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Copyright (c) 2004-2010 The Trustees of Indiana University and Indiana
University Research and Technology
Corporation. All rights reserved.
Copyright (c) 2004-2006 The University of Tennessee and The University
of Tennessee Research Foundation. All rights
reserved.
Copyright (c) 2004-2008 High Performance Computing Center Stuttgart,
University of Stuttgart. All rights reserved.
Copyright (c) 2004-2006 The Regents of the University of California.
All rights reserved.
Copyright (c) 2006-2018 Cisco Systems, Inc. All rights reserved.
Copyright (c) 2006 Voltaire, Inc. All rights reserved.
Copyright (c) 2006 Sun Microsystems, Inc. All rights reserved.
Use is subject to license terms.
Copyright (c) 2006-2018 Los Alamos National Security, LLC. All rights
reserved.
Copyright (c) 2010-2020 IBM Corporation. All rights reserved.
Copyright (c) 2012 Oak Ridge National Labs. All rights reserved.
Copyright (c) 2012 Sandia National Laboratories. All rights reserved.
Copyright (c) 2012 University of Houston. All rights reserved.
Copyright (c) 2013 NVIDIA Corporation. All rights reserved.
Copyright (c) 2013-2018 Intel, Inc. All rights reserved.
Copyright (c) 2018-2021 Amazon.com, Inc. or its affiliates. All Rights
reserved.
Copyright (c) 2019-2021 Triad National Security, LLC. All rights
reserved.
Copyright (c) 2021 Google, LLC. All rights reserved.
$COPYRIGHT$
Additional copyrights may follow
$HEADER$
===========================================================================
This file contains the main features as well as overviews of specific
bug fixes (and other actions) for each version of Open MPI since
version 1.0.
As more fully described in the "Software Version Number" section in
the README file, Open MPI typically releases two separate version
series simultaneously. Since these series have different goals and
are semi-independent of each other, a single NEWS-worthy item may be
introduced into different series at different times. For example,
feature F was introduced in the vA.B series at version vA.B.C, and was
later introduced into the vX.Y series at vX.Y.Z.
The first time feature F is released, the item will be listed in the
vA.B.C section, denoted as:
(** also to appear: X.Y.Z) -- indicating that this item is also
likely to be included in future release
version vX.Y.Z.
When vX.Y.Z is later released, the same NEWS-worthy item will also be
included in the vX.Y.Z section and be denoted as:
(** also appeared: A.B.C) -- indicating that this item was previously
included in release version vA.B.C.
4.1.1 -- April, 2021
--------------------
- Fix a number of datatype issues, including an issue with
improper handling of partial datatypes that could lead to
an unexpected application failure.
- Change UCX PML to not warn about MPI_Request leaks during
MPI_FINALIZE by default. The old behavior can be restored with
the mca_pml_ucx_request_leak_check MCA parameter.
- Reverted temporary solution that worked around launch issues in
SLURM v20.11.{0,1,2}. SchedMD encourages users to avoid these
versions and to upgrade to v20.11.3 or newer.
- Updated PMIx to v3.2.2.
- Fixed configuration issue on Apple Silicon observed with
Homebrew. Thanks to François-Xavier Coudert for reporting the issue.
- Disabled gcc built-in atomics by default on aarch64 platforms.
- Disabled UCX PML when UCX v1.8.0 is detected. UCX version 1.8.0 has a bug that
may cause data corruption when its TCP transport is used in conjunction with
the shared memory transport. UCX versions prior to v1.8.0 are not affected by
this issue. Thanks to @ksiazekm for reporting the issue.
- Fixed detection of available UCX transports/devices to better inform PML
prioritization.
- Fixed SLURM support to mark ORTE daemons as non-MPI tasks.
- Improved AVX detection to more accurately detect supported
platforms. Also improved the generated AVX code, and switched to
using word-based MCA params for the op/avx component (vs. numeric
big flags).
- Improved OFI compatibility support and fixed memory leaks in error
handling paths.
- Improved HAN collectives with support for Barrier and Scatter. Thanks
to @EmmanuelBRELLE for these changes and the relevant bug fixes.
- Fixed MPI debugger support (i.e., the MPIR_Breakpoint() symbol).
Thanks to @louisespellacy-arm for reporting the issue.
- Fixed ORTE bug that prevented debuggers from reading MPIR_Proctable.
- Removed PML uniformity check from the UCX PML to address performance
regression.
- Fixed MPI_Init_thread(3) statement about C++ binding and update
references about MPI_THREAD_MULTIPLE. Thanks to Andreas Lösel for
bringing the outdated docs to our attention.
- Added fence_nb to Flux PMIx support to address segmentation faults.
- Ensured progress of AIO requests in the POSIX FBTL component to
prevent exceeding maximum number of pending requests on MacOS.
- Used OPAL's mutli-thread support in the orted to leverage atomic
operations for object refcounting.
- Fixed segv when launching with static TCP ports.
- Fixed --debug-daemons mpirun CLI option.
- Fixed bug where mpirun did not honor --host in a managed job
allocation.
- Made a managed allocation filter a hostfile/hostlist.
- Fixed bug to marked a generalized request as pending once initiated.
- Fixed external PMIx v4.x check.
- Fixed OSHMEM build with `--enable-mem-debug`.
- Fixed a performance regression observed with older versions of GCC when
__ATOMIC_SEQ_CST is used. Thanks to @BiplabRaut for reporting the issue.
- Fixed buffer allocation bug in the binomial tree scatter algorithm when
non-contiguous datatypes are used. Thanks to @sadcat11 for reporting the issue.
- Fixed bugs related to the accumulate and atomics functionality in the
osc/rdma component.
- Fixed race condition in MPI group operations observed with
MPI_THREAD_MULTIPLE threading level.
- Fixed a deadlock in the TCP BTL's connection matching logic.
- Fixed pml/ob1 compilation error when CUDA support is enabled.
- Fixed a build issue with Lustre caused by unnecessary header includes.
- Fixed a build issue with IMB LSF workload manager.
- Fixed linker error with UCX SPML.
4.1.0 -- December, 2020
-----------------------
- collectives: Add HAN and ADAPT adaptive collectives components.
