This code is the implementation of Software-base Performance Counters as described in the paper 'Using Software-Base Performance Counters to Expose Low-Level Open MPI Performance Information' in EuroMPI/USA '17 (http://icl.cs.utk.edu/news_pub/submissions/software-performance-counters.pdf). More practical usage information can be found here: https://github.com/davideberius/ompi/wiki/How-to-Use-Software-Based-Performance-Counters-(SPCs)-in-Open-MPI.
All software events functions are put in macros that become no-ops when SOFTWARE_EVENTS_ENABLE is not defined. The internal timer units have been changed to cycles to avoid division operations which was a large source of overhead as discussed in the paper. Added a --with-spc configure option to enable SPCs in the Open MPI build. This defines SOFTWARE_EVENTS_ENABLE. Added an MCA parameter, mpi_spc_enable, for turning on specific counters. Added an MCA parameter, mpi_spc_dump_enabled, for turning on and off dumping SPC counters in MPI_Finalize. Added an SPC test and example.
Signed-off-by: David Eberius <deberius@vols.utk.edu>
This patch disables the oshmem layer if there are no SPMLs that
will build. With the limited set of SPMLs available to support
oshmem, many builds end up installing an oshmem library that we
know will not work. There has been a bit of customer confusion
over oshmem, hopefully this will lead customers in the right
direction.
Signed-off-by: Brian Barrett <bbarrett@amazon.com>
Two related changes to allow projects to not build based on
configure test results, as opposed to only reacting to
user configure options today. Use case is disabling a project
like oshmem because no communication channels can be built.
First, Move PROJECT_* AM_CONDITIONALs from the top of configure to
the bottom, so that we can change the results during configure.
Second, add a DIST_SUBDIRS to Makefile.am (and populate it in
opal_mca) so that "make dist" will work even when a project is
disabled.
Signed-off-by: Brian Barrett <bbarrett@amazon.com>
The mpool/memkind component was using a deprecated "partitions" API.
This commit refactors the memkind component to make use of the
supported public API.
The public API uses 3 parameters to specify a mpool "kind":
- a memkind type (which for now is just default or HBM)
- a memkind policy
- a memkind_bits (partly to specify pagesize)
The MCA parameters were changed to reflect these memkind
parameters.
Add a make check test for sanity checking of the memkind component.
Signed-off-by: Howard Pritchard <howardp@lanl.gov>
We thought there was a silent data corruption issue on POWER 7/BE
systems, so we blocked building on POWER 7/BE systems altogether. We
later figured out that it was just data hangs -- not silent data
corruption. So in hindsight, the configure block probably wasn't
necessary -- but we didn't know it at the time.
Regardless, the hangs have now been fixed, and we're removing the
POWER 7/BE block in configure.
For more detail on the entire saga, see
https://github.com/open-mpi/ompi/issues/4349#issuecomment-374970982.
Signed-off-by: Jeff Squyres <jsquyres@cisco.com>
This commit updates the configure code for Open MPI to check for C11
support. The features requested are: atomics and thread local
storage.
References #3879
Signed-off-by: Nathan Hjelm <hjelmn@lanl.gov>
This test has proven to produce too many false positives so far. I hope
to re-enable it in the future, but until it has a longer history of not
producing false postivies it doesn't need to produce false nuisance
failures for everybody.
Signed-off-by: Mark Allen <markalle@us.ibm.com>
* Removes support for big endian PPC
* Removes support for XL compiler older than 13.1
* Fixes Issue #4053
Signed-off-by: Joshua Hursey <jhursey@us.ibm.com>
As part of the process for addressing removal of CR/FT related
code from master (and hence from the 3.0.0 release), it was agreed
at the OMPI devel F2F on 7/13/17 that we'd break this in to two
pieces:
1) remove the configure arguments (fewer changes)
2) remove all the CR/FT code, etc. in a subsequent bigger commit
that may not make it in to 3.0.0 in time.
By doing 1), the available configure options would not change
in a subsequent 3.0.x release if we end up not being able to do 2)
before 3.0.0 is released.
