zeroes);
if so, use it for bit-operations like opal_cube_dim and opal_hibit.
Implement two versions of power-of-two.
In case of opal_next_poweroftwo, this reduces the average execution
time from 83 cycles to 4 cycles (Intel Nehalem, icc, -O2, inlining,
measured rdtsc, with loop over 2^27 values).
Numbers for other functions are similar (but of course heavily depend
on the usage, e.g. opal_hibit() with a start of 4 does not save
much). The bsr instruction on AMD Opteron is also not as fast.
- Replace various places where the next power-of-two is computed.
Tested on Intel Nehalem Cluster with openib, compilers GNU-4.6.1 and
Intel-12.0.4 using mpi_testsuite -t "Collective" with 128 processes.
This commit was SVN r25270.
To enable the epochs and the resilient orte code, use the configure flag:
--enable-resilient-orte
This will define both:
ORTE_ENABLE_EPOCH
ORTE_RESIL_ORTE
This commit was SVN r25093.
This merges the branch containing the revamped build system based around converting autogen from a bash script to a Perl program. Jeff has provided emails explaining the features contained in the change.
Please note that configure requirements on components HAVE CHANGED. For example. a configure.params file is no longer required in each component directory. See Jeff's emails for an explanation.
This commit was SVN r23764.
* change comm_init API - no need to pass local rank groups, fca calculates that on its own.
* remove local rank list from module - libfca maintains that now.
* in fca_bcast and fca_reduce - pass root rank index and let libfca figure out the local rank index.
This commit was SVN r23716.
* fixup lookup of supported ops by name:
in ompi 1.5.x the op string representation were changed from MPI_XXX to MPI_OP_XXX (relative to OMPI 1.4.x)
* keep compat between diff versions of FCA
* better error handling (return error if symbol not found)
* register to opal_progress and call fca_progress API
This commit was SVN r23597.
case individual entries aren't used, but dynamic rules are enabled
(i.e., at least one or more of them are not NULL, meaning that they'll
all be assumed to be either NULL or a valid value).
This commit was SVN r23361.
#define CACHE_LINE_SIZE to 128. This name has a conflict on NetBSD,
and it seems kinda odd to have a header file that ''only'' defines a
single value. Also, we'll soon be raising hwloc to be a first-class
item, so having this file around seemed kinda weird.
Therefore, I replaced CACHE_LINE_SIZE with opal_cache_line_size, an
int (in opal/runtime/opal_init.c and opal/runtime/opal.h) on the
rationale that we can fill this in at runtime with hwloc info (trunk
and v1.5/beyond, only). The only place we ''needed'' a compile-time
CACHE_LINE_SIZE was in the BTL SM (for struct padding), so I made a
new BTL_SM_ preprocessor macro with the old CACHE_LINE_SIZE value
(128). That use isn't suitable for run-time hwloc information,
anyway.
This commit was SVN r23349.
Configure Option:
--enable-sysv
MCA Parameter:
mpi_common_sm
mpi_common_sm accepts a comma delimited list of: [sysv],mmap (order
dependent). The first component that is successfully selected is used. For
example, -mca mpi_common_sm sysv,mmap will first try sysv. If sysv is not
successfully selected, then mmap will be used. mmap will be used if
mpi_common_sm is not provided.
Notes:
Please make certain that your system's shmmax limit, or equivalent, is larger
than mpool_sm_min_size. Otherwise, shmget may fail.
This commit was SVN r23260.
make sure that we do not call coll_gather and coll_bcast in the very same
instances, since some collective (intra) modules do not seem to like the fact
if they are called for scount or rcount being zero (for regular
intra-communicator operations, this is handled on the MPI API layer).
Fixes trac:2405
This commit was SVN r23188.
The following Trac tickets were found above:
Ticket 2405 --> https://svn.open-mpi.org/trac/ompi/ticket/2405