Both components are off by default and can be enabled by specifying
"mpirun --mca coll_adapt_priority 100 --mca coll_han_priority 100 ...".
We intend to enable both by default in Open MPI 5.0.
- OMPIO is now the default for MPI-IO on all filesystems, including
Lustre (prior to this, ROMIO was the default for Lustre). Many
thanks to Mark Dixon for identifying MPI I/O issues and providing
access to Lustre systems for testing.
- Updates for macOS Big Sur. Thanks to FX Coudert for reporting this
issue and pointing to a solution.
- Minor MPI one-sided RDMA performance improvements.
- Fix hcoll MPI_SCATTERV with MPI_IN_PLACE.
- Add AVX support for MPI collectives.
- Updates to mpirun(1) about "slots" and PE=x values.
- Fix buffer allocation for large environment variables. Thanks to
@zrss for reporting the issue.
- Upgrade the embedded OpenPMIx to v3.2.2.
- Take more steps towards creating fully Reproducible builds (see
https://reproducible-builds.org/). Thanks Bernhard M. Wiedemann for
bringing this to our attention.
- Fix issue with extra-long values in MCA files. Thanks to GitHub
user @zrss for bringing the issue to our attention.
- UCX: Fix zero-sized datatype transfers.
- Fix --cpu-list for non-uniform modes.
- Fix issue in PMIx callback caused by missing memory barrier on Arm platforms.
- OFI MTL: Various bug fixes.
- Fixed issue where MPI_TYPE_CREATE_RESIZED would create a datatype
with unexpected extent on oddly-aligned datatypes.
- collectives: Adjust default tuning thresholds for many collective
algorithms
- runtime: fix situation where rank-by argument does not work
- Portals4: Clean up error handling corner cases
- runtime: Remove --enable-install-libpmix option, which has not
worked since it was added
- opal: Disable memory patcher component on MacOS
- UCX: Allow UCX 1.8 to be used with the btl uct
- UCX: Replace usage of the deprecated NB API of UCX with NBX
- OMPIO: Add support for the IME file system
- OFI/libfabric: Added support for multiple NICs
- OFI/libfabric: Added support for Scalable Endpoints
- OFI/libfabric: Added btl for one-sided support
- OFI/libfabric: Multiple small bugfixes
- libnbc: Adding numerous performance-improving algorithms
4.0.5 -- August, 2020
---------------------
- Fix a problem with MPI RMA compare and swap operations. Thanks
to Wojciech Chlapek for reporting.
- Disable binding of MPI processes to system resources by Open MPI
if an application is launched using SLURM's srun command.
- Disable building of the Fortran mpi_f08 module when configuring
Open MPI with default 8 byte Fortran integer size. Thanks to
@ahcien for reporting.
- Fix a problem with mpirun when the --map-by option is used.
Thanks to Wenbin Lyu for reporting.
- Fix some issues with MPI one-sided operations uncovered using Global
Arrays regression test-suite. Thanks to @bjpalmer for reporting.
- Fix a problem with make check when using the PGI compiler. Thanks to
Carl Ponder for reporting.
- Fix a problem with MPI_FILE_READ_AT_ALL that could lead to application
hangs under certain circumstances. Thanks to Scot Breitenfeld for
reporting.
- Fix a problem building C++ applications with newer versions of GCC.
Thanks to Constantine Khrulev for reporting.
4.0.4 -- June, 2020
-----------------------
- Fix a memory patcher issue intercepting shmat and shmdt. This was
observed on RHEL 8.x ppc64le (see README for more info).
- Fix an illegal access issue caught using gcc's address sanitizer.
Thanks to Georg Geiser for reporting.
- Add checks to avoid conflicts with a libevent library shipped with LSF.
- Switch to linking against libevent_core rather than libevent, if present.
- Add improved support for UCX 1.9 and later.
- Fix an ABI compatibility issue with the Fortran 2008 bindings.
Thanks to Alastair McKinstry for reporting.
- Fix an issue with rpath of /usr/lib64 when building OMPI on
systems with Lustre. Thanks to David Shrader for reporting.
- Fix a memory leak occurring with certain MPI RMA operations.
- Fix an issue with ORTE's mapping of MPI processes to resources.
Thanks to Alex Margolin for reporting and providing a fix.
- Correct a problem with incorrect error codes being returned
by OMPI MPI_T functions.
- Fix an issue with debugger tools not being able to attach
to mpirun more than once. Thanks to Gregory Lee for reporting.
- Fix an issue with the Fortran compiler wrappers when using
NAG compilers. Thanks to Peter Brady for reporting.
- Fix an issue with the ORTE ssh based process launcher at scale.
Thanks to Benjamín Hernández for reporting.
- Address an issue when using shared MPI I/O operations. OMPIO will
now successfully return from the file open statement but will
raise an error if the file system does not supported shared I/O
operations. Thanks to Romain Hild for reporting.
- Fix an issue with MPI_WIN_DETACH. Thanks to Thomas Naughton for reporting.
4.0.3 -- March, 2020
-----------------------
- Update embedded PMIx to 3.1.5
- Add support for Mellanox ConnectX-6.
- Fix an issue in OpenMPI IO when using shared file pointers.
Thanks to Romain Hild for reporting.
- Fix a problem with Open MPI using a previously installed
Fortran mpi module during compilation. Thanks to Marcin
Mielniczuk for reporting
- Fix a problem with Fortran compiler wrappers ignoring use of
disable-wrapper-runpath configure option. Thanks to David
Shrader for reporting.
- Fixed an issue with trying to use mpirun on systems where neither
ssh nor rsh is installed.
- Address some problems found when using XPMEM for intra-node message
transport.
- Improve dimensions returned by MPI_Dims_create for certain
cases. Thanks to @aw32 for reporting.
- Fix an issue when sending messages larger than 4GB. Thanks to
Philip Salzmann for reporting this issue.
- Add ability to specify alternative module file path using
Open MPI's RPM spec file. Thanks to @jschwartz-cray for reporting.
- Clarify use of --with-hwloc configuration option in the README.
Thanks to Marcin Mielniczuk for raising this documentation issue.
