send reply before posting the receive request again to limit the recursion size to
number of receive requests.
send can call opal_progress which calls this function again. If recv req is started
stack size will be proportional to number of job ranks.
Lock server pe computation was incorrect in cases when:
lock virtual address is signed long. In this case negative pe
value was returned.
In case when lock has different virtual adresses on different pes.
It can happen when memheap or static segment have different base
addresses. Use offset instead of absolute virtual address to
compute server pe
Fixed by @alex-mikheev, reviewed by @miked-mellanox
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.
Use exising fields of mkey struct to identify 'shared memory'
segments.
mkey.u.key is now always initialized to MAP_SEGMENT_SHM_INVALID instead
of 0
reviewed by Mike and Igor
cmr=v1.8.2:reviewer=ompi-rm1.8
This commit was SVN r32174.
fix situations where cluster nodes can have different btls
Fixed by Roman, reviewed by Igor, Mike
cmr=v1.7.5:reviewer=ompi-rm1.7
This commit was SVN r30877.
- similar to opal/shmem
- next step is some refactoring and merge into opal/shmem
Developed by Igor, reviewed by AlexM, MikeD
This commit fixes trac:4261.
This commit was SVN r30855.
The following Trac tickets were found above:
Ticket 4261 --> https://svn.open-mpi.org/trac/ompi/ticket/4261
Subject: [PATCH 1/6] OSHMEM: mkey refactoring
mkey can be either shared memory style id or it can be
arbitrary byte string
removed hack that used spml_context to store generic keys
coding style fixes
Subject: [PATCH 2/6] OSHMEM: added support of MXM 2.0 rc transport
coding style fixed, typos, check error condition
Subject: [PATCH 3/6] OSHMEM: mxm2.0: remove PTL_SELF
There is no need to have special case for 'self'
connection in mxm 2.0. It also solves the problem
of passing incorrect mkey when doing put/get to
self
Subject: [PATCH 4/6] OSHMEM: fixes mxm fadd
give a dummy buffer if doing atomic add
Subject: [PATCH 5/6] OSHMEM: mxm2.0: do not use MXM_REQ_FLAG_SEND_LAZY
Subject: [PATCH 6/6] OSHMEM: remove unused include, causes compilation fail on ubuntu
Refs trac:3763
This commit was SVN r30129.
The following Trac tickets were found above:
Ticket 3763 --> https://svn.open-mpi.org/trac/ompi/ticket/3763
