fi_udp(7) @VERSION@ fi_udp(7)NAMEfi_udp - The UDP Fabric Provider
OVERVIEW
The UDP provider is a basic provider that can be used on any system
that supports UDP sockets. The provider is not intended to provide
performance improvements over regular TCP sockets, but rather to allow
application and provider developers to write, test, and debug their
code. The UDP provider forms the foundation of a utility provider that
enables the implementation of libfabric features over any hardware.
SUPPORTED FEATURES
The UDP provider supports a minimal set of features useful for sending
and receiving datagram messages over an unreliable endpoint.
Endpoint types : The provider supports only endpoint type FI_EP_DGRAM.
Endpoint capabilities : The following data transfer interface is sup‐
ported: fi_msg. The provider supports standard unicast datagram trans‐
fers, as well as multicast operations.
Modes : The provider does not require the use of any mode bits.
Progress : The UDP provider supports both FI_PROGRESS_AUTO and
FI_PROGRESS_MANUAL, with a default set to auto. However, receive side
data buffers are not modified outside of completion processing rou‐
tines.
LIMITATIONS
The UDP provider has hard-coded maximums for supported queue sizes and
data transfers. These values are reflected in the related fabric
attribute structures
EPs must be bound to both RX and TX CQs.
No support for selective completions or multi-recv.
No support for counters.
RUNTIME PARAMETERS
No runtime parameters are currently defined.
SEE ALSOfabric(7), fi_provider(7), fi_getinfo(3)AUTHORS
OpenFabrics.
Libfabric Programmer's Manual 2017-07-27 fi_udp(7)