- Fix an issue with shmem_atomic_set. Thanks to Sameh Sharkawi for reporting.
- Fix a problem with MPI_Neighbor_alltoall(v,w) for cartesian communicators
with cyclic boundary conditions. Thanks to Ralph Rabenseifner and
Tony Skjellum for reporting.
- Fix an issue using Open MPIO on 32 bit systems. Thanks to
Orion Poplawski for reporting.
- Fix an issue with NetCDF test deadlocking when using the vulcan
Open MPIO component. Thanks to Orion Poplawski for reporting.
- Fix an issue with the mpi_yield_when_idle parameter being ignored
when set in the Open MPI MCA parameter configuration file.
Thanks to @iassiour for reporting.
- Address an issue with Open MPIO when writing/reading more than 2GB
in an operation. Thanks to Richard Warren for reporting.
4.0.2 -- September, 2019
------------------------
- Update embedded PMIx to 3.1.4
- Enhance Open MPI to detect when processes are running in
different name spaces on the same node, in which case the
vader CMA single copy mechanism is disabled. Thanks
to Adrian Reber for reporting and providing a fix.
- Fix an issue with ORTE job tree launch mechanism. Thanks
to @lanyangyang for reporting.
- Fix an issue with env processing when running as root.
Thanks to Simon Byrne for reporting and providing a fix.
- Fix Fortran MPI_FILE_GET_POSITION return code bug.
Thanks to Wei-Keng Liao for reporting.
- Fix user defined datatypes/ops leak in nonblocking base collective
component. Thanks to Andrey Maslennikov for verifying fix.
- Fixed shared memory not working with spawned processes.
Thanks to @rodarima for reporting.
- Fix data corruption of overlapping datatypes on sends.
Thanks to DKRZ for reporting.
- Fix segfault in oob_tcp component on close with active listeners.
Thanks to Orivej Desh for reporting and providing a fix.
- Fix divide by zero segfault in ompio.
Thanks to @haraldkl for reporting and providing a fix.
- Fix finalize of flux compnents.
Thanks to Stephen Herbein and Jim Garlick for providing a fix.
- Fix osc_rdma_acc_single_intrinsic regression.
Thanks to Joseph Schuchart for reporting and providing a fix.
- Fix hostnames with large integers.
Thanks to @perrynzhou for reporting and providing a fix.
- Fix Deadlock in MPI_Fetch_and_op when using UCX
Thanks to Joseph Schuchart for reporting.
- Fix the SLURM plm for mpirun-based launching.
Thanks to Jordon Hayes for reporting and providing a fix.
- Prevent grep failure in rpmbuild from aborting.
Thanks to Daniel Letai for reporting.
- Fix btl/vader finalize sequence.
Thanks to Daniel Vollmer for reporting.
- Fix pml/ob1 local handle sent during PUT control message.
Thanks to @EmmanuelBRELLE for reporting and providing a fix.
- Fix Memory leak with persistent MPI sends and the ob1 "get" protocol.
Thanks to @s-kuberski for reporting.
- v4.0.x: mpi: mark MPI_COMBINER_{HVECTOR,HINDEXED,STRUCT}_INTEGER
removed unless configured with --enable-mpi1-compatibility
- Fix make-authors.pl when run in a git submodule.
Thanks to Michael Heinz for reporting and providing a fix.
- Fix deadlock with mpi_assert_allow_overtaking in MPI_Issend.
Thanks to Joseph Schuchart and George Bosilca for reporting.
- Add compilation flag to allow unwinding through files that are
present in the stack when attaching with MPIR.
Thanks to James A Clark for reporting and providing a fix.
Known issues:
- There is a known issue with the OFI libfabric and PSM2 MTLs when trying to send
very long (> 4 GBytes) messages. In this release, these MTLs will catch
this case and abort the transfer. A future release will provide a
better solution to this issue.
4.0.1 -- March, 2019
--------------------
- Update embedded PMIx to 3.1.2.
- Fix an issue with Vader (shared-memory) transport on OS-X. Thanks
to Daniel Vollmer for reporting.
- Fix a problem with the usNIC BTL Makefile. Thanks to George Marselis
for reporting.
- Fix an issue when using --enable-visibility configure option
and older versions of hwloc. Thanks to Ben Menadue for reporting
and providing a fix.
- Fix an issue with MPI_WIN_CREATE_DYNAMIC and MPI_GET from self.
Thanks to Bart Janssens for reporting.
- Fix an issue of excessive compiler warning messages from mpi.h
when using newer C++ compilers. Thanks to @Shadow-fax for
reporting.
- Fix a problem when building Open MPI using clang 5.0.
- Fix a problem with MPI_WIN_CREATE when using UCX. Thanks
to Adam Simpson for reporting.
- Fix a memory leak encountered for certain MPI datatype
destructor operations. Thanks to Axel Huebl for reporting.
- Fix several problems with MPI RMA accumulate operations.
Thanks to Jeff Hammond for reporting.
- Fix possible race condition in closing some file descriptors
during job launch using mpirun. Thanks to Jason Williams
for reporting and providing a fix.
- Fix a problem in OMPIO for large individual write operations.
Thanks to Axel Huebl for reporting.
- Fix a problem with parsing of map-by ppr options to mpirun.
Thanks to David Rich for reporting.
- Fix a problem observed when using the mpool hugepage component. Thanks
to Hunter Easterday for reporting and fixing.
- Fix valgrind warning generated when invoking certain MPI Fortran
data type creation functions. Thanks to @rtoijala for reporting.
- Fix a problem when trying to build with a PMIX 3.1 or newer
release. Thanks to Alastair McKinstry for reporting.
- Fix a problem encountered with building MPI F08 module files.
Thanks to Igor Andriyash and Axel Huebl for reporting.
- Fix two memory leaks encountered for certain MPI-RMA usage patterns.
Thanks to Joseph Schuchart for reporting and fixing.
- Fix a problem with the ORTE rmaps_base_oversubscribe MCA paramater.
Thanks to @iassiour for reporting.
- Fix a problem with UCX PML default error handler for MPI communicators.
Thanks to Marcin Krotkiewski for reporting.
