Dell PowerEdge C410x - Manual (Page 10)

Introduction | 10
iii. Power up the host server.
iv. Repeat for each host server connected to the C410x.
b. Power Down Sequence:
i. Power down the host server.
ii. Wait for the host server to power off.
iii. Power down the PCI cage(s) associated with the iPass port connected to the C410x.
NOTE: The PCI cage power can be removed by pressing the cage power button
or using IPMITool commands identified in the “Using the C410x Base Board
Management Controller” document.
iv. Wait for the Green power LEDs on the cage(s) to turn off.
v. Repeat for each host serve connected to the C410x.
Supported GPGPU Configurations
The C410x supports installing different GPGPU and other devices in the chassis.
Mixing different GPGPUs connected to the same host server is not supported. All GPGPUs connected to a
host server must be the same type.
Mixing other devices with GPGPUs connected to the same host server is supported.
GPGPU Support Limitation
There are some host servers that have multiple PCIex16 expansion slots. This allows multiple Host
Interface Cards (HIC) to be installed in a single host server. The flexibility of the C410x system allows 16
GPGPUs to be connected to a single host server with multiple PCIex16 expansion slots. Host servers that
are based on x86 architecture have a 16 bit (total 64 K) IO address space hardware limit. The 16 bit IO
address space hardware limit limits the number of PCI devices that can be connected to the host server.
The host server does not boot or other POST errors occur if the IO address space limit is exceeded. The
number of onboard host server PCI devices utilize a fixed amount of IO address space. The remaining IO
address space is used to determine the number of GPGPU that can be installed in a C410x that is
connected to the single host server. Each GPGPU requires 4K of IO address space. The number of
onboard PCI devices plus the number of GPGPUs determine the amount of IO address space used.
Therefore, the 16 bit IO address space limitation does not allow a single host server to support 16
GPGPUs installed in a C410x.
InfiniBand (IB) Support Limitation
Host servers will not support more than one IB card installed in a C410x.
If more than one IB card is installed in a C410x and connected to a single host server issues may be
observed.
Checklist
Carefully unpack the Dell PowerEdge C410X server and check that the following items were included.
• One Dell PowerEdge C410X system
• Dell PowerEdge C410x Getting Started Guide
• Safety, Environmental, and Regulatory Information (SERI)
• Warranty and Support Information (WSI) or End User License Agreement (EULA)