#
## Copyright (C) Mellanox Technologies Ltd. 2001-2021.  ALL RIGHTS RESERVED.
## Copyright (C) UT-Battelle, LLC. 2014-2019. ALL RIGHTS RESERVED.
## Copyright (C) ARM Ltd. 2017-2021.  ALL RIGHTS RESERVED.
##
## See file LICENSE for terms.
##
#

## Current
### Features:
### Bugfixes:

## 1.13.0 (July 7, 2022)
#### Features
##### Core
* Added new objects to VFS: local and remote address of endpoint, statistics of ucp_ep_create success/failure, failed/destroyed endpoints
* Added support for UCX static libraries
* Added profiling for rkey management routines
* PCIe relaxed order enabled by default for AMD CPUs
#### UCP
* Added API to pass pre-registered memory handle to UCP operations
* Added implementation of AM rendezvous protocol
* Added 2-stage pipeline rendezvous protocol for GPU
* Added support for fragment mem_type for v1 pipeline proto, disabled by default
* Added active message support for proto v2
* Added UCP memory registration cache
* Improved adaptive progress - deactivate iface when all p2p lanes are destroyed
* Added support for user memh in proto_v1
* Added support for selecting local address when creating a client endpoint
* Added option to limit GPUDirectRDMA size in rendezvous protocol, UCX_RNDV_MEMTYPE_DIRECT_SIZE
* Deprecated UCX_SOCKADDR_AUX_TLS configuration parameter
#### UCT
* Introduced API uct_md_mkey_pack_v2
* Introduced UCT iface features API
* Introduced max_inflight_eps parameter in perf_attr API
* Introduced UCT_SEND_FLAG_PEER_CHECK flag that forces checking connectivity to a peer
* Introduced UCX_RCACHE_PURGE_ON_FORK to enable/disable cleaning regions when application is forking
#### RDMA CORE (IB, ROCE, etc.)
* Introduced NDR autorecognition
* Introduced CQE zipping support
* Set the default MAX_RD_ATOMIC to maximum value supported by the hardware
#### ROCM
* Increased maximum number of HSA agents
#### UCS
* Added topo module infrastructure
* Added memtrack and rcache information to VFS
#### Tools
* Added support for pre-registered memory in ucx_perftest
* Added loopback transport support for UCT perf tests
### Bugfixes
#### Core
* Fixed not deallocating memory from ucp_mem_unmap if no rcache
* Fixed versioning infrastructure
* Multiple code improvements: refactoring, debug prints and assertions, etc.
* Multiple improvements in build, test and docs infrastructure
#### UCP
* Resolving remote EP ID when creating local EP disabled by default
* Multiple fixes in keepalive protocol
* Fixed initialization request send state if software RMA/AMO in use
* Fixed error handling in RMA and BW lanes selection logic
* Fixed CM wireup fallback
* Fixed occasional crash in finalize
* Fixed AM proto flags
* Fixed single zcopy proto initialization for AM
* Fixed proto v2 selection, take into account user header length
* Fixed selecting auxiliary transports when creating EP for sending EP_REMOVED
* Fixed printing invalid configuration
* Fixed allocation of indirect remote ID for internal EP if connected EP supports PEER_FAILURE
* Fixed memh allocation when no rcache
* Fixed protocol selection logic for UCP AM send
* Fixed error handling flow for EP discard requests from pending queue
* Fixed EP destroy flow
* Fixed rsc_index for prereg_md_map
* Fixed wireup error handling flow Create EP which send WIREUP_MSG/EP_REMOVED with AM lane only
* Fixed probe for multi-fragment eager
* Fixed alignment for AM rdesc init
* Fixed perf estimation for proto v2
* Fixed CM wireup with proto v2
* Fixed EP discard flow during fast-forward
* Fixed datatype issue in TAG send
* Fixed EP refcount overflow
* Fixed EP error handling flow
* Fixed wire compatibility in address unpacking
* Fixed ucp_ep_close_nb for failed endpoint when related requests have registered memory that should be invalidated
* Fixed fragmented proto v2
* Fixed UCP address v2 packing/unpacking and usage of seg_size
* Fixed purge requests on failed endpoint
* Fixed error handling of connecting p2p lanes during WIREUP phase
* Fixed UCP endpoint use after free
#### UCT
* Fixed ABI break of uct_ep_params_t
* Fixed common intra-node keepalive protocol
* Fixed a typo UCT_PERF_ATTR_FIELD_REMOTE_SYS_DEIVCE -> UCT_PERF_ATTR_FIELD_REMOTE_SYS_DEVICE
* Fixed potential crash on MD mem alloc
* Disabled PEER_FAILURE capability for XPMEM
#### RDMA CORE (IB, ROCE, etc.)
* Fixed 2G aligned MR registration
* Fixed FC_HARD_REQ resending
* Fixed remote access to invalidated MR
* Fixed max_rd_atomic_dc value for DV
* Fixed DC handshake logic
* Fixed error handling flows
* Fixed flush(CANCEL) with UD and DC transports
* Fixed multi-path handling for passive endpoint with UD transport
* Fixed attributes for DV QP creation
* Fixed device query
* Fixed memory leak in case of disabling RDMA transport
* Fixed dci->pool_index initialization
* Fixed fallback if port speed not detected
* Fixed tag offload recv for inlined data
* Fixed PKEY index initialization
* Disabled mlx5 ifaces on verbs MD
#### TCP
* Fixed flush(CANCEL)
* Fixed close protocol when UCT EP pairs have only RX capability
* Fixed query local/remote saddr
#### GPU (CUDA, ROCM)
* Fixed a bug in invalidating address range in CUDA_IPC
* Fixed CUDA context caching and cleanup
* Fixed ROCM initialization
* Fixed ROCM components compilation
* Fixed IPC tls reachability check
* Fixed ROCM memory type detection
* Use ROCM remote_agent if available
* Fixed CUDA module compilation with clang 13
* Fixes in ROCm memory detection and performance estimation
#### KNEM
* Fixed memory registration cost
#### UCM
* Fixed potential hang on init
#### UCS
* Fixed name shadow problem in CentOS6.x
#### Tools
* Print stream API limits and handle stream feature in ucx_info
* Replaced ucp_ep_close_nb by ucp_ep_close_nbx in examples
* Replaced completed field by checking UCS status in io_demo
#### JAVA
* Throw exception if ucp_mem_query failed
#### GO
* Disabled go bindings in rpmbuild
* Fixed configure behavior if can't find go compiler
* Standalone performance benchmark
* Increased port range + make it dependent on agent_id
* Check compiler minimum version
* Set GOCACHE to a local directory that is cleared for each job in CI
* Disabled module for goperftest
* Fixed OOS build

