Rendering Performance: Cinebench

Cinebench, based on MAXON's software CINEMA 4D, is probably one of the most popular benchmarks around, and it is pretty easy to perform this benchmark on your own home machine. The benchmark supports 64 threads, more than enough for our 24- and 32-thread test servers. First we tested single-threaded performance, to evaluate the performance of each core.

Cinebench 11.5 Single threaded

Single-threaded performance is relatively poor when you do not enable Turbo Core: with that setting the Opteron 6276 scores only 0.57. So the single-threaded FP performance is about 10% lower, probably a result of the higher FP/SSE latencies of the Interlagos FPU. However, the 6276 Opteron can boost the clock speed to 3.2GHz. This 39% clock speed boost leads to a 37% (!) performance boost. The difference with the older "Istanbul" based Opteron "Magny-cours" 61xx can only get larger once software with support for the powerful FMAC and AVX capable units is available. Also newer compilers will take the longer FP latencies into account and will probably boost performance by a few percent even without using FMAC or AVX.

Before we look at the Multi-threaded benchmark, Andreas Stiller, the legendary German C't Journalist ("Processor Whispers") sent me this comment:

"You should be aware that Cinebench 11.5 is using Intel openMP (libguide40.dll), which does not support AMD-NUMA"

So while Cinebench is a valid bench as quite a few people use the Intel OpenMP libraries, it is not representative of all render engines. In fact, Cinebench probably only represent the smaller part of the market that uses the Intel OpenMP API. On dual CPU systems, the Opteron machines run a bit slower than they should; on quad CPU systems, this lack of "AMD NUMA" awareness will have a larger impact.

Cinebench R11.5 MT

We did not expect that the latest Opteron would outperform the previous one by a large margin. Cinebench is limited by SSE processing power. The ICC 11.0 compiler was the fastest compiler of its time for SSE/FP intensive software, even for the Opterons (up to 24% faster than the competing compilers), but it has no knowledge of newer architectures. And of course, the intel compiler does favor the Xeons.

The Opteron 6200 has a total of eight dual issue (if you count only those pipes that do calculations) FPUs, while the Opteron 6100 has a total of 12 dual issue FPUs. The only advantage that the 6200 has (if you do not use the FMAC or AVX capabilities) is that it can interleave two FP threads on one module. So you get 16 FP threads that can dispatch one FP per clock versus 12 FP threads that can dispatch two FP per clock. That capability is especially handy when your threads are blocked by memory accesses. This is hardly the case in Cinebench (but it is probably the reason why Interlagos does so well in some HPC tests) and as a result, the Opteron 6276 cannot pull away from the Opteron 6174.

Anand reported that the best Core i7 (2600K, 4 cores/8 threads, 3.4GHz) achieves 6.86. So considering that a dual Opteron 6200 is cheaper than the dual Xeon, and more manageable than two workstations, such a renderfarm may make some sense.

Power Management in Windows Server 2008 SP2 Rendering Performance: 3DSMax 2012
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  • UberApfel - Wednesday, November 16, 2011 - link

    If anyone finds me a madman; let me explain this simply by example. Benchmark choices aside...

    If this test were to compare any of the top or middle-tier processors on the "AMD vs. Intel 2-socket SKU Comparison" chart ( http://www.anandtech.com/show/5058/amds-opteron-in... ) with their matching competition; this article would tell a different story in essence. Which does in fact, regardless of how fair the written conclusion may be, makes it biased.

    Examples:
    X5650 vs 6282 SE
    E5649 vs 6276
    E5645 vs 6272
  • JohanAnandtech - Thursday, November 17, 2011 - link

    "Yet handpicking the higher clocked Opteron 6276 (for what good reason?) seems to be nothing but an aim to make the new 6200 series seem un-remarkable in both power consumption and performance"

    Do you realize you are blaming AMD? That is the CPU they sent us.

    "The 6272 is cheaper, more common, and would beat the Xeon X5670 in power consumption which half this review is weighted on."

    The 6272 is nothing more than a lower speedbin of the 6276. It has the same power consumption but slightly lower performance. Performance/wat is thus worse.

    "PostgreSQL/SQLite? Facebook's HipHop? Node.js? Java? Something relevant to servers and not something obscure enough to sound professional? "

    We use Zimbra, Phpbb, Apache, MySQL. What is your point? that we don't include every server software on the planet? If you look around how many publications are running good repeatable server benchmarks? If it would be so easy as running Cinebench or Truecrypt, I think everybody would be.

    "Even the chart on Page 1 is designed to make Intel look superior all-around. For what reason would you exclude the Opteron 4274 HE (65W TDP) or the Opteron 4256 EE (35W TDP) from the 'Power Optimized' section?"

