Newer x86 processors have a core invariant tsc. On these systems it is
safe to use the rtdtsc instruction as a monotonic timer. This commit
adds a new function to the opal timer code to check if the timer
backend is monotonic. On x86 it checks the appropriate bit and on
other architectures it parrots back the OPAL_TIMER_MONOTONIC value.
Signed-off-by: Nathan Hjelm <hjelmn@lanl.gov>
* When using `MPI_Put` with `MPI_Win_lock_all` a hang is possible since
the `put` is waiting on `eager_send_active` to become `true` but
that variable might not be reset in the case of `MPI_Win_lock_all`
depending on other incoming events (e.g., `post` or ACKs of lock
requests.
Signed-off-by: Joshua Hursey <jhursey@us.ibm.com>
* When using `MPI_Lock`/`MPI_Unlock` with `MPI_Get` and non-contiguous
datatypes is is possible that the unlock finishes too early before
the data is actually present in the recv buffer.
* We need to wait for the irecv to complete before unlocking the target.
This commit waits for the outgoing fragment counts to become equal
before unlocking.
Signed-off-by: Joshua Hursey <jhursey@us.ibm.com>
* If the user uses PSCW synchronization after a Fence then the previous
epoch is not reset which can cause the PSCW to transfer data before
it is ready leading to wrong answers.
* This commit resets the `eager_send_active` in the start call.
Signed-off-by: Joshua Hursey <jhursey@us.ibm.com>
Update ORTE support for dynamic PMIx operations e.g., PMIx_Spawn
Update to track master
Ensure that --disable-pmix-dstore actually disables the dstore. Sync to a few debugger updates
Signed-off-by: Ralph Castain <rhc@open-mpi.org>
By default use mmap() to allocate memory for the symmetric heap.
It is safer and more portable choice than sysv and verbs.
Signed-off-by: Alex Mikheev <alexm@mellanox.com>
This commit fixes errors in the lb and extent of darray datatypes. For
these datatypes the lb should be the start offset of the rank's data
in the array and the extent should be the size of the entire
datatype. In master the lb was always 0 and the extent was always to
small. This commit updates the call to opal_datatype_resize to set the
correct lb and fixes the extent calculation.
Signed-off-by: Nathan Hjelm <hjelmn@lanl.gov>
According to the MPI-3.1 p.52 and p.53 (cited below), a request
created by `MPI_*_INIT` but not yet started by `MPI_START` or
`MPI_STARTALL` is inactive therefore `MPI_WAIT` or its friends
must return immediately if such a request is passed.
The current implementation hangs in `MPI_WAIT` and its friends
in such case because a persistent request is initialized as
`req_complete = REQUEST_PENDING`. This commit fixes the
initialization.
Also, this commit fixes internal requests used in `MPI_PROBE`
and `MPI_IPROBE` which was marked wrongly as persistent.
MPI-3.1 p.52:
We shall use the following terminology: A null handle is a handle
with value MPI_REQUEST_NULL. A persistent request and the handle
to it are inactive if the request is not associated with any ongoing
communication (see Section 3.9). A handle is active if it is neither
null nor inactive. An empty status is a status which is set to return
tag = MPI_ANY_TAG, source = MPI_ANY_SOURCE, error = MPI_SUCCESS, and
is also internally configured so that calls to MPI_GET_COUNT,
MPI_GET_ELEMENTS, and MPI_GET_ELEMENTS_X return count = 0 and
MPI_TEST_CANCELLED returns false. We set a status variable to empty
when the value returned by it is not significant. Status is set in
this way so as to prevent errors due to accesses of stale information.
MPI-3.1 p.53:
One is allowed to call MPI_WAIT with a null or inactive request
argument. In this case the operation returns immediately with empty
status.
Signed-off-by: KAWASHIMA Takahiro <t-kawashima@jp.fujitsu.com>
instead of compilation date __DATE__, use a MPI_Get_library_version() like string
Thanks Alastair McKinstry for the report
Fixesopen-mpi/ompi#2518
Signed-off-by: Gilles Gouaillardet <gilles@rist.or.jp>
fix an issue that can be evidenced with two nodes
n0$ mpirun --host n1:1 --mca oob_tcp_static_ipv4_ports 1234 -np 1 --mca routed radix --mca oob tcp true
Signed-off-by: Gilles Gouaillardet <gilles@rist.or.jp>