## 1.12.1 (March 21, 2022)
#### Bugfixes
* Fixed memory hooks for Cuda 11.5
* Fixed memory type cache merge
* Fixed continuously triggering wakeup fd when keepalive is used
* Fixed memtype cache fallback when memory hooks are not installed
* Fixed parsing header flags of worker address
* Fixed pipeline protocol when sending from host memory to GPU memory
* Fixed transport progress not deactivated when all transport's connections are closed
* Fixed progress loop in io_demo application
* Fixed ROCm segfault when using internal_ops functions
* Fixed ROCm memory hooks
* Fixed performance regression on A64FX
* Fixed DCT create failure with rdma-core v22
* Fixed golang bindings build
* Fixed .deb package build on Ubuntu 22.04
* Fixed build on archlinux

#### Important changes
* If Cuda memory hooks on driver API cannot be installed, memory type cache and
  memory registration cache will be disabled. This may lead to lower performance
  of some applications on setups with NVIDIA GPUs, even if Cuda memory is not
  being used. Prior to this change, failing to install driver API hooks could
  lead to runtime errors or data corruption when Cuda memory is used and linked
  statically with cuda runtime.
  In order to revert to previous behavior (when the application is linked
  dynamically with cuda runtime), the user can set UCX_MEM_CUDA_HOOK_MODE=reloc.
  See more info in https://github.com/openucx/ucx/pull/7865.

## 1.12.0 (January 12, 2022)
### Features:
#### Core
* Added beta-level support for Go language bindings
* Added new objects to VFS (md, component, log_level, etc.)
* Added configuration variable to specify which loadable modules are allowed
* Added build-time configuration to disable sigaction overriding
#### UCP
* Added client_id to ucp_worker_create() and ucp_conn_request_query() APIs
* Added ucp_worker_address_query() API
* Updated ucp_ep_query() API for getting local and remote addresses
* Added address versioning to correctly preserve wire compatibility starting from version 1.11.0
* Added new client/server connection establishment packet header format
* Enabled rendezvous and tag sync protocols when error handling is enabled on the endpoint
* Added iov zcopy support to RMA operations
* Reduced memory usage of unexpected messages by fitting receive buffer size to packet size
* Added support for modifying UCT and UCS configs by ucp_config_modify() API
* Optimized unpacked rkeys memory consumption
* Added request flag to influence latency vs. bandwidth protocol
* Reduced memory management overhead with new protocols
* Improved performance calculations for new protocols
* Added AMO support with GPU memory target using new protocols
* Added put_zcopy, get_zcopy and pipeline based rendezvous in new protocols
* Added support for user-defined alignment in Active Messages
* Added support for offload tag sync in new protocols
* Updated ucp_atomic_post() to use NBX flow
#### UCT
* Added API - uct_iface_is_reachable_v2()
* Added IPv6 address support in TCP
* Added latency estimation to uct_iface_estimate_perf()
* Adjusted knem and cma overhead cost
* Increased built-in TCP keep-alive interval to 2 seconds
#### RDMA CORE (IB, ROCE, etc.)
* Added detection of IB NDR devices
* Added check for CQ overrun in assert mode
* Added bitmap usage for releasing detached DCIs
* Added configuration for requests ack frequency with DevX
* Added remote QP info to tx error CQE traces
#### UCS
* Added API for a per-process aggregate-sum statistics report
* Added memory pool set data structure
* Added new ptr_array API for bulk allocation
* Added ucs_string_buffer_append_flags() for string buffer
* Added ucs_ffs32()
* Added ucs_vsnprintf_safe() which always adds '\0'
* Added thread-safe put to ptr_map
* Improved accuracy of the topology distance estimation
* Added prints of leaked callbacks from the callback queue
* Removed a diagnostic message when fuse thread is stopped
* Added configurable limit for the memory consumed by rcache
* Added configuration for VFS(FUSE) thread affinity
* Added memory limit support to memtrack
#### CUDA
* Added global memtype cache to allow UCT transports to query memory attributes
* Auto-register CUDA whole allocations to avoid repeated registration costs
* Added capability to select CUDA stream based on source and destination memory type
  (required for device memory based pipelining)
* Added selection of CUDA-IPC capabilities based on NVLINK topology
  (to prefer writes vs. reads for specific platforms using NVML)
* Added option to set cuda_copy bandwidth
* Added profiling of CUDA runtime function calls
* Added option to limit GPUDirectRDMA size in rendezvous protocol
#### Java
* Added ucp_listener_reject functionality
* Added support for setting worker id and querying it from the connection request
* Added support to bind on a free port in UcpListener
#### Packaging
* Added cmake config files for better integration with external cmake based projects
#### Tests
* Removed memcpy from AM eager flow in io_demo
* Added check_qps.sh script to detected stuck QPs
* Improved diagnostic in test_init_mt
* Added iov support in ucp_client_server
* Added option to use epoll in io_demo
* Added registration of memory allocated by io_demo in memtrack
* Extended statistics in io_demo
* Improved logging in io_demo
* Replaced rand by urand in io_demo
* More improvements in io_demo
* Generalized median calculation to support any percentile in ucx_perftest
#### Tools
* Added loop-back transport support in ucx_perftest
* Split ucx_perftest into separate modules
* Added process placement option for ucx_info
* Extended parameters correctness check in ucx_perftest
* Added support for GPU memory RMA and atomics in ucx_perftest
#### CI
* Updated gtest 1.7 to 1.10
* Increased uptime in network corrupter (used for io_demo)
* Enabled set of gtests for new protocols
* Added running CI in docker containers
* Increased thresholds for test_ucp_wait_mem
* Added test for ucx binary compatibility between OS versions
* Increased test job timeout to 6 hours
* Reduced testing time under valgrind
* Added suppressions for glibc and libnl leaks
* Relaxed performance requirements in perf test

