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.
turned out to be a nightmare, as the pointers to the classes are
located in shared libraries memory areas, and are not accesible
after the shared library is unloaded. Thus, OPAL cannot cleanup
the left-over classes from the other shared libraries.
This commit was SVN r32248.
The following SVN revision numbers were found above:
r32236 --> open-mpi/ompi@59017433e1
new automake requires subdirs-object directive, to resolve this:
09:43:37 automake: warning: possible forward-incompatibility.
09:43:37 automake: At least a source file is in a subdirectory, but the 'subdir-objects'
09:43:37 automake: automake option hasn't been enabled. For now, the corresponding output
09:43:37 automake: object file(s) will be placed in the top-level directory. However,
09:43:37 automake: this behaviour will change in future Automake versions: they will
09:43:37 automake: unconditionally cause object files to be placed in the same subdirectory
09:43:37 automake: of the corresponding sources.
09:43:37 automake: You are advised to start using 'subdir-objects' option throughout your
09:43:37 automake: project, to avoid future incompatibilities.
09:43:37 tools/otfmerge/Makefile.common:13: warning: source file '$(OTFMERGESRCDIR)/otfmerge.c' is in a subdirectory,
09:43:37 tools/otfmerge/Makefile.common:13: but option 'subdir-objects' is disabled
cmr=v1.8.2:reviewer=ompi-rm1.8
This commit was SVN r32225.
new flag to ompi_info that allows a user to print all MCA variables of a specific type.
--type version_string
This command will print all MCA variables of type version_string.
This feature was developed by Elena Shipunova and was reviewed by Josh Ladd.
This commit was SVN r32166.
mpirun ... -x env_foo1=val1 -x env_foo2 -x env_foo3=val3 should now be expressed as
mpirun ... -mca mca_base_env_list env_foo1=val1+env_foo2+env_foo3=val3.
The motivation for doing this is so that a list of environment variables may be set via standard MCA mechanisms such as mca parameter files, amca lists, etc.
This feature was developed by Elena Shipunova and was reviewed by Josh Ladd.
This commit was SVN r32163.
After discussion with Nathan, change the ERR_VALUE_OUT_OF_BOUNDS to be
ERR_NOT_FOUND, for two reasons:
1. It's consistent with other uses of ERR_NOT_FOUND in the code.
1. In this case, we could have just looked up a variable that is
basically a "hole" -- e.g., var indexes 0, 1, 2 are valid, and 4,
5, and 5 are valid, but 3 is invalid (e.g., 3 was de-registered --
remember that MPI_T explicitly does not allow re-using indexes).
So returning ERR_OUT_OF_BOUNDS seems weird -- returning
ERR_NOT_FOUND seems a bit more natural.
cmr=v1.8.2:ticket=trac:4587
This commit was SVN r32158.
The following Trac tickets were found above:
Ticket 4587 --> https://svn.open-mpi.org/trac/ompi/ticket/4587
The alps ras and plm components were broken by recent changes in ORTE. This
commit resolves those issues.
Changes:
- Define PMI2_SUCCESS if it isn't defined. This fixes a problem with Cray's
PMI implementation which does not define (for some reason) PMI2_SUCCESS. We
had previously just used PMI_SUCCESS.
- Add missing definition and a typo in pml_alps_module.
- launch_id is no longer available in the orte_node_t structure. Use the
attribute lookup to get the value.
- Do not use an O(n^2) sorting algorithm when putting alps nodes in order. Use
opal_list_sort instead (O(nlogn)).
This commit was SVN r32076.
(a) default binding policy is in effect. In this case, we will emit a
warning and default to not binding unless the user provided the
"oversubscribe" or "overload" modifier to the "bind-to" option.
(b) user-specified binding policy is in effect. In this case, we will
error out unless the user provided the "oversubscribe" or "overload"
modifier to the "bind-to" option as we cannot meet the directive.
Either "bind-to" modifier (oversubscribe or overload) will be accepted for
now - in 1.9, we will deprecate the "overload" term in favor of
"oversubscribe".
Also added the ability to accept a --bind-to modifier without specifying the binding policy itself so a user can specify overload-allowed with the default policy.
Closes trac:4345
cmr=v1.8.2:reviewer=rhc:subject=resolve handling of overload conditions
This commit was SVN r32005.
The following Trac tickets were found above:
Ticket 4345 --> https://svn.open-mpi.org/trac/ompi/ticket/4345
* allow users to specify just a modifier for map-by instead of requiring that they also specify a policy. Thus, we now accept --map-by :pe=3 as indicating that we should use the default mapping policy, but bind 3 cpus/proc.
* if users specify a pe's/proc but no policy, default to --map-by NUMA to ensure we have access to multiple cpus for the request. This won't guarantee we have access to enough to meet the request, but gives us a chance. In addition, we know that binding a proc to multiple cpus will work best if those cpus are all in the same NUMA, so this provides some degree of optimized behavior.
Per a request from Jeff, define "oversubscribe" for binding as a synonym for the "overload" modifier.
cmr=v1.8.2:reviewer=rhc
This commit was SVN r31967.
http://www.open-mpi.org/community/lists/devel/2014/05/14822.php
Revamp the ORTE global data structures to reduce memory footprint and add new features. Add ability to control/set cpu frequency, though this can only be done if the sys admin has setup the system to support it (or you run as root).
This commit was SVN r31916.
