* Remove the connect() timeout code, as it had some nasty race conditions
when connections were established as the trigger was firing. A better
solution has been found for the cluster where this was needed, so just
removing it was easiest.
* When a fatal error (too many connection failures) occurs, set an error
on messages in the queue even if there isn't an active message. The
first message to any peer will be queued without being active (and
so will all subsequent messages until the connection is established),
and the orteds will hang until that first message completes. So if
an orted can never contact it's peer, it will never exit and just sit
waiting for that message to complete.
* Cover an interesting RST condition in the connect code. A connection
can complete the three-way handshake, the connector can even send
some data, but the server side will drop the connection because it
can't move it from the half-connected to fully-connected state because
of space shortage in the listen backlog queue. This causes a RST to
be received first time that recv() is called, which will be when waiting
for the remote side of the OOB ack. In this case, transition the
connection back into a CLOSED state and try to connect again.
* Add levels of debugging, rather than all or nothing, each building on
the previous level. 0 (default) is hard errors. 1 is connection
error debugging info. 2 is all connection info. 3 is more state
info. 4 includes all message info.
* Add some hopefully useful comments
This commit was SVN r14261.
OPAL_FREE_LIST_WAIT/RETURN will not use locks in a non-threaded build
conditionaly use locks if non-threaded around the OPAL_FREE_LIST_WAIT/RETURN
seems to fix the issue
Tested at 4K processes and seems to work..
This commit was SVN r14135.
listen thread, but we're not the HNP. This is better than not starting up
any listen mode, which is what we were doing before :/
This commit was SVN r14133.
This merge adds Checkpoint/Restart support to Open MPI. The initial
frameworks and components support a LAM/MPI-like implementation.
This commit follows the risk assessment presented to the Open MPI core
development group on Feb. 22, 2007.
This commit closes trac:158
More details to follow.
This commit was SVN r14051.
The following SVN revisions from the original message are invalid or
inconsistent and therefore were not cross-referenced:
r13912
The following Trac tickets were found above:
Ticket 158 --> https://svn.open-mpi.org/trac/ompi/ticket/158
its bigger than the timeout for the connect() call, just don't register
the handler by default and fall back to connect() timing out. Should give
much happier performance on big clusters.
This commit was SVN r13639.
the connect() timeout, so that we'll use that rather than our own timeout by
defualt. There timeout was set low for Big Red, but causes problems for very
large clusters, as there's no way to wire them up in 10 seconds most of the
time.
This commit was SVN r13062.
I know it's just a technicality, but it is time to address such things rather than just letting them continue to propagate. :-)
This commit was SVN r12954.
I found only two places that were looking at the tokens:
1. the odls - we used the tokens to separately process the globals container data from everything else. In this case, I left the subscription that returned the globals data alone, but "stripped" the subscription that returned the launch data for the procs. These subscriptions have nothing to do with the xcast message.
2. the pml_base_modex - the callback function was getting process names from the returned tokens. Actually, this function was doing a very bad thing - it was assuming that the first token returned was *always* the process name. This is currently true, but is one of those assumptions that someone could have easily changed - and suddenly found the system inexplicably failing. I modified the function to (a) get the name sent back to us, (b) "stripped" the value structures of tokens and segment strings, and (c) correctly obtained process names from the returned values. I also reindented the heck out of the code so it was legible (at least, to my old eyes).
This commit was SVN r12813.
Accordingly, there are new APIs to the name service to support the ability to get a job's parent, root, immediate children, and all its descendants. In addition, the terminate_job, terminate_orted, and signal_job APIs for the PLS have been modified to accept attributes that define the extent of their actions. For example, doing a "terminate_job" with an attribute of ORTE_NS_INCLUDE_DESCENDANTS will terminate the given jobid AND all jobs that descended from it.
I have tested this capability on a MacBook under rsh, Odin under SLURM, and LANL's Flash (bproc). It worked successfully on non-MPI jobs (both simple and including a spawn), and MPI jobs (again, both simple and with a spawn).
This commit was SVN r12597.
seed value have something set to true. Allow selection of the listen
type to thread if (and only if) the process is the HNP...
This commit was SVN r12105.
__DARWIN_ALIGN_POWER define from the last release of the OS X compiler
toolchain. The bug in net/if.h, however, is still there. So look
for the hints that we're on a 64 bit Apple PowerPC instead.
* If we don't find a buffer size that works by 10MB, we're never
going to. So add some code to limit the buffer size we'll try
so that we don't fall into an infinite loop
* Detect errors in opal_ifcount in the oob init code
Refs trac:420
This commit was SVN r11825.
The following Trac tickets were found above:
Ticket 420 --> https://svn.open-mpi.org/trac/ompi/ticket/420
Each 's' partition has its own TCP network. It's fine to use this network for jobs that fit inside the partition, but the TCP OOB errors when trying to connect across two partitions, because there are two disjoint networks. Each node also has another TCP network connecting ALL nodes together.
So the solution is to actually try all the available TCP interfaces on a node, instead of erroring when the first one fails.
Also, the default TCP connect() timeout is way too long (5 minutes) - use our own timeout mechanism, with the timeout value expressed as an MCA parameter.
