for very large offsets, ome ariables used in the fcoll/dynamic_gen2
code base were under certain circumstances not large enough to hold
intermediate values. This issue was more detected in the vulcan component
but could happen in the dynamic_gen2 component as well.
Signed-off-by: Edgar Gabriel <egabriel@central.uh.edu>
This commit adds a new MCA variable to set the location of the backing
store: osc_sm_backing_directory. The default on Linux has been
changed to use /dev/shm to improve performance in cases where /tmp is
not a tmpfs.
Signed-off-by: Nathan Hjelm <hjelmn@lanl.gov>
This commit adds a new MCA variable to set the location of the backing
store: osc_rdma_backing_directory. The default on Linux has been
changed to use /dev/shm to improve performance in cases where /tmp is
not a tmpfs.
Signed-off-by: Nathan Hjelm <hjelmn@lanl.gov>
Per discussion at
https://github.com/open-mpi/ompi/issues/2614#issuecomment-392815654,
do not allow for selection of the OSC PT2PT when creating an MPI RMA
window when THREAD_MULTIPLE is active. Print a helpful message and
return a not-supported error.
Signed-off-by: Howard Pritchard <howardp@lanl.gov>
Signed-off-by: Jeff Squyres <jsquyres@cisco.com>
(cherry picked from commit d0ffd660841623c02d1dfa3151e7f7afd3327698)
Signed-off-by: Jeff Squyres <jsquyres@cisco.com>
Implements butterfly algorithm for MPI_Reduce_scatter_block.
The algorithm can be used both by commutative and non-commutative
operations, for power-of-two and non-power-of-two number of processes.
Signed-off-by: Mikhail Kurnosov <mkurnosov@gmail.com>
Remove the MXM MTL, which has been deprecated in preference for
the Yalla PML. This was discussed at the last developers meeting
and somehow I ended up with the action item to do the removal.
Signed-off-by: Brian Barrett <bbarrett@amazon.com>
- rename ompi_coll_base_reduce_scatter_block_basic to
more self descriptive ompi_coll_base_reduce_scatter_block_basic_linear
- fix the description of the coll_tuned_reduce_scatter_block_algorithm
MCA param
this fixes and documents previous open-mpi/ompi@0e8b35b615
MPI_Reduce_scatter_block used to be implemented by the coll/basic module only.
A new algo (recursive doubling) was recently introduced and can be used via the coll/tuned module,
but we never intended to make it the default algo.
In order to "restore" the previous default, the initial algo was moved from coll/basic to coll/base,
and is now used by default by coll/tuned.
Signed-off-by: Gilles Gouaillardet <gilles@rist.or.jp>
The files array was also storing $phase.prof. This was leading to
$phase.prof's output getting dumped into itself again and again. Updated
code to initialise files array with files other than $phase.prof.
Signed-off-by: Ninad Prabhukhanolkar <ninadchess96@gmail.com>
keep track of the sizeof the blocklen_per_process and displs_per_process
on the aggregator datastructure to minimze the number of realloc function
calls required in the shuffle_init operation.
Signed-off-by: raafatfeki <fekiraafat@gmail.com>
This commit attempts to update the romio io component to not use
functions removed in MPI-3.0 (2012). This is a first cut and will
probably need to be reviewed for correctness.
Signed-off-by: Nathan Hjelm <hjelmn@lanl.gov>
romio assumes that all predefined datatypes are contiguous. Because of
the (terribly named) composed datatypes MPI_SHORT_INT, MPI_DOUBLE_INT,
MPI_LONG_INT, etc this is an incorrect assumption. The simplest way to
fix this is to override the MPI_Type_get_envelope and
MPI_Type_get_contents calls with calls that will work on these
datatypes. Note that not all calls to these MPI functions are
replaced, only the ones used when flattening a non-contiguous
datatype.
References #5009
Signed-off-by: Nathan Hjelm <hjelmn@lanl.gov>
This commit fixes a segfault in mtl-portals4 finalize(). The segfault
occurs if finalize() is called without any calls to add_procs(). This
commit resolves the segfault by skipping the progress() loop in
finalize() if the Portals was not initialized.
Signed-off-by: Todd Kordenbrock (thkgcode@gmail.com)
