This commit fixes a hang reported by @nysal which happens when a
request is completed after a sync object is created but before the
sync object can be assigned to the request. In this case we need to
set the sync signaling field to false to ensure WAIT_SYNC_RELEASE does
not hang.
Fixesopen-mpi/ompi#1828
Signed-off-by: Nathan Hjelm <hjelmn@lanl.gov>
The OPAL_ENABLE_MULTI_THREADS macro is always defined as 1. This was
causing us to always use the multi-thread path for synchronization
objects. The code has been updated to use the opal_using_threads()
function. When MPI_THREAD_MULTIPLE support is disabled at build time
(2.x only) this function is a macro evaluating to false so the
compiler will optimize out the MT-path in this case. The
OPAL_ATOMIC_ADD_32 macro has been removed and replaced by the existing
OPAL_THREAD_ADD32 macro.
Signed-off-by: Nathan Hjelm <hjelmn@lanl.gov>
This commit fixes a performance regression introduced by the request
rework. We were always using the multi-thread path because
OPAL_ENABLE_MULTI_THREADS is either not defined or always defined to 1
depending on the Open MPI version. To fix this I removed the
conditional and added a conditional on opal_using_threads(). This path
will be optimized out in 2.0.0 in a non-thread-multiple build as
opal_using_threads is #defined to false in that case.
Fixesopen-mpi/ompi#1806
Signed-off-by: Nathan Hjelm <hjelmn@lanl.gov>
This commit fixes a bug in waitany that causes the code to go past the
beginning of the request array. The loop conditional i >= 0 is invalid
since i is unsigned. Changed to loop to check (i+1) > 0.
Signed-off-by: Nathan Hjelm <hjelmn@lanl.gov>
I am not sure if we should continue to maintain the request support
for FT_CR, but I tried here to simplify the code while maintaining
the same meaning.
Rewrite the ompi_request_complete function to take in account the
with_signal argument. Change the comment to explain the expected
behavior.
Alter all the ompi_request_complete uses to make sure the status of the
request is set before calling ompi_request_complete.
bot🏷️enhancement
This commit fixes two bugs in MPI_Wait_any:
- If all requests are inactive then the sync wait would hang forever
because no requests are attached to the sync.
- The request pointer was pointing to the request before the completed
request which caused the wrong request to be freed or marked inactive.
MPI_Wait_some had a similar issue if all the requests were pending.
These issues were identified by MTT.
Signed-off-by: Nathan Hjelm <hjelmn@lanl.gov>
The request.h header is unfortunately included files in the C++
bindings. C++ does not allow assigning from void * to another
pointer without a cast. This commit adds the cast. We can clean this
up when the C++ bindings are deleted.
Fixesopen-mpi/ompi#1707
Signed-off-by: Nathan Hjelm <hjelmn@lanl.gov>
* Remodel the request.
Added the wait sync primitive and integrate it into the PML and MTL
infrastructure. The multi-threaded requests are now significantly
less heavy and less noisy (only the threads associated with completed
requests are signaled).
* Fix the condition to release the request.
If during the request completion callback we post another request that
completes right away (such a small send or a match for an unexpected
short message) we will try to complete the second request while holding
the lock for the completion of the first. For performance reasons
(mainly to avoid unlocking and locking the request mutex several times)
we have made the request lock recursive.
Use of the old ompi_free_list_t and ompi_free_list_item_t is
deprecated. These classes will be removed in a future commit.
This commit updates the entire code base to use opal_free_list_t and
opal_free_list_item_t.
Notes:
OMPI_FREE_LIST_*_MT -> opal_free_list_* (uses opal_using_threads ())
Signed-off-by: Nathan Hjelm <hjelmn@lanl.gov>
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.
MPI_Comm_idup.
As part of this work I implemented a basic request scheduler in
ompi/comm/comm_request.c. This scheduler might be useful for more
than just communicator requests and could be moved to ompi/request
if there is a demand. Otherwise I will leave it where it is.
Added a non-blocking version of ompi_comm_set to support ompi_comm_idup.
The call makes a recursive call to comm_dup and a non-blocking version
was needed. To simplify the code the blocking version calls the nonblocking
version and waits on the resulting request if one exists.
cmr=v1.7.4:reviewer=jsquyres:ticket=trac:3796
This commit was SVN r29334.
The following Trac tickets were found above:
Ticket 3796 --> https://svn.open-mpi.org/trac/ompi/ticket/3796
Calling OMPI_REQUEST_INIT puts the request into an _INACTIVE state
instead of an _INVALID state, which we don't want if it's been
simply been constructed, e.g., in a free_list. Without this change a
future change to call destructors at free list destruction time will
result in request dtor state assertion failures.