- Fix various issues with OMPIO uncovered by the testmpio test suite.
4.0.0 -- September, 2018
------------------------
- OSHMEM updated to the OpenSHMEM 1.4 API.
- Do not build OpenSHMEM layer when there are no SPMLs available.
Currently, this means the OpenSHMEM layer will only build if
a MXM or UCX library is found.
- A UCX BTL was added for enhanced MPI RMA support using UCX
- With this release, OpenIB BTL now only supports iWarp and RoCE by default.
- Updated internal HWLOC to 2.0.2
- Updated internal PMIx to 3.0.2
- Change the priority for selecting external verses internal HWLOC
and PMIx packages to build. Starting with this release, configure
by default selects available external HWLOC and PMIx packages over
the internal ones.
- Updated internal ROMIO to 3.2.1.
- Removed support for the MXM MTL.
- Removed support for SCIF.
- Improved CUDA support when using UCX.
- Enable use of CUDA allocated buffers for OMPIO.
- Improved support for two phase MPI I/O operations when using OMPIO.
- Added support for Software-based Performance Counters, see
https://github.com/davideberius/ompi/wiki/How-to-Use-Software-Based-Performance-Counters-(SPCs)-in-Open-MPI
- Change MTL OFI from opting-IN on "psm,psm2,gni" to opting-OUT on
"shm,sockets,tcp,udp,rstream"
- Various improvements to MPI RMA performance when using RDMA
capable interconnects.
- Update memkind component to use the memkind 1.6 public API.
- Fix a problem with javadoc builds using OpenJDK 11. Thanks to
Siegmar Gross for reporting.
- Fix a memory leak using UCX. Thanks to Charles Taylor for reporting.
- Fix hangs in MPI_FINALIZE when using UCX.
- Fix a problem with building Open MPI using an external PMIx 2.1.2
library. Thanks to Marcin Krotkiewski for reporting.
- Fix race conditions in Vader (shared memory) transport.
- Fix problems with use of newer map-by mpirun options. Thanks to
Tony Reina for reporting.
- Fix rank-by algorithms to properly rank by object and span
- Allow for running as root of two environment variables are set.
Requested by Axel Huebl.
- Fix a problem with building the Java bindings when using Java 10.
Thanks to Bryce Glover for reporting.
- Fix a problem with ORTE not reporting error messages if an application
terminated normally but exited with non-zero error code. Thanks to
Emre Brookes for reporting.
3.1.6 -- March, 2020
--------------------
- Fix one-sided shared memory window configuration bug.
- Fix support for PGI'18 compiler.
- Fix issue with zero-length blockLength in MPI_TYPE_INDEXED.
- Fix run-time linker issues with OMPIO on newer Linux distros.
- Fix PMIX dstore locking compilation issue. Thanks to Marco Atzeri
for reporting the issue.
- Allow the user to override modulefile_path in the Open MPI SRPM,
even if install_in_opt is set to 1.
- Properly detect ConnectX-6 HCAs in the openib BTL.
- Fix segfault in the MTL/OFI initialization for large jobs.
- Fix issue to guarantee to properly release MPI one-sided lock when
using UCX transports to avoid a deadlock.
- Fix potential deadlock when processing outstanding transfers with
uGNI transports.
- Fix various portals4 control flow bugs.
- Fix communications ordering for alltoall and Cartesian neighborhood
collectives.
- Fix an infinite recursion crash in the memory patcher on systems
with glibc v2.26 or later (e.g., Ubuntu 18.04) when using certain
OS-bypass interconnects.
3.1.5 -- November, 2019
-----------------------
- Fix OMPIO issue limiting file reads/writes to 2GB. Thanks to
Richard Warren for reporting the issue.
- At run time, automatically disable Linux cross-memory attach (CMA)
for vader BTL (shared memory) copies when running in user namespaces
(i.e., containers). Many thanks to Adrian Reber for raising the
issue and providing the fix.
- Sending very large MPI messages using the ofi MTL will fail with
some of the underlying Libfabric transports (e.g., PSM2 with
messages >=4GB, verbs with messages >=2GB). Prior version of Open
MPI failed silently; this version of Open MPI invokes the
appropriate MPI error handler upon failure. See
https://github.com/open-mpi/ompi/issues/7058 for more details.
Thanks to Emmanuel Thomé for raising the issue.
- Fix case where 0-extent datatypes might be eliminated during
optimization. Thanks to Github user @tjahns for raising the issue.
- Ensure that the MPIR_Breakpoint symbol is not optimized out on
problematic platforms.
- Fix MPI one-sided 32 bit atomic support.
- Fix OMPIO offset calculations with SEEK_END and SEEK_CUR in
MPI_FILE_GET_POSITION. Thanks to Wei-keng Liao for raising the
issue.
- Add "naive" regx component that will never fail, no matter how
esoteric the hostnames are.
- Fix corner case for datatype extent computations. Thanks to David
Dickenson for raising the issue.
- Allow individual jobs to set their map/rank/bind policies when
running LSF. Thanks to Nick R. Papior for assistance in solving the
issue.
- Fix MPI buffered sends with the "cm" PML.
- Properly propagate errors to avoid deadlocks in MPI one-sided operations.
- Update to PMIx v2.2.3.
- Fix data corruption in non-contiguous MPI accumulates over UCX.
- Fix ssh-based tree-based spawning at scale. Many thanks to Github
user @zrss for the report and diagnosis.
- Fix the Open MPI RPM spec file to not abort when grep fails. Thanks
to Daniel Letai for bringing this to our attention.
- Handle new SLURM CLI options (SLURM 19 deprecated some options that
Open MPI was using). Thanks to Jordan Hayes for the report and the
initial fix.
- OMPI: fix division by zero with an empty file view.
- Also handle shmat()/shmdt() memory patching with OS-bypass networks.
- Add support for unwinding info to all files that are present in the
stack starting from MPI_Init, which is helpful with parallel
debuggers. Thanks to James Clark for the report and initial fix.
- Fixed inadvertant use of bitwise operators in the MPI C++ bindings
header files. Thanks to Bert Wesarg for the report and the fix.
