2008 International ANSYS Conference
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1 2008 International ANSYS Conference Maximizing Productivity With InfiniBand-Based Clusters Gilad Shainer Director of Technical Marketing Mellanox Technologies 2008 ANSYS, Inc. All rights reserved. 1 ANSYS, Inc. Proprietary
2 Mellanox InfiniBand Products Software Adapter ICs & Cards Switch ICs End-to-End Validation ADAPTER SWITCH ADAPTER Cables Blade/Rack Servers Switch Storage High Throughput - 40Gb/s Kernel bypass Low latency - 1us Remote DMA (RDMA) Low CPU overhead Reliability End-to-End InfiniBand Solution 2008 ANSYS, Inc. All rights reserved. 2 ANSYS, Inc. Proprietary
3 Leading Customers/Growing Markets Hardware OEMs Servers Software End-Users Enterprise Data Centers Switches High-Performance Computing Storage Embedded Embedded *Partial list 2008 ANSYS, Inc. All rights reserved. 3 ANSYS, Inc. Proprietary
4 Clustering Interconnects Technologies Low performance Gigabit Ethernet Mid performance Proprietary Standard InfiniBand 10Gb/s (SDR) 10 gigabit Ethernet High Performance InfiniBand 20Gb/s (DDR) InfiniBand 40Gb/s (QDR) Criteria Price/performance Cost/performance Jobs per day Free? Nothing is free Future expansions Scalability Efficient architecture 2008 ANSYS, Inc. All rights reserved. 4 ANSYS, Inc. Proprietary
5 Clustering Interconnects Technologies GigE 10GigE IB SDR IB DDR IB QDR Latency (us) BW (uni-dir) 100MB/s 1GB/s 1GB/s 2GB/s 4GB/s CPU Overhead High High Low Low Low Scalable Latency Impact High High Med Low Lowest Point to point operation bandwidth sensitive Collectives latency sensitive But not always 2008 ANSYS, Inc. All rights reserved. 5 ANSYS, Inc. Proprietary
6 InfiniBand Technology Industry Standard Hardware, software, cabling, management Design for clustering and storage interconnect Price and Performance 40Gb/s node-to-node 120Gb/s switch-to-switch 1us application latency Most aggressive roadmap in the industry Reliable with congestion management Efficient RDMA and Transport Offload Kernel bypass CPU focuses on application processing Scalable for Petascale computing & beyond End-to-end quality of service Virtualization acceleration I/O consolidation Including storage Performance Roadmap Gigabits per second InfiniBand Delivers Ultra Low Latency 2008 ANSYS, Inc. All rights reserved. 6 ANSYS, Inc. Proprietary
7 The Fastest InfiniBand Technology ConnectX InfiniBand - 40Gb/s server and storage adapter 1usec application latency, zero scalable latency impact InfiniScale IV - 36 InfiniBand 40Gb/s switch device 3TB switching capability in a single switch device 2008 ANSYS, Inc. All rights reserved. 7 ANSYS, Inc. Proprietary
8 Addressing the Needs for Efficient Computing Faster network streaming propagation Network speed capabilities Solution: InfiniBand QDR Large clusters Scaling to many nodes, many cores per node Solution: High density InfiniBand switch Balanced random network streaming One to One random streaming Solution: Adaptive routing Balanced known network streaming One to One known streaming Solution: Static routing Un-balanced network streaming Many to one streaming Solution: Congestion control Designed to handle all communications in HW 2008 ANSYS, Inc. All rights reserved. 8 ANSYS, Inc. Proprietary
9 ConnectX - Fastest InfiniBand Technology Performance driven architecture MPI latency 1us, ~6.5GB/s with 40Gb/s InfiniBand (bi-directional) MPI message rate of >40 Million/sec Superior real application performance Engineering Automotive, oil & gas, financial analysis, etc. μsec ConnectX IB MPI Latency 1.07μs PCIe Gen2 IB QDR Latency Bytes MB/s ConnectX IB QDR 40Gb/s MPI Bandwidth PCIe Gen2 IB QDR Uni-dir 6.47GB/s IB QDR Bi-dir Bytes 2008 ANSYS, Inc. All rights reserved. 9 ANSYS, Inc. Proprietary
