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HS06 on last generation of HEP worker nodes Berkeley, Hepix Fall ‘09

This study compares the performance of last generation HEP worker nodes using the HS06 benchmark, Nehalem and Opteron processors, and various configurations such as hyperthreading, turbo mode, and overbooking. The analysis also includes power consumption measurements.

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HS06 on last generation of HEP worker nodes Berkeley, Hepix Fall ‘09

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  1. HS06 on last generation of HEP worker nodesBerkeley, Hepix Fall ‘09 INFN - Padova michele.michelotto at pd.infn.it

  2. 471.omnetpp 473.astar 483.xalancbmk 444.amd 447.dealII 450.soplex 453.povray Geometric average on 7 tests. Sum on all cores Sum on all Worker nodes HEP-SPEC06 Integer tests Floating Point tests michele michelotto - INFN Padova

  3. “old cpu” michele michelotto - INFN Padova

  4. Modern 4core processor • About 60 Measurement from Brunengo, Macorini, Crescente, Calzolari (all INFN), Srinivasan (LBNL), Iribarren (CERN), Alef (GridKa), PIC, RAL, Nikhef nehalem DC-QC Xeon michele michelotto - INFN Padova

  5. Measuring Nehalem • Phase space complicated • 32-64 bit • Hyperthreading ON - OFF • Memory (Size and number of channels) • Turbo Mode ON - OFF michele michelotto - INFN Padova

  6. The official HS06: 32bit • HS06 HT is on118.30 (16t)81.81(8t) michele michelotto - INFN Padova

  7. 64 bit • HS06 HT is on136.74 (16t)95.14(8t) michele michelotto - INFN Padova

  8. 32 vs 64 michele michelotto - INFN Padova

  9. Memory48GB (6x8)24GB (3x8)16GB (2x8) 64 bit 32 bit michele michelotto - INFN Padova

  10. HT OFF 32bit • With HT OFF I’d imagine saturation after 8th thread • Will HT OFF 1-8 = HT ON? michele michelotto - INFN Padova

  11. HT ON vs HT OFF HT ON:81.81HT OFF: 95.96HT OFF is better up to 11t michele michelotto - INFN Padova

  12. HT OFF 64bit At 64 bit: same behaviour Hepix Fall 09 michele michelotto - INFN Padova 12

  13. Turbo mode • Turn off the voltage on idle cores and overclock +133 MHz or even +266MHz the actives cores if temperature is ok • 5520 Default clock is 2266 MHz • 5520 3 of 4 core +1bin  2400 MHz • 5520 1 or 2 core +2bin  2533 MHz • New half-generation e.g. Xeon 3500 up to 4 bin michele michelotto - INFN Padova

  14. Turbo mode • Benefit of Turbo mode decrease when number of active core increase michele michelotto - INFN Padova

  15. Opteron 2427 32bit • HS06: 98.05 (12t) michele michelotto - INFN Padova

  16. Opteron 2427 – 64bit • HS06: 111.46 (12t) Hepix Fall 09 michele michelotto - INFN Padova 16

  17. Instanbul 2 x exacore • Opteron 2427 – 2200 MHz – 32GB • 2P x 6cores Hepix Fall 09 michele michelotto - INFN Padova 17

  18. Overbooking? • 5520 with HT OFF increased performance even after 8 cores • 2247 doesn’t show any drop with 12 cores fully loaded • What happens if we start overloading with more processes than cores?

  19. 5520(2266) vs 2427(2200) michele michelotto - INFN Padova

  20. 5520(2266) vs 2427(2200) Hepix Fall 09 michele michelotto - INFN Padova 20

  21. 5520(2266) vs 2427(2200) Hepix Fall 09 michele michelotto - INFN Padova 21

  22. Todo • Compare with Atlas and CMS code • GEN, SIM, DIGI and RECO • Effect of HT, Turbo Mode and Overbooking on Power Consumption

  23. Questions? michele michelotto - INFN Padova

  24. Nehalem “gainestown” • 45 nm • Cache L1 32+32 KB • Cache L2 256KB/core • Cache L3 8MB shared • 80W: E5502 1.86 GHz  E5540 2.53 GHz • 95W: X5550 2.66 GHz  X5570 2.93 GHz • Dual Thread (from 5520 upwards) • Turbo Mode • Quad core (excl. 5502 and 5508) michele michelotto - INFN Padova

  25. Opteron Instanbul 45 nm Cache L1 128 KB Cache L2 512KB/core Cache L3 6MB shared Power Consumption: EE: max 40W (1.8 GHz) HE: max 55W (2.0-2.1 GHz) Standard max 75W (2.2-2.6 GHz) SE max 105W (2.8GHz) Hepix Fall 09 michele michelotto - INFN Padova 25

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