Sepehr Abdous

sabdous1[AT]jh[DOT]edu . sepehrabdous1375[AT]gmail[DOT]edu

I am a Computer Science Ph.D. student at Johns Hopkins University advised by Dr. Soudeh Ghrobani. My research focuses on improving the speed and reliability of modern networks. I have developed mechanisms to detect and quantify congestion events in datacenter networks — critical infrastructure at the core of the Internet. In addition, I have proposed techniques to mitigate congestion both within individual datacenters and across interconnected datacenter fabrics. With the rapid expansion of large-scale Artificial Intelligence (AI) training workloads, my current work targets emerging challenges in AI datacenters, including addressing bandwidth inefficiencies and ensuring scalable, high-throughput network performance.


Publications

Papers

Uno: A One-Stop Solution for Inter- and Intra-Datacenter Congestion Control and Reliable Connectivity

Tommaso Bonato*, Sepehr Abdous*, Abdul Kabbani, Ahmad Ghalayini, Nadeen Gebara, Terry Lam, Anup Agarwal, Tiancheng Chen, Zhuolong Yu, Konstantin Taranov, Mahmoud Elhaddad, Daniele De Sensi, Soudeh Ghorbani, Torsten Hoefler (*Equal contribution)
SC 2025

Tempus: Probabilistic Network Latency Verification

Sepehr Abdous*, Senapati Diwangkara*, Soudeh Ghorbani (*Equal contribution)

PDF    Artifacts

IEEE Access 2024

Practical Packet Deflection in Datacenters

Sepehr Abdous, Erfan Sharafzadeh, Soudeh Ghorbani

PDF    Slides    Artifacts

CoNEXT 2023

Understanding the impact of the host networking elements on traffic bursts

Erfan Sharafzadeh, Sepehr Abdous, Soudeh Ghorbani

PDF    Slides    Artifacts

NSDI 2023

Burst-tolerant Datacenter Networks with Vertigo

Sepehr Abdous*, Erfan Sharafzadeh*, Soudeh Ghorbani (*Equal contribution)

PDF    Slides    Artifacts

CoNEXT 2021

Posters

Implementable selective deflection with Canary

Sepehr Abdous, Erfan Sharafzadeh, Soudeh Ghorbani

Abstract    Poster

NSDI 2023

Vertigo: A Priority-aware Burst-tolerant Datacenter Fabric

Sepehr Abdous, Erfan Sharafzadeh, Sougol Gheissi, Soudeh Ghorbani

Poster

CSLSC 2021

Valinor: Transport-Agnostic Packet Prioritization and Ordering at the Edge

Erfan Sharafzadeh, Sepehr Abdous, Sougol Gheissi, Soudeh Ghorbani

Poster

CSLSC 2021

Work Experience

Microsoft

Consulting researcher

During my time at Microsoft, we designed Uno, a unified congestion control scheme that operates both within and across large-scale datacenter networks.

2024-2025

CCC Intelligent Solutions

Intern

As an intern on the AI Enablement team, I designed and implemented a high-performance data migration technique that significantly improved the speed of transfers between the company's remote storage servers.

2022

HPDS(High Performance Data Storage) Company

Intern

I was responsible for automating the system update process and performing system-level FIO benchmarking tests.

2018

Darmaneh

Frontend Developer

Darmaneh was a startup focused on building a platform for online medical consultations. I was responsible for developing and maintaining the Android and iOS applications.

2016 - 2018

Skills

Programming Languages & Tools

Professional Service

  • Journal reviewer for Computer Networks (2022-2024)
  • Journal reviewer for Journal of Network and Computer Applications (2022-2024)
  • Journal reviewer for Ad Hoc Networks (2022-2023)
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