Signed-off-by: Howard Pritchard <howardp@lanl.gov>
This checks the main libs that would be directly or indirectly linked
against the users executable (libmpi.so, libmpi_mpifh.so, libmpi_usempi.so,
libopen-rte, libopen-pal) using "nm" and looking for symbols without ompi_
opal_ mpi_ etc prefixes.
Signed-off-by: Mark Allen <markalle@us.ibm.com>
Add a monitoring PML, OSC and IO. They track all data exchanges between processes,
with capability to include or exclude collective traffic. The monitoring infrastructure is
driven using MPI_T, and can be tuned of and on any time o any communicators/files/windows.
Documentations and examples have been added, as well as a shared library that can be
used with LD_PRELOAD and that allows the monitoring of any application.
Signed-off-by: George Bosilca <bosilca@icl.utk.edu>
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* add ability to querry pml monitorinting results with MPI Tools interface
using performance variables "pml_monitoring_messages_count" and
"pml_monitoring_messages_size"
Signed-off-by: George Bosilca <bosilca@icl.utk.edu>
* Fix a convertion problem and add a comment about the lack of component
retain in the new component infrastructure.
Signed-off-by: George Bosilca <bosilca@icl.utk.edu>
* Allow the pvar to be written by invoking the associated callback.
Signed-off-by: George Bosilca <bosilca@icl.utk.edu>
* Various fixes for the monitoring.
Allocate all counting arrays in a single allocation
Don't delay the initialization (do it at the first add_proc as we
know the number of processes in MPI_COMM_WORLD)
Add a choice: with or without MPI_T (default).
Signed-off-by: George Bosilca <bosilca@icl.utk.edu>
* Cleanup for the monitoring module.
Fixed few bugs, and reshape the operations to prepare for
global or communicator-based monitoring. Start integrating
support for MPI_T as well as MCA monitoring.
Signed-off-by: George Bosilca <bosilca@icl.utk.edu>
* Adding documentation about how to use pml_monitoring component.
Document present the use with and without MPI_T.
May not reflect exactly how it works right now, but should reflects
how it should work in the end.
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Change rank into MPI_COMM_WORLD and size(MPI_COMM_WORLD) to global variables in pml_monitoring.c.
Change mca_pml_monitoring_flush() signature so we don't need the size and rank parameters.
Signed-off-by: George Bosilca <bosilca@icl.utk.edu>
* Improve monitoring support (including integration with MPI_T)
Use mca_pml_monitoring_enable to check status state. Set mca_pml_monitoring_current_filename iif parameter is set
Allow 3 modes for pml_monitoring_enable_output: - 1 : stdout; - 2 : stderr; - 3 : filename
Fix test : 1 for differenciated messages, >1 for not differenciated. Fix output.
Add documentation for pml_monitoring_enable_output parameter. Remove useless parameter in example
Set filename only if using mpi tools
Adding missing parameters for fprintf in monitoring_flush (for output in std's cases)
Fix expected output/results for example header
Fix exemple when using MPI_Tools : a null-pointer can't be passed directly. It needs to be a pointer to a null-pointer
Base whether to output or not on message count, in order to print something if only empty messages are exchanged
Add a new example on how to access performance variables from within the code
Allocate arrays regarding value returned by binding
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Add overhead benchmark, with script to use data and create graphs out of the results
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Fix segfault error at end when not loading pml
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Start create common monitoring module. Factorise version numbering
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Fix microbenchmarks script
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Improve readability of code
NULL can't be passed as a PVAR parameter value. It must be a pointer to NULL or an empty string.
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Add osc monitoring component
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Add error checking if running out of memory in osc_monitoring
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Resolve brutal segfault when double freeing filename
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Moving to ompi/mca/common the proper parts of the monitoring system
Using common functions instead of pml specific one. Removing pml ones.
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Add calls to record monitored data from osc. Use common function to translate ranks.
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Fix test_overhead benchmark script distribution
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Fix linking library with mca/common
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Add passive operations in monitoring_test
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Fix from rank calculation. Add more detailed error messages
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Fix alignments. Fix common_monitoring_get_world_rank function. Remove useless trailing new lines
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Fix osc_monitoring mget_message_count function call
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Change common_monitoring function names to respect the naming convention. Move to common_finalize the common parts of finalization. Add some comments.
