E3SM-Project/E3SM
Jan 2025 – Aug 2025
7 Months active
Languages Used
CC++ShellCMakeFortranPythoncmake
Technical Skills
Build SystemsHigh-Performance ComputingLibrary ManagementPerformance OptimizationSystem AdministrationC++
dqwu
PROFILE
Dqwu
Worked on the E3SM-Project/E3SM repository, delivering features and fixes across high-performance computing infrastructure and I/O systems. Over seven months, implemented ADIOS-based compression workflows, expanded cluster capacity with Ubuntu 22.04 nodes, and enhanced MPAS data handling for large-scale simulations. Leveraged C++, CMake, and Fortran to modernize build systems, enable dynamic I/O configuration, and support advanced data formats like CDF-5. Addressed build reliability and portability by refining environment variables, compiler flags, and distributed file I/O patterns. The work improved system administration, performance optimization, and scientific computing workflows, resulting in more robust, scalable, and maintainable HPC environments for E3SM development.
Overall Statistics
Feature vs Bugs
77%Features
Repository Contributions
19Total
Bugs
3
Commits
19
Features
10
Lines of code
658
Activity Months7
Your Network
121 peopleSame Organization
@mcs.anl.gov13
Azamat MametjanovMember
Satish BalayMember
Barry SmithMember
Phil CarnsMember
Lois Curfman McInnesMember
Iulian GrindeanuMember
Robert JacobMember
jayeshkrishnaMember
Ken RaffenettiMember
Shared Repositories
108
Abhishek BagusettyMember
Erin ThomasMember
Erin ThomasMember
Oscar Diaz-IbarraMember
Andrew RobertsMember
Andrew RobertsMember
Alexander HagerMember
Andrew M. BradleyMember
Andrew M. BradleyMember
Work History
August 2025
5 Commits • 1 Features
Aug 1, 2025Concise monthly summary for 2025-08 focusing on business value and technical achievements across E3SM. Key features delivered included Fortran preprocessor support in the build system, enabling -cpp for craygnu-mphipcc and mirroring in craygnu-hipcc.cmake. Major bugs fixed included GCC 13 OpenMP compatibility fix (replacing -fopenmp=libgomp with -fopenmp), EAMxx test stability improvements on Frontier by relocating ADIOS libraries to persistent storage, and SCORPIO/PIO NCZarr and IO correctness enhancements (detect NCZarr via PIO_ENABLE_NCZARR and fix ice_pio_init to broadcast file existence checks from master). Overall impact: improved portability, reliability, and IO correctness; reduces nightly/build-time failures and ensures Frontier runs remain stable. Technologies demonstrated: CMake, Fortran CPP preprocessing, GCC OpenMP flags, ADIOS/IO, NCZarr, PIO, SCORPIO, distributed initialization patterns.
5 Commits • 1 Features
Aug 1, 2025Concise monthly summary for 2025-08 focusing on business value and technical achievements across E3SM. Key features delivered included Fortran preprocessor support in the build system, enabling -cpp for craygnu-mphipcc and mirroring in craygnu-hipcc.cmake. Major bugs fixed included GCC 13 OpenMP compatibility fix (replacing -fopenmp=libgomp with -fopenmp), EAMxx test stability improvements on Frontier by relocating ADIOS libraries to persistent storage, and SCORPIO/PIO NCZarr and IO correctness enhancements (detect NCZarr via PIO_ENABLE_NCZARR and fix ice_pio_init to broadcast file existence checks from master). Overall impact: improved portability, reliability, and IO correctness; reduces nightly/build-time failures and ensures Frontier runs remain stable. Technologies demonstrated: CMake, Fortran CPP preprocessing, GCC OpenMP flags, ADIOS/IO, NCZarr, PIO, SCORPIO, distributed initialization patterns.
August 2025
July 2025
4 Commits • 3 Features
Jul 1, 2025For 2025-07, delivered core IO and data-format enhancements in MPAS within the E3SM project, focusing on scalable storage, external configurability, and 64-bit data support. The work strengthens E3SM’s readiness for large HPC runs and external workflow integration, while expanding data interoperability across platforms such as Aurora.
July 2025
4 Commits • 3 Features
Jul 1, 2025For 2025-07, delivered core IO and data-format enhancements in MPAS within the E3SM project, focusing on scalable storage, external configurability, and 64-bit data support. The work strengthens E3SM’s readiness for large HPC runs and external workflow integration, while expanding data interoperability across platforms such as Aurora.
