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NEWS.md

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Libfabric release notes

This file contains the main features as well as overviews of specific bug fixes (and other actions) for each version of Libfabric since version 1.0.

v1.2.0, TBD

General notes

  • Added PSM2 provider

PSM provider notes

  • General bug fixes
  • Support auto progress mode
  • Support more threading modes
  • Only set FI_CONTEXT mode if FI_TAGGED or FI_MSG is used
  • Support Intel Omni-Path Fabric via the psm2-compat library

PSM2 provider notes

  • Initial addition

Sockets provider notes

  • General bug fixes and code cleanup
  • Increase buffered receive limit
  • Ignore FI_INJECT flag for atomic read operation
  • Return -FI_EINVAL instead of -FI_ENODATA for fi_endpoint for invalid attributes
  • Set default tag format to FI_TAG_GENERIC
  • Set src/dest iov len correctly for readv operations
  • Fix random crashes while closing shared contexts
  • Fix an out of bound access when large multi-recv limit is specified by user
  • Reset tag field in CQ entry for send completion
  • Do not set prov_name in fabric_attr

usNIC provider notes

  • The usNIC provider does not yet support asynchronous memory registration. Return -FI_EOPNOTSUPP if an event queue is bound to a domain with FI_REG_MR.
  • Set fi_usnic_info::ui_version correctly in calls to fi_usnic_ops_fabric::getinfo().
  • Improve fi_cq_sread performance.
  • Return -FI_EINVAL from av_open when given invalid paramters.
  • Fix bug in fi_av_remove that could lead to a seg fault.
  • Implement fi_av_insertsvc.
  • Report FI_PROTO_RUDP as protocol for EP_RDM.

Verbs provider notes

v1.1.1, TBD

General notes

PSM provider notes

  • General bug fixes
  • Proper termination of the name server thread
  • Add UUID and PSM epid to debug output
  • Add environment variable to control psm_ep_close timeout
  • Code refactoring of AM-based messaging
  • Check more fields of the hints passed to fi_getinfo
  • Generate error CQ entries for empty result of recv with FI_SEEK flag
  • Correctly handle overlapped local buffers in atomics
  • Handle duplicated addresses in fi_av_insert
  • Fix the return value of fi_cq_readerr
  • Call AM progress function only when AM is used
  • Detect MPI runs and turns off name server thread automatically

Sockets provider notes

  • General clean-up and restructuring
  • Add fallback mechanism for getting source address
  • Fix fi_getinfo to use user provided capabilities from hints
  • Fix hostname and port number and added checks in sock_av_insertsym
  • Add retry for connection timeout
  • Release av resources in the error path
  • Remove separate read/write CQ to be consistent with the man page
  • Increase default connection map size and added environment variable to specify AV, CQ, EQ and connection map size to run large scale tests
  • Fix FI_PEEK operation to be consistent with the man page
  • Fix remote write event not to generate CQ event
  • Fix CSWAP operation to return initial value
  • Use size_t for min_multi_recv and buffered_len
  • Set address size correctly in fi_getname/fi_getpeer

usNIC provider notes

  • Fix EP_RDM reassembly issue for large messages
  • Return correct number of read completions on error
  • Fix EP_RDM and EP_MSG data corruption issue when packets are actually corrupted on the wire
  • Fix EP_RDM and EP_MSG fi_tx_size_left/fi_rx_size_left functions

Verbs provider notes

  • Add more logging for errors
  • Bug fixes

v1.1.0, Wed Aug 5, 2015

General notes

  • Added fi_info utility tool
  • Added unified global environment variable support
  • Fixed configure issues with the clang/llvm compiler suite

PSM provider notes

  • General bug fixes
  • Move processing of triggered ops outside of AM handlers
  • Generate CQ entries for cancelled operations
  • Remove environment variable FI_PSM_VERSION_CHECK
  • Fix multi-recv completion generation
  • Environment variable tweaks

Sockets provider notes

  • General bug fixes and code cleanup
  • Add triggered operation suppport
  • Generate error completion event for successful fi_cancel
  • Support fi_cancel for tx operations
  • Enable option for setting affinity to progress thread
  • Improve error handling during connection management
  • Avoid reverse lookup for every received message
  • Avoid polling all connections while checking for incoming message
  • Use fast_lock for progress engine's list_lock
  • Handle disconnected sockets
  • Add rx entry pool
  • Mark tx entry as completed only if data is sent out to wire
  • Add rx control context for every tx context for progressing control messages
  • Set source address when addressing information is not passed by the application
  • Reset return value after polling CQ ring buffer
  • Reset FI_TRIGGER flag while triggering triggered operations
  • Ensure progress of control context

usNIC provider notes

  • General bug fixes
  • Add support for fi_getname/fi_setname, fi_cq_sread
  • Change FI_PREFIX behavior per fi_getinfo(3)
  • Fix to report correct lengths in all completions
  • Support fi_inject() with FI_PREFIX
  • Properly support iov_limit
  • Support FI_MORE
  • Fixed fi_tx_size_left() and fi_rx_size_left() usage
  • Fixed obscure error when posting cq_size operations without reading a completion

Verbs provider notes

  • AF_IB addreses can now be passed as node argument to fi_getinfo
  • Added support for fi_setname and migrating passive EP to active EP
  • Detect and report multiple verbs devices if present
  • Bug fixes

v1.0.0, Sun May 3, 2015

Initial public release, including the following providers:

  • PSM
  • Sockets
  • usNIC
  • Verbs