WHAT: Open our low-level communication infrastructure by moving all necessary components (btl/rcache/allocator/mpool) down in OPAL
All the components required for inter-process communications are currently deeply integrated in the OMPI layer. Several groups/institutions have express interest in having a more generic communication infrastructure, without all the OMPI layer dependencies. This communication layer should be made available at a different software level, available to all layers in the Open MPI software stack. As an example, our ORTE layer could replace the current OOB and instead use the BTL directly, gaining access to more reactive network interfaces than TCP. Similarly, external software libraries could take advantage of our highly optimized AM (active message) communication layer for their own purpose. UTK with support from Sandia, developped a version of Open MPI where the entire communication infrastucture has been moved down to OPAL (btl/rcache/allocator/mpool). Most of the moved components have been updated to match the new schema, with few exceptions (mainly BTLs where I have no way of compiling/testing them). Thus, the completion of this RFC is tied to being able to completing this move for all BTLs. For this we need help from the rest of the Open MPI community, especially those supporting some of the BTLs. A non-exhaustive list of BTLs that qualify here is: mx, portals4, scif, udapl, ugni, usnic.
This commit was SVN r32317.
OpenSHMEMspec 1.1 introduces a set of environment variables that allows users to configure the Open-SHMEM implementation, and receive information about the implementation.
- Add SMA_SYMMETRIC_SIZE - number of bytes to allocate for symmetric heap
- SHMEM_SYMMETRIC_HEAP_SIZE (Mellanox extension) is used by a user to provide a size of symmetric area. This change sets this env variable in case a user does not set this variable
directly.
fixed by Igor, reviewed by Miked
cmr=v1.8.2:reviwer=ompi-rm1.8
This commit was SVN r32257.
- add some missing APIs
- change signature od shmem_finalize to comply with SGI spec
fixed by Roman, reviewed by Igor/Miked
Refs trac:4520
This commit was SVN r31413.
The following Trac tickets were found above:
Ticket 4520 --> https://svn.open-mpi.org/trac/ompi/ticket/4520
- similar to opal/shmem
- next step is some refactoring and merge into opal/shmem
Developed by Igor, reviewed by AlexM, MikeD
This commit fixes trac:4261.
This commit was SVN r30855.
The following Trac tickets were found above:
Ticket 4261 --> https://svn.open-mpi.org/trac/ompi/ticket/4261
pkg{data,lib,includedir}, use our own ompi{data,lib,includedir}, which is
always set to {datadir,libdir,includedir}/openmpi. This will keep us from
having help files in prefix/share/open-rte when building without Open MPI,
but in prefix/share/openmpi when building with Open MPI.
This commit was SVN r30140.
2. Oshmem examples moved to 'mpi' build target.
3. Oshmem examples renamed as 'shmem' => 'oshmem'.
4. Fixed warnings in oshmem_info.
Refs: 3763
This commit was SVN r29663.
1. The OpenSHMEM specification is silent regarding how OpenSHMEM programs are compiled,
linked and run. These wrappers are added to meet an example in the specification.
2. remove unused/obsolete files
Implemented by Igor, reviewed by miked
cmr=v1.7.4:reviewer=ompi-rm1.7
This commit was SVN r29332.
(http://www.open-mpi.org/community/lists/devel/2013/09/12889.php), I
renamed all "f77" and "f90" directory/file names to "fortran"
(including removing shmemf77 / shmemf90 wrapper compilers and
replacing them with "shmemfort").
2. Fixed several Fortran coding errors.
3. Removed lots of old/stale comments that were clearly the result of
copying from the OMPI layer and then not cleaning up afterwards (i.e.,
the comments were wholly inaccurate in the oshmem layer).
4. Removed both redundant and harmful code from oshmem_config.h.in.
5. Temporarily slave building the oshmem Fortran bindings to
--enable-mpi-fortran. This doesn't seem like a good long-term
solution, but at least you can now build all Fortran bindings (MPI +
oshmem) or not. *** SEE MY NOTE IN config/oshmem_configure_options.m4
FOR WORK THAT STILL NEEDS TO BE DONE!
This commit was SVN r29165.