### Bugfixes
#### Core
* Fixed invalid remote memory access after connection error
* Fixed creating more than 64K endpoints between the same peers
* Fixed simultaneous endpoint close with ucp_hello_world
#### UCP
* Fixes and improvements in new protocols infrastructure
* Fixes in AM flows
* Fixed tag short threshold selection
* Multiple fixes in keep-alive protocol
* Multiple fixes in wire-up protocol
* Fixes in error flow during rendezvous protocol
* Multiple fixes in general error flow
* Fixed fallback to PUT pipeline in rendezvous protocol
* Reduced default value of keep-alive interval to 20 seconds
* Fixes in tag_send datatype processing
#### UCT
* Fixed keep-alive protocol for intra-node transports (sm, cuda)
* Fixed deadlock in TCP
* Suppressed EHOSTUNREACH error in TCP sockcm
* Restricted connecting loop-back to other devices in TCP
#### RDMA CORE (IB, ROCE, etc.)
* Fixed pkey_index initialization when creating RC QP with DEVX
* Disabled MP_SRQ by default
* Fixed TX WQ overflow check
* Fixed dci->pool_index initialization when HAVE_DC_DV is false
* Fixed syndrome value for creating rdmacm reserved qpn
* Fixed error code on rdma_establish failure
* Fixed uct_ep_am_short_iov for UD verbs
* Fixed handling of error CQE after rc_ep is destroyed
* Fixes in flow control when error CQE is polled
* Multiple fixes in RC and DC error flows
* Fixed deadlock between DCIs and RDMA_READ credits
* Removed AM handler invocation for PURE_GRANT messages
* Fixed endpoint arbiter_group leak in DC
* Fixed resource check in flush for DC
#### UCS
* Fixed segmentation fault for ucs_stats_parser
* Fixed potential crash on cleanup when use UCX profiling
* Fixed read_profile print of new request
* Fixed uninitialized variable access in VFS
* Changed log level of inotify_init failure to diag
* Fixed integer overflow in mpool chunk allocation
#### Packaging
* Fixed with-fuse arg for RPM build
#### Documentation
* Fixes in UCP, UCT, UCS, FAQ and README documentation
#### Tests
* Multiple fixes in io_demo
#### CI
* Fixed snapshot docker name
* Fixed hipMallocManaged hook gtest
* Fixes in Azure release pipeline
* Fixes in Coverity CI
* Fixed test_uct_query gtest for ROCm
* Fixes in jenkins test script
* Fixed release commit title check

## 1.11.2 (September 30, 2021)
### Bugfixes
* Fixes in Java release pipeline
* Fixes in handling large number of devices
* Fixes in UD out-of-order processing
* Fixes in switching transports during client/server connection setup
* Fixes in transport-level error reporting

## 1.11.1 (August 31, 2021)
### Features:
#### UCS
* Added API to read boot ID value or use machine_guid

### Bugfixes:
* Fixes in Cuda memory hooks
* Fixes in setting traffic class for DCT RoCE transport
* Fixes in TCP endpoint flush
* Fixes in TCP pending operations progress
* Fixes in release pipelines
* Fixes in error handling flow
* Fixes in multi-threaded tag probe
* Fixes in TCP disconnect flow
* Fixes in RPM post-install script
* Fixes in UCT common keepalive

## 1.11.0 (July 26, 2021)
### Features:
#### Core
* Added support for UCX monitoring using virtual file system (VFS)/FUSE
* Added support for applications with static CUDA runtime linking
* Added support for a configuration file
* Updated clang format configuration
#### UCP
* Added rendezvous API for active messages
* Added user-defined name to context, worker, and endpoint objects
* Added flag to silence request leak check
* Added API for endpoint performance evaluation
* Added API - ucp_request_query
* Added API - ucp_lib_query
* Ported connection manager to a new UCT API
* Added bandwidth optimizations for new protocols multi-lane
* Added support for multi-rail over lanes with BW ratio >= 1/4
* Added support for tracking outstanding requests and aborting those in case of connection failure
* Refactored keep-alive protocol
* Added device id to wireup protocol
* Added support up to 128 transport layer resources in UCP context
* Added support CUDA memory allocations with ucp_mem_map
* Increased UCP_WORKER_MAX_EP_CONFIG to 64
* Adjusted memory type zcopy threshold when UCX_ZCOPY_THRESH set
* Refactored wireup protocols, rendezvous, get, zcopy protocols
* Added put zcopy multi-rail
* Improved logging for new protocols
* Added system topology information
* Added new protocols for eager offload protocols
#### UCT
* Extended connection establishment API
* Added active message AM alignment in iface params
* Added active message short IOV API.
* Added support for interface query by operation and memory type
* Added API to get allocation base address and length
* Added md_dereg_v2 API
#### UCS
* Added log filter by source file name.
* Added checking for last element in fraglist queue
* Added a method to get IP address from sockaddr.
* Added memory usage limits to registration cache
#### UCM
* Improved x86 parser to recognize some mov flavors
#### CUDA
* Added registration for whole CUDA allocations
* Added CUDA-IPC keepalive
* Adjusted performance estimations
* Added Improve logging
* Added allocation methods for CUDA pinned/managed memory
* Added support for a global cuda_ipc cache
#### RDMA CORE (IB, ROCE, etc.)
* Added report of QP info in case of completion with error
* Refactored of FC send operations
* Added support for  DevX unique QPN allocation
* Optimized endpoint lookup for  DCI
* Added support for RDMA sub-function (SF)
* Added support for DCI via DEVX
* Added DCI pool per LAG port
* Added support  for RoCE IP reachability check using a subnet mask
* Added active message short IOV for UD/DC/RC mlx, UD/RC verbs
* Added endpoint keep alive check for UD
* Suppressed warning if device can't be opened
* Added support for multiple flush cancel without completion
* Added ignore for devices with invalid GID
* Added support for SRQ linked list reordering
* Added flush by flow control on old devices
* Added support for configurable rdma_resolve_addr/route timeout
#### Shared memory
* Added active message short IOV support for posix, sysv, and self transports
#### TCP
* Added support for peer failure in case of CONNECT_TO_EP
* Added support for active message short IOV
#### Java
* Added full support for UCP Java API
#### Tests
* Added length/mem_type for UCP client server example
* Added port sockaddr tests for a new API
* Added test send-recv between client/server with diff UCX_IB_NUM_PATHS
* Added support for CUDA and CUDA managed memory in io_demoo
* Added support for a custom watchdog timeout from command line
* Extended  memtype hook tests
#### Tools
* Added UCP active message support to perftest
* Added error handling option to perftest
* Added wakeup option
* Added performance tests for am short iov
#### CI
* Added RHEL 7.6 with MOFED 4.7
* Added Fedora 34, RHEL 7.2, 7.4
* Added PGI support from HPC-SDK module
* Added docker image with CUDA 11.2
* Added IODEMO test
* Added Ubuntu 20.4
* Added test for connection manager fallback in client-server testing
* Added loopback interface for tcp testing

