call the opal_common_verbs_mca_register function to make sure that
opal_common_verbs_want_fork_support mca parameter is created and therefore
can be used to control the fork support.
In order to have an effect, ibv_fork_init should be called in the
beginning of the verbs initialization flow - before the calls to the
ibv_create_qp and ibv_create_cq verbs.
These functions are called from the oob/ud code and by the time the
other verbs components (btl openib, pml yalla, ...) call ibv_fork_init,
it's too late. This commit forces the call to ibv_fork_init (if it's
requested) right at the beginning of all the components that are using
verbs.
(ibv_fork_init() can be safely called multiple times)
This commit also removes the btl_openib_want_fork_support mca parameter
and adds a new mca parameter instead - opal_verbs_want_fork_support.
Through this new parameter, fork support may be requested for ALL
components.
The default value for this parameter is set to 1.
Before this commit the btl_openib_want_fork_support parameter didn't
provide fork support for the openib btl if its value was set to 1.
(because when openib called ibv_fork_init, it was already after the
calls to ibv_create_* in oob/ud and thereofre it failed).
Use of the old ompi_free_list_t and ompi_free_list_item_t is
deprecated. These classes will be removed in a future commit.
This commit updates the entire code base to use opal_free_list_t and
opal_free_list_item_t.
Notes:
OMPI_FREE_LIST_*_MT -> opal_free_list_* (uses opal_using_threads ())
Signed-off-by: Nathan Hjelm <hjelmn@lanl.gov>
This commit adds an owner file in each of the component directories
for each framework. This allows for a simple script to parse
the contents of the files and generate, among other things, tables
to be used on the project's wiki page. Currently there are two
"fields" in the file, an owner and a status. A tool to parse
the files and generate tables for the wiki page will be added
in a subsequent commit.
@ggouaillardet identified that HAVE_ALIAS_ATTRIBUTE was not properly
being defined in the embedded libfabric. This is because the
embedded configury missed the test for it (i.e., the real configure.ac
for libfabric always defines HAVE_ALIAS_ATTRIBUTE to 0 or 1 -- we
didn't emulate that properly here in libfabric's configure.m4).
Also, fix some grammar and properly escape another AC_MSG_CHECKING
message in libfabric's configure.m4.
When configured --with-devel-headers, there's now 2 "osd.h" header
files in libfabric (in different dirs). Automake's "install" target
didn't like this, and errored out.
Since embedding libfabric is a temporary measure, just avoid the
problem by not installing any libfabric headers.
Embedding libfabric is a temporary measure; I'm removing some warning
notifications so that the output isn't so cluttered (we're getting
the real warnings fixed upstream, but the OMPI community doesn't
really care/need to see the warnings in the meantime).
For static builds, we need to also set
<framework>_<component>_WRAPPER_EXTRA_LIBS so that the wrappers know
what other libraries to add to link executables.
Properly test for some dependent libraries; don't just assume
elsewhere in Open MPI's configury will find those libraries. Also
consolidate some CPPFLAGS and clarify some comments.
Ensure that the <provider>_happy shell variables are initialized to
0. Without this, the --without-libfabric case would leave them
initialized, resulting in "test: -eq operator expecting a value" kinds
of errors.
Thanks to Nathan for pointing out that I missed snipping one line in
2f9c69f016 (I removed the trailing
comment, but not the trailing pragma -- oops!).
