使用NVIDA卡进行CUDA，使用主板进行视频
我想使用主板作为主显示适配器，使用 NVIDIA 显卡作为专用 CUDA 处理器。我的第一个想法是简单地将显示器的 VGA 电缆插入主板的 VGA 端口，并希望 BIOS 足够智能，能够在启动时使用板载视频作为显示适配器。那行不通。 BIOS 一定已检测到 NVIDIA 卡并继续将其用作显示适配器。接下来我寻找的是 BIOS 中的一个设置，告诉它“不要使用 NVIDIA 560 作为显示适配器，使用板载视频作为显示适配器”。我搜索了 BIOS 和网络，但要么无法完成，要么我不知道如何做到这一点。主板是BIOSTAR TH67+ LGA 1155。 Windows 7 操作系统。
结果摘要（来自下面提供的答案） 在 BIOS 中启用集成显卡设备 (IGD) 将允许系统由板载显卡驱动，即使显卡连接到系统总线也是如此。但是，该显卡不能用于 CUDA 处理。除非连接了显示器，否则 Windows 将不会启用图形设备。普通的驱动程序堆栈看不到它们。解决方案：使用Linux，或者将显示器连接到显卡但不使用它。 Tesla 卡（仅 GPGPU）不会被 Windows 识别为图形设备，因此它们不会受到此问题的影响。
此外，较新的 BIOSTAR 主板 TZ68A+ 支持 Virtu 驱动程序，该驱动程序允许同时使用图形卡和板载视频。
I want use the motherboard as the primary display adapter and my NVIDIA graphics card as a dedicated CUDA processor. My first thought was to simply plug the monitor's VGA cable into the motherboard's VGA port and hope the BIOS was smart enough to use the on-board video as the display adapter when it booted. That didn't work. The BIOS must have detected the NVIDIA card and continued to use it as the display adapter. The next thing I looked for was a setting in the BIOS to tell it "don't use the the NVIDIA 560 as the display adapter, use the on-board video as the display adapter". I search through the BIOS and the Web, but either this cannot be done or I cannot figure out how to do it. The mobo is a BIOSTAR TH67+ LGA 1155. Windows 7 OS.
RESULTS SUMMARY (from answers provided below)
Enabling the Integrated Graphics Device (IGD) in the BIOS will allow the system to be driven from the on-board graphics even with the graphics card connected to the system bus. However, the graphics card cannot be used for CUDA processing. Windows will not enable graphics devices unless a monitor is attached to them. The normal driver stack cannot see them. Solution: use Linux, or attach a display to the graphics card but do not use it. The Tesla cards (GPGPU-only) are not recognized by Windows as graphics devices, so they don't suffer from this.
Also ,a newer BIOSTAR motherboard, the TZ68A+, supports the Virtu drivers which permit sophisticated simultaneous use of the graphics cards and on-board video.
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查看 BIOS 手册（ .zip)，您可能需要的设置是 Chipset ->北桥->启动图形适配器。尝试将其设置为IGD（集成显卡设备）。
Looking at the BIOS manual (.zip), the setting you probably want is Chipset -> North Bridge -> Initiate Graphics Adapter. Try setting it to IGD (Integrated Graphics Device).
我相信这会自动发生，因为本机视频不支持 CUDA。安装SDK后，如果运行DeviceQuery，是否会看到多个结果？
I believe this will happen automatically as the native video won't support CUDA. After installing the SDK, if you run DeviceQuery, do you see more than one result?
我相信 h67 允许集成和集成共存。专用GPU。在此处查看 Lucid Virtu http://www.lucidlogix.com/driverdownloads-virtu.html 它允许动态切换 GPU。但不知道是否影响CUDA设备查询。
我从来没有在我的设备上尝试过它，因为它是 x58，我只是从 tomshardware 那里听说的。尝试一下并告诉我们。 Lucid Virtu 绝对值得一试，它免费，而且可以节省你的电费。
I believe h67 allows coexistence of both integrated & dedicated GPU. Check out Lucid Virtu here http://www.lucidlogix.com/driverdownloads-virtu.html it allows switching GPUs on the fly. But I don't know if it affects CUDA device query.
I never tried it on my rig, because its x58, I just heard it from tomshardware. Try it out and let us know. Lucid Virtu is definitely worth a try, its free, and it can cut you electric bill.