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Disruptive Technologies in HPC Interconnect

Disruptive Technologies in HPC Interconnect. HPC User Forum April 16, 2012. Why Virtualization in HPC?. Benefits of Virtual Clusters Efficient c luster management Snapshots (checkpoint/restart ) Multi-tenant environments Live workload migration. High Performance Computing

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Disruptive Technologies in HPC Interconnect

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  1. Disruptive Technologies in HPC Interconnect HPC User Forum April 16, 2012

  2. Why Virtualization in HPC? • Benefits of Virtual Clusters • Efficient cluster management • Snapshots (checkpoint/restart) • Multi-tenant environments • Live workload migration • High Performance Computing • Single tasks across multiple CPUs • Traditional virtualization in enterprise • Many tasks across multiple CPUs • Workload consolidation on less machines • Oversubscription of resources HPC App HPC App HPC App HPC App HPC App HPC App HPC App HPC App Operating System Operating System Virtualization Layer

  3. High Performance Virtualization over SR-IOV • HCA shared among Guest OS’es • Virtual Functions assigned to VM • Physical Function controlled by Hypervisor • Complete RDMA software stack run in VMs • Very little throughput and latency overhead • Work in progress to support advance features such as live migration over SR-IOV VM VM VM RDMA Stack RDMA Stack RDMA Stack Hypervisor VF VF VF PF InfiniBand HCA

  4. Co-Design Strategy for Scalable Computing Server/Storage Server/Storage Application Application MPI SHMEM/PGAS Communication Libraries Communication Libraries Bottlenecks Extension of I/O communications (RDMA, collectives, synchronization etc) Network Throughput Latency Message Rate Transport/Collective Offloads Network

  5. Utilizing Co-Design – Mellanox ScalableHPC Mellanox Co-Design MXM - MellanoX Messaging FCA – Fabric Collective Accelerations

  6. OpenMPI Benchmark Results with Accelerators

  7. Collective Acceleration Results for OpenSHMEM

  8. Thank YouHPC@mellanox.com

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