at_completion_counter is used to indicate if all Active Target
operations have completed on this target.

Signed-off-by: Pavan Balaji <balaji@anl.gov>

For GET-like operations, We should increment the Active Target counter
when the process of sending back data is not completed immediately on
target and a response request is created. We should decrement the counter
when the process of sending back data is completed on target side.

Signed-off-by: Pavan Balaji <balaji@anl.gov>

In the original implementation, for GACC/FOP/CAS, the function
MPIDI_CH3_Finish_rma_op_target (includes operations that should
be performed on target when that operation finishes on target)
is not called when that operation real finishes, but is called
after starting send back data.

Here we fix it to make the function called after sending process
on target is completed.

Signed-off-by: Pavan Balaji <balaji@anl.gov>

Initializing mpiu_chklmem_stk_sp_ to 0 should already have the effect to
initialize mpiu_chklmem_stk_[n_].

Signed-off-by: Antonio J. Pena <apenya@mcs.anl.gov>

// comments are erroneous with --enable-strict=c89

Signed-off-by: Antonio J. Pena <apenya@mcs.anl.gov>

The warning message is:
    warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]

Fixes #2167

Signed-off-by: Antonio J. Pena <apenya@mcs.anl.gov>

Fixes issues introduced in [fdd179c1

] when doing noncontiguous sends
or recvs over portals4. Also make more consistent usage of MPID_Segment
manipulation functions.

Signed-off-by: Antonio J. Pena <apenya@mcs.anl.gov>

The logic used to periodically issue a barrier
for PAMI algorithms that request flow control
was erroneous. The root ended up issuing a barrier
before the non-root tasks.

(ibm) D199034

Signed-off-by: Sameh Sharkawi <sssharka@us.ibm.com>

In this test, during Active Target epoch, the origin process
issues a large GET operation followed by a small PUT operation
to the target process. Win_wait / Win_fence should guarantee
all operations are completed at target when they returns. So
after they return, we make the target process to update one
window location accessed by that GET before. The GET operation
should not get the updated value.

Signed-off-by: Pavan Balaji <balaji@anl.gov>

For Active Target synchronization, the original implementation
does not guarantee the completion of all ops on target side
when Win_wait / Win_fence returns. It is implemented using a
counter, which is decremented when the last operation from that
origin finishes. Win_wait / Win_fence waits until that counter
reaches zero. Problem is that, when the last operation finishes,
the previous GET-like operation (for example with a large data
volume) may have not finished yet. This breaks the semantic of
Win_wait / Win_fence.

Here we fix this by increment the counter whenever we meet a
GET-like operation, and decrement it when that operation finishes
on target side. This will guarantee that when counter reaches
zero and Win_wait / Win_fence returns, all operations are completed
on the target.

Signed-off-by: Pavan Balaji <balaji@anl.gov>

This reverts commit 74189446.

Libraries needed to build MPICH (and ROMIO) were missing from EXTERNAL_LIBS.
This posed an issue when interlibrary dependencies were not supported, as in
static builds, causing user programs to fail to build. Fixes #2172

Signed-off-by: Pavan Balaji <balaji@anl.gov>

Ignore tag matching when MPI_ANY_TAG is passed to a recv operation.

Signed-off-by: Sangmin Seo <sseo@anl.gov>

Since flush call guarantees the completion of operations on target side,
a memory barrier on target side is necessary in order to ensure all store
instructions are exactly performed before that flush call finished on origin
side.

Signed-off-by: Xin Zhao <xinzhao3@illinois.edu>

  Added an empty implementation for MPID_Comm_get_all_failed_procs
  and MPID_Comm_revoke in pamid.

Signed-off-by: Michael Blocksome <blocksom@us.ibm.com>

Signed-off-by: Sameh Sharkawi <sssharka@us.ibm.com>

Signed-off-by: Sameh Sharkawi <sssharka@us.ibm.com>

Pass tail pointer to single direction linked-list API so that
we optimize CONCAT and APPEND operations from O(N) to O(1).

Note that we do not need MPL_LL_APPEND_VS2008 anymore because
we no longer need to work around temporary variable. Similiarly,
we can support MPL_LL_CONCAT for VS2008 now.