### Bugfixes:
#### Build
* Fixes in libnuma detection macro
* Fixes for cross compilation support
* Fixes for --without-dc compilation
#### Continues Integration
* Fixes in Azure pipeline build system
* Fixes in Coverity CI
* Fixes in Azure release pipeline
#### Packaging
* Fixed in DEB package - added essential system dependencies
#### Documentation
* Fixes in UCP, UCT, Readme, FAQ, and Read-the-docs documentation
#### Tests
* Fixes in CMA peer failure test
* Fixes in SRQ tests
* Fixes in the usage requests_wait
* Fixes in test_uct_query
* Fixes addressing race conditions on client user data in test_uct_sockaddr
* Fixes in IODEMO app
* Fixes in error handling flow for perftest
* Fixes in perftest batch tests
* Fixes addressing hang issues for rendezvous protocol in UCP client server example
#### UCP
* Fixes in endpoint error handling
* Fixes in error reporting failed CM lanes
* Fixes in progress worker flush
* Fixes in rendezvous pipeline flow
* Fixes in recursive protocol selection
* Fixes in error handling for AM_ZCOPY
* Fixes in length check condition in RMA PUT short
* Fixes in failure handling rendezvous offload send
* Fixes in offload completion with inlined data
* Fixes in statistics calculations for rendezvous protocol
* Fixes in ucp_worker_query() thread mode for SERIALIZED
* Fixes preventing leaks of UCP requests
#### ROCM
* Fixes in device memory registration and de-registration
* Fixes in missing mem_query definition for rocm_copy
* Fixes addressing build failure due to const violation
* Fixes in sockaddr_accessibility test for rocm_copy and rocm_ipc
* Fixes in bandwidth estimation for rocm_ipc
#### RDMA CORE (IB, ROCE, etc.)
* Fixes addressing deadlock between DCI resources and RDMA_READ credits
* Fixes in DSCP for RoCE DCT
* Fixes in flush(cancel) flow
* Fixes preventing segfault in uct_rdmacm_cm_ep_str
* Fixes in scatter-gather entries logging
* Fixes for compilation with experimental verbs
* Fixes in UD dgid filtering
* Fixes in domain resources destroying
* Fixes in PCIe bandwidth calculation
* Fixes addressing CQ creation failure using legacy ibv API
* Fixes in iov2sge converter
* Fixes in port width check on HDR100
* Fixes in SL selection
* Fixes in hardware tag matching compilation
* Fixes in uct_rdmacm_cm_cqs hash key
* Fixes for compilation with rdma-core 20
#### Java
* Fixes in tag sender mask
#### UCT
* Fixes in reachability of loopback ifaces
* Fixes addressing  possible uninitialized memory accesses
* Fixes in error flow for endpoints created upon receiving connection request
* Fixes in TCP keepalive to avoid false-positive error detection
#### UCM
* Fixes addressing heap corruption caused by ucp_set_event_handler()
* Fixes in mmap events test

## 1.10.1 (May 12, 2021)
### Bugfixes:
* Fixes in Infiniband port speed detection for HDR100
* Fixes in building gtest-all.cc and sock.c with GCC11
* Fixes addressing performance degradation with cuda memory on a self endpoint
* Fixes in JUCX listener connection handler
* Fixed in configuration of loopback TCP transport (disable by default)
* Fixes in RPM dependency on libibverbs
* Fixes in ABI backward compatibility for active message protocol
* Fixes in the DC transport - adding support for full-handshake mode (off by default)
* Fixes in Active Messages short reply protocol
* Fixes for segmentation fault while listening for connections

