This commit changes the priority of mtl components to be relative to
pml/ob1 and updates the mtl interface to expose this priority. cm now
sets its own priority based on the priority of the selected mtl
component.
Signed-off-by: Nathan Hjelm <hjelmn@lanl.gov>
mtl_ofi_provider_include (resp. mtl_ofi_provider_exclude) can be used
to specify which provider(s) the OFI MTL can select (resp. ignore).
e.g. --mca mtl_ofi_provider_include "psm,sockets"
By default, mtl_ofi_provider_exclude is set to "sockets,mxm".
This deprecates the old MCA var named "mtl_ofi_provider".
Some OFI providers such as "sockets" are used for debugging
purposes mostly. For these providers, other components usually
offer better performance -- e.g. for sockets, the BTL/TCP would
be a better choice.
Thus, we chose to ignore some providers unless explicitly asked
by the user on the command line:
e.g. --mca mtl_ofi_provider sockets
Retain inline progress function for ofi
mtl, but have a non-inlined progress function
which is registered with the opal progress
mechanism.
@jithinjosepkl
I've bad news about the psm provider. I still notice
segfaults - not always - but frequently at finalize
when using the psm provider. I don't notice this
when using the sockets provider.
Signed-off-by: Howard Pritchard <howardp@lanl.gov>
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>
Please verify your components have been updated correctly. Keep in
mind that in terms of threading:
OPAL_FREE_LIST_GET -> opal_free_list_get_st
OPAL_FREE_LIST_RETURN -> opal_free_list_return_st
I used the opal_using_threads() variant anytime it appeared multiple
threads could be operating on the free list. If this is not the case
update to _st. If multiple threads are always in use change to _mt.
The fi_fabric function appears to free the provider string passed in
in the fabric_attr. This causes MCA to free an invalid pointer when
the parameter is freed.
References #374
Squash compiler warnings now showing up in the
query methods for the mtls. Cast pointers to the different
mtl module specific types to the mca_base_module_t.
Also, fix up a missing extern in mtl_psm_types.h.
This was causing "multiple definition" errors when building
the mca_mtl_psm.so shared library.
Switch to using the query/priority method for selecting
MTLs. This switch was motivated by the fact that now
on some platforms, its possible for multiple MTLs to
be initializable, but only one MTL should be selected.
In addition, there is a complication with the PSM and
IFO (with PSM provider) MTLs owing to the fact that
they cannot both intialize the underlying PSM context,
i.e. only one call to psm_init is allowed per process.
The mxm component has not been compiled as the author
doesn't currently have access to a system with a recent
enough mxm installed to allow for a compile.
The portals4, ofi, and psm components have been checked
for compilation. The ofi and psm components have been
checked for runtime correctness on a intel/qlogic system
with up to date PSM installed.
