Real-time Performance Monitoring of HPC Clusters: Techniques and Challenges

In the era of exascale computing, High-Performance Computing (HPC) clusters have become essential for addressing complex computational challenges across various domains. The increasing scale and complexity of HPC systems pose significant challenges in ensuring optimal performance and resource utilization. Real-time performance monitoring has emerged as a critical requirement to address these challenges effectively. The paper offers a comprehensive analysis of real-time performance monitoring techniques and challenges within HPC clusters focusing on three key monitoring approaches: Prometheus for agent-based monitoring, the ELK (Elasticsearch, Logstash, Kibana) stack for log-based monitoring, and machine learning/artificial intelligence techniques for proactive analysis. The implementation of Prometheus and Node Exporter for real-time metrics collection, the utilization of the ELK stack for log aggregation and analysis, and the integration of ML/AI for anomaly detection and predictive analytics are explored. Challenges such as scalability, heterogeneity, and dynamic workloads are addressed in the context of each monitoring approach. The findings demonstrate that each technique offers unique advantages and trade-offs, providing valuable insights for improving HPC performance monitoring practices.