## 1.10.0 (March 9, 2021)
### Features:
#### Core
* Added support for Nvidia HPC SDK
* Added support for latest PGI and Clang
* Added support for ROCM-3.7+ (warning generated if older version detected)
* Added support for GCC11
#### Architecture
* Added Arm SVE memcpy()
* Redesigned Arm WFE support
* Improved clear_cache performance for Arm
* Added architecture detection for Zhaoxin CPU
#### CI
* Added release builds on CUDA 11
* Enabled performance validation in gtest
* Added new OS for release CI
#### UCP
* Added locality awareness to the transport selection logic for GPU devices
* Added put/offload/short and put/offload/zcopy protocols
* Added receive message nbx routine
* Reworked AM implementation and API, which adds support for RNDV semantics
* Added support for multi-lane connection manager over TCP
* Added support for printing AM tls with info log level
* Implement flush and destroy for UCT EPs on UCP worker
* Reduced UCP request size
* Added support for keepalive protocol
* Added support for multi-fragment protocol
* Added implementation for protocol progress for eager, bcopy, and multicopy
* Improved selection logic for protocol selection
* Added new protocols for UCP get operation
* Added bcopy protocols with support for GPU memory
* Added RNDV protocol implementation for GPU devices (CUDA, ROCm)
* Set SOCKADDR_CM_ENABLE=y by default
* Added support for fast-path short with new tag protocols
* Added a new parameter to control the CM listener's backlog
* Added support sending AM RTS over short message protocol
* Added support for shared memory multi-lane when CM is used
* Added missing async locks
#### UCT
* Added API for keepalive_timeout value
* Added add uct_completion.status
* Allowed transports to access multiple mem_types
* Removed status arg from uct_completion_callback_t
* Restructured  uct_mem_alloc/uct_md_mem_alloc to use mem_type
* Updated documentation for uct_listener_params
* Lowered the log level for certain network errors
* Added cuda_copy wakeup feature
* Added wakeup support for shared memory
#### UCS
* Added "inf" and "auto" values to time units
* Added on-stack constructors for array and string buffer
* Added ucs_ptr_map_t data structure
* Added bool CSWAP
* Improved logging
* Added optimization for namespace processing
* Fixes for connection matching functionality
#### CUDA
* Added support for global IPC cache
#### RDMA CORE (IB, ROCE, etc.)
* Added support for auto detection of adapative routing settings
* Added an option to poll TX CQ every progress iteration
* Added local and remote addresses to the reject error message
* Added support for UAR allocation with non-cacheable memory type
* Added support for multiple flush cancel without completion
* Added async events callback support
* Added detection for  ConnectX-6, ConnectX-7 and BlueField-1/2 devices
* Added support for connection matching for UD
* Added a check for AM ordering
* Added better support for non-4K MTU values
#### Java (preview)
* Added support for a different javadoc executable path for different java versions
* Added UCS memory type constants
* Added support build on Java10+
* Added support for io-vector datatype.
* Removed libjucx from packages.
#### Tests
* Added CI for CUDA 11
* Added test_ucp_sockaddr_protocols.stream_short
* Reimplemented tests using NBX API
* Added flush(cancel) test
* Added memory_wait mode to perftest
* Added support for clang 10
* Refactored RMA and atomic tests, add memtype support
* Added test for uct_md_mem_query()
* Added request interrupt support
* Added support for connection manager fallbacks
* Added new ucp request test checking for leaks from the ptr_map
#### Documentation
* Added glossaries

### Bugfixes:
#### Portability
* Fixes in print functions to use format string like PRIx64, etc.
* Fixes for Arm v8 cross compilation support
#### Continues Integration:
* Fixes in Github release flow
* Fixes in docker image
#### Packaging
* Removed deb package dependencies
* Fixes in SPEC to make the RPM relocatable
#### Documentation
* Fixes in documentation for ucp_am_recv_data_nbx
* Fixes in quick start example
* Fixes in installation instruction
* Fixes in updates in author list
#### Tests
* Fixes for failures under valgrind runtime
* Fixes in mmap tests for 0-length RMA
* Fixes in definition of LAST_WQE wait timeout
* Fixes in ROCm for mem_buffer test
* Fixes in test name printing format
* Fixes in tcp_sockcm test
#### UCP
* Fixes in worker cleanup flow
* Fixes in RNDV RTS flow
* Fix in length check condition for RMA PUT short
* Fixes in handling failures from AM Bcopy
* Fix in a release flow of deferred data
* Fixes for invalid ID and handling of status in RNDV
* Fixes in short active message reply protocol
#### CUDA
* Fixes in managed memory support
* Fixes in topology detection
#### RDMA CORE (IB, ROCE, etc.)
* Fixes in assert definitions
* Fixes in printing an error about invalid AM Bcopy length for UD
* Fixes for thread safety support
* Fixes to get ROCE device name according to GID
* Fixes for SL selection
* Fixes in create STRICT_ORDER key
* Fixes addressing performance degradation in UD transport due to excess async events
* Fixes in QP destroy
* Fixes for CQ creation failure using old Verbs API
#### UGNI
* Fixing disable logic in config
* Fixing clang 11 warnings
#### Java
* Fixes in build dependencies
* Fixes in constructing UcpRequest object on error
* Fixes in exception handling on endpoint closure request
* Fixes for segfault in UcpErrorHandler
#### UCP
* Fixes in datatype support for get_zcopy RNDV
* Fixes in connection manager disconnect
* Fixes in assert definitions
* Fixes in completion flow for failed EP
* Fixes in flush error handling flow
* Fixes in latency calculations for wireup protocol
* Fixes in offload completion with inlined data
* Fixes in unpacking flow
* Fixes in error handling for various protocols
#### UCT
* Fixes in flush TX
* Fixes in checks for enabling GPU Direct RDMA
#### UCS
* Fixes for crashes on incorrect value set in config
* Fixes in ptr_array
* Fixes in maximal size for ucs_snprintf_safe()
* Fixes in compilation warning
* Fixes in ucs_aarch64_dsb(_op) definition
#### TCP
* Fixes in default route interface confirmation flow
* Fixes in PUT protocol
* Fixes in max connection limit and improved error reporting
#### UCM
* Fixing crash on prevent unload
* Fixes in libucm_rocm
* Fixes for few racing conditions