3.1.4 -- April, 2019
--------------------
- Fix compile error when configured with --enable-mpi-java and
--with-devel-headers. Thanks to @g-raffy for reporting the issue
(** also appeared: v3.0.4).
- Only use hugepages with appropriate permissions. Thanks to Hunter
Easterday for the fix.
- Fix possible floating point rounding and division issues in OMPIO
which led to crashes and/or data corruption with very large data.
Thanks to Axel Huebl and René Widera for identifing the issue,
supplying and testing the fix (** also appeared: v3.0.4).
- Use static_cast<> in mpi.h where appropriate. Thanks to @shadow-fx
for identifying the issue (** also appeared: v3.0.4).
- Fix RMA accumulate of non-predefined datatypes with predefined
operators. Thanks to Jeff Hammond for raising the issue (** also
appeared: v3.0.4).
- Fix race condition when closing open file descriptors when launching
MPI processes. Thanks to Jason Williams for identifying the issue and
supplying the fix (** also appeared: v3.0.4).
- Fix support for external PMIx v3.1.x.
- Fix Valgrind warnings for some MPI_TYPE_CREATE_* functions. Thanks
to Risto Toijala for identifying the issue and supplying the fix (**
also appeared: v3.0.4).
- Fix MPI_TYPE_CREATE_F90_{REAL,COMPLEX} for r=38 and r=308 (** also
appeared: v3.0.4).
- Fix assembly issues with old versions of gcc (<6.0.0) that affected
the stability of shared memory communications (e.g., with the vader
BTL) (** also appeared: v3.0.4).
- Fix MPI_Allreduce crashes with some cases in the coll/spacc module.
- Fix the OFI MTL handling of MPI_ANY_SOURCE (** also appeared:
v3.0.4).
- Fix noisy errors in the openib BTL with regards to
ibv_exp_query_device(). Thanks to Angel Beltre and others who
reported the issue (** also appeared: v3.0.4).
- Fix zero-size MPI one-sided windows with UCX.
3.1.3 -- October, 2018
----------------------
- Fix race condition in MPI_THREAD_MULTIPLE support of non-blocking
send/receive path.
- Fix error handling SIGCHLD forwarding.
- Add support for CHARACTER and LOGICAL Fortran datatypes for MPI_SIZEOF.
- Fix compile error when using OpenJDK 11 to compile the Java bindings.
- Fix crash when using a hostfile with a 'user@host' line.
- Numerous Fortran '08 interface fixes.
- TCP BTL error message fixes.
- OFI MTL now will use any provider other than shm, sockets, tcp, udp, or
rstream, rather than only supporting gni, psm, and psm2.
- Disable async receive of CUDA buffers by default, fixing a hang
on large transfers.
- Support the BCM57XXX and BCM58XXX Broadcomm adapters.
- Fix minmax datatype support in ROMIO.
- Bug fixes in vader shared memory transport.
- Support very large buffers with MPI_TYPE_VECTOR.
- Fix hang when launching with mpirun on Cray systems.
3.1.2 -- August, 2018
------------------------
- A subtle race condition bug was discovered in the "vader" BTL
(shared memory communications) that, in rare instances, can cause
MPI processes to crash or incorrectly classify (or effectively drop)
an MPI message sent via shared memory. If you are using the "ob1"
PML with "vader" for shared memory communication (note that vader is
the default for shared memory communication with ob1), you need to
upgrade to v3.1.2 or later to fix this issue. You may also upgrade
to the following versions to fix this issue:
- Open MPI v2.1.5 (expected end of August, 2018) or later in the
v2.1.x series
- Open MPI v3.0.1 (released March, 2018) or later in the v3.0.x
series
- Assorted Portals 4.0 bug fixes.
- Fix for possible data corruption in MPI_BSEND.
- Move shared memory file for vader btl into /dev/shm on Linux.
- Fix for MPI_ISCATTER/MPI_ISCATTERV Fortran interfaces with MPI_IN_PLACE.
- Upgrade PMIx to v2.1.3.
- Numerous One-sided bug fixes.
- Fix for race condition in uGNI BTL.
- Improve handling of large number of interfaces with TCP BTL.
- Numerous UCX bug fixes.
3.1.1 -- June, 2018
-------------------
- Fix potential hang in UCX PML during MPI_FINALIZE
- Update internal PMIx to v2.1.2rc2 to fix forward version compatibility.
- Add new MCA parameter osc_sm_backing_store to allow users to specify
where in the filesystem the backing file for the shared memory
one-sided component should live. Defaults to /dev/shm on Linux.
- Fix potential hang on non-x86 platforms when using builds with
optimization flags turned off.
- Disable osc/pt2pt when using MPI_THREAD_MULTIPLE due to numerous
race conditions in the component.
- Fix dummy variable names for the mpi and mpi_f08 Fortran bindings to
match the MPI standard. This may break applications which use
name-based parameters in Fortran which used our internal names
rather than those documented in the MPI standard.
- Revamp Java detection to properly handle new Java versions which do
not provide a javah wrapper.
- Fix RMA function signatures for use-mpi-f08 bindings to have the
asynchonous property on all buffers.
- Improved configure logic for finding the UCX library.
3.1.0 -- May, 2018
------------------
- Various OpenSHMEM bug fixes.
- Properly handle array_of_commands argument to Fortran version of
MPI_COMM_SPAWN_MULTIPLE.
- Fix bug with MODE_SEQUENTIAL and the sharedfp MPI-IO component.
- Use "javac -h" instead of "javah" when building the Java bindings
with a recent version of Java.
- Fix mis-handling of jostepid under SLURM that could cause problems
with PathScale/OmniPath NICs.
- Disable the POWER 7/BE block in configure. Note that POWER 7/BE is
still not a supported platform, but it is no longer automatically
disabled. See
https://github.com/open-mpi/ompi/issues/4349#issuecomment-374970982
for more information.
- The output-filename option for mpirun is now converted to an
absolute path before being passed to other nodes.
- Add monitoring component for PML, OSC, and COLL to track data
movement of MPI applications. See
ompi/mca/commmon/monitoring/HowTo_pml_monitoring.tex for more
information about the monitoring framework.
