Research, teaching and technology

Sepehr Mahmoodian

PhD researcher at GWDG · University of Göttingen

HPC, cloud & distributed systems

NHR scholarship holder · NHR Graduate School & community

Germany

Education

My background

BSc in Computer Hardware Engineering · Hamedan University of Technology · 2016
MSc in Computer Architecture Engineering · Razi University · 2019
Experience in IoT engineering and university teaching

Research and teaching

At GWDG

GWDG · University of Göttingen
PhD researcher · Computing group (AG C) · since 2025
Supervised by Prof. Dr. Julian Kunkel
Research in continuous data streams, HPC and cloud workflows

Selected work

Ideas, experiments and things I build.

Research · HPC–cloud–IoTIn progress

Continuous data, cloud-to-HPC workflows

Research into connecting continuous IoT and cloud data sources with Slurm-managed HPC processing.

I study ingestion architectures, streaming and storage staging, burst handling, scaling and recovery for hybrid scientific workflows. This is an ongoing research direction.

Research software · Distributed messaging2026In progress

HPC-MQBench

Reproducible messaging benchmarks for HPC clusters.

A benchmark suite for evaluating distributed messaging systems on HPC clusters. Slurm coordinates experiments, MPI provides a shared workload, and restartable campaigns preserve configuration and measurement evidence. Kafka and Pulsar adapters support throughput, latency, correctness, and qualification checks. Developed with Julian Kunkel.

Explore project

Research · HPC storage2026

IO500: storage performance research

Co-authored research using IO500 benchmark submissions and detailed logs to understand storage performance beyond leaderboard scores.

Presented “A Treasure Trove of Performance: Analyzing the IO500 Submission Data” at the ISC 2026 IXPUG Workshop.

Explore project

Hobby project · in development2026In progress

Sephorizon Dispatch

A personal project exploring automated technology-news collection, short-video production and social-media publishing. Built as a hobby, with a private studio for editing, review and approval.

I enjoy building automation tools as a hobby alongside photography and videography. Sephorizon Dispatch is my personal news-production project, focused on computing, HPC, AI and wider technology. My goal is an automated workflow from news collection to short videos and social-media publishing, with my review and approval before publication. The system brings together source collection, evidence checks, script preparation, narration, video rendering and n8n workflow orchestration. The project is under development and testing. Automatic social-media publishing is still being connected; the private studio is where I select stories and review the output.

Embedded systems · Earlier prototype2024Past work

GPS & cellular tracking prototype

An Arduino-based prototype for GPS tracking and cellular reporting.

A GPS tracking prototype combining serial location data, cellular reporting, and a local web interface for configuration. The public repository contains firmware and an embedded configuration page for exploring location-aware embedded systems.

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Master’s thesis · Smart systems2019Past work

Persian-language Smart Interactive IoT Doll

My master’s thesis at Razi University explored the design of a Persian-language smart interactive IoT toy.

Design of a Smart Interactive IoT Doll Based on the Persian Language. M.Sc. in Computer Architecture Engineering, Razi University of Kermanshah, 2019.

Research & scholarship

Papers, posters & presentations

Papers

2026 Accepted

A Treasure Trove of Performance: Analyzing the IO500 Submission Data

Julian Kunkel; Aasish Kumar Sharma; Anila Ghazanfar; Sepehr Mahmoodianhamedani; Sascha Safenreider

IXPUG Workshop, ISC High Performance 2026 · arXiv preprint

About this work

Co-authored research analyzing IO500 submissions and detailed benchmark logs to understand HPC storage performance. Accepted for the IXPUG Workshop at ISC High Performance 2026. The linked version and DOI identify the public arXiv preprint.

View source DOI

2024 Preprint

Optimizing Service Function Chain Mapping in Network Function Virtualization through Simultaneous NF Decomposition and VNF Placement

Asghar Asgharian-Sardroud; Mohammad Hossein Izanlou; Amin Jabbari; Sepehr Mahmoodian Hamedani

arXiv · 2411.07606

About this work

Joint optimization of network-function decomposition and virtual-function placement using NSGA-II, with mapping cost and communication latency as objectives.

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Posters

2026

A Benchmark Suite for Streaming Data Ingestion on Slurm-Based HPC Systems

Julian Kunkel; Sepehr Mahmoodianhamedani

NHR Conference 2026 · Poster P-O-04

About this work

Conference poster listed in the NHR Conference 2026 programme for 14 September 2026. The linked document is the organizer's poster abstract, rather than the full poster.

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Presentations

2026

A Treasure Trove of Performance: Analyzing the IO500 Submission Data

Sepehr Mahmoodian · Julian Kunkel; Aasish Kumar Sharma; Anila Ghazanfar; Sascha Safenreider

ISC 2026 IXPUG Workshop · Hamburg, Germany

About this work

Conference presentation by Sepehr Mahmoodian on 26 June 2026. The organizer's published slides describe the IO500 submission analysis and its storage-performance findings.

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Explore my research profilesORCID Google Scholar

Professional profile

Professional background

Experience

PhD researcher — University of Göttingen / GWDG · since 2025
HPC–cloud convergence, distributed data ingestion, reproducible benchmarking, student supervision and research-oriented teaching.

University lecturer · 2021–2025
Teaching and practical laboratories in digital logic, computer architecture and microcontrollers.

IoT and network engineering
Embedded prototypes, sensor integration, device communication, network maintenance and troubleshooting.

Education

PhD research in Computer Science — University of Göttingen / GWDG · since 2025
HPC, cloud and IoT convergence; distributed systems and data ingestion.

M.Sc. in Computer Architecture Engineering — Razi University · 2019

B.Sc. in Computer Hardware Engineering — Hamedan University of Technology · 2016