Provider Feature Matrix v1.6.x - ofiwg/libfabric GitHub Wiki

The tables below indicate which features are supported by which in-tree libfabric providers. Please update the tables as appropriate if you see a box that hasn't been assessed or an incorrect mark in one of the boxes.

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Key

✓ = well supported

* = limited support (e.g., not supported for all endpoint types or not optimal for performance)

:x: = not supported

R = required mode bit

O = optional mode bit

(no mark) = not applicable or not needed

? = provider hasn't been assessed yet for this feature

C = same as that of Core provider.

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Endpoint Types	bgq	gni	mlx	nd	psm	psm2	rxm	shm	sockets	udp	usnic	verbs
FI_EP_DGRAM	:x:	✓	:x:	:x:	✓	✓	:x:	:x:	✓	✓	✓	*
FI_EP_MSG	:x:	✓	:x:	✓	:x:	:x:	:x:	:x:	✓	:x:	*	✓
FI_EP_RDM	✓	✓	*	:x:	✓	✓	✓	✓	✓	:x:	*	*

Primary Capabilities	bgq	gni	mlx	nd	psm	psm2	rxm	shm	sockets	udp	usnic	verbs
FI_MSG	✓	✓	:x:	✓	✓	✓	✓	✓	✓	✓	✓	✓
FI_RMA	✓	✓	:x:	✓	✓	✓	✓	✓	✓	:x:	:x:	*
FI_TAGGED	✓	✓	✓	:x:	✓	✓	✓	✓	✓	:x:	:x:	*
FI_ATOMIC	✓	✓	:x:	:x:	✓	✓	:x:	✓	✓	:x:	:x:	*
FI_NAMED_RX_CTX	✓	✓	:x:	:x:	:x:	✓	:x:	:x:	✓	:x:	:x:	:x:
FI_DIRECTED_RECV	✓	✓	:x:	:x:	:x:	✓	✓	:x:	✓	:x:	:x:	:x:
FI_READ	✓	✓	:x:	✓	✓	✓	✓	✓	✓	:x:	:x:	✓
FI_WRITE	✓	✓	:x:	✓	✓	✓	✓	✓	✓	:x:	:x:	✓
FI_SEND	✓	✓	:x:	✓	✓	✓	✓	✓	✓	✓	*	✓
FI_RECV	✓	✓	:x:	✓	✓	✓	✓	✓	✓	✓	*	✓
FI_REMOTE_READ	✓	✓	:x:	✓	✓	✓	✓	✓	✓	:x:	:x:	✓
FI_REMOTE_WRITE	✓	✓	:x:	✓	✓	✓	✓	✓	✓	:x:	:x:	✓
FI_MULTICAST	?	:x:	:x:	:x:	:x:	:x:	:x:	:x:	:x:	*	:x:	:x:

Secondary Capabilities	bgq	gni	mlx	nd	psm	psm2	rxm	shm	sockets	udp	usnic	verbs
FI_MULTI_RECV	✓	✓	:x:	:x:	✓	✓	✓	✓	✓	:x:	:x:	*
FI_SOURCE	✓	✓	:x:		:x:	✓	✓	✓	✓	✓	✓	:x:
FI_SOURCE_ERR	?	✓	?		:x:	✓	?	:x:	:x:	?	?	?
FI_RMA_EVENT	:x:	✓	:x:	:x:	✓	✓	:x:	:x:	✓	:x:	:x:	:x:
FI_TRIGGER	:x:	✓	:x:	:x:	✓	✓	:x:	:x:	✓	:x:	:x:	:x:
FI_FENCE	✓	✓	✓	:x:	:x:	:x:	:x:	:x:	✓	:x:	:x:	:x:
FI_LOCAL_COMM	?	✓	✓	:x:	✓	✓	C	✓	✓	✓	:x:	✓
FI_REMOTE_COMM	?	✓	✓	✓	✓	✓	C	:x:	✓	✓	✓	✓

Modes	bgq	gni	mlx	nd	psm	psm2	rxm	shm	sockets	udp	usnic	verbs
FI_CONTEXT	R		R	R	R	R	O					O
FI_CONTEXT2	?
FI_LOCAL_MR				R			O				R	R
FI_MSG_PREFIX											R
FI_ASYNC_IOV	R
FI_RX_CQ_DATA	O											R
FI_NOTIFY_FLAGS_ONLY	?										?
FI_RESTRICTED_COMP	?										?

Memory Registration Modes	bgq	gni	mlx	nd	psm	psm2	rxm	shm	sockets	udp	usnic	verbs
FI_MR_BASIC	✓	✓	✓	✓	✓	✓	✓	:x:	✓	:x:	✓	✓
FI_MR_SCALABLE	✓	✓	:x:	:x:	✓	✓	C	✓	✓	✓	:x:	:x:

Additional Features	bgq	gni	mlx	nd	psm	psm2	rxm	shm	sockets	udp	usnic	verbs
FABRIC_DIRECT	✓	✓	:x:	:x:	:x:	:x:	:x:	:x:	✓	:x:	:x:	:x:
FI_RM_ENABLED	:x:	✓	:x:		✓	✓	✓	✓	✓	✓	:x:	*
Scalable endpoints	✓	✓	:x:	:x:	:x:	✓	:x:	:x:	✓	:x:	:x:	:x:
Counters	✓	✓	:x:	✓	✓	✓	✓	:x:	✓	:x:	:x:	*

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Note: The mxm provider was deprecated and removed from libfabric. It has been replaced with the mlx provider.