IBM Power Systems 8001-22C, Manual

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Installing a graphics processing unit in the 8001-22C system
Learn how to install a graphics processing unit in the IBM Power System S822LC for Big Data (8001-22C)
system.
Before you begin
Power off the system and place it in the service position. For instructions, see “Preparing the 8001-22C or
8005-22N system to remove and replace internal parts” on page 92.
About this task
Notes for thermal limitations:
v
If the 8001-22C system has no GPUs, the system can support up to twelve 3.5-inch drives. The ambient
temperature must not be more than 35°C (95°F). If all twelve 3.5-inch drives are installed, the system
limits the 10-core POWER8 processor to 234 W and the 8-core POWER8 processor to 204 W.
v Limitation on the number of supported drives if the 8001-22C system has one or two GPU accelerators
(feature code EKAJ or EKAZ):
– If your 8001-22C system with feature code EKB1 or EKB5 has feature code EKAJ or EKAZ, and if
the system has storage adapters (feature codes EKEA or EKEB), the system can support up to eight
3.5-inch drives. The drives must be installed into the bottom two drive bay rows. The drives cannot
be installed into the top drive bay row.
– If your 8001-22C system with feature code EKB1 or EKB5 has feature code EKAJ or EKAZ, but has
no storage adapters, the system can support up to six 3.5-inch drives. The drives must be installed
into the bottom two drive bay rows in the leftmost positions. The drives cannot be installed into the
top drive bay row nor into the rightmost positions.
– The ambient temperature must not be more than 25°C (77°F). Reduce the maximum allowable
dry-bulb temperature 1°C per 175 m above 950 m. IBM recommends a temperature range of 18°C -
27°C (64°F - 80.6°F). The system limits the 8-core POWER8 processor to 240 W.
– The default Linux governor is “on-demand”, which results in the CPU going to turbo frequency
when the workload demands and the power and cooling parameters allow. The CPU can require up
to 250W at turbo frequency and high utilization. For the cases described here which show less than
250W cooling capability, you might see the indicator “Performance Lags” in the system event log,
when running a demanding workload in “on-demand” mode. That means that the maximum turbo
frequency cannot be held all the time.
Procedure
1.
Attach the electrostatic discharge (ESD) wrist strap.
Attention:
v Attach an electrostatic discharge (ESD) wrist strap to the front ESD jack, to the rear ESD jack, or to
an unpainted metal surface of your hardware to prevent the electrostatic discharge from damaging
your hardware.
v When you use an ESD wrist strap, follow all electrical safety procedures. An ESD wrist strap is
used for static control. It does not increase or decrease your risk of receiving electric shock when
using or working on electrical equipment.
v If you do not have an ESD wrist strap, just prior to removing the product from ESD packaging and
installing or replacing hardware, touch an unpainted metal surface of the system for a minimum of
5 seconds.
2.
A GPU adapter can share a PCIe riser card with other adapters. Systems with one processor can have
a GPU in position 3. Systems with two processors can have GPUs in positions 3 and 5. Position 3 is
preferred for optimal cooling. Label and remove any cables and plugs that extend out of the adapters.
See Figure 11 on page 18.
Installing and configuring the system
17