10 ConnectX Multi-core MPI Scalability Latency (μsec) Mellanox ConnectX MPI Latency - Multi-core Scaling Latency (μsec) Mellanox ConnectX MPI Latency - Multi-core Scaling 8 cores 16 cores # of CPU cores (# of processes) # of CPU cores (# of processes) Scalability to 64+ cores per node, to 20K+ nodes per subnet Guarantees same low latency regardless of the number of cores Guarantees linear scalability for real applications 2008 ANSYS, Inc. All rights reserved. 10 ANSYS, Inc. Proprietary
11 Communication/Computation Overlap Transport offload Interconnect maximize applications efficiency Maximum CPU cycles dedicated to application Asynchronous Progress will be available with MVAPICH 1.1 MPI 2008 ANSYS, Inc. All rights reserved. 11 ANSYS, Inc. Proprietary
12 ConnectX InfiniBand Benchmarks Rating (bigger is better) Fluent Eddy_417k Benchmark Results InfiniBand GigE Number of servers Total data send (Byte) 1.00E E E E E+06 Fluent Message Size Profiling 7 Servers 2 Servers The need for bandwidth Scalability mandates Highest Throughput Lowest Scalable Latency The need for latency Message size (Byte) System: Mellanox Cluster Center (AMD dual-core) Interconnects: ConnectX DDR versus GigE 2008 ANSYS, Inc. All rights reserved. 12 ANSYS, Inc. Proprietary
13 ConnectX InfiniBand Benchmarks Rating (bigger is better) Fluent Turbo_500k Benchmark Results IB GigE % Diff Number of Servers Scalability mandates Highest Throughput Lowest Scalable Latency 120% 100% 80% 60% 40% 20% 0% % Difference 1.00E E E E E+06 Fluent Message Size Profiling Message size (Byte) 2008 ANSYS, Inc. All rights reserved. 13 ANSYS, Inc. Proprietary Total data send (Byte) The need for latency The need for bandwidth 2 Servers 7 Servers System: Mellanox Cluster Center (AMD dual-core) Interconnects: ConnectX DDR versus GigE
14 InfiniBand Scaling 2008 ANSYS, Inc. All rights reserved. 14 ANSYS, Inc. Proprietary
15 Windows Clustering Performance Rating increases with IB Rating decreases with GigE Windows CCS Server 2003 Windows HPC Server 2008 will increase InfiniBand performance Native utilization of InfiniBand capabilities Rating (Bigger is better) fl5l1 - IB SDR fl5l1 - GigE fl5l2 - IB SDR fl5l2 - GigE fl5l3 - IB SDR fl5l3 - GigE Core 2008 ANSYS, Inc. All rights reserved. 15 ANSYS, Inc. Proprietary
16 Choosing the Right Interconnect Solution Multi-core and parallelism drive the need for fastest interconnect solution Guarantee BW/latency requirements per core With cluster scalability/problem complexity More large messages BW bound Computations More small messages latency bound Synchronization Real application benchmarks if possible 2008 ANSYS, Inc. All rights reserved. 16 ANSYS, Inc. Proprietary
17 HPC Council Advisory Distinguished HPC alliance (OEMs, IHVs, ISVs, end-users) Members activities Qualify and optimize HPC solutions Early access to new technology, and mutual development of future solutions HPC targeted joint programs A community effort support center for HPC end-users Mellanox Cluster Center Latest InfiniBand and the HPC Advisory Council member technology Development, testing, benchmarking and optimization environment End- user support center - HPCHelp@mellanox.com For details HPC@mellanox.com 2008 ANSYS, Inc. All rights reserved. 17 ANSYS, Inc. Proprietary
18 Mellanox Cluster Center Neptune cluster 32 nodes Dual core AMD Opteron CPUs Helios cluster 32 nodes Quad core Intel Clovertown CPUs Vulcan cluster 32 nodes Quad core AMD Barcelona CPUs Utilizing Fat Tree network architecture (CLOS) Non-blocking switch topology Non-blocking bandwidth InfiniBand 20Gb/s (40Gb/s June 2008) InfiniBand based storage NFS over RDMA, SRP, Cluster file system ANSYS, Inc. All rights reserved. 18 ANSYS, Inc. Proprietary
19 Thank You Join HPC Advisory Council - hpc@mellanox.com ANSYS, Inc. All rights reserved. 19 ANSYS, Inc. Proprietary
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