* relax MPI dependency from code
This commit (series) removes the strict dependency on MPI in code base.
rocSHMEM will still be compiled with MPI, but the goal is to make the
code work even if MPI_Init_thread has not been invoked, at least for
certain, well-defined scenarios. Hence, the goal is not remove any
mentioning of MPI from rocSHMEM, but to ensure correct execution of the
ipc conduit even if the library has been initialized using other means.
Details:
- add non-MPI version of remote_heap and WindowInfo classes
- host interfaces work on WindowInfoMPI, they will not work with the
non-MPI code path. Since it is unclear whether we plan to support the
host interfaces at all, this is probably not a major limitation.
* update symmetric_heap structures and backend
* first cut on initialization
and enabling non-MPI initialization of the IPCBackend
* add non-MPI hostInterface methods
at the moment, only barrier_all and sync_all are explicitely supported.
* add non-mpi version of ipc_policy
and a number of smaller fixes required in other files.
A small init/finalize test already passes now with the branch.
* add non-mpi team_split_strided code
* minor fixes for non-MPI use-case
* disable symmetric-heap-window-ionfo test
disable this test for now just to make the compilation pass. Will have
to rework it.
* make no-mpi great again
after rebasing on top of the MPI singleton changes.
* enable running functional tests with uuid init
to run the functional tests using rocshmem_init_attr and the uuid
mechanism requires
a) a PMIx installation on the system
b) setting the environment variable ROCSHMEM_TEST_UUID=1
* fix multi-team creation bug
fix a bug occuring when creating many teams, which was the result of
incorrectly applying two indices in our own implementation of Allreduce.
* make unit tests pass again
* reverse offload was impacted by code change
fix the RO conduit to cope wioth the non-MPI path introduced for the IPC
conduit.
* update to cmake logic to find pmix
* Update src/memory/window_info.hpp
Co-authored-by: Yiltan <ytemucin@amd.com>
* Update CMakeLists.txt
Co-authored-by: Yiltan <ytemucin@amd.com>
* document ROCSHMEM_UNIQUEID_NO_MPI
* rename env. variable to UNIQUEID_WITH_MPI
* update host.cpp to use USE_HDP_FLUSH macro
instead of the deprecated USE_COHERENT_HEAP.
* add note for running example with RO conduit
add a note clarifying that running init_attr_test from the example
directory requires setting an additional environment variable with the
RO conduit.
* Find PMIx in more cases, only apply pmix build options to the test that
needs it, if OMPI_COMM_WORLD_LOCA_RANK is not setenv, abort
---------
Co-authored-by: Yiltan <ytemucin@amd.com>
Co-authored-by: Aurelien Bouteiller <abouteil@amd.com>
* Revert "SWDEV-536571 - Include assert header. (#157)"
This reverts commit bcc14b1a34.
* Fix use of assert/abort and required includes
* Disable IPC AMO testers for non-implemented functions
* unify handling of env variables
create a class containing all (most?) environment variables used by rocshmem and an object that is instatiated
before library_init, since some of the environment variables need to be
set before we start the bootstraping process.
This allows us to remove two files from the bootstrap directory.
* replace INFO and TRACE macros with DPRINTF
to be more consistent with the rest of the rocSHMEM code
* Remove dev_mono_linear (followup to removal of slab_heap)
* cleanup: use CHECK_HIP rather than ad-hoc error checking
---------
Signed-off-by: Aurelien Bouteiller <aurelien.bouteiller@amd.com>
* add code for bootstrapping
the bootstrapping code has been extracted from the MSCCLPP library,
which in parts is based on the code from NVIDIA. The code has been
modified to match the specific requirements of the rocSHMEM library.
* add code to use the new uniqueId bootstrapping
* adjust init_attr example
extend the rocshmem_init_attr example to use two disjoint groups
of processe, in order to trigger the new code path.
* add env variable for bootstrap timeout
* Update examples/rocshmem_init_attr_test.cc
Co-authored-by: Aurelien Bouteiller <Aurelien.bouteiller@gmail.com>
* Update src/rocshmem.cpp
Co-authored-by: Aurelien Bouteiller <Aurelien.bouteiller@gmail.com>
---------
Co-authored-by: Aurelien Bouteiller <Aurelien.bouteiller@gmail.com>
* Update backend to use provided MPI communicator during library initialization, default to `MPI_COMM_WORLD`
* Update `rocshmem_my_pe` and `rocshmem_n_pes` host APIs
- Return values from backend if initialized; otherwise, fallback to MPI_Singleton.
add the interfaces required to support rocshmem initialization
through the uniqueID mechanism. At the moment this still maps to
MPI initialization underneath the hood, but adding the functions might
simplify the porting of some applications to rocshmem. In addition, if
we need to transition away from MPI one day, this is also one step into
this direction.
Edgar Gabriel
Dimple Prajapati
Aurelien Bouteiller
Yiltan
Avinash Kethineedi
Brandon Potter