We've been fighting the battle of trying to create a regex generator and
parser that can handle arbitrary hostname schemes - without long-term
success. The worst of it is that there is no way of checking to see if
the computed regex is correct short of parsing it and doing a
character-by-character comparison with the original string. Ugh...there
has to be a better solution.
One option is to investigate using 3rd-party regex libraries as
those are coming from communities whose sole focus is resolving that
problem. However, someone would need to spend the time to investigate
it, and we'd have to find a license-friendly implementation.
Another option is to quit beating our heads against the wall and just
compress the information. It won't be as much of a reduction, but we
also won't keep hitting scenarios where things break. In this case, it
seems that "perfection" is definitely the enemy of "good enough".
This PR implements the compression option while retaining the
possibility of people adding regex-generating components. The
compression code used in ORTE is consolidated into the opal/compress
framework. That framework currently held bzip and gzip components for
use in compressing checkpoint files - since we no longer support C/R, I
have .opal_ignore'd those components.
However, I have left the original framework APIs alone in case someone
ever decides to redo C/R. The APIs of interest here are added to the
framework - specifically, the "compress_block" and "decompress_block"
functions. I then moved the ORTE zlib compression code into a new
component in this framework.
Unfortunately, the framework currently is a single-select one - i.e.,
only one active component at a time. Since I .opal_ignore'd the other
two and made the priority of zlib high, this isn't a problem. However,
if someone wants to re-enable bzip/gzip or add another component, they
might need to transition opal/compress to a multi-select framework.
Included changes:
* Consolidate the compression code into the opal/compress framework
* Move the ORTE zlib compression code into a new opal/compress/zlib
component
* Ignore the bzip and gzip components in opal/compress framework
* Add a "compress_base_limit" MCA param to set the threshold above which
we compress data - defaults to 4096 bytes
* Delete stale brucks and rcd components from orte/grpcomm framework
* Delete the orte/regx framework
* Update the launch system to use opal/compress instead of string regex
* Provide a default module if no zlib is available
* Fix some misc multi-node issues
* Properly generate the nidmap in response to a "connection warmup"
message so the remote daemon knows the children it needs to launch.
* Remove stale references to orte_node_regex
* opal_byte_object_t's are not OPAL objects - properly release allocated
memory.
* Set the topology
* Currently only handling homogeneous case
* Update the compress framework files to conform
* Consolidate open/close into one "frame" file. Ensure we open/close the
framework
Signed-off-by: Ralph Castain <rhc@pmix.org>
be more careful about closing framewworks as part of
orte_finalize. Owing to recent restructuring in opal to handle
finalize in a more general fashion, the missing framework
closes were causing meltdowns as the mca vars subsystem
was cleaning itself up.
This problem was recently reported by Siegmar:
https://www.mail-archive.com/users@lists.open-mpi.org//msg32946.html
Signed-off-by: Howard Pritchard <howardp@lanl.gov>
Resolve a race condition between registering for a file to be removed upon termination and actual creation of that file by providing attributes that identify whether the path is a file or directory. This removes the need for PMIx to detect the difference.
Refs #4686
Signed-off-by: Ralph Castain <rhc@open-mpi.org>
Handle the need for different regex generator/parsers by moving the
orte/util/nidmap and orte/util/regex code into a new "regx" framework.
Use the original code to complete a "fwd" component, and create a
scaffold for IBM's "reverse" component.
Signed-off-by: Ralph Castain <rhc@open-mpi.org>
If available, have apps use registration capability to cleanup their session directories. Setup capability for vader to register its shared memory file location - let someone familiar with that code do so.
Final cleanup to track uid/gid, update the opal/pmix API to pass flags for ignore and leave top directory alone
Signed-off-by: Ralph Castain <rhc@open-mpi.org>
Still in the "needs to be done" category:
* mapping/ranking/binding options aren't correctly supported
* if the DVM encounters some errors (e.g., not enough resources for the job), the resulting error is globally set and impacts any subsequent job submission
Signed-off-by: Ralph Castain <rhc@open-mpi.org>
Update to support passing of HWLOC shmem topology to client procs
Update use of distance API per @bgoglin
Have the openib component lookup its object in the distance matrix
Bring usnic up-to-date
Restore binding for hwloc2
Signed-off-by: Ralph Castain <rhc@open-mpi.org>
passed to make it all flow thru the opal/pmix "put/get" operations. Update the PMIx code to latest master to pickup some required behaviors.
Remove the no-longer-required get_contact_info and set_contact_info from the RML layer.
Add an MCA param to allow the ofi/rml component to route messages if desired. This is mainly for experimentation at this point as we aren't sure if routing wi
ll be beneficial at large scales. Leave it "off" by default.