Signed-off-by: Pavan Balaji <balaji@anl.gov>

The original implementation of FENCE and PSCW does not
guarantee the remote completion of issued-out RMA operations
when MPI_Win_complete and MPI_Win_fence returns. They only
guarantee the local completion of issued-out operations and
the completion of coming-in operations. This is not correct
if we try to get updated values on target side using synchronizations
with MPI_MODE_NOCHECK.

Here we modify it by making runtime wait for ACKs from all
targets before returning from MPI_Win_fence and MPI_Win_complete.

Signed-off-by: Pavan Balaji <balaji@anl.gov>

The release.pl code was essentially a simple svn to git conversion.
With our current testing model, some of this code is irrelevant.

Signed-off-by: Junchao Zhang <jczhang@mcs.anl.gov>

Igor Ivanov authored Sep 12, 2014 and Pavan Balaji committed Sep 20, 2014

- Changed MXM version that is supported to 3.1+
- Added additional debug output for iov
- Added check for datatype mismatch during noncontiguous data

Signed-off-by: Igor Ivanov <Igor.Ivanov@itseez.com>

Enable using MPI_Win_allocate, which by default turns
on SHM window, in PSCW tests, so that we can test PSCW
on SHM window.

Signed-off-by: Pavan Balaji <balaji@anl.gov>

If MPI_MODE_NOCHECK is passed to MPI_Win_start, we should not
wait for synchronization from targets.

Signed-off-by: Pavan Balaji <balaji@anl.gov>

recv_post_msgs function on origin process is used to wait
for synchronization from target processes, and it can be
called from MPI_Win_start (for targets on SHM) and
MPI_Win_complete (for targets not on SHM). Here we fix the
bug so that origin will not wait for SHM targets again in
MPI_Win_complete.

Signed-off-by: Pavan Balaji <balaji@anl.gov>

Fixed a bug in MPID_Win_allgather to avoid passing 0 for memory registration

(ibm) D199265

Signed-off-by: Michael Blocksome <blocksom@us.ibm.com>

long ago we thought there might be more than one process flushing data,
but that has not borne out.  the much faster MPI_Bcast will suffice, and
we can avoid an MPI_Allreduce.

Signed-off-by: Paul Coffman <pkcoff@us.ibm.com>

comm_split might scale poorly on some systems, and we don't even use the
resulting communicator.  it was used as a marker, but we have enough
other information.

Ken was right: I was being too clever before.  now, simply and more
explicitly check if anyone has a NULL systemwide-hint info object.

Junchao Zhang authored Sep 11, 2014 and Rob Latham committed Sep 11, 2014

Signed-off-by: Rob Latham <robl@mcs.anl.gov>

MPI_Pcontrol does not have the ierror argument.

Fixes #2173

Signed-off-by: William Gropp <wgropp@illinois.edu>

Signed-off-by: Ken Raffenetti <raffenet@mcs.anl.gov>

In MPI, the predefined named constant handles like MPI_INT are link-time
but not necessarily compile-time constants, so they should not be used in
switch/case clauses. If you do so, this kind of code only compiles with
MPICH but not OpenMPI.

Fixes #2169, #2171

Signed-off-by: Rob Latham <robl@mcs.anl.gov>

Deregister until the total amount released exceeds the requested length.
If a registration fails after deregistering some memory regions, then
deregister a next memory region and try to re-register.

There is a maximum message size supported by HCA port. So it's necessary
to divide a memory area to segments when a message size is larger than it.

Resolved warnings reported by --enable-strict configuration.

Signed-off-by: Igor Ivanov <Igor.Ivanov@itseez.com>

This patch implements the "eager" protocol used in MPI_Comm_idup.
Without this patch, test/mpi/threads/comm/comm_idup will crash due to
segmentation fault caused by livelock.

It uses the same algorithm as multi-threaded
MPIR_Get_contextid_sparse_group to avoid deadlock in multi-threaded
context_id allocation, but in a nonblocking way. The nonblocking
mechanism is explained in the comment of function
sched_get_cid_nonblock.

Fixes #2069

Signed-off-by: Pavan Balaji <balaji@anl.gov>

No reviewer.

No reviewer.