可编程以太网设备（想想板载CPU）真的存在吗？
我从很多人那里听说可编程以太网卡是存在的并且很容易获得。然而，我还没有找到这些神秘设备中的一个，所以我想知道它们是否只是一个神话。
这种可编程卡具有千兆位以太网接口、可编程CPU并通过PCI Express连接到主机系统。这些卡解决的问题领域是低延迟网络应用程序，其中卡本身完成工作并向操作系统“报告”。基本上，该卡充当协处理器并处理卡上的所有低延迟要求，从而避免在用户域中编写低延迟代码的问题 - 认为响应时间为 0.4ms - 0.5ms。
所以我的问题是，这些卡真的存在吗？如果存在，我在哪里可以获得一张？
I've heard from various people that programmable Ethernet cards exist and are easily available. However I have yet to be able to track down one of these mythical devices so I'm wondering if they're just that - a myth.
Such a programmable card has a gigabit Ethernet interface, has a programmable CPU and connects to the host system via PCI Express. The problem area these cards address are low latency network applications where the card itself does the work and "reports back" to the operating system. Basically the card acts as a co-processor and handles all the low latency requirements on the card, thus avoiding the issues of writing low latency code in user-land - think 0.4ms - 0.5ms response times.
So my question is, do these cards really exist and if so, where can I get my hands on one?
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AdvancedIO 具有双路和四路可编程 10 gbe PCI Express 卡。这些卡面向超低延迟和线速应用（高频交易、军事和电信）。他们使用 FPGA 代替 CPU，因为 FPGA 延迟较低并且可以实时处理大量数据。
如果您想了解有关这些卡的更多信息，您可以访问：
http://www.advancedio.com/products/form-factor/pci- express/
如果您想了解更多有关申请的信息，您可以访问：http://www .advancedio.com/markets/financial/ 或浏览网站上的不同市场。
这些卡附带一个开发框架，以方便应用程序的开发。
祝你好运
AdvancedIO has dual and quad programmable 10 gbe PCI Express cards. These cards are geared toward ultra-low latency and line rate applications (high frequency trading, military and telecom). They use FPGAs instead of CPUs because FPGAs have lower latencies and can handle large amount of data in real time.
If you want more information on these cards, you can go to:
http://www.advancedio.com/products/form-factor/pci-express/
If you want more information about applications, you can go to: http://www.advancedio.com/markets/financial/ or browse the different Markets on the web site.
These cards come with a development framework to facilitate the development of applications.
Good luck
RNet 技术拥有用户可编程 NIC，即软件可编程，而不是基于 FPGA（硬件可编程）的高级 I/O 卡。
RNet technologies has a user-programmable NIC, that is software programmable, rather than Advanced I/O cards that are FPGA based (HW programmable).
Bigfoot Networks 生产一系列“智能”NIC 产品（他们的 Killer 系列）：例如 杀手2100。
乍一看并不清楚他们当前的产品是否是用户可编程的。但是，对他们的遗留产品的审查表明您至少能够将专门的“应用程序”加载到卡上。
Bigfoot Networks makes a series of products (their Killer line) that are "smart" NICs: e.g. the Killer 2100.
It's not clear at a glance whether their current products are user-programmable. However, a review of a legacy product of theirs suggests that you were able to load specialized "apps" onto the cards, at least.