## 1.9.0 (September 19, 2020)
### Features:
#### UCX Core
- Added a new class of communication routines '*_nbx' that enable API extendability while
  preserving ABI backward compatibility
- Added asynchronous event support to UCT/IB/DEVX
- Added support for latest CUDA library version
- Added NAK-based reliability protocol for UCT/IB/UD to optimize resends
- Added new tests for ROCm
- Added new configuration parameters for protocol selection
- Added performance optimization for Fujitsu A64FX with InfiniBand
- Added performance optimization for clear cache code aarch64
- Added support for relaxed-order PCIe access in IB RDMA transports
- Added new TCP connection manager
- Added support for UCT/IB PKey with partial membership in IB transports
- Added support for RoCE LAG
- Added support for ROCm 3.7 and above
- Added flow control for RDMA read operations
- Improved endpoint flush implementation for UCT/IB
- Improved UD timer to avoid interrupting the main thread when not in use
- Improved latency estimation for network path with CUDA
- Improved error reporting messages
- Improved performance in active message flow (removed malloc call)
- Improved performance in ptr_array flow
- Improved performance in UCT/SM progress engine flow
- Improved I/O demo code
- Improved rendezvous protocol for CUDA
- Updated examples code

#### UCX Java (API Preview)
- Added support for UCX shared library loading from both classpath and LD_LIBRARY_PATH
- Added configuration map to ucp_params to be able to set UCX properties programmatically

### Bugfixes:
- Fixes for most recent versions of GCC, CLANG, ARMCLANG, PGI
- Fixes in UCT/IB for strict order keys
- Fixes in memory barrier code for aarch64
- Fixes in UCT/IB/DEVX for fork system call
- Fixes in UCT/IB for rand() call in rdma-core
- Fixed in group rescheduling for UCT/IB/DC
- Fixes in UCT/CUDA bandwidth reporting
- Fixes in rkey_ptr protocol
- Fixes in lane selection for rendezvous protocol based on get-zero-copy flow
- Fixes for ROCm build
- Fixes for XPMEM transport
- Fixes in closing endpoint code
- Fixes in RDMACM code
- Fixes in memcpy selection for AMD
- Fixed in UCT/UD endpoint flush functionality
- Fixes in rendezvous staging protocol
- Fixes in ROCEv1 mlx5 UDP source port configuration
- Multiple fixes in RPM spec file
- Multiple fixes in UCP documentation
- Multiple fixes in socket connection manager
- Multiple fixes in gtest
- Multiple fixes in JAVA API implementation

## 1.8.1 (July 10, 2020)
### Features:
- Added binary release pipeline in Azure CI

### Bugfixes:
- Multiple fixes in testing environment
- Fixes in InfiniBand DEVX transport
- Fixes in memory management for CUDA IPC transport
- Fixes for binutils 2.34+
- Fixes in RPM SPEC file and package generation
- Fixes for AMD ROCM build environment

## 1.8.0 (April 3, 2020)
### Features:
#### UCX Core
- Improved detection for DEVX support
- Improved TCP scalability
- Added support for ROCM to perftest
- Added support for different source and target memory types to perftest
- Added optimized memcpy for ROCM devices
- Added hardware tag-matching for CUDA buffers
- Added support for CUDA and ROCM managed memories
- Added support for client/server disconnect protocol over rdma connection manager
- Added support for striding receive queue for hardware tag-matching
- Added XPMEM-based rendezvous protocol for shared memory
- Added support shared memory communication between containers on same machine
- Added support for multi-threaded RDMA memory registration for large regions
- Added new test cases to Azure CI

#### UCX Java (API Preview)
- Added APIs for stream send/recv, tag probe, and connect request handle
- Added Java package (automatically published) to Maven central

### Bugfixes:
- Multiple fixes in JUCX
- Fixes in UCP thread safety
- Fixes for most recent versions GCC, PGI, and ICC
- Fixes for CPU affinity on Azure instances
- Fixes in XPMEM support on PPC64
- Performance fixes in CUDA IPC
- Fixes in RDMA CM flows
- Multiple fixes in TCP transport
- Multiple fixes in documentation
- Fixes in transport lane selection logic
- Fixes in Java jar build
- Fixes in socket connection manager for Nvidia DGX-2 platform

## 1.7.0 (January 19, 2020)
### Features:
- Added support for multiple listening transports
- Added UCT socket-based connection manager transport
- Updated API for UCT component management
- Added API to retrieve the listening port
- Added UCP active message API
- Removed deprecated API for querying UCT memory domains
- Refactored server/client examples
- Added support for dlopen interception in UCM
- Added support for PCIe atomics
- Updated Java API: added support for most of UCP layer operations
- Updated support for Mellanox DevX API
- Added multiple UCT/TCP transport performance optimizations
- Optimized memcpy() for Intel platforms
- Added protection from non-UCX socket based app connections
- Improved search time for PKEY object
- Enable gtest over IPv6 interfaces
- Updated Mellanox and Bull device IDs
- Added support for CUDA_VISIBLE_DEVICES
- Increased limits for CUDA IPC registration

### Bugfixes:
- Multiple fixes in UCP, UCT, UCM libraries
- Multiple fixes for BSD and Mac OS systems
- Fixes for Clang compiler
- Fixes for CUDA IPC
- Fix CPU optimization configuration options
- Fix JUCX build on GPU nodes
- Fix in Azure release pipeline flow
- Fix in CUDA memory hooks management
- Fix in GPU memory peer direct gtest
- Fix in TCP connection establishment flow
- Fix in GPU IPC check
- Fix in CUDA Jenkins test flow
- Multiple fixes in CUDA IPC flow
- Fix adding missing header files
- Fix to prevent failures in presence of VPN enabled Ethernet interfaces

## 1.6.1 (September 23, 2019)
### Features:
- Added Bull Atos HCA device IDs
- Added Azure Pipelines testing

### Bugfixes:
- Multiple static checker fixes
- Remove pkg.m4 dependency
- Multiple clang static checker fixes
- Fix mem type support with generic datatype

