matsim-org/matsim-libs
Jan 2025 – Jun 2025
2 Months active
Languages Used
Java
Technical Skills
CI/CDConcurrencyEvent HandlingIntegration TestingJava DevelopmentSimulation
u234825
PROFILE
U234825
Ihab Kaddoura focused on stabilizing and hardening the RailSim module within the matsim-org/matsim-libs repository, addressing complex concurrency and event sequencing issues in Java-based simulation environments. Over two months, he resolved critical bugs such as infinite loops in path construction during two-direction rerouting and deadlocks involving train reservations, using integration testing and test-driven development to surface and verify these issues. His work improved CI/CD reliability, particularly on Windows pipelines, by refining event handling and simplifying test cases. Through these targeted fixes, Ihab enhanced simulation correctness and reliability, demonstrating depth in concurrency management and automated testing within large-scale simulation systems.
Overall Statistics
Feature vs Bugs
0%Features
Repository Contributions
5Total
Bugs
3
Commits
5
Features
0
Lines of code
997
Activity Months2
Your Network
62 peopleSame Organization
@sbb.ch32
Shared Repositories
30
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Ricardo EwertMember
Friedrich VölkersMember
Gerry CaseyMember
paulhMember
Jakob RehmannMember
janekderersteMember
Johan W. JoubertMember
Work History
June 2025
1 Commits
Jun 1, 2025June 2025 monthly summary focusing on stabilizing Rail Simulation concurrency and test reliability in matsim-libs. Delivered a fix to deadlock avoidance for trains already present in a reservation and extended the Railsim integration test to verify end-of-line vehicle arrivals, addressing a failing test.
1 Commits
Jun 1, 2025June 2025 monthly summary focusing on stabilizing Rail Simulation concurrency and test reliability in matsim-libs. Delivered a fix to deadlock avoidance for trains already present in a reservation and extended the Railsim integration test to verify end-of-line vehicle arrivals, addressing a failing test.
June 2025
January 2025
4 Commits
Jan 1, 2025January 2025 (2025-01): RailSim rerouting stability and test reliability focus. No new features shipped this period; primary value delivered through hardening path construction, improving event sequencing after rerouting, and stabilizing cross-platform CI tests.
January 2025
4 Commits
Jan 1, 2025January 2025 (2025-01): RailSim rerouting stability and test reliability focus. No new features shipped this period; primary value delivered through hardening path construction, improving event sequencing after rerouting, and stabilizing cross-platform CI tests.
Activity
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Quality Metrics
Correctness80.0%
Maintainability80.0%
Architecture72.0%
Performance60.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
Java
Technical Skills
CI/CDConcurrencyEvent HandlingIntegration TestingJava DevelopmentSimulationSimulation TestingTest Driven DevelopmentTesting
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