LS-DYNA

LS-DYNA is a "general purpose structural and fluid analysis simulation software package capable of simulating complex real world problems", developed by the Livermore Software Technology Corporation (LSTC). It is used by the automobile, aerospace, construction, military, manufacturing and bioengineering industry. Even simple simulations take hours to complete, so even a small performance increase results in tangible savings. Add to that that many of our readers have been asking that we perform some benchmarking with HPC workloads. So reasons enough to include our own LS-DYNA benchmarking.

These numbers are not directly comparable with AMD's and Intel's benchmarks as we did not perform any special tuning besides using the message passing interface (MPI) version of LS-DYNA ( ls971_mpp_hpmpi ) to run the LS-DYNA solver to get maximum scalability. This is HP-MPI version of LS-DYNA 9.71.

Our first test is a refined revised  Neon crash test simulation.

LS-Dyna Neon-Refined Revised

This is one of the few benchmarks (besides SAP) where the Opteron 6276 outperforms the older Opteron 6174 by a tangible margin (about 20% faster) and is significantly faster than the Xeon 5600, by 40% to be more precise. However, the direct competitor of the 6276, the Xeon E5-2630, will do a bit better (see the E5-2660 6C score). When you are aiming for the best performance, it is impossible to beat the best Xeons: the Xeon E5-2660 offers 26% better performance, the 2690 is 46% faster. It is interesting to note that LS-Dyna does not scale well with clockspeed: the 32% higher clockspeed of the Xeon E5-2690 results in only a 15% speed increase.

A few other interesting things to note: we saw only a very smal performance increase (+5%) due to Hyperthreading. Memory bandwidth does not seem to be critical either, as performance increased by only 6% when we replaced DDR3-1333 with DDR3-1600. If LS-Dyna was bottlenecked severely by the memory speed we should have seen a performance increase close to 20% (1600 vs 1333).

CMT boosted the Opteron 6276's performance by up to 33%, which seems weird at first since LS-DYNA is a typical floating point intensive application. As the shared floating point "outsources" load and stores to the integer cores, the most logical explanation is that LS-DYNA is limited by the load/store bandwidth. This is in sharp contrast with for example 3DS Max where the additional overhead of 16 extra threads slowed the shared FP down instead of speeding it up.

Also, both CPUs seem to have made good use of their turbo capabilities. The AMD Opteron was running at 2.6 GHz most of the time, the Xeon 2690 at 3.3 GHz and the Xeon 2660 at 2.6 GHz.

The second test is the "Three Vehicle Collision Test" simulation, which runs a lot longer.

LS-Dyna Three Vehicle Collision Test

The three vehicle collision test does not change the benchmarking picture, it confirms our early findings. The Opteron Interlagos does well, but the Xeon E5 is the new HPC champion.

Blender and 3DS Max Compression and Encryption
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  • Alexko - Tuesday, March 06, 2012 - link

    It's not "like spam", it's just plain spam at this point. A little ban + mass delete combo seems to be in order, just to cleanup this thread—and probably others. Reply
  • ultimav - Wednesday, March 07, 2012 - link

    My troll meter is reading off the charts with this guy. Reading between the lines, he's actually a hardcore AMD fan trying to come across as the Intel version of Sharikou to paint Intel fans in a bad light. Pretty obvious actually. Reply
  • JohanAnandtech - Wednesday, March 07, 2012 - link

    We had to mass delete his posts as they indeed did not contain any useful info and were full of insults. The signal to noise ratio has been good the last years, so we must keep it that way.

    Inteluser2000, Alexko, Ultimav, tipoo: thx for helping to keep the tone civil here. Appreciate it.

    - Johan.
    Reply
  • tipoo - Wednesday, March 07, 2012 - link

    And thank you for removing that stuff. Reply
  • tipoo - Tuesday, March 06, 2012 - link

    We get it. Don't spam the whole place with the same post. Reply
  • tipoo - Tuesday, March 06, 2012 - link

    No, he's just a rational persons. I don't care which company you like, if you say the same thing 10 times in one article someones sure to get annoyed and with justification. Reply
  • MySchizoBuddy - Tuesday, March 06, 2012 - link

    I'm again requesting that when you do the benchmarks please do a Performance per watt metric along with stress testing by running folding@home for straight 48hours. Reply
  • think-ITB-live-OTB - Tuesday, March 06, 2012 - link

    Can i ask you a question? do you at least get paid when you bend over for Intel?

    These are Server Chips - who cares about single-threaded application performance.. or Corporate IPOs. AMD has delivered far greater TCO/performance than Intel has for at least a Decade and running.

    You want to praise a company like a Deity? ARM Holdings. nuff said. They can design a 35 dollar computer that can decode H.264 better than Intel can on SoCs that run 4x's the price. Currently have more Chips in more devices than in Intels entire history and Push Power envelopes far beyond anything Intel could ever muster.

    Just you wait before the Storm ARM and its Licensees unleash as it will eventually take over ALL markets including the Server space (Calxeda much?). Oh and as for Apple. (an ARM Licensee itself... i can see them moving to in-house ARM designs pretty soon). 4-6-8 Core Cortex A15 (with A7 core for low power iPod/tablet sync) Macbook Airs anyone?

    Intel is becoming the strongest of the Dinosaurs. But even the T-Rex fell eventually.
    Reply
  • swizeus - Wednesday, March 07, 2012 - link

    We have been using the Flemish/Dutch Web 2.0 website Nieuws.be as a benchmark for some time. 99% of the loads on the database are selects and about 5% of them are stored procedures.

    The database is loaded 104%. is it possible ?
    Reply
  • JohanAnandtech - Wednesday, March 07, 2012 - link

    Stored procedures can contain selects :-) Reply

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