This merge adds Checkpoint/Restart support to Open MPI. The initial
frameworks and components support a LAM/MPI-like implementation.
This commit follows the risk assessment presented to the Open MPI core
development group on Feb. 22, 2007.
This commit closes trac:158
More details to follow.
This commit was SVN r14051.
The following SVN revisions from the original message are invalid or
inconsistent and therefore were not cross-referenced:
r13912
The following Trac tickets were found above:
Ticket 158 --> https://svn.open-mpi.org/trac/ompi/ticket/158
In that case, sendcount and sendtype are not valid and we need to use
recvcount and recvtype.
This commit fixes trac:943. Reviewed by Jelena Pjesivac-Grbovic.
This commit was SVN r14022.
The following Trac tickets were found above:
Ticket 943 --> https://svn.open-mpi.org/trac/ompi/ticket/943
- fixing line lengths and some of the comments
- possible bug fix (but I do not think we exposed it in any tests so far)
temporary buffers were allocated as multiples of extent instead of
true_extent + (count -1) * extent.
Everything is still passing Intel tests over tcp and btl mx up to 64 nodes.
This commit was SVN r13956.
The original code was not compensating for the space used by the header.
When memory got tight, the allocator would return a pointer to memory that
did not exist resulting in a SEGV for the application. This is a partial
fix for ticket #929.
Reviewed by Rich Graham.
This commit was SVN r13950.
Currently 3 algorithms are available:
- non-overlapping, reduce + scatterv, (works for non-commutative operations)
- recursive halving algorithm (copied from basic module)
- ring algorithm (similar to allreduce ring, for large messages)
This commit was SVN r13929.
MCA_BTL_SM_FRAG_SEND) and status success/fail in low bits of pointers we
are passing through circular buffer. The rank that receives ACK doesn't need
to look into data it received and this is a big win since this data is not in
the cache of the rank's CPU. (Note that we can use low bits of pointers because
free_list always return pointers aligned at least to cache line size).
This commit was SVN r13922.
allocated from mpool memory (which is registered memory for RDMA transports)
This is not a problem for a small jobs, but for a big number of ranks an
amount of waisted memory is big.
This commit was SVN r13921.
- mca_base_param_file_prefix
(Default: NULL)
This is the fullname of the "-am" mpirun option. Used to specify a ':'
separated list of AMCA parameter set files.
- mca_base_param_file_path
(Default: $SYSCONFDIR/amca-param-sets/:$CWD)
The path to search for AMCA files with relative paths. A warning will be
printed if the AMCA file cannot be found.
* Added a new function "mca_base_param_recache_files" the re-reads the file
configurations. This is used internally to help bootstrap the MCA system.
* Added a new orterun/mpirun command line option '-am' that aliases for the
mca_base_param_file_prefix MCA parameter
* Exposed the opal_path_access function as it is generally useful in other
places in the code.
* New function "opal_cmd_line_make_opt_mca" which will allow you to append a
new command line option with MCA parameter identifiers to set at the same
time. Previously this could only be done at command line declaration time.
* Added a new directory under the $pkgdatadir named "amca-param-sets" where all
the 'shipped with' Open MPI AMCA parameter sets are placed. This is the first
place to search for AMCA sets with relative paths.
* An example.conf AMCA parameter set file is located in
contrib/amca-param-sets/.
* Jeff Squyres contributed an OpenIB AMCA set for benchmarking.
Note: You will need to autogen with this commit as it adds a configure param.
Sorry :(
This commit was SVN r13867.
and another for dst descriptors. This provide partial solution to OB1 protocol
deadlock problem. We can limit number of RDMA descriptors (by setting
btl_openib_free_list_max to something different from -1) and if we will be
lucky to hit this limit before we fail to register more memory the protocol
will not deadlock. When we had only one list for src/dst descriptors we
deadlocked when we reached max limit for the list.
This commit was SVN r13844.
Algorithm allows user to specify the segment size to be used for computation/communication overlap.
The additional memory requirement for the algorithm is 2 x segment size.
It performed well for (really) large message sizes over MX and it passed intel Allreduce_c and Allreduce_loc_c tests.
This commit was SVN r13832.
Long unexpected messages were not generating PUT_START events
because the MD for long unexpected messages was configured to
ignore start events. When a long unexpected message arrived, it
traversed the match list, and ended up in the long unexpected MD.
As the long message is being consumed, the code called PtlMDUpdate()
to look for the message, but there was no event that indicated
that it had arrived. So, the update succeeded. Once the long
unexpected message was consumed, the PUT_END event showed up in the
event queue -- except the code wasn't looking for it anymore.
The PUT_START events exist specifically to handle ordering between
short and long unexpected messages, so PUT_START events can't be
ignored on long unexpected messages.
Modified the code to generate PUT_START events for both long and
short unexpected messages and handle matching up START and END
events appropriately.
This commit was SVN r13746.
- the block sizes are computed in more uniformn way.
The first k blocks may be 1 element larger than the remaining blocks.
The algorithm passed Intel Allreduce_c and Allreduce_loc_c tests, and
IMB-3.2 Allreduce, over TCP and both btl and mtl MX (up to 128 processes).
The algorithm still only supports commutative operations.
This commit was SVN r13738.
- Implement the BML/r2 finialize funciton
- Cleanup the btl close routine
- Wire up a pml_base_verbose MCA parameter so you can actually watch the PML selection logic if you really want to.
- Fix a potental segfault in the selection logic.
ompi_pointer_array_get_item() may return NULL, so we have to check for it
This commit was SVN r13734.
The following SVN revision numbers were found above:
r2 --> open-mpi/ompi@58fdc18855
outstanding requests can be limited using mca parameters.
The implementation passed Intel, IMB-3.2, and mpi_test_suite tests over
TCP and MX up to 128 processes (64 nodes), on both 32-bit and 64-bit machines.
It is not activated by default, but it should be useful for really large
communicator sizes.
This commit was SVN r13720.
middle of a struct). Now we properly define and name the union
outside the struct and simply create an instance of it inside the
struct.
This commit was SVN r13709.