Signed-off-by: Ralph Castain <rhc@open-mpi.org>
Remove the opal_ignore from the RML/OFI component, but disable that component unless the user specifically requests it via the "rml_ofi_desired=1" MCA param. This will let us test compile in various environments without interfering with operations while we continue to debug
Fix an error when computing the number of infos during server init
Signed-off-by: Ralph Castain <rhc@open-mpi.org>
Set the daemons' state to "running" and mark them as "alive" by default when constructing the nidmap
Get the DVM running again
Fix direct modex by eliminating race condition caused by releasing data while sending it
Up the size limit before compressing
Signed-off-by: Ralph Castain <rhc@open-mpi.org>
onto the backend daemons. By default, let mpirun only pack the app_context
info and send that to the backend daemons where the mapping will
be done. This significantly reduces the computational time on mpirun as it isn't
running up/down the topology tree computing thousands of binding
locations, and it reduces the launch message to a very small number of
bytes.
When running -novm, fall back to the old way of doing things
where mpirun computes the entire map and binding, and then sends
the full info to the backend daemon.
Add a new cmd line option/mca param --fwd-mpirun-port that allows
mpirun to dynamically select a port, but then passes that back to
all the other daemons so they will use that port as a static port
for their own wireup. In this mode, we no longer "phone home" directly
to mpirun, but instead use the static port to wireup at daemon
start. We then use the routing tree to rollup the initial
launch report, and limit the number of open sockets on mpirun's node.
Update ras simulator to track the new nidmap code
Cleanup some bugs in the nidmap regex code, and enhance the error message for not enough slots to include the host on which the problem is found.
Update gadget platform file
Initialize the range count when starting a new range
Fix the no-np case in managed allocation
Ensure DVM node usage gets cleaned up after each job
Update scaling.pl script to use --fwd-mpirun-port. Pre-connect the daemon to its parent during launch while we are otherwise waiting for the daemon's children to send their "phone home" rollup messages
Signed-off-by: Ralph Castain <rhc@open-mpi.org>
Note: since the discovered cpus are filtered against this list, #slots will be set to the #cpus in the list if no slot values are given in a -host or -hostname specification.
Signed-off-by: Ralph Castain <rhc@open-mpi.org>
Cleanup a typo, and remove no longer needed MCA params for hetero nodes and hetero apps. Hetero nodes will always be automatically detected. We don't support a mix of 32 and 64 bit apps
Modify the orte_node_t to use orte_topology_t instead of hwloc_topology_t, updating all the places that use it. Ensure that we properly update topology when we see a different one on a compute node.
Signed-off-by: Ralph Castain <rhc@open-mpi.org>
There are only five places in the non-daemon code paths where opal_hwloc_topology is currently referenced:
* shared memory BTLs (sm, smcuda). I have added a code path to those components that uses the location string
instead of the topology itself, if available, thus avoiding instantiating the topology
* openib BTL. This uses the distance matrix. At present, I haven't developed a method
for replacing that reference. Thus, this component will instantiate the topology
* usnic BTL. Uses the distance matrix.
* treematch TOPO component. Does some complex tree-based algorithm, so it will instantiate
the topology
* ess base functions. If a process is direct launched and not bound at launch, this
code attempts to bind it. Thus, procs in this scenario will instantiate the
topology
Note that instantiating the topology on complex chips such as KNL can consume
megabytes of memory.
Fix pernode binding policy
Properly handle the unbound case
Correct pointer usage
Do not free static error messages!
Signed-off-by: Ralph Castain <rhc@open-mpi.org>
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>
there is no need for a configure option as well - so remove the
--enable-orte-static-ports configure option. When decoding the daemon
nidmap, mark new daemons as ALIVE by default - we will discover dead
ones as we go.
Signed-off-by: Ralph Castain <rhc@open-mpi.org>
Still not completely done as we need a better way of tracking the routed module being used down in the OOB - e.g., when a peer drops connection, we want to remove that route from all conduits that (a) use the OOB and (b) are routed, but we don't want to remove it from an OFI conduit.
Multiple conduits can exist at the same time, and can even point to the same base transport. Each conduit can have its own characteristics (e.g., flow control) based on the info keys provided to the "open_conduit" call. For ease during the transition period, the "legacy" RML interfaces remain as wrappers over the new conduit-based APIs using a default conduit opened during orte_init - this default conduit is tied to the OOB framework so that current behaviors are preserved. Once the transition has been completed, a one-time cleanup will be done to update all RML calls to the new APIs and the "legacy" interfaces will be deleted.
While we are at it: Remove oob/usock component to eliminate the TMPDIR length problem - get all working, including oob_stress