Reviewed-by: bosilca
cmr=v1.7.4:reviewer=bosilca
This commit was SVN r29095.
requests. This patch fixes trac:3475.
CMR v1.6, v1.7
This commit was SVN r28431.
The following Trac tickets were found above:
Ticket 3475 --> https://svn.open-mpi.org/trac/ompi/ticket/3475
- fix the Fortran layer to use new macros to convert Fortran-to-C status
- change the C internals to pull out old OMPI_SET_STATUS* macros
Also, change name of "status" argument in topo_test_f.c to "topo_type".
This commit was SVN r27403.
1. New mpifort wrapper compiler: you can utilize mpif.h, use mpi, and use mpi_f08 through this one wrapper compiler
1. mpif77 and mpif90 still exist, but are sym links to mpifort and may be removed in a future release
1. The mpi module has been re-implemented and is significantly "mo' bettah"
1. The mpi_f08 module offers many, many improvements over mpif.h and the mpi module
This stuff is coming from a VERY long-lived mercurial branch (3 years!); it'll almost certainly take a few SVN commits and a bunch of testing before I get it correctly committed to the SVN trunk.
== More details ==
Craig Rasmussen and I have been working with the MPI-3 Fortran WG and Fortran J3 committees for a long, long time to make a prototype MPI-3 Fortran bindings implementation. We think we're at a stable enough state to bring this stuff back to the trunk, with the goal of including it in OMPI v1.7.
Special thanks go out to everyone who has been incredibly patient and helpful to us in this journey:
* Rolf Rabenseifner/HLRS (mastermind/genius behind the entire MPI-3 Fortran effort)
* The Fortran J3 committee
* Tobias Burnus/gfortran
* Tony !Goetz/Absoft
* Terry !Donte/Oracle
* ...and probably others whom I'm forgetting :-(
There's still opportunities for optimization in the mpi_f08 implementation, but by and large, it is as far along as it can be until Fortran compilers start implementing the new F08 dimension(..) syntax.
Note that gfortran is currently unsupported for the mpi_f08 module and the new mpi module. gfortran users will a) fall back to the same mpi module implementation that is in OMPI v1.5.x, and b) not get the new mpi_f08 module. The gfortran maintainers are actively working hard to add the necessary features to support both the new mpi_f08 module and the new mpi module implementations. This will take some time.
As mentioned above, ompi/mpi/f77 and ompi/mpi/f90 no longer exist. All the fortran bindings implementations have been collated under ompi/mpi/fortran; each implementation has its own subdirectory:
{{{
ompi/mpi/fortran/
base/ - glue code
mpif-h/ - what used to be ompi/mpi/f77
use-mpi-tkr/ - what used to be ompi/mpi/f90
use-mpi-ignore-tkr/ - new mpi module implementation
use-mpi-f08/ - new mpi_f08 module implementation
}}}
There's also a prototype 6-function-MPI implementation under use-mpi-f08-desc that emulates the new F08 dimension(..) syntax that isn't fully available in Fortran compilers yet. We did that to prove it to ourselves that it could be done once the compilers fully support it. This directory/implementation will likely eventually replace the use-mpi-f08 version.
Other things that were done:
* ompi_info grew a few new output fields to describe what level of Fortran support is included
* Existing Fortran examples in examples/ were renamed; new mpi_f08 examples were added
* The old Fortran MPI libraries were renamed:
* libmpi_f77 -> libmpi_mpifh
* libmpi_f90 -> libmpi_usempi
* The configury for Fortran was consolidated and significantly slimmed down. Note that the F77 env variable is now IGNORED for configure; you should only use FC. Example:
{{{
shell$ ./configure CC=icc CXX=icpc FC=ifort ...
}}}
All of this work was done in a Mercurial branch off the SVN trunk, and hosted at Bitbucket. This branch has got to be one of OMPI's longest-running branches. Its first commit was Tue Apr 07 23:01:46 2009 -0400 -- it's over 3 years old! :-) We think we've pulled in all relevant changes from the OMPI trunk (e.g., Fortran implementations of the new MPI-3 MPROBE stuff for mpif.h, use mpi, and use mpi_f08, and the recent Fujitsu Fortran patches).
I anticipate some instability when we bring this stuff into the trunk, simply because it touches a LOT of code in the MPI layer in the OMPI code base. We'll try our best to make it as pain-free as possible, but please bear with us when it is committed.
This commit was SVN r26283.
Note that the previous patch allowed the following test to -pass-:
ompi-tests/mpich_tester/mpich_pt2pt/truncmult.c
This patch makes that test -fail- due to the assumption that MPI_Wait will update the status.MPI_ERROR field. In Open MPI we do not do this, so the MPI_ERROR field being inspected will remain set to MPI_ERR_PENDING. See comments in req_wait.c for why we do this.