    To be honest, those CPUs were not even in AMD's presentation that we got. We were only briefed about Interlagos.
  • UberApfel - Thursday, November 17, 2011 - link

    Did they send you the Xeon X5670 also? I suppose who's ever handling media relations at AMD is either careless or disgruntled. eg. Sending a slightly overclocked processor with a 30% staple that happens to scale unusually bad in terms of power efficiency.

    Please just answer this honestly; if you had compared a Opteron 6272 w/ a E5645 ... would your article present a different story?

    Fair as you may have tried to be; you don't have to look far to find a comment here that came to the "BD is a joke" conclusion.

    ---

    Using a phpbb stress test is hardly useful or relevent as a server benchmark; nevermind under a VM. Unless configured extensively; it's I/O bound. "Average Response Time" is also irrelevant; how is the reader to know if your 'response time' does not favor processors better with single-threaded applications?

    Additionally; VM's on a better single-threaded processor will score higher in benchmarks due to the overhead as parallelism isn't optimized. Yet these results make zero sense in real-world usage. It contradicts the value of VM's; flexible scalability for low-usage applications.

    Finally; I'd estimate that less than 5% of servers are virtual (if that). VM's are most popular with web servers and even there they have a small market share as they only appeal to small clients. Large clients use clusters of dedicated; tiny clients use shared dedicated.

    Did you even use gcc 4.7 or Open64? In some applications; the new versions yield up to 300% higher performance for Bulldozer.
  • JohanAnandtech - Thursday, November 17, 2011 - link

    "if you had compared a Opteron 6272 w/ a E5645 ... would your article present a different story?"

    You want us to compare a $551 80W TDP Intel cpu with a $774 115 AMD CPU?

    "Unless configured extensively; it's I/O bound."
    We know how to monitor with ESX top. There is a reason why we have a disk system of 2 SDDs and 6 x 15k SAS disks.

    "Average Response Time" is also irrelevant
    Huh? That is like saying that 0-60 mph acceleration times are irrelevant to sports cars.

    "Finally; I'd estimate that less than 5% of servers are virtual (if that)"
    ....Your estimate unfortunately was true in 2006. We are 2011 now. Your estimate is 10x off, maybe more.
  • UberApfel - Thursday, November 17, 2011 - link

    "You want us to compare a $551 80W TDP Intel cpu with a $774 115 AMD CPU?"
    $539

    "The 6272 is nothing more than a lower speedbin of the 6276. It has the same power consumption but slightly lower performance. Performance/wat is thus worse."
    By your logic; the FX-8120 and FX-8150 have equal power consumption. They don't.

    "We know how to monitor with ESX top. There is a reason why we have a disk system of 2 SDDs and 6 x 15k SAS disks."
    It's still I/O bound unless configured extensively.

    "Huh? That is like saying that 0-60 mph acceleration times are irrelevant to sports cars."
    Yeah; it is if you're measuring the distance traveled by a number of cars. The opteron is obviously slower in handling single requests but it can handle maybe twice as many at the same time. Unless your stress test made every request @ T=0 and your server successfully qued them all, dropped none, and included the que time in the response time... it would favor the xeon immensely. Perhaps it does do all this; which is why I said "how is the reader to know" when you could have just as easily done 'Average Requests Completed Per Second'.

    "....Your estimate unfortunately was true in 2006. We are 2011 now. Your estimate is 10x off, maybe more."
    Very funny. Did the salesman that told you that also recommend these benchmarks? Folklore tells that Google alone has over a million servers, 20X that of Rackspace or ThePlanet, and they aren't running queries on VM's.
  • boomshine - Thursday, November 17, 2011 - link

    I hope you included MS SQL 2008 performance just like in opteron 6174 review:

    http://www.anandtech.com/show/2978/amd-s-12-core-m...
  • JohanAnandtech - Thursday, November 17, 2011 - link

    Yes, that test failed to be repeatable for some weird reason. We will publish it as soon as we get some reliable numbers out of it.
  • JohanAnandtech - Thursday, November 17, 2011 - link

    "SMT can only execute a single thread at once. "

    The whole point of SMT is to have one thread in one execution and another thread in the other execution slot.

    In fact, the very definition of SMT is that two or more threads can execute in parallel on a superscalar execution engine.
  • TC2 - Thursday, November 17, 2011 - link

    another joke from AMD with their BD "server-centric" architecture - bla-bla! amd 8\16 against intel 6\12 and again can't win!
  • pcfxer - Thursday, November 17, 2011 - link

    " make of lots of DLLs--or in Linux terms, they have more dependencies"

    Libraries is the word you're looking for.

    I also see the mistake of mixing programming APIs/OS design/Hardware design...

    Good software has TLBs, asynchronous locking where possible, etc, as does hardware but they are INDEPENDENT. The glue as you know, is how compiled code is treated at the uCode level. IMO, AMD hardware is fully capable of outperforming Intel hardware, but AMD uCode is incredibly good.

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