- Add support for communicator assertions: mpi_assert_no_any_tag,
mpi_assert_no_any_source, mpi_assert_exact_length, and
mpi_assert_allow_overtaking.
- Update PMIx to version 2.1.1.
- Update hwloc to 1.11.7.
- Many one-sided behavior fixes.
- Improved performance for Reduce and Allreduce using Rabenseifner's algorithm.
- Revamped mpirun --help output to make it a bit more manageable.
- Portals4 MTL improvements: Fix race condition in rendezvous protocol and
retry logic.
- UCX OSC: initial implementation.
- UCX PML improvements: add multi-threading support.
- Yalla PML improvements: Fix error with irregular contiguous datatypes.
- Openib BTL: disable XRC support by default.
- TCP BTL: Add check to detect and ignore connections from processes
that aren't MPI (such as IDS probes) and verify that source and
destination are using the same version of Open MPI, fix issue with very
large message transfer.
- ompi_info parsable output now escapes double quotes in values, and
also quotes values can contains colons. Thanks to Lev Givon for the
suggestion.
- CUDA-aware support can now handle GPUs within a node that do not
support CUDA IPC. Earlier versions would get error and abort.
- Add a mca parameter ras_base_launch_orted_on_hn to allow for launching
MPI processes on the same node where mpirun is executing using a separate
orte daemon, rather than the mpirun process. This may be useful to set to
true when using SLURM, as it improves interoperability with SLURM's signal
propagation tools. By default it is set to false, except for Cray XC systems.
- Remove LoadLeveler RAS support.
- Remove IB XRC support from the OpenIB BTL due to lack of support.
- Add functionality for IBM s390 platforms. Note that regular
regression testing does not occur on the s390 and it is not
considered a supported platform.
- Remove support for big endian PowerPC.
- Remove support for XL compilers older than v13.1.
- Remove support for atomic operations using MacOS atomics library.
3.0.6 -- March, 2020
--------------------
- Fix one-sided shared memory window configuration bug.
- Fix support for PGI'18 compiler.
- Fix run-time linker issues with OMPIO on newer Linux distros.
- Allow the user to override modulefile_path in the Open MPI SRPM,
even if install_in_opt is set to 1.
- Properly detect ConnectX-6 HCAs in the openib BTL.
- Fix segfault in the MTL/OFI initialization for large jobs.
- Fix various portals4 control flow bugs.
- Fix communications ordering for alltoall and Cartesian neighborhood
collectives.
- Fix an infinite recursion crash in the memory patcher on systems
with glibc v2.26 or later (e.g., Ubuntu 18.04) when using certain
OS-bypass interconnects.
3.0.5 -- November, 2019
-----------------------
- Fix OMPIO issue limiting file reads/writes to 2GB. Thanks to
Richard Warren for reporting the issue.
- At run time, automatically disable Linux cross-memory attach (CMA)
for vader BTL (shared memory) copies when running in user namespaces
(i.e., containers). Many thanks to Adrian Reber for raising the
issue and providing the fix.
- Sending very large MPI messages using the ofi MTL will fail with
some of the underlying Libfabric transports (e.g., PSM2 with
messages >=4GB, verbs with messages >=2GB). Prior version of Open
MPI failed silently; this version of Open MPI invokes the
appropriate MPI error handler upon failure. See
https://github.com/open-mpi/ompi/issues/7058 for more details.
Thanks to Emmanuel Thomé for raising the issue.
- Fix case where 0-extent datatypes might be eliminated during
optimization. Thanks to Github user @tjahns for raising the issue.
- Ensure that the MPIR_Breakpoint symbol is not optimized out on
problematic platforms.
- Fix OMPIO offset calculations with SEEK_END and SEEK_CUR in
MPI_FILE_GET_POSITION. Thanks to Wei-keng Liao for raising the
issue.
- Fix corner case for datatype extent computations. Thanks to David
Dickenson for raising the issue.
- Fix MPI buffered sends with the "cm" PML.
- Update to PMIx v2.2.3.
- Fix ssh-based tree-based spawning at scale. Many thanks to Github
user @zrss for the report and diagnosis.
- Fix the Open MPI RPM spec file to not abort when grep fails. Thanks
to Daniel Letai for bringing this to our attention.
- Handle new SLURM CLI options (SLURM 19 deprecated some options that
Open MPI was using). Thanks to Jordan Hayes for the report and the
initial fix.
- OMPI: fix division by zero with an empty file view.
- Also handle shmat()/shmdt() memory patching with OS-bypass networks.
- Add support for unwinding info to all files that are present in the
stack starting from MPI_Init, which is helpful with parallel
debuggers. Thanks to James Clark for the report and initial fix.
- Fixed inadvertant use of bitwise operators in the MPI C++ bindings
header files. Thanks to Bert Wesarg for the report and the fix.
- Added configure option --disable-wrappers-runpath (alongside the
already-existing --disable-wrappers-rpath option) to prevent Open
MPI's configure script from automatically adding runpath CLI options
to the wrapper compilers.
3.0.4 -- April, 2019
--------------------
- Fix compile error when configured with --enable-mpi-java and
--with-devel-headers. Thanks to @g-raffy for reporting the issue.
- Fix possible floating point rounding and division issues in OMPIO
which led to crashes and/or data corruption with very large data.
Thanks to Axel Huebl and René Widera for identifing the issue,
supplying and testing the fix (** also appeared: v3.0.4).
- Use static_cast<> in mpi.h where appropriate. Thanks to @shadow-fx
for identifying the issue.
- Fix datatype issue with RMA accumulate. Thanks to Jeff Hammond for
raising the issue.
- Fix RMA accumulate of non-predefined datatypes with predefined
operators. Thanks to Jeff Hammond for raising the issue.
- Fix race condition when closing open file descriptors when launching
MPI processes. Thanks to Jason Williams for identifying the issue and
supplying the fix.
- Fix Valgrind warnings for some MPI_TYPE_CREATE_* functions. Thanks
to Risto Toijala for identifying the issue and supplying the fix.
- Fix MPI_TYPE_CREATE_F90_{REAL,COMPLEX} for r=38 and r=308.
