active_cu_number
  The number of CUs that are active on the system.  The number of active
  CUs may be less than SE * SH * CU depending on the board configuration.

CP
  Command Processor

CPLIB
  Content Protection Library

CU
  Compute Unit

DFS
  Digital Frequency Synthesizer

ECP
  Enhanced Content Protection

EOP
  End Of Pipe/Pipeline

GART
  Graphics Address Remapping Table.  This is the name we use for the GPUVM
  page table used by the GPU kernel driver.  It remaps system resources
  (memory or MMIO space) into the GPU's address space so the GPU can access
  them.  The name GART harkens back to the days of AGP when the platform
  provided an MMU that the GPU could use to get a contiguous view of
  scattered pages for DMA.  The MMU has since moved on to the GPU, but the
  name stuck.

GC
  Graphics and Compute

GMC
  Graphic Memory Controller

GPUVM
  GPU Virtual Memory.  This is the GPU's MMU.  The GPU supports multiple
  virtual address spaces that can be in flight at any given time.  These
  allow the GPU to remap VRAM and system resources into GPU virtual address
  spaces for use by the GPU kernel driver and applications using the GPU.
  These provide memory protection for different applications using the GPU.

GTT
  Graphics Translation Tables.  This is a memory pool managed through TTM
  which provides access to system resources (memory or MMIO space) for
  use by the GPU. These addresses can be mapped into the "GART" GPUVM page
  table for use by the kernel driver or into per process GPUVM page tables
  for application usage.

IH
  Interrupt Handler

HQD
  Hardware Queue Descriptor

IB
  Indirect Buffer

IP
    Intellectual Property blocks

KCQ
  Kernel Compute Queue

KGQ
  Kernel Graphics Queue

KIQ
  Kernel Interface Queue

MEC
  MicroEngine Compute

MES
  MicroEngine Scheduler

MMHUB
  Multi-Media HUB

MQD
  Memory Queue Descriptor

PPLib
  PowerPlay Library - PowerPlay is the power management component.

PSP
    Platform Security Processor

RLC
  RunList Controller

SDMA
  System DMA

SE
  Shader Engine

SH
  SHader array

SMU
  System Management Unit

SS
  Spread Spectrum

VCE
  Video Compression Engine

VCN
  Video Codec Next