The Network Times
Tuesday, 13 January 2026

Ultra Ethernet: Congestion Control Context

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 Ultra Ethernet Transport (UET) uses a vendor-neutral, sender-specific congestion window–based congestion control mechanism together with fl...
Tuesday, 6 January 2026

UET Congestion Management: CCC Base RTT

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Calculating Base RTT [Edit: January 7 2026, RTT role in CWND adjustment process] As described in the previous section, the Bandwidth-Delay P...
Saturday, 3 January 2026

UET Congestion Management: Congestion Control Context

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Congestion Control Context Updated 5.1.2026: Added CWND computation example into figure. Added CWND cmputaiton into text. Updated 13.1.2026:...
Monday, 29 December 2025

UET Congestion Management: Introduction

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 Introduction Figure 6-1 depicts a simple scale-out backend network for an AI data center. The topology follows a modular design, allowing t...
2 comments:
Monday, 15 December 2025

UET Request–Response Packet Flow Overview

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 This section brings together the processes described earlier and explains the packet flow from the node perspective. A detailed network-lev...
1 comment:
Wednesday, 10 December 2025

UET Protocol: How the NIC constructs packet from the Work Entries (WRE+SES+PDS)

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 Semantic Sublayer (SES) Operation  [Rewritte 12. Dec-2025] After a Work Request Entity (WRE) is created, the UET provider generates the par...
Thursday, 27 November 2025

UET Relative Addressing and Its Similarities to VXLAN

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 Relative Addressing As described in the previous section, applications use endpoint objects as their communication interfaces for data tran...
Monday, 24 November 2025

UET Data Transfer Operation: Work Request Entity and Semantic Sublayer

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Work Request Entity (WRE)  [SES part updated 7-Decembr 2025: text and figure]  The UET provider constructs a Work Request Entity (WRE) from ...
Monday, 17 November 2025

UET Data Transfer Operation: Introduction

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Introduction [Updated 22 November 2025: Handoff Section] The previous chapter described how an application gathers information about availab...
Monday, 10 November 2025

UET Data Transport Part I: Introduction

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[Figure updated 13 November 2025] My previous UET posts explained how an application uses libfabric function API calls to discover available...
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