If we change the test to not inspect the MPI_ERROR field after calling MPI_Wait successfully, then the test would pass correctly with this patch.
This change was made per discussion on the below email thread:
http://www.open-mpi.org/community/lists/devel/2012/03/10753.php
This commit was SVN r26177.
The following SVN revision numbers were found above:
r26172 --> open-mpi/ompi@03a33417d5
request completion callback
* Use the completion callback pointer to remove all need for opal_progress
calls in the one-sided layer
This commit was SVN r24848.
No need for any CMRs to 1.5... that was already done in CMR 2728.
This commit was SVN r24545.
The following SVN revision numbers were found above:
r22841 --> open-mpi/ompi@b400b84162
This is a fairly intrusive change, but outside of the moving of opal/event to opal/mca/event, the only changes involved (a) changing all calls to opal_event functions to reflect the new framework instead, and (b) ensuring that all opal_event_t objects are properly constructed since they are now true opal_objects.
Note: Shiqing has just returned from vacation and has not yet had a chance to complete the Windows integration. Thus, this commit almost certainly breaks Windows support on the trunk. However, I want this to have a chance to soak for as long as possible before I become less available a week from today (going to be at a class for 5 days, and thus will only be sparingly available) so we can find and fix any problems.
Biggest change is moving the libevent code from opal/event to a new opal/mca/event framework. This was done to make it much easier to update libevent in the future. New versions can be inserted as a new component and tested in parallel with the current version until validated, then we can remove the earlier version if we so choose. This is a statically built framework ala installdirs, so only one component will build at a time. There is no selection logic - the sole compiled component simply loads its function pointers into the opal_event struct.
I have gone thru the code base and converted all the libevent calls I could find. However, I cannot compile nor test every environment. It is therefore quite likely that errors remain in the system. Please keep an eye open for two things:
1. compile-time errors: these will be obvious as calls to the old functions (e.g., opal_evtimer_new) must be replaced by the new framework APIs (e.g., opal_event.evtimer_new)
2. run-time errors: these will likely show up as segfaults due to missing constructors on opal_event_t objects. It appears that it became a typical practice for people to "init" an opal_event_t by simply using memset to zero it out. This will no longer work - you must either OBJ_NEW or OBJ_CONSTRUCT an opal_event_t. I tried to catch these cases, but may have missed some. Believe me, you'll know when you hit it.
There is also the issue of the new libevent "no recursion" behavior. As I described on a recent email, we will have to discuss this and figure out what, if anything, we need to do.
This commit was SVN r23925.
be used for 64-bit SPARC because of performance
implications. Also added minor optimization to
macro.
This fixes trac:2526.
This commit was SVN r23590.
The following Trac tickets were found above:
Ticket 2526 --> https://svn.open-mpi.org/trac/ompi/ticket/2526
status structure or the _ucount field in the status structure.
On 64-bit sparc, the macros resolve into integer array assignments.
For all others, they are just simple assignments. This fixes
possible BUS errors seen when running on the SPARC processor.
This bug was introduced when the _count field changed from an int
into a size_t. See the changes to request.h for additional details.
This commit fixes trac:2514.
This commit was SVN r23554.
The following Trac tickets were found above:
Ticket 2514 --> https://svn.open-mpi.org/trac/ompi/ticket/2514
step is the configure and Fortran mojo that Jeff will put in. Until then I
guess the Fortran interface is broken (at least all functions using the hidden
count firld in the MPI_Status).
This commit was SVN r23467.
Many of the OPAL_ENABLE_FT should be OPAL_ENABLE_FT_CR, so fix those.
The OPAL Layer INC should call opal_output on restart so that it can refresh the string it prints to reflect the current pid/hostname which may have changed.
This commit was SVN r22824.
#if defined (c_plusplus)
defined (__cplusplus)
followed by
extern "C" {
and the closing counterpart by BEGIN_C_DECLS and END_C_DECLS.
Notable exceptions are:
- opal/include/opal_config_bottom.h:
This is our generated code, that itself defines BEGIN_C_DECL and
END_C_DECL
- ompi/mpi/cxx/mpicxx.h:
Here we do not include opal_config_bottom.h:
- Belongs to external code:
opal/mca/backtrace/darwin/MoreBacktrace/MoreDebugging/MoreBacktrace.c
opal/mca/backtrace/darwin/MoreBacktrace/MoreDebugging/MoreBacktrace.h
- opal/include/opal/prefetch.h:
Has C++ specific macros that are protected:
- Had #if ... } #endif _and_ END_C_DECLS (aka end up with 2x
END_C_DECLS)
ompi/mca/btl/openib/btl_openib.h
- opal/event/event.h has #ifdef __cplusplus as BEGIN_C_DECLS...
