Summary
Software
Work History
Education
Skills
Certification
Overview
Timeline
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Seong-Wan Hong

Seong-Wan Hong

HPC Application Analyst
Cheongju-si,42

Summary

HPC Application Analyst with hands-on experience supporting large-scale supercomputing environments for operational weather and climate modeling.
Currently providing on-site application support at the Korea Meteorological Administration, focusing on MPI-based performance tuning and application optimization in Linux HPC environments.
Experienced in collaborating with system teams and vendors across the full lifecycle of HPC systems, from deployment to production operations.
Actively expanding expertise in AI and advanced computing to support next-generation HPC and AI convergence workloads.

Software

HPC Weather Applications (WRF, KIM, UM)

HPC Benchmarks (HPL, IOR, IMB, STREAM, DGEMM)

Programming Languages (Linux, Python, Fortran(intermediate), C(Intermediate)

Parallel Programming (MPI, OpenMP, MPIOpenMP)

Compilers ( Intel / ifor, icc, icx, GNU / gcc, gfortran, AMD AOCC (studied / familiar with concepts))

Work History

HPC Application Analyst

JPLANiT
12.2023 - Current
  • Provided on-site HPC application support at the Korea Meteorological Administration (KMA), supporting large-scale operational weather and climate models in a production supercomputing environment.
  • Debugged and optimized MPI/OpenMP-based workloads, identifying performance bottlenecks related to scalability, CPU affinity, and parallel I/O on multi-node clusters.
  • Supported execution and performance tuning of numerical weather prediction models such as WRF and KIM, ensuring stable operation for forecasting workflows.
  • Worked closely with system administrators and external vendors to troubleshoot application and system-level performance issues on Intel-based HPC systems.
  • Assisted users with job scheduling, runtime configuration, and best practices for running parallel applications in Linux-based HPC environments.
  • Expanded responsibilities to include Python-based automation and early-stage integration of AI/LLM tools into scientific and HPC workflows.

HPC System Engineer

SolidENG
12.2019 - 10.2021
  • Supported the deployment of a national-scale HPC system for the Korea Meteorological Administration (KMA), including OS installation, cluster provisioning, and system bring-up for 800+ compute nodes.
  • Configured and validated core HPC components such as InfiniBand interconnects, parallel file systems (DSS-G), job schedulers, and monitoring tools for production environments.
  • Performed hands-on hardware diagnostics, system troubleshooting, and performance validation in collaboration with vendors including IBM and Lenovo.
  • Built and maintained HPC software environments, including LDAP authentication, scheduler configuration, and operational scripts, and supported users during system stabilization and transition to production.

Education

Master of Science - Artificial Intelligence Applications

Kookmin University
Seoul, Republic Of Korea
04.2001 -

Skills

HPC Application TuningPerformance Analysis & OptimizationMPI Scalability AnalysisCPU Affinity & Process PlacementParallel I/O Optimization

Certification

Engineer Information Processing

Overview

6
6
years of professional experience
1
1
Certification
1
1
Language

Timeline

HPC Application Analyst

JPLANiT
12.2023 - Current

HPC System Engineer

SolidENG
12.2019 - 10.2021

Engineer Information Processing

05-2016

Master of Science - Artificial Intelligence Applications

Kookmin University
04.2001 -

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Seong-Wan HongHPC Application Analyst