Lenovo NeXtScale nx360 M5 Compute Node - GPU configuration in the 2U GPU tray

The following table displays the GPU configuration in the 2U GPU tray.

Note: Use only GPU adapters of the same type in the 2U GPU tray.

Table 1. GPU configuration in the 2U GPU tray S: Support.
Two column table documenting the number of installed GPU adapter population sequence.
	Intel 7120p (300W)				nVidia K80 (300W)				nVidia K40 (235W)				nVidia K2 (225W)
GPU Qty	4	3	2	1	4	3	2	1	4	3	2	1	4	3	2	1
Ambient (°C)	25		30		27		30		30		30		30		30
Altitude (meter)	900		900		900		900		900		900		900		900
Front HDD thickness (mm)	<= 9 mm		<= 15 mm		<= 9 mm		<= 15 mm		<= 15 mm		<= 15 mm		<= 15 mm		<= 15 mm
GPU-to-GPU Traffic Optimized Mode disabled with 2 microprocessors	S		S		S		S		S		S		S		S
GPU-to-GPU Traffic Optimized Mode enabled with 2 microprocessors	No		S		No		S		S		S		No	S	S
GPU-to-GPU Traffic Optimized Mode enabled with 1 microprocessor	No		S		No		S		S		S		S		S

There are 2 options supported for 2U GPU tray. The options will only be available when 2 microprocessors and 2U GPU tray installed.

Enable GPU-to-GPU Traffic Optimized Mode

If this option is enabled, the first microprocessor is able to support three or more GPU adapters with the internal PCIe bridge cable.
Disable GPU-to-GPU Traffic Optimized Mode

If this option is disabled, each microprocessor is able to support two GPU adapters when both microprocessor are installed.
Note: The default GPU-to-GPU Traffic Optimized Mode is enabled. If the GPU-to-GPU Traffic Optimized Mode is disabled, the PCIe bridge cable (see Parts listing, Lenovo NeXtScale nx360 M5 compute node for the FRU part number) must be removed.