The new routine transfers the data asynchronously from the source PE to all
PEs in the OpenSHMEM job. The routine returns immediately. The source and
target buffers are reusable only after the completion of the routine.
After the data is transferred to the target buffers, the counter object
is updated atomically. The counter object can be read either using atomic
operations such as shmem_atomic_fetch or can use point-to-point synchronization
routines such as shmem_wait_until and shmem_test.
Signed-off-by: Mikhail Brinskii <mikhailb@mellanox.com>
(cherry picked from commit 2ef5bd8b3671f1e10caf00d06d66d120eac9c5be)
+ Add quiet method to SPML, so it can have different implementation with
fence.
+ Use ucp_worker_fence for spml_fence method of UCX SPML
Signed-off-by: Mikhail Brinskii <mikhailb@mellanox.com>
* updating naming convention for the arguments in order to ensure
that the name aligns with an actual meaning of the argument
* remove local variable references in the macro
* adding volatile for the poll variables
Signed-off-by: Pavel Shamis (Pasha) <pasharesearch@gmail.com>
The hook is called from memheap when memory range
is going to be allocated by smalloc(), realloc() and others.
ucx spml uses this hook to call ucp_mem_advise in order to speedup
non blocking memory mapping.
Signed-off-by: Alex Mikheev <alexm@mellanox.com>
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.
- 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
