MPI standard states a user MPI_Op and/or user MPI_Datatype can be free'd
after a call to a non blocking collective and before the non-blocking
collective completes.
Retain user (only) MPI_Op and MPI_Datatype when the non blocking call is
invoked, and set a request callback so they are free'd when the MPI_Request
completes.
Thanks Thomas Ponweiser for reporting this
Fixesopen-mpi/ompi#2151Fixesopen-mpi/ompi#1304
Signed-off-by: Gilles Gouaillardet <gilles@rist.or.jp>
Added information on the type of objects provided in the list as well as
the required fields for them.
Signed-off-by: William Zhang <wilzhang@amazon.com>
The parameter names were misleading due to implying a single interface
instead of a list. This will provide more clarity in distinguishing the
list of interfaces from each individual interface.
Signed-off-by: William Zhang <wilzhang@amazon.com>
Start optimizing the code.
This commit divides the operations in 2 parts, the first, outside the
critical part, deals with partial blocks of predefined elements, and the
second, inside the critical path, only deals with full blocks of
elements. This reduces the number of expensive operations in the
critical path and results in a decent performance increase.
Signed-off-by: George Bosilca <bosilca@icl.utk.edu>
Amazing how a bad instruction scheduling can have such a drastic impact
on the code performance. With this change, the get a boost of at least
50% on the performance of data with a small blocklen and/or count.
Signed-off-by: George Bosilca <bosilca@icl.utk.edu>
Optimize contiguous loops by collapsing them into a single element.
During datatype optimization collapse similar elements into larger
blocks.
Signed-off-by: George Bosilca <bosilca@icl.utk.edu>
Upon detecting a datatype loop representation skip the entire loop
according the the remaining space.
Signed-off-by: George Bosilca <bosilca@icl.utk.edu>
- optimize handling of contiguous with gaps datatypes.
- fixes a performance issue for all datatypes with a count of 1.
- optimize the pack/unpack of contiguous with gaps datatype.
- optimize the case of blocklen == 1
Signed-off-by: George Bosilca <bosilca@icl.utk.edu>
Move toward a base type of vector (count, type, blocklen, extent, disp)
with disp and extent applying toward the count repertition and blocklen
being a contiguous memory of type type.
Implement 2 optimizations on this description used during type_commit:
- collapse: successive similar datatype descriptions are collapsed
together with an increased count.
- fusion: fuse successive datatype descriptions in order to minimize the
number of resulting memcpy during pack/unpack.
Fixes at the OMPI datatype level including:
- Fix the create_hindexed and vector creation.
- Fix the handling of [get|set]_elements and _count.
- Correctly compute the dispacement for block indexed types.
- Support the MPI_LB and MPI_UB deprecation, aka. OMPI_ENABLE_MPI1_COMPAT.
Signed-off-by: George Bosilca <bosilca@icl.utk.edu>
Unfortunately, https://github.com/open-mpi/ompi/pull/6797 was merged
before all feedback was received (39b799d936). This PR is a minor
addendum to that commit.
This PR simply removes a meaningless `= {0}` operation.
The use of gethostname() here -- and many other places in the code
base -- is technically unsafe. See
https://github.com/open-mpi/ompi/issues/6801 for a further description
of the issue and a suggested fix. But the risk is quite low;
real-world hostnames are usually much shorter than
OPAL_MAXHOSTNAMELEN. Hence, this PR just removes the meaningless
operation and leaves a real fix for gethostname() usage to a potential
future PR.
Signed-off-by: Jeff Squyres <jsquyres@cisco.com>
Previously the verbose output of if_linux_ipv6_open looked like this:
found interface ab c: 0ab: a b: abc: 0 0: a 0🔡 0 0 scope 0
This changes the output to:
found interface eth0 inet6 ab0c🆎a0b🔤0:a00:abcd:0 scope 0
Signed-off-by: Orivej Desh <orivej@gmx.fr>
Signed-off-by: Jeff Squyres <jsquyres@cisco.com>
A typical parameter of opal_output_verbose() is ORTE_NAME_PRINT(...),
which is an expensive macro.
Most of the time, this is unnecessary since the verbosity level is too high.
Make opal_output_verbose() a macro so such arguments are only evaluated if the
verbosity is low enough.
Signed-off-by: Gilles Gouaillardet <gilles@rist.or.jp>
Since array_of_errcodes is only allocated when MPI_ERRCODES_IGNORE is not used,
it should not be cleaned when MPI_ERRCODES_IGNORE is used.
Correctly allocate array_of_errcodes with the right size (e.g. maxprocs).
Thanks Gyevi-Nagy Laszlo for reporting this issue.
Signed-off-by: Gilles Gouaillardet <gilles@rist.or.jp>
do not check some input parameters when an {in,out}degree is zero
Thanks Junchao Zhang for analyzing and reporting this issue.
Signed-off-by: Gilles Gouaillardet <gilles@rist.or.jp>
To avoid fully initializing the osc/ucx component for MPI application
that are not using One-Sided functionality, the initialization happens
at the first MPI window creation.
This commit ensures atomicity of global state modifications.
Signed-off-by: Artem Polyakov <artpol84@gmail.com>