- opal/win32/ompi_process.h: had extern "C"\n {...
opal/win32/ompi_process.h: dito
- ompi/mca/btl/pcie/btl_pcie_lex.l: needed to add *_C_DECLS
ompi/mpi/f90/test/align_c.c: dito
- ompi/debuggers/msgq_interface.h: used #ifdef __cplusplus
- ompi/mpi/f90/xml/common-C.xsl: Amend
Tested on linux using --with-openib and --with-mx
The following do not contain either opal_config.h, orte_config.h or
ompi_config.h
(but possibly other header files, that include one of the above):
ompi/mca/bml/r2/bml_r2_ft.h
ompi/mca/btl/gm/btl_gm_endpoint.h
ompi/mca/btl/gm/btl_gm_proc.h
ompi/mca/btl/mx/btl_mx_endpoint.h
ompi/mca/btl/ofud/btl_ofud_endpoint.h
ompi/mca/btl/ofud/btl_ofud_frag.h
ompi/mca/btl/ofud/btl_ofud_proc.h
ompi/mca/btl/openib/btl_openib_mca.h
ompi/mca/btl/portals/btl_portals_endpoint.h
ompi/mca/btl/portals/btl_portals_frag.h
ompi/mca/btl/sctp/btl_sctp_endpoint.h
ompi/mca/btl/sctp/btl_sctp_proc.h
ompi/mca/btl/tcp/btl_tcp_endpoint.h
ompi/mca/btl/tcp/btl_tcp_ft.h
ompi/mca/btl/tcp/btl_tcp_proc.h
ompi/mca/btl/template/btl_template_endpoint.h
ompi/mca/btl/template/btl_template_proc.h
ompi/mca/btl/udapl/btl_udapl_eager_rdma.h
ompi/mca/btl/udapl/btl_udapl_endpoint.h
ompi/mca/btl/udapl/btl_udapl_mca.h
ompi/mca/btl/udapl/btl_udapl_proc.h
ompi/mca/mtl/mx/mtl_mx_endpoint.h
ompi/mca/mtl/mx/mtl_mx.h
ompi/mca/mtl/psm/mtl_psm_endpoint.h
ompi/mca/mtl/psm/mtl_psm.h
ompi/mca/pml/cm/pml_cm_component.h
ompi/mca/pml/csum/pml_csum_comm.h
ompi/mca/pml/dr/pml_dr_comm.h
ompi/mca/pml/dr/pml_dr_component.h
ompi/mca/pml/dr/pml_dr_endpoint.h
ompi/mca/pml/dr/pml_dr_recvfrag.h
ompi/mca/pml/example/pml_example.h
ompi/mca/pml/ob1/pml_ob1_comm.h
ompi/mca/pml/ob1/pml_ob1_component.h
ompi/mca/pml/ob1/pml_ob1_endpoint.h
ompi/mca/pml/ob1/pml_ob1_rdmafrag.h
ompi/mca/pml/ob1/pml_ob1_recvfrag.h
ompi/mca/pml/v/pml_v_output.h
opal/include/opal/prefetch.h
opal/mca/timer/aix/timer_aix.h
opal/util/qsort.h
test/support/components.h
This commit was SVN r21855.
The following SVN revision numbers were found above:
r2 --> open-mpi/ompi@58fdc18855
the debugger plugins into files suffixed by _dbg.h.
This commit was SVN r21404.
The following Trac tickets were found above:
Ticket 1931 --> https://svn.open-mpi.org/trac/ompi/ticket/1931
not end up in OPAL
- Will post an updated patch for the OMPI_ALIGNMENT_ parts (within C).
This commit was SVN r21342.
The following SVN revision numbers were found above:
r21330 --> open-mpi/ompi@95596d1814
into the OPAL namespace, eliminating cases like opal/util/arch.c
testing for ompi_fortran_logical_t.
As this is processor- and compiler-related information
(e.g. does the compiler/architecture support REAL*16)
this should have been on the OPAL layer.
- Unifies f77 code using MPI_Flogical instead of opal_fortran_logical_t
- Tested locally (Linux/x86-64) with mpich and intel testsuite
but would like to get this week-ends MTT output
- PLEASE NOTE: configure-internal macro-names and
ompi_cv_ variables have not been changed, so that
external platform (not in contrib/) files still work.
This commit was SVN r21330.
OMPI_* to OPAL_*. This allows opal layer to be used more independent
from the whole of ompi.
NOTE: 9 "svn mv" operations immediately follow this commit.
This commit was SVN r21180.