June 2025
1 Commits • 1 Features
Jun 1, 2025June 2025 monthly summary for E3SM infrastructure modernization. The primary focus was expanding capacity with Ubuntu 22.04 nodes and retiring the Ubuntu 20.04 hardware to align with current OS standards, improve security posture, and optimize resource allocation. Implemented by provisioning additional Ubuntu 22.04 nodes on the anlgce-ub22 pool and decommissioning the legacy anlgce 20.04 machine. This work reduces ongoing maintenance, simplifies future upgrades, and enhances overall system reliability for compute workloads. Work is tracked under the committed change a87961b7f6dafda5e2da213e08036564cbc4c83d.
1 Commits • 1 Features
Jun 1, 2025June 2025 monthly summary for E3SM infrastructure modernization. The primary focus was expanding capacity with Ubuntu 22.04 nodes and retiring the Ubuntu 20.04 hardware to align with current OS standards, improve security posture, and optimize resource allocation. Implemented by provisioning additional Ubuntu 22.04 nodes on the anlgce-ub22 pool and decommissioning the legacy anlgce 20.04 machine. This work reduces ongoing maintenance, simplifies future upgrades, and enhances overall system reliability for compute workloads. Work is tracked under the committed change a87961b7f6dafda5e2da213e08036564cbc4c83d.
June 2025
April 2025
4 Commits • 2 Features
Apr 1, 2025Month: 2025-04 — Summary of developer work for E3SM repo focusing on cluster capacity and build-system reliability. Key outcomes include expanding compute capacity with an Ubuntu 22.04 node and strengthening cross-environment HDF5/SCORPIO integration to reduce build failures and improve workload portability. Overall impact: Increased cluster readiness and more reliable HPC builds across major platforms, enabling faster iteration on simulations and broader environment compatibility. Demonstrated skills in infrastructure provisioning, CMake-based build tooling, and cross-HPC standardization.
April 2025
4 Commits • 2 Features
Apr 1, 2025Month: 2025-04 — Summary of developer work for E3SM repo focusing on cluster capacity and build-system reliability. Key outcomes include expanding compute capacity with an Ubuntu 22.04 node and strengthening cross-environment HDF5/SCORPIO integration to reduce build failures and improve workload portability. Overall impact: Increased cluster readiness and more reliable HPC builds across major platforms, enabling faster iteration on simulations and broader environment compatibility. Demonstrated skills in infrastructure provisioning, CMake-based build tooling, and cross-HPC standardization.
March 2025
1 Commits • 1 Features
Mar 1, 2025March 2025: Enabled ADIOS compression support by updating the library to 2.10.2 on Chrysalis, enabling tests for both lossless and lossy compression. This work reduces storage needs and has potential I/O performance benefits for large-scale simulations, while establishing a foundation for compression experimentation across MPI configurations and MGARD. All changes are tracked in the E3SM repository.
1 Commits • 1 Features
Mar 1, 2025March 2025: Enabled ADIOS compression support by updating the library to 2.10.2 on Chrysalis, enabling tests for both lossless and lossy compression. This work reduces storage needs and has potential I/O performance benefits for large-scale simulations, while establishing a foundation for compression experimentation across MPI configurations and MGARD. All changes are tracked in the E3SM repository.
March 2025
February 2025
2 Commits • 1 Features
Feb 1, 2025February 2025 Monthly Summary for E3SM development efforts, focused on expanding I/O capabilities and performance optimization through ADIOS-based compression workflows in SCORPIO.
February 2025
2 Commits • 1 Features
Feb 1, 2025February 2025 Monthly Summary for E3SM development efforts, focused on expanding I/O capabilities and performance optimization through ADIOS-based compression workflows in SCORPIO.
January 2025
2 Commits • 1 Features
Jan 1, 2025January 2025 (2025-01): Implemented cross-platform compression testing capability for E3SM by upgrading ADIOS libraries and enabling compression workflows on Frontier and ANL GCE workstations. This included enabling both lossless and lossy compression testing and recording two commit-based upgrades for traceability.
2 Commits • 1 Features
Jan 1, 2025January 2025 (2025-01): Implemented cross-platform compression testing capability for E3SM by upgrading ADIOS libraries and enabling compression workflows on Frontier and ANL GCE workstations. This included enabling both lossless and lossy compression testing and recording two commit-based upgrades for traceability.
January 2025
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Quality Metrics
Correctness91.0%
Maintainability93.6%
Architecture91.0%
Performance86.8%
AI Usage20.0%
Skills & Technologies
Programming Languages
CC++CMakeFortranPythonShellcmake
Technical Skills
Build System ConfigurationBuild SystemsC++CMakeCMake Module DevelopmentCode RefactoringConfiguration ManagementData FormatsDistributed SystemsEnvironment VariablesFile I/OFull Stack DevelopmentHPC Environment AdaptationHPC Environment ConfigurationHigh-Performance Computing
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