- Fix assembly issues with old versions of gcc (<6.0.0) that affected
the stability of shared memory communications (e.g., with the vader
BTL).
- Fix the OFI MTL handling of MPI_ANY_SOURCE.
- Fix noisy errors in the openib BTL with regards to
ibv_exp_query_device(). Thanks to Angel Beltre and others who
reported the issue.
3.0.3 -- October, 2018
----------------------
- Fix race condition in MPI_THREAD_MULTIPLE support of non-blocking
send/receive path.
- Fix error handling SIGCHLD forwarding.
- Add support for CHARACTER and LOGICAL Fortran datatypes for MPI_SIZEOF.
- Fix compile error when using OpenJDK 11 to compile the Java bindings.
- Fix crash when using a hostfile with a 'user@host' line.
- Numerous Fortran '08 interface fixes.
- TCP BTL error message fixes.
- OFI MTL now will use any provider other than shm, sockets, tcp, udp, or
rstream, rather than only supporting gni, psm, and psm2.
- Disable async receive of CUDA buffers by default, fixing a hang
on large transfers.
- Support the BCM57XXX and BCM58XXX Broadcomm adapters.
- Fix minmax datatype support in ROMIO.
- Bug fixes in vader shared memory transport.
- Support very large buffers with MPI_TYPE_VECTOR.
- Fix hang when launching with mpirun on Cray systems.
- Bug fixes in OFI MTL.
- Assorted Portals 4.0 bug fixes.
- Fix for possible data corruption in MPI_BSEND.
- Move shared memory file for vader btl into /dev/shm on Linux.
- Fix for MPI_ISCATTER/MPI_ISCATTERV Fortran interfaces with MPI_IN_PLACE.
- Upgrade PMIx to v2.1.4.
- Fix for Power9 built-in atomics.
- Numerous One-sided bug fixes.
- Fix for race condition in uGNI BTL.
- Improve handling of large number of interfaces with TCP BTL.
- Numerous UCX bug fixes.
- Add support for QLogic and Broadcom Cumulus RoCE HCAs to Open IB BTL.
- Add patcher support for aarch64.
- Fix hang on Power and ARM when Open MPI was built with low compiler
optimization settings.
3.0.2 -- June, 2018
-------------------
- Disable osc/pt2pt when using MPI_THREAD_MULTIPLE due to numerous
race conditions in the component.
- Fix dummy variable names for the mpi and mpi_f08 Fortran bindings to
match the MPI standard. This may break applications which use
name-based parameters in Fortran which used our internal names
rather than those documented in the MPI standard.
- Fixed MPI_SIZEOF in the "mpi" Fortran module for the NAG compiler.
- Fix RMA function signatures for use-mpi-f08 bindings to have the
asynchonous property on all buffers.
- Fix Fortran MPI_COMM_SPAWN_MULTIPLE to properly follow the count
length argument when parsing the array_of_commands variable.
- Revamp Java detection to properly handle new Java versions which do
not provide a javah wrapper.
- Improved configure logic for finding the UCX library.
- Add support for HDR InfiniBand link speeds.
- Disable the POWER 7/BE block in configure. Note that POWER 7/BE is
still not a supported platform, but it is no longer automatically
disabled. See
https://github.com/open-mpi/ompi/issues/4349#issuecomment-374970982
for more information.
3.0.1 -- March, 2018
----------------------
- Fix ability to attach parallel debuggers to MPI processes.
- Fix a number of issues in MPI I/O found by the HDF5 test suite.
- Fix (extremely) large message transfers with shared memory.
- Fix out of sequence bug in multi-NIC configurations.
- Fix stdin redirection bug that could result in lost input.
- Disable the LSF launcher if CSM is detected.
- Plug a memory leak in MPI_Mem_free(). Thanks to Philip Blakely for reporting.
- Fix the tree spawn operation when the number of nodes is larger than the radix.
Thanks to Carlos Eduardo de Andrade for reporting.
- Fix Fortran 2008 macro in MPI extensions. Thanks to Nathan T. Weeks for
reporting.
- Add UCX to list of interfaces that OpenSHMEM will use by default.
- Add --{enable|disable}-show-load-errors-by-default to control
default behavior of the load errors option.
- OFI MTL improvements: handle empty completion queues properly, fix
incorrect error message around fi_getinfo(), use default progress
option for provider by default, Add support for reading multiple
CQ events in ofi_progress.
- PSM2 MTL improvements: Allow use of GPU buffers, thread fixes.
- Numerous corrections to memchecker behavior.
- Add a mca parameter ras_base_launch_orted_on_hn to allow for launching
MPI processes on the same node where mpirun is executing using a separate
orte daemon, rather than the mpirun process. This may be useful to set to
true when using SLURM, as it improves interoperability with SLURM's signal
propagation tools. By default it is set to false, except for Cray XC systems.
- Fix a problem reported on the mailing separately by Kevin McGrattan and Stephen
Guzik about consistency issues on NFS file systems when using OMPIO. This fix
also introduces a new mca parameter fs_ufs_lock_algorithm which allows to
control the locking algorithm used by ompio for read/write operations. By
default, ompio does not perfom locking on local UNIX file systems, locks the
entire file per operation on NFS file systems, and selective byte-range
locking on other distributed file systems.
- Add an mca parameter pmix_server_usock_connections to allow mpirun to
support applications statically built against the Open MPI v2.x release,
or installed in a container along with the Open MPI v2.x libraries. It is
set to false by default.
3.0.0 -- September, 2017
------------------------
Major new features:
- Use UCX allocator for OSHMEM symmetric heap allocations to optimize intra-node
data transfers. UCX SPML only.
- Use UCX multi-threaded API in the UCX PML. Requires UCX 1.0 or later.
- Added support for Flux PMI
- Update embedded PMIx to version 2.1.0
- Update embedded hwloc to version 1.11.7
Changes in behavior compared to prior versions:
- Per Open MPI's versioning scheme (see the README), increasing the
major version number to 3 indicates that this version is not
ABI-compatible with prior versions of Open MPI. In addition, there may
be differences in MCA parameter names and defaults from previous releases.
Command line options for mpirun and other commands may also differ from
previous versions. You will need to recompile MPI and OpenSHMEM applications
to work with this version of Open MPI.
