Nehalem Hochleistungsrechnen für reale Anwendungen

Transcription

1 Nehalem Hochleistungsrechnen für reale Anwendungen T-Systems HPCN Workshop DLR Braunschweig May 14-15, 2009 Hans-Joachim Plum Intel GmbH 1

2 Performance tests and ratings are measured using specific computer systems and/or components and reflect the approximate performance of Intel products as measured by those tests. Any difference in system hardware or software design or configuration may affect actual performance. Buyers should consult other sources of information to evaluate the performance of systems or components they are considering purchasing. For more information on performance tests and on the performance of Intel products, visit or call (U.S.) or Intel does not control or audit the design or implementation of third party benchmarks or Web sites referenced in this document. Intel encourages all of its customers to visit the referenced Web sites or others where similar performance benchmarks are reported and confirm whether the referenced benchmarks are accurate and reflect performance of systems available for purchase. Relative performance is calculated by assigning a baseline value of 1.0 to one benchmark result, and then dividing the actual benchmark result for the baseline platform into each of the specific benchmark results of each of the other platforms, and assigning them a relative performance number that correlates with the performance improvements reported. SPEC, SPECint, SPECfp, SPECrate. SPECpower, SPECjAppServer, SPECjbb, SPECjvm, SPECWeb, SPECompM, SPECompL, SPEC MPI, are trademarks of the Standard Performance Evaluation Corporation. See for more information. TPC-C, TPC-H, TPC-E are trademarks of the Transaction Processing Council. See for more information. Intel Virtualization Technology requires a computer system with an enabled Intel processor, BIOS, virtual machine monitor (VMM) and, for some uses, certain platform software enabled for it. Functionality, performance or other benefits will vary depending on hardware and software configurations and may require a BIOS update. Software applications may not be compatible with all operating systems. Please check with your application vendor. Hyper-Threading Technology requires a computer system with a processor supporting HT Technology and an HT Technology-enabled chipset, BIOS and operating system. Performance will vary depending on the specific hardware and software you use. For more information including details on which processors support HT Technology, see here Intel Turbo Boost Technology requires a Platform with a processor with Intel Turbo Boost Technology capability. Intel Turbo Boost Technology performance varies depending on hardware, software and overall system configuration. Check with your platform manufacturer on whether your system delivers Intel Turbo Boost Technology. For more information, see Intel processor numbers are not a measure of performance. Processor numbers differentiate features within each processor series, not across different processor sequences. See for details. Intel products are not intended for use in medical, life saving, life sustaining, critical control or safety systems, or in nuclear facility applications. All dates and products specified are for planning purposes only and are subject to change without notice * Other names and brands may be claimed as the property of others. Legal Disclaimers Copyright 2009 Intel Corporation. All rights reserved. Intel, the Intel logo, Xeon and Intel Core are trademarks or registered trademarks of Intel Corporation or its subsidiaries in the United States and other countries. All dates and products specified are for planning purposes only and are subject to change without notice 2

3 Agenda Part 1 Excerpt of a huge collection of benchmarks Intel has performed in all areas, in order to show the leap ahead from pre-nehalem to Nehalem; prepared for public presentations Part 2 Some results of a project between DLR and Intel re TAU including a pre-nehalem Nehalem comparison 3

4 Material in Part 1.. Based on extensive presentation by Kuppuswamy Sivakumar Intel Server Platforms Group Marketing Approved for external usage Rev 1.1 April 09,

5 Material in Part Is an excerpt of a huge collection of Nehalem benchmark results found there - SPEC (fp, int, power, JAVA,.); SAP; VMmark - SPEC omp and MPI - key Server and HPC benchmarks - real key HPC applications and many more 5

6 Dynamically Scalable and Innovative New Design Scalable from 2 to 8 cores Microarchitecture enhancements 2-way Hyper-Threading Integrated memory controller Intel QuickPath interconnect Shared Level-3 cache Dynamic power management New SSE 4.2 instructions Turbo Mode converts thermal headroom into higher frequencies Optional Integrated Graphics (desktop/mobile) 6

7 Intel Xeon 5500 Platform NEW! New Memory Subsystem Intel QuickPath Interconnect NEW! Intel 5520 Chipset Intel Node Manager Intel Data Center Manager PCI Express* 2.0 NEW! NEW! Intel Intelligent Power Technology New I/O Subsystem Intel X25-E SSDs ICH 9/10 Intel GbE Controller Massive Platform level innovations 7

8 Intel Xeon Processor 5500 series based Server platforms Server Performance comparison to Xeon 5400 Series Relative Performance Higher is better Xeon 5500 vs Xeon 5400 on Server Benchmarks Xeon 5400 series Energy Efficiency Server Side Java Java Apps Integer App Server ERP Floating point Database Web Database Virtualizati on Baseline SPECpow er*_ ssj2008 SPECjbb* 2005 SPECjvm* 2008 SPECint*_ rate_ base2006 SPECjApp* Server2004 SAP-SD* 2- Tier SPECfp*_ rate_ base2006 TPC*-C SPECWeb* 2005 TPC*-E VMmark* Source: Published/submitted/approved results March 30, See backup for additional details gains on key server benchmarks 8 Performance tests and ratings are measured using specific computer systems and/or components and reflect the approximate performance of Intel products as measured by those tests. Any difference in system hardware or software design or configuration may affect actual performance. Buyers should consult other sources of information to evaluate the performance of systems or components they are considering purchasing. For more information on performance tests and on the performance of Intel products, visit Copyright 2009, Intel Corporation. * Other names and brands may be claimed as the property of others.

