Provider Feature Matrix v1.6.x

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)

❌ = 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	❌	✓	❌	❌	✓	✓	❌	❌	✓	✓	✓	*
FI_EP_MSG	❌	✓	❌	✓	❌	❌	❌	❌	✓	❌	*	✓
FI_EP_RDM	✓	✓	*	❌	✓	✓	✓	✓	✓	❌	*	*

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

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

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	✓	✓	✓	✓	✓	✓	✓	❌	✓	❌	✓	✓
FI_MR_SCALABLE	✓	✓	❌	❌	✓	✓	C	✓	✓	✓	❌	❌

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

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