## 1.6.0 (July 17, 2019)
### Features:
- Modular architecture for UCT transports
- ROCm transport re-design: support for managed memory, direct copy, ROCm GDR
- Random scheduling policy for DC transport
- Optimized out-of-box settings for multi-rail
- Added support for OmniPath (using Verbs)
- Support for PCI atomics with IB transports
- Reduced UCP address size for homogeneous environments

### Bugfixes:
- Multiple stability and performance improvements in TCP transport
- Multiple stability fixes in Verbs and MLX5 transports
- Multiple stability fixes in UCM memory hooks
- Multiple stability fixes in UGNI transport
- RPM Spec file cleanup
- Fixing compilation issues with most recent clang and gcc compilers
- Fixing the wrong name of aliases
- Fix data race in UCP wireup
- Fix segfault when libuct.so is reloaded - issue #3558
- Include Java sources in distribution
- Handle EADDRNOTAVAIL in rdma_cm connection manager
- Disable ibcm on RHEL7+ by default
- Fix data race in UCP proxy endpoint
- Static checker fixes
- Fallback to ibv_create_cq() if ibv_create_cq_ex() returns ENOSYS
- Fix malloc hooks test
- Fix checking return status in ucp_client_server example
- Fix gdrcopy libdir config value
- Fix printing atomic capabilities in ucx_info
- Fix perftest warmup iterations to be non-zero
- Fixing default values for configure logic
- Fix race condition updating fired_events from multiple threads
- Fix madvise() hook

### Tested configurations:
- RDMA: MLNX_OFED 4.5, distribution inbox drivers, rdma-core 22.1
- CUDA: gdrcopy 1.3.2, cuda 9.2, ROCm 2.2
- XPMEM: 2.6.2
- KNEM: 1.1.3

## 1.5.1 (April 1, 2019)
### Bugfixes:
- Fix dc_mlx5 transport support check for inbox libmlx5 drivers - issue #3301
- Fix compilation warnings with gcc9 and clang
- ROCm - reduce log level of device-not-found message

## 1.5.0 (February 14, 2019)
### Features:
- New emulation mode enabling full UCX functionality (Atomic, Put, Get)
  over TCP and RDMA-CORE interconnects that don't implement full RDMA semantics
- Non-blocking API for all one-sided operations. All blocking communication APIs marked
  as deprecated
- New client/server connection establishment API, which allows connected handover between workers
- Support for rdma-core direct-verbs (DEVX) and DC with mlx5 transports
- GPU - Support for stream API and receive side pipelining
- Malloc hooks using binary instrumentation instead of symbol override
- Statistics for UCT tag API
- GPU-to-Infiniband HCA affinity support based on locality/distance (PCIe)

### Bugfixes:
- Fix overflow in RC/DC flush operations
- Update description in SPEC file and README
- Fix RoCE source port for dc_mlx5 flow control
- Improve ucx_info help message
- Fix segfault in UCP, due to int truncation in count_one_bits()
- Multiple other bugfixes (full list on github)

### Tested configurations:
- InfiniBand: MLNX_OFED 4.4-4.5, distribution inbox drivers, rdma-core
- CUDA: gdrcopy 1.2, cuda 9.1.85
- XPMEM: 2.6.2
- KNEM: 1.1.2

## 1.4.0-rc2 (October 23, 2018)
### Features:
- Improved support for installation with latest ROCm
- Improved support for latest rdma-core
- Added support for CUDA IPC for intra-node GPU
- Added support for CUDA memory allocation cache for mem-type detection
- Added support for latest Mellanox devices
- Added support for Nvidia GPU managed memory
- Added support for multiple connections between the same pair of workers
- Added support large worker address for client/server connection establishment
  and INADDR_ANY
- Added support for bitwise atomics operations

### Bugfixes:
- Performance fixes for rendezvous protocol
- Memory hook fixes
- Clang support fixes
- Self tl multi-rail fix
- Thread safety fixes in IB/RDMA transport
- Compilation fixes with upstream rdma-core
- Multiple minor bugfixes (full list on github)
- Segfault fix for a code generated by armclang compiler
- UCP memory-domain index fix for zero-copy active messages

### Tested configurations:
- InfiniBand: MLNX_OFED 4.2-4.4, distribution inbox drivers, rdma-core
- CUDA: gdrcopy 1.2, cuda 9.1.85
- XPMEM: 2.6.2
- KNEM: 1.1.2
- Multiple bugfixes (full list on github)

### Known issues:
#2919 - Segfault in CUDA support when KNEM not present and CMA is active
intra-node RMA transport. As a workaround user can disable CMA support at
compile time: --disable-cma. Alternatively user can remove CMA from UCX_TLS
list, for example: UCX_TLS=mm,rc,cuda_copy,cuda_ipc,gdr_copy.

## 1.3.1 (August 20, 2018)
### Bugfixes:
- Prevent potential out-of-order sending in shared memory active messages
- CUDA: Include cudamem.h in source tarball, pass cudaFree memory size
- Registration cache: fix large range lookup, handle shmat(REMAP)/mmap(FIXED)
- Limit IB CQE size for specific ARM boards
- RPM: explicitly set gcc-c++ as requirement
- Multiple bugfixes (full list on github)

### Tested configurations:
- InfiniBand: MLNX_OFED 4.2, inbox OFED drivers.
- CUDA: gdrcopy 1.2, cuda 9.1.85
- XPMEM: 2.6.2
- KNEM: 1.1.2

## 1.3.0 (February 15, 2018)
### Features:
- Added stream-based communication API to UCP
- Added support for GPU platforms: Nvidia CUDA and AMD ROCm software stacks
- Added API for client/server based connection establishment
- Added support for TCP transport
- Support for InfiniBand tag-matching offload for DC and accelerated transports
- Multi-rail support for eager and rendezvous protocols
- Added support for tag-matching communications with CUDA buffers
- Added ucp_rkey_ptr() to obtain pointer for shared memory region
- Avoid progress overhead on unused transports
- Improved scalability of software tag-matching by using a hash table
- Added transparent huge-pages allocator
- Added non-blocking flush and disconnect for UCP
- Support fixed-address memory allocation via ucp_mem_map()
- Added ucp_tag_send_nbr() API to avoid send request allocation
- Support global addressing in all IB transports
- Add support for external epoll fd and edge-triggered events
- Added registration cache for knem
- Initial support for Java bindings