9 Intel Xeon Processor 5500 series based Server platforms HPC Performance comparison to Xeon 5400 Series Relative Performance Higher is better Xeon 5400 series Weather FEA FEA CFD CFD Energy Open MP Energy Open MP Weather Energy Source: Published/submitted/approved results March 30, See backup for additional details 2-3 x gains on key HPC applications 9 Performance tests and ratings are measured using specific computer systems and/or components and reflect the approximate performance of Intel products as measured by those tests. Any difference in system hardware or software design or configuration may affect actual performance. Buyers should consult other sources of information to evaluate the performance of systems or components they are considering purchasing. For more information on performance tests and on the performance of Intel products, visit Copyright 2009, Intel Corporation. * Other names and brands may be claimed as the property of others.

10 Intel Xeon Processor 5500 series based Server platforms SPEC MPI* 2007 performance on a multi-node cluster Higher is better Key Details Cluster configuration, Comparison on equal number of Nodes, Each node contains two quad-core cpus. 1 thread/core Result published by SGI on SGI Altix ICE 8200EX* server based cluster, Comparison based on base score results All data based on published results at as of March 30, 2009 Benchmark notes Benchmark suite for evaluating MPI-parallel, floating point, compute intensive performance for cluster and SMP hardware. Developed from native Message Passing Interface (MPI) parallel end-user applications Cluster scaling on SPEC MPI Source: Published/submitted/approved results March 30, See backup for additional details Performance tests and ratings are measured using specific computer systems and/or components and reflect the approximate performance of Intel products as measured by those tests. Any difference in system hardware or software design or configuration may affect actual performance. Buyers should consult other sources of information to evaluate the performance of systems or components they are considering purchasing. For more information on performance tests and on the performance of Intel products, visit Copyright 2009, Intel Corporation. * Other names and brands may be claimed as the property of others.

11 Intel Xeon Processor 5500 series based Server platforms Crash Simulation Analysis using LS-DYNA* - cluster results Comparison Details: Comparison based on published results at as of March 30, Cluster Result published by SGI on SGI Altix ICE 8200EX* server based cluster Relative Performance Higher is better Benchmark details: LS-DYNA is a general purpose transient dynamic finite element program capable of simulating complex real world problems, for use in various industries, including Automobile Design, Aerospace, Manufacturing, and Bioengineering. The chart for 3 Vehicle collision shows cluster benchmark comparisons of automotive crash simulation for 3 vehicle rear end crash. The simulation involves a minivan crashing into rear of a compact car, which in turn crashes into rear of a mid-size car. The chart for Car2Car shows cluster benchmark comparisons of automotive crash simulation for the head-on crash of two minivans (Car2Car). Results were shown for increasing number of cluster nodes from one to sixteen. Relative Performance Higher is better 11 Cluster scaling on LS-DYNA workoads Source: Published/submitted/approved results March 30, See backup for additional details Performance tests and ratings are measured using specific computer systems and/or components and reflect the approximate performance of Intel products as measured by those tests. Any difference in system hardware or software design or configuration may affect actual performance. Buyers should consult other sources of information to evaluate the performance of systems or components they are considering purchasing. For more information on performance tests and on the performance of Intel products, visit Copyright 2009, Intel Corporation. * Other names and brands may be claimed as the property of others.

12 Intel Xeon Processor 5500 series based Server platforms Floating Point Throughput performance on SPECfp*_rate_base2006 Relative Performance Higher is better Xeon 5160 Xeon 5365 Xeon 5482 Xeon 5570 Consolidate your IT infrastructure with Xeon 5500 series 12 Server performance based on best publically available SPECfp_rate_base2006* results from as of March 30, For the result s from (first five bars in the chart) performance scores are based on Intel internal estimates. Performance tests and ratings are measured using specific computer systems and/or components and reflect the approximate performance of Intel products as measured by those tests. Any difference in system hardware or software design or configuration may affect actual performance. Buyers should consult other sources of information to evaluate the performance of systems or components they are considering purchasing. For more information on performance tests and on the performance of Intel products, visit Copyright 2009, Intel Corporation. * Other names and brands may be claimed as the property of others.