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Add monitoring common output system
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Add error message when trying to flush to a file, and open fails. Remove erroneous info message when flushing wereas the monitoring is already disabled.
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Consistent output file name (with and without MPI_T).
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Always output to a file when flushing at pvar_stop(flush).
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Update the monitoring documentation.
Complete informations from HowTo. Fix a few mistake and typos.
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Use the world_rank for printf's.
Fix name generation for output files when using MPI_T. Minor changes in benchmarks starting script
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Clean potential previous runs, but keep the results at the end in order to potentially reprocess the data. Add comments.
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Add security check for unique initialization for osc monitoring
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Clean the amout of symbols available outside mca/common/monitoring
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Remove use of __sync_* built-ins. Use opal_atomic_* instead.
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Allocate the hashtable on common/monitoring component initialization. Define symbols to set the values for error/warning/info verbose output. Use opal_atomic instead of built-in function in osc/monitoring template initialization.
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Deleting now useless file : moved to common/monitoring
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Add histogram ditribution of message sizes
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Add histogram array of 2-based log of message sizes. Use simple call to reset/allocate arrays in common_monitoring.c
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Add informations in dumping file. Separate per category (pt2pt/osc/coll (to come)) monitored data
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Add coll component for collectives communications monitoring
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Fix warning messages : use c_name as the magic id is not always defined. Moreover, there was a % missing. Add call to release underlying modules. Add debug info messages. Add warning which may lead to further analysis.
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Fix log10_2 constant initialization. Fix index calculation for histogram array.
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Add debug info messages to follow more easily initialization steps.
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Group all the var/pvar definitions to common_monitoring. Separate initial filename from the current on, to ease its lifetime management. Add verifications to ensure common is initialized once only. Move state variable management to common_monitoring.
monitoring_filter only indicates if filtering is activated.
Fix out of range access in histogram.
List is not used with the struct mca_monitoring_coll_data_t, so heritate only from opal_object_t.
Remove useless dead code.
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Fix invalid memory allocation. Initialize initial_filename to empty string to avoid invalid read in mca_base_var_register.
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Don't install the test scripts.
Signed-off-by: George Bosilca <bosilca@icl.utk.edu>
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Fix missing procs in hashtable. Cache coll monitoring data.
* Add MCA_PML_BASE_FLAG_REQUIRE_WORLD flag to the PML layer.
* Cache monitoring data relative to collectives operations on creation.
* Remove double caching.
* Use same proc name definition for hash table when inserting and
when retrieving.
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Use intermediate variable to avoid invalid write while retrieving ranks in hashtable.
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Add missing release of the last element in flush_all. Add release of the hashtable in finalize.
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Use a linked list instead of a hashtable to keep tracks of communicator data. Add release of the structure at finalize time.
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Set world_rank from hashtable only if found
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Use predefined symbol from opal system to print int
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Move collective monitoring data to a hashtable. Add pvar to access the monitoring_coll_data. Move functions header to a private file only to be used in ompi/mca/common/monitoring
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Fix pvar registration. Use OMPI_ERROR isntead of -1 as returned error value. Fix releasing of coll_data_t objects. Affect value only if data is found in the hashtable.
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Add automated check (with MPI_Tools) of monitoring.
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Fix procs list caching in common_monitoring_coll_data_t
* Fix monitoring_coll_data type definition.
* Use size(COMM_WORLD)-1 to determine max number of digits.
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Add linking to Fortran applications for LD_PRELOAD usage of monitoring_prof
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Add PVAR's handles. Clean up code (visibility, add comments...). Start updating the documentation
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Fix coll operations monitoring. Update check_monitoring accordingly to the added pvar. Fix monitoring array allocation.
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Documentation update.
Update and then move the latex and README documentation to a more logical place
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Aggregate monitoring COLL data to the generated matrix. Update documentation accordingly.
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Fix monitoring_prof (bad variable.vector used, and wrong array in PMPI_Gather).
