Glossaries

Keyword	Description
ACK	Acknowledge
AM	Active Message
AMO	Atomic Memory Operation
ANL	Argonne National Laboratory
AZP	Azure Pipeline
bcopy	Buffered copy
Bistro	Binary Instrumentation
BTL	Open MPI’s Byte Transfer Layer
CM	Connection Manager
CMA	Linux Kernel Cross Memory Attach
CQ	Completion Queue (InfiniBand)
CQE	Completion Queue Entry (InfiniBand)
csmock	static analysis tools
CUDA	Compute Unified Device Architecture (NVIDIA)
DC	Dynamically Connected transport (Mellanox/Nvidia InfiniBand)
DPM	Direct Packet Mode
EP	EndPoint
FC	Flow Control
FD	File Descriptor
GDR	GPUDirect RDMA
gtest	Google Test
HPC	High Performance Computing
HWTM	HardWare Tag Matching
IB	InfiniBand
iface	Interaface
IPC	Inter Process Communication
JUCX	Java API over UCP
KLM	A new sophisticated way of creating memory regions (Mellanox)
KNEM	Inria’s Kernel module for process to process zero copy (https://knem.gitlabpages.inria.fr)
LDPM	Legacy DPM
LLNL	Lawrence Livermore National Laboratory
madvise	give advice about use of memory. See madvise(2)
MD	Memory Domain
MEMH	Memory Handle
MLX	Mellanox Technologies
mlx5	Mellanox-5 generation of Mellanox device driver
MM	Memory Mapper
MP-XRQ	Multi-Packet XRQ
MPI	Message Passing INterface
MPICH	ANL MPI Implementation
MTT	The MPI Testing Tool
NAK	Negative Acknowledge
NB	Non blocking operations
NBI	Non blocking implicit
NBX	Non blocking extended
ODP	OnDemand Paging
OFA	OpenFabrics Alliance
OMPI	OpenMPI
OOB	Out of band / Out of box
OOO	Out of Order
OPA	Omni-Path Architecture
Open MPI	A MPI Implementation
ORNL	Oak Ridge National Laboratory
PCIe	PCI Express
PFN	Physical Frame Number
PGAS	Partitioned Global Address Space
POSIX	Portable operating system interface
ppn	processes per node
PR	Pull Request
QP	Queue Pair (InfiniBand)
RC	Reliable Connection (InfiniBand)
rcache	Registration Cache
RDMA	Remote Direct Memory Access
REQ	Request
rkey	Remote KEY
RMA	Remote Memory Access
RNDV	Rendezvous protocol
RnR	Receiver Not Ready
RoCE	RDMA over Converged Ethernet
ROCm	Radeon Open Compute platform (AMD)
RTE	Run Time Environment
RX	Receive
skb	Socket Buffer
SM	Shared Memory
SM	Subnet Manager (InfiniBand)
SockCM	Socket Connection Manager
SRQ	Shared Receive Queue
SysV	UNIX System V
TL	Transport Layer
TLS	Transpot LayerS
TM	Tag Matching
TX	Transmit
UC	Unreliable Connection (InfiniBand)
UCC	Unified Collective Communications
UCD	Unified Communication Datatypes
UCF	Unified Communication Framework
UCM	Unified Communication Memory
UCP	Unified Communication Protocols Higher level API
UCS	Unified Communication Service Common utilities
UCT	Unified Communication Transport Lower level API
UCX	Unified Communication X
UD	Unreliable Datagram (InfiniBand)
uGNI	user level generic network interface (Cray)
UMR	User mode memory registration
VPI	Virtual Protocol Interconnect
WFE	Wait for event
WIP-DNM	Work-in-Progress-Do-Not-Merge
WQ	Work Queue (InfiniBand)
WQE	Work Queue Elements (pronounce WOOKIE)
WR	Work Request
XPMEM	XPMEM Linux kernel module originally developed by SGI implementing cross process memory mapping with zero copy
XRC	eXtended Reliable Connection (InfiniBand)
XRCD	XRC Domains
XRQ	Mellanox Shared Receive Queue
Zcopy	Zero Copy