XenDesktop和NVIDIA GRID K1性能不佳

我虽然Revit使用的是没有杠杆的Cuda，除非你通过GPU直通模式而不是使用vGPU。



以下为原文

I though Revit uses Cuda which isn't leveraged unless you go via GPU passthrough mode as opposed to using a vGPU.

您是否在禁用帧速率限制器的情况下运行基准测试？
（vGPU发行说明，第9页）
vGPU配置文件都限制为最大60fps，甚至是x80Q配置文件，因此任何使用帧速率作为其最终结果的因素的基准测试都将受此影响。
此外，您只提供了VM 2 vCPU。
最佳实践至少为4，您必须允许HDX编码（ctxgfx.exe），当预期向客户端提供30-60fps时，将消耗整个vCPU。
您正在尝试在单个vCPU上运行操作系统和应用程序。
由于Revit是CPU密集型的，因此请为其提供更多vCPU。
最后......虽然你有10K驱动器，但有多少其他VM正在同时访问这些驱动器而影响IO队列？
您是否实施了任何IO加速技术来抵消在同一驱动器上有多个VM的事实？
当您转向多虚拟机测试和生产使用时，这将发挥更大作用。



以下为原文

Did you run the benchmark with the Frame Rate Limiter disabled? (vGPU release notes, page 9)

vGPU profiles are all limited to a max of 60fps, even the x80Q profile, so any benchmark that uses frame rate as a factor in it's final result will be affected by this.

Also, you've only given the VM 2 vCPU's. Best practice is minimum of 4, you have to allow for the HDX encoding (ctxgfx.exe) which when expected to deliver 30-60fps down to the client will consume a whole vCPU. You're effectively trying to run the OS and the applications on a single vCPU.

Since Revit is CPU intensive, give it more vCPU's.

And finally... Though you have 10K drives, how many other VM's are accessing these drives at the same time affecting the IO queue? Have you implemented any IO acceleration technologies to offset the fact that you'll have multiple VM's on the same drives? This will come into play much more when you move to multi vm testing and production usage.

嗨，大家好，
谢谢你的回复。
关于CUDA核心和revit是真的吗？
我将尝试禁用Frame Rate Limited并查看其功能。
我实际上给了VM 8 vCPU。
它只是作为2个插座与4核心呈现。
我认为Windows不能超过2个插槽？
我试着给它6个插座，每个插座有2个核心，但它仍然只显示2个4核的插座。
我们目前没有任何IO加速，但是我们目前只运行一个虚拟机来测试最大可能的性能，这就是为什么到目前为止我们对结果感到有些惊讶。
即使我将台式机远程连接到带有k600卡的机器，也比通过XenDesktop连接到VM要好得多。
我已经遵循了所有的建议，所以我认为我没有做过可能导致性能如此之低的事情。
我读过的大多数用例和我看过的视频都非常积极。
也许我的期望太高了？
您是否期望其中一个具有规格的XenDesktop VM与其中一个桌面相同？
我知道它只有一张GRID K1卡，但型号只有~100mb，台式机使用k600。



以下为原文

Hi Guys,

Thanks for your replies.

Is that true regarding CUDA cores and revit?

I'll have a try with the Frame Rate Limited disabled and see what it does.

I've actually given the VM 8 vCPU's. It's just presented as 2 sockets with 4 cores. Windows can't have more than 2 sockets I thought? I tried to give it 6 sockets with 2 cores each but it still only displays 2 sockets with 4 cores.

We don't have any IO acceleration at the moment, however we are running just one virtual machine at the moment to test the maximum possible performance, which is why we've been a bit startled with the results so far.

Even when I remote desktop to a machine with a k600 card, the experience is much better than connecting to the VM via XenDesktop. I've followed all the recommendations so I don't think I've done something that could cause the performance to be so low. The majority of the use cases I've read and videos I've watched are all really positive.

Perhaps my expectations are too high? Would you expect one of the XenDesktop VM's with the specs to be on par with one of the desktops? I know its only a GRID K1 card, but the models are only ~100mb and the desktops use a k600.

vCPU很好，我误读了你的配置只是2个vCPU不是2个4核心。
Revit不使用CUDA，因此您不需要直通。
尽管尝试它没有任何害处，但请确保切换出驱动程序。
直通中的K1与K600的GPU相同，但内存更多，因此GPU性能将类似。
K180Q有效地为您提供与passtrhough相同的性能，但是由于vGPU的灵活性，您必须考虑到FRL。
XenDesktop / XenApp目前无法通过HDX发送超过60fps的数据，但它确实偏好了基准测试。
因此，简而言之，如果移除FRL不会使您的结果与K600驱动的工作站保持一致，那么我将关注其余的配置。



以下为原文

vCPU's fine then, I mis read your config as just 2 vCPU's not 2 with 4 cores.

Revit doesn't use CUDA, so you don't need passthrough. Though there would be no harm in trying it, just make sure you switch out the drivers.

The K1 in passthrough is the same GPU as the K600, but with more memory so the GPU performance will be similar. The K180Q effectively gives you the same performance as passtrhough, but with the flexibility of vGPU, however you do have to account for the FRL. XenDesktop/XenApp can't currently send more than 60fps via HDX, but it does skew benchmarks..

