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164 changes: 157 additions & 7 deletions NEWS
Original file line number Diff line number Diff line change
Expand Up @@ -20,6 +20,8 @@ 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) 2013-2017 Intel, Inc. All rights reserved.
Copyright (c) 2018 Amazon.com, Inc. or its affiliates. All Rights
reserved.
$COPYRIGHT$

Additional copyrights may follow
Expand Down Expand Up @@ -53,7 +55,7 @@ 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.

3.1.0 -- January, 2018
3.1.0 -- March, 2018
----------------------

- The output-filename option for mpirun is now converted to an
Expand Down Expand Up @@ -99,23 +101,171 @@ included in the vX.Y.Z section and be denoted as:
- Remove support for XL compilers older than v13.1.
- Remove support for atomic operations using MacOS atomics library.

3.0.0 -- July, 2017
-------------------
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:
- "yoda" SPML component is removed from the Open SHMEM codebase. It was utilizing
Open MPI BTL components for supported networks. Please see README for the currently
available options.
- 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:

Known issues (to be addressed in v3.0.1):
- MPI_Connect/accept between applications started by different mpirun
commands will fail, even if ompi-server is running.

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.
- Fix a problem in the OB1 PML that led to hangs with OSU collective tests.
- Fix a progression issue with MPI_WIN_FLUSH_LOCAL. Thanks to
Joseph Schuchart for reporting.
- Fix an issue with recent versions of PBSPro requiring libcrypto.
Thanks to Petr Hanousek for reporting.
- Fix a problem when using MPI_ANY_SOURCE with MPI_SENDRECV.
- Fix an issue that prevented signals from being propagated to ORTE
daemons.
- Ensure that signals are forwarded from ORTE daemons to all processes
in the process group created by the daemons. Thanks to Ted Sussman
for reporting.
- Fix a problem with launching a job under a debugger. Thanks to
Greg Lee for reporting.
- Fix a problem with Open MPI native I/O MPI_FILE_OPEN when using
a communicator having an associated topology. Thanks to
Wei-keng Liao for reporting.
- Fix an issue when using MPI_ACCUMULATE with derived datatypes.
- Fix a problem with Fortran bindings that led to compilation errors
for user defined reduction operations. Thanks to Nathan Weeks for
reporting.
- Fix ROMIO issues with large writes/reads when using NFS file systems.
- Fix definition of Fortran MPI_ARGV_NULL and MPI_ARGVS_NULL.
- Enable use of the head node of a SLURM allocation on Cray XC systems.
- Fix a problem with synchronous sends when using the UCX PML.
- Use default socket buffer size to improve TCP BTL performance.
- 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 --without-lsf when lsf is installed in the default search path.
- Remove support for big endian PowerPC.
- Remove support for XL compilers older than v13.1
- Remove IB XRC support from the OpenIB BTL due to loss of maintainer.

2.1.1 -- April, 2017
--------------------
Expand Down