- With this release, Open MPI supports MPI_THREAD_MULTIPLE by default.
- New configure options have been added to specify the locations of libnl
and zlib.
- A new configure option has been added to request Flux PMI support.
- The help menu for mpirun and related commands is now context based.
"mpirun --help compatibility" generates the help menu in the same format
as previous releases.
Removed legacy support:
- AIX is no longer supported.
- Loadlever is no longer supported.
- OpenSHMEM currently supports the UCX and MXM transports via the ucx and ikrit
SPMLs respectively.
- Remove IB XRC support from the OpenIB BTL due to lack of support.
- Remove support for big endian PowerPC.
- Remove support for XL compilers older than v13.1
Known issues:
- MPI_Connect/accept between applications started by different mpirun
commands will fail, even if ompi-server is running.
2.1.5 -- August 2018
--------------------
- A subtle race condition bug was discovered in the "vader" BTL
(shared memory communications) that, in rare instances, can cause
MPI processes to crash or incorrectly classify (or effectively drop)
an MPI message sent via shared memory. If you are using the "ob1"
PML with "vader" for shared memory communication (note that vader is
the default for shared memory communication with ob1), you need to
upgrade to v2.1.5 to fix this issue. You may also upgrade to the
following versions to fix this issue:
- Open MPI v3.0.1 (released March, 2018) or later in the v3.0.x
series
- Open MPI v3.1.2 (expected end of August, 2018) or later
- A link issue was fixed when the UCX library was not located in the
linker-default search paths.
2.1.4 -- August, 2018
---------------------
Bug fixes/minor improvements:
- Disable the POWER 7/BE block in configure. Note that POWER 7/BE is
still not a supported platform, but it is no longer automatically
disabled. See
https://github.com/open-mpi/ompi/issues/4349#issuecomment-374970982
for more information.
- Fix bug with request-based one-sided MPI operations when using the
"rdma" component.
- Fix issue with large data structure in the TCP BTL causing problems
in some environments. Thanks to @lgarithm for reporting the issue.
- Minor Cygwin build fixes.
- Minor fixes for the openib BTL:
- Support for the QLogic RoCE HCA
- Support for the Boradcom Cumulus RoCE HCA
- Enable support for HDR link speeds
- Fix MPI_FINALIZED hang if invoked from an attribute destructor
during the MPI_COMM_SELF destruction in MPI_FINALIZE. Thanks to
@AndrewGaspar for reporting the issue.
- Java fixes:
- Modernize Java framework detection, especially on OS X/MacOS.
Thanks to Bryce Glover for reporting and submitting the fixes.
- Prefer "javac -h" to "javah" to support newer Java frameworks.
- Fortran fixes:
- Use conformant dummy parameter names for Fortran bindings. Thanks
to Themos Tsikas for reporting and submitting the fixes.
- Build the MPI_SIZEOF() interfaces in the "TKR"-style "mpi" module
whenever possible. Thanks to Themos Tsikas for reporting the
issue.
- Fix array of argv handling for the Fortran bindings of
MPI_COMM_SPAWN_MULTIPLE (and its associated man page).
- Make NAG Fortran compiler support more robust in configure.
- Disable the "pt2pt" one-sided MPI component when MPI_THREAD_MULTIPLE
is used. This component is simply not safe in MPI_THREAD_MULTIPLE
scenarios, and will not be fixed in the v2.1.x series.
- Make the "external" hwloc component fail gracefully if it is tries
to use an hwloc v2.x.y installation. hwloc v2.x.y will not be
supported in the Open MPI v2.1.x series.
- Fix "vader" shared memory support for messages larger than 2GB.
Thanks to Heiko Bauke for the bug report.
- Configure fixes for external PMI directory detection. Thanks to
Davide Vanzo for the report.
2.1.3 -- March, 2018
--------------------
Bug fixes/minor improvements:
- Update internal PMIx version to 1.2.5.
- Fix a problem with ompi_info reporting using param option.
Thanks to Alexander Pozdneev for reporting.
- Correct PMPI_Aint_{add|diff} to be functions (not subroutines)
in the Fortran mpi_f08 module.
- Fix a problem when doing MPI I/O using data types with large
extents in conjunction with MPI_TYPE_CREATE_SUBARRAY. Thanks to
Christopher Brady for reporting.
- Fix a problem when opening many files using MPI_FILE_OPEN.
Thanks to William Dawson for reporting.
- Fix a problem with debuggers failing to attach to a running job.
Thanks to Dirk Schubert for reporting.
- Fix a problem when using madvise and the OpenIB BTL. Thanks to
Timo Bingmann for reporting.
- Fix a problem in the Vader BTL that resulted in failures of
IMB under certain circumstances. Thanks to Nicolas Morey-
Chaisemartin for reporting.
- Fix a problem preventing Open MPI from working under Cygwin.
Thanks to Marco Atzeri for reporting.
- Reduce some verbosity being emitted by the USNIC BTL under certain
circumstances. Thanks to Peter Forai for reporting.
- Fix a problem with misdirection of SIGKILL. Thanks to Michael Fern
for reporting.
- Replace use of posix_memalign with malloc for small allocations. Thanks
to Ben Menaude for reporting.
- Fix a problem with Open MPI's out of band TCP network for file descriptors
greater than 32767. Thanks to Wojtek Wasko for reporting and fixing.
- Plug a memory leak in MPI_Mem_free(). Thanks to Philip Blakely for reporting.
2.1.2 -- September, 2017
------------------------
Bug fixes/minor improvements:
- Update internal PMIx version to 1.2.3.
- Fix some problems when using the NAG Fortran compiler to build Open MPI
and when using the compiler wrappers. Thanks to Neil Carlson for reporting.
- Fix a compilation problem with the SM BTL. Thanks to Paul Hargrove for
reporting.
- Fix a problem with MPI_IALLTOALLW when using zero-length messages.
Thanks to Dahai Guo for reporting.
- Fix a problem with C11 generic type interface for SHMEM_G. Thanks
to Nick Park for reporting.
- Switch to using the lustreapi.h include file when building Open MPI
with Lustre support.