13 Intel Xeon Processor 5500 series based Server platforms Energy Efficienct performance on SPECpower*_ssj Relative Performance Higher is better Data Source: Intel measured results as of March 30, See backup for details DC 0.0 Xeon L5420 (2.50/1333) Xeon 5400 Series ( Harpertown ) Xeon L5430 (2.66/1333) Xeon 5460 (3.16/1333) Xeon 5470 (3.33/1333) Xeon 5502 (1.86/4.8) Xeon 5504 (2.00/4.8) Xeon 5506 (2.13/4.8) Xeon 5506 LV(2.13/4.8) Xeon 5520 (2.26/5.86) Xeon 5500 Series ( Nehalem( Nehalem-EP ) Xeon 5520 LV(2.26/5.86) Xeon 5530 (2.40/5.86) Xeon 5540 (2.53/5.86) Xeon 5550 (2.66/6.4) Xeon 5560 (2.80/6.4) Xeon 5570 (2.93/6.4) Xeon 5500 series for Energy Efficient Servers 13 Xeon 54xx Quad-Core Intel Xeon Processor 54xx ( Harpertown ) Xeon 55xx Intel Xeon Processor 55xx ( Nehalem-EP ) Performance tests and ratings are measured using specific computer systems and/or components and reflect the approximate performance of Intel products as measured by those tests. Any difference in system hardware or software design or configuration may affect actual performance. Buyers should consult other sources of information to evaluate the performance of systems or components they are considering purchasing. For more information on performance tests and on the performance of Intel products, visit Copyright 2009, Intel Corporation. * Other names and brands may be claimed as the property of others.

14 Intel Xeon Processor 5500 series based Server platforms Stream Bandwidth for Xeon X5570 processor Stream Maximum Bandwidth B/W: Mbytes/Sec (Triad) DDR across 3 channels Up to 1 DPC (6 DIMMs total) Higher is better Max capacity: 48 GB General purpose: DDR across 3 channels Up to 2 DPC (12 DIMMs total) Max capacity: 96GB Maximum capacity: DDR3 800 across 3 channels Up to 3 DPC (18 DIMMs total) Max capacity: 144GB (DPC Dimms Per Channel) +274% 10.6 GB/s GB/s GB/s CPU CPU CPU 1333 MHz memory 1066 MHz memory 800 MHz memory Increase in Platform Bandwidth CPU CPU CPU CPUs X5550 and above E5520 and above All SKUs Nehalem-EP memory Bandwidth for different configuration Memory speed 800 MHz 1066 MHz 1333 MHz 1 DPC 2 DPC 3 DPC 1 DPC 2 DPC 1 DPC Stream Triad Source: Intel internal measurement March 2009 Performance tests and ratings are measured using specific computer systems and/or components and reflect the approximate performance of Intel products as measured by those tests. Any difference in system hardware or software design or configuration may affect actual performance. Buyers should consult other sources of information to evaluate the performance of systems or components they are considering purchasing. For more information on performance tests and on the performance of Intel products, visit Copyright 2009, Intel Corporation. * Other names and brands may be claimed as the property of others.

15 Market Leading Software Development Tools Compilers Libraries Analyzers Clusters Message Passing Multi- Threading Vectorization Optimization Performance Confidence Analysis Performance Compatibility Support Productivity CrossC ross-platform 15

16 DLR Intel: Tools Analysis Study for TAU Intel tools provided valuable insights into details of TAU MPI mapping is something to be aware of minimization strategies have paid off a little and might much more in more complex cases Tuning in SIMD direction (vectorization; current version hardly vectorizing) Intel is happy to further participate in the way indicated here 16

17 17 TAU with ITAC: zoom and understand

18 Comparison of mappings Default (round robin) Optimized 5% runtime gain! Default (intra node) 18

19 MPI Applications Sheet derived from ITAC Idea Collect a representative series of benchmarks for an app, including ITAC tracefiles With other tools, extract essential data answering on a high level questions like: - is the app MPI bound; is latency or bandwidth? - is the loadbalancing ok? - does it suffer from node architectural overheads? Do this by automatically feeding the data into a prepared Excel Sheet template which has a machinery implemented for various displays of the data 19

20 MPI Applications Sheet derived from ITAC Basic building block: breakdown of application run time into 4 colors physical MPI (library, interconnect) imbalance (idling in MPI; application intrinsic) per node architectural MP overhead (loss through multiple processes per node) pure calculation 20

21 MPI Applications Sheet derived from ITAC Nicely non-mpi bound TAU, WDC vs NHM single node MPI total (**) total (**) interconnect load imbalance calc_ovrh_node (*) calculation 400 Woodcrest NHM time (s) Scaling poor (1.35 in calc.) Scaling ok (factors 1.8 and 1.63 in calc) Node architectural overhead (memory.. FSB) P Node architectural overhead ncely (but not totally!) reduced Total result: per core, with full nodes, NHM 1.8x better 21

22 Summary Intel have thorouhgly benchmarked the new architecture Nehalem, with standard benchmarks and real applications, and in a large amount of cases observed an overall performance boost as compared to the predecessor architecture (very often ~ 2x per core) Almost always, the new memory architecture is responsible for these benefits A study with Intel tools has been performed for DLR s TAU code; besides a couple of generic tuning hints, a comparison of Woodcrest vs. Nehalem yielded a per core improvement of ~1.8x for TAU 22