and https://svn.open-mpi.org/trac/ompi/ticket/1853, mallopt() hints do
not always work -- it is possible for memory to be returned to the OS
and therefore OMPI's registration cache becomes invalid.
This commit removes all use of mallopt() and uses a different way to
integrate ptmalloc2 than we have done in the past. In particular, we
use almost exactly the same technique as MX:
* Remove all uses of mallopt, to include the opal/memory mallopt
component.
* Name-shift all of OMPI's internal ptmalloc2 public symbols (e.g.,
malloc -> opal_memory_ptmalloc2_malloc).
* At run-time, use the existing glibc allocator malloc hook function
pointers to fully hijack the glibc allocator with our own
name-shifted ptmalloc2.
* Make the decision whether to hijack the glibc allocator ''at run
time'' (vs. at link time, as previous ptmalloc2 integration
attempts have done). Look at the OMPI_MCA_mpi_leave_pinned
and OMPI_MCA_mpi_leave_pinned_pipeline environment variables and
the existence of /sys/class/infiniband to determine if we should
install the hooks or not.
* As an added bonus, we can now tell if libopen-pal is linked
statically or dynamically, and if we're linked statically, we
assume that munmap intercept support doesn't work.
See the opal/mca/memory/ptmalloc2/README-open-mpi.txt file for all the
gory details about the implementation.
Fixes trac:1853.
This commit was SVN r20921.
The following Trac tickets were found above:
Ticket 1853 --> https://svn.open-mpi.org/trac/ompi/ticket/1853
Adapt orte_process_info to orte_proc_info, and
change orte_proc_info() to orte_proc_info_init().
- Compiled on linux-x86-64
- Discussed with Ralph
This commit was SVN r20739.
figure it out at runtime (really meaning: we'll still default to "0"
unless something explicitly overrides to 1, such as the openib BTL).
This way, ompi_info doesn't confusingly report mpi_leave_pinned==0 for
mpi_leave_pinned, but we end up running with mpi_leave_pinned==1.
Fixes trac:1502.
This commit was SVN r19571.
The following Trac tickets were found above:
Ticket 1502 --> https://svn.open-mpi.org/trac/ompi/ticket/1502
* Use synonym/deprecated MCA param API for some mca base params
* In openib BTL, if we have appropriate memory hooks support, and if
mpi_leave_pinned and mpi_leave_pinned_pipeline were not set by the
user, set mpi_leave_pinned to 1.
* Defer checking mpi_leave_pinned_* until as late as possible (i.e.,
until after the btl's have had a chance to set mpi_leave_pinned to
1):
* in ob1 pml
* in rdma mpool
This commit was SVN r19022.
The following Trac tickets were found above:
Ticket 1379 --> https://svn.open-mpi.org/trac/ompi/ticket/1379
a standalone library named libopenmpi-malloc. Users wanting to
use leave_pinned with ptmalloc2 will now need to link the library
into their application explicitly. All other users will use the
libc-provided allocator instead of Open MPI's ptmalloc2. This change
may be overriden with the configure option enable-ptmalloc2-internal
- The leave_pinned options will now default to using mallopt on
Linux in the cases where ptmalloc2 was not linked in. mallopt
will also only be available if munmap can be intercepted (the
default whenever Open MPI is not compiled with --without-memory-
manager.
- Open MPI will now complain and refuse to use leave_pinned if
no memory intercept / mallopt option is available.
This commit was SVN r18654.
(sometimes after the merge with the ORTE branch), the opal_pointer_array
will became the only pointer_array implementation (the orte_pointer_array
will be removed).
This commit was SVN r17007.
sbrk and the use of mmap(). So rather than checking just for mallopt(),
we should also be checking for those defines when determining if we can
disable giving memory back to the OS or not.
This commit was SVN r11279.
2. fix for MPI_Free_mem, was calling deregister but never called mpool_free.. so
we leaked memory. Still an open issue here though, if the memory is alloc'd
and the mpool doesn't create and cache a registration, we will never find the
mpool to free with.
This commit was SVN r9944.
to let the PML (or io, more generally the low level request manager)
to have it's own release function (what was before the req_fini). This
function will only be called from the low level while the req_free will
be called from the upper level (MPI layer) in order to mark the request
as not used by the user anymore.
From the request point of view the requests will be marked as inactive
everytime we read their status (true for persistent as well). As
MPI_REQUEST_NULL is already marked as inactive, the test and wait functions
are simpler. The drawback is that now we have to change in the
ompi_request_{test|wait} the req_status of the request once we get it's
status.
This commit was SVN r9290.
- move files out of toplevel include/ and etc/, moving it into the
sub-projects
- rather than including config headers with <project>/include,
have them as <project>
- require all headers to be included with a project prefix, with
the exception of the config headers ({opal,orte,ompi}_config.h
mpi.h, and mpif.h)
This commit was SVN r8985.
be used in MPI_Alloc_mem operations. Note that we found an interesting bug in
which if memory was allocated by the sm mpool (via mmap) and then registered
via the mvapi mpool, the registration would fail on certain systems.
Added mca param mpool_base_use_mem_hooks, set to 1 to enable the memory hooks
so that memory is deregistered if the user frees it behind our back. This is
only useful if the mca param mpi_leave_pinned is also set to 1. Otherwise all
registrations are deregistered within the MPI library or via
MPI_Free_buf. After testing we should probably set both mpi_leave_pinned and
mpool_base_use_mem_hooks to default to 1.
This commit was SVN r7415.
multiple components to share a single mpool module (e.g., the
ptl/btl and coll sm components).
- Re-tool the ptl, btl, and coll sm components to first look for the
target mpool module, and if they don't find it, to create it.
- coll sm component now correctly identifies when it is supposed to
run or not (i.e., if all the processes in the communicator are on
the same host). Now we just need to fill in some algorithms. :-)
This commit was SVN r6530.
- move mpool and allocator frameworks back to ompi (from opal)
- specialize the ompi_free_list class to use an mpool instance
- un-specialize opal_free_list to *not* use mpool; just use malloc/free
This commit was SVN r6292.