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Add reduce_scatter and reduce_scatter_block monitoring. Reduce memory footprint of monitoring_prof. Unify OSC related outputs.
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Add the use of a machine file for overhead benchmark
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Check for out-of-bound write in histogram
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Fix common_monitoring_cache object init for MPI_COMM_WORLD
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Add RDMA benchmarks to test_overhead
Add error file output. Add MPI_Put and MPI_Get results analysis. Add overhead computation for complete sending (pingpong / 2).
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Add computation of average and median of overheads. Add comments and copyrigths to the test_overhead script
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Add technical documentation
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Adapt to the new definition of communicators
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Update expected output in test/monitoring/monitoring_test.c
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Add dumping histogram in edge case
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Adding a reduce(pml_monitoring_messages_count, MPI_MAX) example
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Add consistency in header inclusion.
Include ompi/mpi/fortran/mpif-h/bindings.h only if needed.
Add sanity check before emptying hashtable.
Fix typos in documentation.
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* misc monitoring fixes
* test/monitoring: fix test when weak symbols are not available
* monitoring: fix a typo and add a missing file in Makefile.am
and have monitoring_common.h and monitoring_common_coll.h included in the distro
* test/monitoring: cleanup all tests and make distclean a happy panda
* test/monitoring: use gettimeofday() if clock_gettime() is unavailable
* monitoring: silence misc warnings (#3)
Signed-off-by: Gilles Gouaillardet <gilles@rist.or.jp>
* Cleanups.
Signed-off-by: George Bosilca <bosilca@icl.utk.edu>
* Changing int64_t to size_t.
Keep the size_t used accross all monitoring components.
Adapt the documentation.
Remove useless MPI_Request and MPI_Status from monitoring_test.c.
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Add parameter for RMA test case
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Clean the maximum bound computation for proc list dump.
Use ptrdiff_t instead of OPAL_PTRDIFF_TYPE to reflect the changes from commit fa5cd0dbe5.
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Add communicator-specific monitored collective data reset
Signed-off-by: Clement Foyer <clement.foyer@inria.fr>
* Add monitoring scripts to the 'make dist'
Also install them in the build and the install directories.
Signed-off-by: George Bosilca <bosilca@icl.utk.edu>
This PR renames the common library for OFI libfabric from
libfabric to ofi. There are a number of reasons this
is good to do:
1) its shorter and replaces 9 characters with three for
function names for what may eventually be a fairly extensive interface
2) OFI is the term used for MTL and RML components that use
the OFI libfabric interface
3) A planned OSC component will also use the OFI term.
4) Other HPC libraries that can use OFI libfabric tend to use
the term "ofi" internally and also in their configure options
relevant to OFI libfabric (i.e. MPICH/CH4, Intel MPI, Sandia SHMEM)
There seem to be comments in places in the Open MPI source
code that indicate that this common library will be going away.
Far from it as we will want to be able to share things like
AV objects between OMPI and possibly OSHMEM components that
use the OFI libfabric interface.
This PR also adds a synonym to the --with-libfabric(-libdir)
configury options: --with-ofi and with-ofi-libdir.
Signed-off-by: Howard Pritchard <howardp@lanl.gov>
since Open MPI now requires a C99, and ptrdiff_t type is part of C99,
there is no more need for the abstract OPAL_PTRDIFF_TYPE type.
Thanks George, Nathan and Paul for the help.
Signed-off-by: Gilles Gouaillardet <gilles@rist.or.jp>
perl is required by ompi/mpi/man/make_manpage.pl, that is even used in opal.
so simply aborts at configure time if perl is not available
Signed-off-by: Gilles Gouaillardet <gilles@rist.or.jp>
the class system can be initialized/finalized as many times as we like,
so there is no more need to have opal_class_finalize() invoked in a destructor
Signed-off-by: Gilles Gouaillardet <gilles@rist.or.jp>
libnl and libnl-3 are known to conflict with each other, so detect
and abort if these two libs are both used directly (e.g. Open MPI
uses libnl-3) or indirectly (e.g. libibverbs.so might depend on libnl)
* Add a configure time option to rename libmpi(_FOO).*
- `--with-libmpi-name=STRING`
* This commit only impacts the installed libraries.
