Network High Performance Computing Engineering

3 weeks ago

Seattle, United States E-Solutions Full time

Job Title: Network High Performance Computing Engineering

Onsite in Seattle 4 days/week.


The Client Prefers only Local consultant


Key Responsibilities:


  • Designing and deploying HPC clusters consisting of high-performance servers, interconnected by high-speed networks such as InfiniBand (IB) or Ethernet/RoCE with RDMA capabilities.
  • InfiniBand Responsibilities:
  • Fabric Design and Configuration: Designing InfiniBand fabrics, including switches, host channel adapters (HCAs), and cables, to ensure optimal performance, scalability, and fault tolerance. Configuring switch ports, virtual lanes (VLs), and routing tables to facilitate efficient data communication within the InfiniBand fabric.
  • Topology Optimization: Analyzing workload characteristics and traffic patterns to design InfiniBand topologies (e.g., fat-tree, hypercube) that minimize latency and maximize bandwidth utilization. Implementing routing policies and congestion control mechanisms to optimize traffic flow and prevent network congestion.
  • Fabric Monitoring and Management: Monitoring InfiniBand fabric health and performance using management tools such as Subnet Manager (SM) and Performance Monitoring Counters (PMCs). Performing regular maintenance tasks, including firmware updates, port diagnostics, and error detection and correction.
  • Quality of Service (QoS): Implementing QoS policies to prioritize traffic based on application requirements and service levels. Configuring traffic classes, service levels, and virtual lanes (VLs) to ensure predictable performance for latency-sensitive applications.
  • Security and Access Control: Securing the InfiniBand fabric with features such as subnet partitioning (subnet manager security) and encryption to protect data integrity and confidentiality. Enforcing access controls and authentication 6 mechanisms to restrict unauthorized access to the InfiniBand network.
  • RoCE Responsibilities
  • Network Design and Configuration: Designing and configuring RoCE networks, including switches, network adapters, and Ethernet fabrics, to provide low-latency, high-bandwidth communication for RDMA traffic. Optimizing network settings such as MTU (Maximum Transmission Unit), buffer sizes, and flow control parameters to maximize RoCE performance.
  • Congestion Management: Implementing congestion management mechanisms, such as Priority Flow Control (PFC) and Data Center Bridging (DCB), to prevent congestion and ensure fair allocation of network resources. Monitoring network traffic and congestion levels to dynamically adjust congestion control settings and avoid performance degradation.
  • Routing and Switching Optimization: Configuring RoCE-aware switches and routers to support RDMA traffic and enable efficient routing of packets between endpoints. Tuning switch port settings, forwarding tables, and routing protocols to minimize packet loss and maximize throughput for RoCE traffic.
  • Performance Monitoring and Tuning: Monitoring RoCE network performance metrics, such as latency, throughput, and packet loss, using tools like Ethernet Performance Monitoring (EPM) and InfiniBand Performance Monitoring (IPM). Analyzing performance data to identify bottlenecks, optimize network configurations, and fine-tune RoCE parameters for optimal performance.
  • Security and Authentication: Implementing security measures, such as MACsec (Media Access Control Security) and IPsec (Internet Protocol Security), to encrypt and authenticate RDMA traffic over RoCE networks. Enforcing access controls and certificate-based authentication to ensure secure communication between RoCE endpoints.



Basic Qualification:

  • Minimum 3 years experience with InfiniBand architecture, protocols IBTA , and technologies e.g., Mellanox InfiniBand. Proficiency in RoCE RDMA over Converged Ethernet protocols, including RoCEv2 and related standards.
  • Minimum 3 years experience in designing and configuring high performance networks, including InfiniBand fabrics and RoCE enabled Ethernet networks. Knowledge of fabric design principles, topology optimization, and performance tuning techniques.
  • Minimum 3 years experience analyzing network performance metrics, diagnose bottlenecks, and optimize network configurations for low latency and high throughput. Experience in tuning switch port settings, buffer sizes, and flow control parameters to maximize RoCE performance.
  • Minimum 3 years experience with security measures for InfiniBand and RoCE networks, including subnet partitioning, encryption, and access controls. Knowledge of authentication mechanisms and cryptographic protocols for securing RDMA traffic.
  • Minimum 3 years experience with network monitoring tools and techniques for monitoring InfiniBand and RoCE network health and performance. Ability to troubleshoot network issues, diagnose connectivity problems, and resolve performance related issues.
  • Minimum 3 years hands on experience in deploying, managing, and optimizing high performance computing HPC environments and data center networks.
  • Minimum 3 years experience working with RDMA enabled applications and parallel computing frameworks e.g., MPI, OpenMP.
  • Minimum 3 years experience implementing and troubleshooting complex network configurations, including InfiniBand switches, gateways, and RoCE adapters.
  • High School Diploma or GED.


Preferred Qualification:


  • Previous experience with network equipment vendor products (e.g., Juniper, Cisco, Arista, OEM).
  • A solid educational foundation in computer science or IT is essential for understanding networking principles and protocols.
  • Certification programs offered by vendors such as Mellanox now NVIDIA Networking for InfiniBand and RoCE technologies.
  • Bachelor s degree in Computer Science, Computer Engineering, relevant technical field, or equivalent practical experience 5 years.

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