance · Glossário

O que é Rack unit?

Definition 8.10 Networks, Hardware and Trading Infrastructure · Capítulo 8 — Servers

A rack unit (U) is the standard height of equipment in a 19-inch rack, 1.75 inches (44.45 mm); a cabinet commonly holds about 42 of them, and servers are 1U, 2U or taller.

CandidateHot clockPath at hotPath at baseServers perCores per
(GHz)clock (ns)clock (ns)10 kW10\,\mathrm{k}\mathrm{W}10 kW10\,\mathrm{k}\mathrm{W}
AMD EPYC 9175F, one socket5.01 4911 65917272
Intel Xeon Gold 6544Y, one socket4.11 6851 83419304
AMD EPYC 9755, two sockets4.11 6852 24182 048
Overclocked w7-2495X (all cores)4.81 5281 5285120
Table 8.1. Candidates for a hot-path server, with Book 13’s in-process path at 60% core-bound (Proposition 8.2); the hot clock is the single-core boost, or the vendor’s all-core figure for the overclocked server. Servers per cabinet budget each at its processors’ TDP plus 250 W250\,\mathrm{W} (the overclocked one at its 2000 W2000\,\mathrm{W} supply) and 42 rack units. Data: nw_servers.table(), Boxes 8.1 and 8.2.
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