Networking

Network configuration is critical for HPC cluster performance. Proper setup, tuning, and monitoring ensure optimal communication between nodes.

Consistency is Key: All measurements across message sizes should show smooth performance curves. Irregular patterns typically indicate configuration problems with the network or system.

Benchmarks

Standard HPC Network Benchmarks

• Intel IMB-MPI1: Comprehensive MPI communication benchmarks

• OSU MPI Benchmarks: Detailed latency and bandwidth measurements

• RDMA Read/Write Latency/Bandwidth: Direct RDMA performance testing

• KNEM Latency/Bandwidth: Kernel-assisted intra-node communication