Internal, temporary libraries have not been renamed to limit the
scope of the patch to only what is needed.
For example:
```shell
shell$ ./configure --with-libmpi-name=wookie
...
shell$ find . -name "libmpi*"
shell$ find . -name "libwookie*"
./lib/libwookie.so.0.0.0
./lib/libwookie.so.0
./lib/libwookie.so
./lib/libwookie.la
./lib/libwookie_mpifh.so.0.0.0
./lib/libwookie_mpifh.so.0
./lib/libwookie_mpifh.so
./lib/libwookie_mpifh.la
./lib/libwookie_usempi.so.0.0.0
./lib/libwookie_usempi.so.0
./lib/libwookie_usempi.so
./lib/libwookie_usempi.la
shell$
```
configury command line is quoted and made available via the OPAL_CONFIGURE_CLI macro.
it can be retrieved via {orte-info,ompi_info,oshmem_info} -c, or
{orte-info,ompi_info,oshmem_info} --all --parseable | grep ^config:cli:
Newer versions of gcc have "poisoned" the __malloc_initialize_hook
name and it can no longer be used. Added a configure check and
protection around its usage.
Signed-off-by: Nathan Hjelm <hjelmn@lanl.gov>
These macros should really be named OPAL_SUMMARY_*; they're used in
all projects, and therefore should be in the lowest later project (OPAL).
Signed-off-by: Jeff Squyres <jsquyres@cisco.com>
This commit adds two m4 macros: OPAL_SUMMARY_ADD, OPAL_SUMMARY_PRINT.
OPAL_SUMMARY_ADD adds an item to a section in the summary. For example
OPAL_SUMMARY_ADD([[Transports]],[[Foo]],...,[yes]) will add the
following to the summary:
Transports
-----------------------
Foo: yes
With this commit two sections are added: Transports, Resource Managers.
The OPAL_SUMMARY_PRINT macro is called after AC_OUTPUT and prints out
some information about the build (version, projects, etc) and then
the summarys sections. It will additionally print a warning if
internal debugging is enabled.
Example output:
Open MPI configuration:
-----------------------
Version: 3.0.0 a1
Build Open Platform Abstration project: yes
Build Open Runtime project: yes
Build Open MPI project: yes
Build Open SHMEM project: no
MPI C++ bindings (deprecated): no
MPI Fortran bindings: mpif.h, use mpi, use mpi_f08
Debug build: yes
Transports
-----------------------
Cray uGNI (Gemini/Aries): no
Intel Omnipath (PSM2): no
KNEM Shared Memory: no
Linux CMA IPC: no
Mellanox MXM: no
Open UCX: no
OpenFabrics libfabric: no
OpenFabrics Verbs: no
portals4: no
QLogic Infinipath (PSM): no
tcp: yes
XPMEM Shared Memory: no
Resource Managers
-----------------------
Cray Alps: no
Grid Engine: no
LSF: no
Slurm: yes
Torque: yes
INTERNAL DEBUGGING IS ENABLED. DO NOT USE THIS BUILD FOR PERFORMANCE MEASUREMENTS!
Signed-off-by: Nathan Hjelm <hjelmn@me.com>
This commit removes the --with-mpi-thread-multiple option and forces
MPI_THREAD_MULTIPLE support. This cleans up an abstration violation
in opal where OMPI_ENABLE_THREAD_MULTIPLE determines whether the
opal_using_threads is meaningful. To reduce the performance hit on
MPI_THREAD_SINGLE programs an OPAL_UNLIKELY is used for the
check on opal_using_threads in OPAL_THREAD_* macros.
This commit does not clean up the arguments to the various functions
that take whether muti-threading support is enabled. That should be
done at a later time.
Signed-off-by: Nathan Hjelm <hjelmn@lanl.gov>
Move .so version numbers to their appropriate project in the top-level
VERSION file. Also add the project name to all .so version number
names. Remove no-longer-used .so names.
counting or not the collective traffic as a separate entity. The need
for such a PML is simply because the PMPI interface doesn't allow us to
identify the collective generated traffic.