So, in short if removing the FRL doesn't bring your results back in line with the K600 powered workstation, I'd be looking at the rest of the configuration.

嗨Max
你的服务器硬件和生成是什么？
您是否正在运行最新的BIOS和固件，并且已经完全优化了服务器上的硬件BIOS，以获得“最佳性能”，默认为“平衡”（CPU，内存，电源管理和冷却......全部启动
到最大！）？
在XenServer中，您是否将其修改为“性能模式”并启用了“Turbo模式”？
性能模式：/ opt / xensource / libexec / xen-cmdline --set-xen cpufreq = xen：performance
Turbo模式：xenpm enable-turbo-mode
运行这两个后重新启动XenServer
关于I / O加速，如果您只在10k磁盘上运行（即使在具有1个VM的RAID1中），您也希望能够更快地开始工作（是的，我确实注意到您是标准桌面运行的
7.2k磁盘:-)）。
看看像Atlantis（在XenServer上工作得很好）或Fusion I / O（取决于你的服务器硬件）（或两者;-)）并开始运行Flash的东西，它对整体体验和评估产生巨大影响
套件/许可证显然不会花费太多/任何东西。
只是出于兴趣，当您查看基准时，您实际看到的内容与基准测试的FPS相关联（FPS是否与显示质量相匹配）？
或者您是否看到高FPS但用户体验不匹配？
您是否尝试过其他基准测试，如果可以，那么与PC相比的结果是什么？
：
NVIDIA演示 -  http://www.nvidia.co.uk/coolstuff/demos
Unigine Valley  -  https://unigine.com/products/valley/
Unigine Heaven  -  https://unigine.com/products/heaven/
Redway Turbine（不是手表） -  http://www.redway3d.com/gallery/demos/
许多其他显然是可用的，但这些只是非常快速安装.exe非常快速测试。
此外，在物理PC上安装相同的基准测试以获得参考/比较/基线。
你是如何访问虚拟机的？
您使用的是瘦客户端吗？
PC？
笔记本电脑？
什么尺寸的屏幕和你有多少？
另外，你在屏幕上运行的分辨率是多少？
可能是所有这一切中最重要的一个......你的网络速度是什么（后端还是桌面）？
您是否通过WAN访问VM？
是公共的还是私人的？
您是否有适当的带宽优化？
（Citrix Branch Repeater或其他）。
任何限制吞吐量的交换机或防火墙？
不要低估你的带宽要求！
这是我们看到的最常见问题之一。
现在生成高FPS并且通常具有出色的用户体验非常简单！
（感谢NVIDIA！:-)）。
然而，即使使用HDX或PCoIP，在网络中获得所有这些（大多数设计都没有考虑高端图形，视频和媒体）也证明是最具挑战性的事情。
有一些事情要研究，希望有所帮助
问候
本



以下为原文

Hi Max

What's your server hardware and generation? Are you running the latest BIOS and Firmware and have you fully optimized the hardware BIOS on the server(s) for "Maximum Performance" from the default of "Balanced" (CPU, Memory, Power Management and Cooling... Turn it all up to Maximum!)? In XenServer, have you modified it to "Performance Mode" and enabled "Turbo Mode"?

Performance Mode: /opt/xensource/libexec/xen-cmdline --set-xen cpufreq=xen:performance

Turbo Mode: xenpm enable-turbo-mode

Reboot XenServer after running both of these

Regarding I/O Acceleration, if you're only running on 10k disks (even in a RAID1 with 1 VM), you'll want to get your hands on something much faster (Yes, I did notice you're standard desktop runs a 7.2k disk :-) ). Look to someone like Atlantis (Works very well on XenServer) or Fusion I/O (depending on your server hardware) (or both ;-) ) and start running stuff out of Flash, it makes a huge difference to the overall experience and evaluation kit / licenses obviously won't cost much / anything.

Just out of interest, when you look at the benchmarks, does what you're actually seeing correlate to the FPS the benchmark is telling you (does the FPS match the quality of the display)? Or are you seeing high FPS but the user experience isn't matching it?

Have you tried other benchmarks and if so what were the comparable results with that of the PC? :

NVIDIA Demos - http://www.nvidia.co.uk/coolstuff/demos

Unigine Valley - https://unigine.com/products/valley/

Unigine Heaven - https://unigine.com/products/heaven/

Redway Turbine (not Watch) - http://www.redway3d.com/gallery/demos/


Many others are obviously available, but these are just really quick installable .exe so very fast to test. Also, install the same benchmarks on your physical PC to get a reference / comparison / baseline.

How are you accessing the VM? Are you using a Thin Client? PC? Laptop? What size screens and how many do you have? Also, what resolution are you running on your screens?

Probably the most important one of all this... What is your network speed (back end and also to desk)? Are you accessing your VM over a WAN? Is it Public or Private? Do you have any bandwidth optimization in place? (Citrix Branch Repeater or other). Any switches or firewalls restricting throughput?

Don't under estimate your bandwidth requirements! This is one of the most common issues we are seeing. Generating high FPS and generally a great user experience is now pretty easy! (Thanks NVIDIA! :-) ). However, getting all that across the network (most of which were not designed with high end graphics, video and media in mind) is proving to be the most challenging thing, even with HDX or PCoIP.

A few things there to look into, hope that helps a little

Regards

Ben