### Bugfixes:
- Multiple bugfixes (full list on github)

### Tested configurations:
- InfiniBand: MLNX_OFED 4.2, inbox OFED drivers.
- CUDA: gdrcopy 1.2, cuda 9.1.85
- XPMEM: 2.6.2
- KNEM: 1.1.2

### Known issues:
#2047 - UCP: ucp_do_am_bcopy_multi drops data on UCS_ERROR_NO_RESOURCE
#2047 - failure in ud/uct_flush_test.am_zcopy_flush_ep_nb/1
#1977 - failure in shm/test_ucp_rma.blocking_small/0
#1926 - Timeout in mpi_test_suite with HW TM
#1920 - transport retry count exceeded in many-to-one tests
#1689 - Segmentation fault on memory hooks test in jenkins

## 1.2.2 (January 4, 2018)
### Main:
- Support including UCX API headers from C++ code
- UD transport to handle unicast flood on RoCE fabric
- Compilation fixes for gcc 7.1.1, clang 3.6, clang 5

### Details:
- When UD transport is used with RoCE, packets intended for other peers may
  arrive on different adapters (as a result of unicast flooding).
- This change adds packet filtering based on destination GIDs. Now the packet
  is silently dropped, if its destination GID does not match the local GID.
- Added a new device ID for InfiniBand HCA
- [packaging] Move `examples/` and `perftest/` into doc
- [packaging] Update spec to work on old distros while complaint with Fedora
  guidelines
- [cleanup] Removed unused ptmalloc version (2.83)
- [cleanup] Fixup license headers

## 1.2.1 (August 28, 2017)
### Bugfixes:
- Compilation fixes for gcc 7.1
- Spec file cleanups
- Versioning cleanups

## 1.2.0 (June 15, 2017)
### Supported platforms
- Shared memory: KNEM, CMA, XPMEM, SYSV, Posix
- VERBs over InfiniBand and RoCE.
  VERBS over other RDMA interconnects (iWarp, OmniPath, etc.) is available
  for community evaluation and has not been tested in context of this release
- Cray Gemini and Aries
- Architectures: x86_64, ARMv8 (64bit), Power64

### Features:
- Added support for InfiniBand DC and UD transports, including accelerated verbs for Mellanox devices
- Full support for PGAS/SHMEM interfaces, blocking and non-blocking APIs
- Support for MPI tag matching, both in software and offload mode
- Zero copy protocols and rendezvous, registration cache
- Handling transport errors
- Flow control for DC/RC
- Dataypes support: contiguous, IOV, generic
- Multi-threading support
- Support for ARMv8 64bit architecture
- A new API for efficient memory polling
- Support for malloc-hooks and memory registration caching

### Bugfixes:
 - Multiple bugfixes improving overall stability of the library

### Known issues:
#1604 - Failure in ud/test_ud_slow_timer.retransmit1/1 with valgrind bug
#1588 - Fix reading cpuinfo timebase for ppc bug portability training
#1579 - Ud/test_ud.ca_md test takes too long too complete bug
#1576 - Failure in ud/test_ud_slow_timer.retransmit1/0 with valgrind bug
#1569 - Send completion with error with dc_verbs bug
#1566 - Segfault in malloc_hook.fork on arm bug
#1565 - Hang in udrc/test_ucp_rma.nonblocking_stream_get_nbi_flush_worker bug
#1534 - Wireup.c:473 Fatal: endpoint reconfiguration not supported yet bug
#1533 - Stack overflow under Valgrind 'rc_mlx5/uct_p2p_err_test.local_access_error/0' bug
#1513 - Hang in MPI_Finalize with UCX_TLS=rc[_x],sm on the bsend2 test bug
#1504 - Failure in cm/uct_p2p_am_test.am_bcopy/1 bug
#1492 - Hang when using polling fd bug
#1489 - Hang on the osu_fop_latency test with RoCE bug
#1005 - ROcE problem with OMPI direct modex - UD assertion

## 1.1.0 (September 1, 2015)
### Workarounds:
### Features:
- Added support for AM based on FIFO in `mm` shared memory transport
- Added support for UCT `knem` shared memory transport (http://knem.gforge.inria.fr)
- Added support for UCT `mm/xpmem` shared memory transport (https://github.com/hjelmn/xpmem)

## 1.0.0 (July 22, 2015)
### Features:
- Added support for UCT `cma` shared memory transport (Cross-Memory Attatch)
- Added support for UCT `mm` shared memory transport with mmap/sysv APIs
- Added support for UCT `rc` transport based on Infiniband/RC with verbs
- Added support for UCT `mlx5_rc` transport based on Infiniband/RC with accelerated verbs
- Added support for UCT `cm` transport based on Infiniband/SIDR (Service ID Resolution)
- Added support for UCT `ugni` transport based on Cray/UGNI
- Added support for Doxygen based documentation generation
- Added support for UCP basic protocol layer to fit PGAS paradigm (RMA, AMO)
- Added ucx_perftest utility to exercise major UCX flows and provide performance metrics
- Added test script for jenkins (contrib/test_jenkins.sh)
- Added packaging for RPM/DEB based linux distributions (see contrib/buildrpm.sh)
- Added Unit-tests infractucture for UCX functionality based on Google Test framework (see test/gtest/)
- Added initial integration for OpenMPI with UCX for PGAS/SHMEM API
  (see: https://github.com/openucx/ompi-mirror/pull/1)
- Added end-to-end testing infrastructure based on MTT (see contrib/mtt/README_MTT)
