the command line, hwloc is just like any other external dependency
in OMPI: if we find it, we'll use it. If we don't find it, we'll
ignore it. See comments in opal/mca/hwloc/configure.m4 for an
explanation.
* Fix some copy-n-paste errors in opal/mca/hwloc/configure.m4
w.r.t. flags coming in from the winning component.
* Add another line in ompi_info's output about whether hwloc support
is included or not.
This commit was SVN r25134.
specify btl_tcp_if_include because btl_tcp_if_exclude is defaulted to
the loopback devices.
This commit does a few things:
* Introduce a new OPAL MCA base function:
mca_base_param_check_exclusive_string(). It checks to see that the
''user'' does not set two MCA parameters that are mutually
exclusive by checking the source of those MCS param values.
* Use the above function in many BTLs (and the OOB TCP) to ensure
that <foo>_if_include and <foo>_if_exclude are not both specified
''by the user''.
* Re-arrange many of these BTLs to move their MCA registration code
into a separate component_register() function (vs. the
component_open() function).
This code has been nominally reviewed and checked by Ralph, George,
Terry, and Shiqing.
This commit was SVN r25043.
The following SVN revision numbers were found above:
r24976 --> open-mpi/ompi@8f4ac54336
that enabling "local_only" by default could cause excessive
by-NUMA-node paging and/or OOMs (rather than allowing memory
allocations to spill over to other NUMA nodes).
This brought home the very real-world example of people buying servers
with more processors/cores than they need, just to get more memory.
We wouldn't want Badness to occur in such scenarios by default.
Instead, let people turn on "only allow memory allocations on my local
NUMA node" if their application would benefit from it.
This commit was SVN r24648.
After a long period of development with many starts and stops, we
finally got this where we wanted it.
This commit introduces 2 new MCA params (note that the
"maffinity_libnuma_policy" MCA param introduced by r24290 was removed
when libnuma support was removed). Remember that maffinity policies
are only in effect when paffinity is enaabled -- i.e., when processes
are bound to processors!
* '''maffinity_base_alloc_policy:''' Policy that determines how
general memory allocations are bound after MPI_INIT. A value of
"none" means that no memory policy is applied. A value of
"local_only" means that all memory allocations will be restricted
to the local NUMA node where each process is placed. Note that
operating system paging policies are unaffected by this setting.
For example, if "local_only" is used and local NUMA node memory is
exhausted, a new memory allocation may cause paging.
* '''maffinity_base_bind_failure_action:''' What Open MPI will do if
it explicitly tries to bind memory to a specific NUMA location, and
fails. Note that this is a different case than the general
allocation policy described by maffinity_base_alloc_policy. A
value of "warn" means that Open MPI will warn the first time this
happens, but allow the job to continue (possibly with degraded
performance). A value of "error" means that Open MPI will abort
the job if this happens.
This needs at least a little soak time on the trunk before going to
v1.5.
This commit was SVN r24639.
The following SVN revision numbers were found above:
r24290 --> open-mpi/ompi@afa654746c
The following Trac tickets were found above:
Ticket 2698 --> https://svn.open-mpi.org/trac/ompi/ticket/2698
Upgrade to hwloc 1.2 (from hwloc 1.1.2). This should fix the problems
Nathan's seeing in #2778.
Let's let this soak on the trunk for a little while and see how LANL's
MTT's work out. If that works, then we can CMR this to v1.5.
This commit was SVN r24635.
The following Trac tickets were found above:
Ticket 2778 --> https://svn.open-mpi.org/trac/ompi/ticket/2778
