As discussed, a feature is being added to libpsm2 to correctly handle
the case where the library is opened by multiple OMPI transports in the same
process. (For example, the OFI BTL and the PSM2 MTL).
* Improved error message to indicate required libpsm2 version.
* Adds a test at autogen/configure time for the existence of
PSM2_LIB_REFCOUNT_CAP.
Signed-off-by: Jeff Squyres <jsquyres@cisco.com>
Signed-off-by: Michael Heinz <michael.william.heinz@intel.com>
(cherry picked from commit f10305a49facec8daef24ac81a52207a3f4fb73f)
The intention of lowering the priority when all processes are local
was to favor Vader BTL. However, in builds including the OFI MTL it
gets selected instead.
Reviewed-by: Spruit, Neil R <neil.r.spruit@intel.com>
Reviewed-by: Gopalakrishnan, Aravind <aravind.gopalakrishnan@intel.com>
Signed-off-by: Matias Cabral <matias.a.cabral@intel.com>
(cherry picked from commit fc8582c5606b7a3d1b711f8f7b6144808290a48f)
As agreed on #4574, where removed in past release branches
to avoid perfomance impacts in the default values for
some paramters.
Signed-off-by: Matias Cabral <matias.a.cabral@intel.com>
of "unset".
mtl/psm2: Update some shadow mca parameters to use the default "unset".
mtl/psm2: Add new shadow parameter to allow specifying the service level.
Signed-off-by: Matias A Cabral <matias.a.cabral@intel.com>
The messages should be printed only in the event of CUDA builds and in the
presence of supporting hardware and when PSM2 MTL has actually been selected
for use. To this end, move help text output to component init phase.
Also use opal_setenv/unsetenv() for safer setting, unsetting of the environment
variable and sanitize the help text message.
Signed-off-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@intel.com>
If Open MPI is configured with CUDA, then user also should be using a CUDA build of
PSM2 and therefore be setting PSM2_CUDA environment variable to 1 while using
CUDA buffers for transfers. If we detect this setting to be missing, force set
it. If user wants to use this build for regular (Host buffer) transfers, we
allow the option of setting PSM2_CUDA=0, but print a warning
message to user that it is not a recommended usage scenario.
Signed-off-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@intel.com>
Add pvars for PSM2 MQ stats to help in analyzing performance
of Omnipath.
Tested (modestly) using modified OSU pt2pt benchmarks.
Signed-off-by: Howard Pritchard <howardp@lanl.gov>
This commit enables MCA support for the following PSM2 environment
variables: PSM2_DEVICES, PSM2_MEMORY, PSM2_MQ_SENDREQS_MAX,
PSM2_MQ_RECVREQS_MAX, PSM2_MQ_RNDV_HFI_THRESH,
PSM2_MQ_RNDV_SHM_THRESH, PSM2_RCVTHREAD, PSM2_SHAREDCONTEXTS,
PSM2_SHAREDCONTEXTS_MAX, and PSM2_TRACEMASK. These variable can be set
by MCA if they are not already set in the environment.
Signed-off-by: Nathan Hjelm <hjelmn@lanl.gov>
Intel TrueScale and Intel OmniPath, and detect a link in ACTIVE state.
This fix addresses the scenario reported in the below OMPI users email,
including formerly named Qlogic IB, now Intel True scale. Given the
nature of the PSM/PSM2 mtls this fix applies to OmniPath:
https://www.open-mpi.org/community/lists/users/2016/04/29018.php
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>
This new MTL runs over PSM2 for Omni Path. PSM2 is a descendant of PSM
with changes to support more ranks and some MPI-3 features like mprobe.
PSM2 will only support Omni Path networks; PSM only supports True Scale.
Likewise, the existing PSM MTL will continue to be maintained for True
Scale, while the PSM2 MTL is developed and maintained for Omni Path.