This commit was SVN r11718.
- use the OPAL functions for PATH and environment variables
- make all headers C++ friendly
- no unamed structures
- no implicit cast.
Plus a full implementation for the orte_wait functions.
This commit was SVN r11347.
Clean up the remainder of the size_t references in the runtime itself. Convert to orte_std_cntr_t wherever it makes sense (only avoid those places where the actual memory size is referenced).
Remove the obsolete oob barrier function (we actually obsoleted it a long time ago - just never bothered to clean it up).
I have done my best to go through all the components and catch everything, even if I couldn't test compile them since I wasn't on that type of system. Still, I cannot guarantee that problems won't show up when you test this on specific systems. Usually, these will just show as "warning: comparison between signed and unsigned" notes which are easily fixed (just change a size_t to orte_std_cntr_t).
In some places, people didn't use size_t, but instead used some other variant (e.g., I found several places with uint32_t). I tried to catch all of them, but...
Once we get all the instances caught and fixed, this should once and for all resolve many of the heterogeneity problems.
This commit was SVN r11204.
r10841, so revert it (and it's fixes) out. Will bring back once cleaned up from
the code used in the tbird experiment
This commit was SVN r10991.
The following SVN revision numbers were found above:
r10841 --> open-mpi/ompi@dfa1221c3b
than $(LN_S). This causes problems with with Windows and probably
elsewhere (re: #200). So use a slightly different trick to get the
right header selected for the MEMCPY and TIMER components.
* Using the same trick used to solve the AC_CONFIG_LINKS problem,
stop using a separate header file for direct calling in the
PML and MTL. This lets me remove some icky code in ompi_mca.m4
that was more fragile than I really liked.
This commit was SVN r10841.
Since Jeff and I are going to a branch for T-bird, we have restored the trunk to its prior state to avoid any possibility of disturbing it.
This commit was SVN r10774.
Please report any abnormal behavior during launch, though, as we would like to understand what (if any) impact is seen. I couldn't see any on small jobs (the modulo functions render this number down pretty low).
This commit was SVN r10763.
- 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.
intended to include the OMPI_DEBUG_ZERO call).
These debugging statements should not have affected correcteness
because the value of 78 will be overridden in the read() and the
assert()/abort() stuff will only be triggered on an error which should
never happen (i.e., the error should have been handled by the prior if
conditional). But still, thise code should not be there.
This commit was SVN r8649.
The following SVN revision numbers were found above:
r8643 --> open-mpi/ompi@a6b869ed68
with the mutex locked and as this function will call oob_send which will call the lookup again
... we will deadlock as the mutex is already lock. The solution is to release the mutex before
going into the subscription. Then of course the logic to remote the item when something went
wrong with the subscrition is a little bit more complex.
This commit was SVN r7429.
Here's the huge registry check-in you've all been waiting for with baited breath. The revised version sends a single message to all processes at the various stage gates, thus making the startup much more scalable. I could provide you with all the tawdry details, but won't for now - you are welcome to ask, though, and I'll merrily bore your ears to tears.
In addition, the commit contains the following:
1. set the ignore properties on ompi/debuggers and orte/mca/pls/poe
2. Added simplified subscribe and put functions to the registry's API. I have also converted all of the ompi functions that registered subscriptions to the new API, and caught their associated put's as well.
In a follow-on commit, I'll be adding support for George's hetero arch registry subscription (wanted to get this one in first).
This commit was SVN r7118.
This required a little fiddling with a number of areas. Biggest problem was that it uncovered a potential for an infinite loop to be created in the registry. If a callback function modified the registry, the registry checked the triggers to see if anything had fired. Well, if the original callback was due to a trigger firing, that condition hadn't changed - so the trigger fired again....which caused the callback to be called, which modified the registry, which checked the triggers, etc. etc.
Triggers are now checked and then "flagged" as being "in process" so that the registry will NOT recheck that trigger until all callbacks have been processed. Tried doing this with subscriptions as well, but that caused a problem - when we release processes from a stagegate, they (at the moment) immediately place data on the registry that should cause a subscription to fire. Unfortunately, the system will just hang if that subscription doesn't get processed. So, I have left the subscription system alone - any callback function that modifies the registry in a fashion that will fire a subscription will indeed fire that subscription. We'll have to see if this causes problems - it shouldn't, but a careless user could lock things up if the callback generates a callback to itself.
Also fixed the code that placed a process' RML contact info on the registry to eliminate the leading '/' from the string.
This commit was SVN r6684.
1. Modify the registry to eliminate redundant data copying for startup messages.
2. Revise the subscription/trigger system to avoid redundant storage of triggers and subscriptions. This dramatically reduces the search time when a registry action occurs - to illustrate the point, there are now only a handful of triggers on the system for each job. Before, there were a handful of triggers for each PROCESS in the job, all of which had to be checked every time something happened on the registry. This is much, much faster now.
3. Update all subscriptions to the new format. There are now "named" subscriptions - this allows you to "name" a subscription that all the processes will be using. The first one to hit the registry actually defines the subscription. From then on, any subsequent "subscribes" to the same name just cause that process to "attach" to the existing subscription. This keeps the number of subscriptions being tracked by the registry to a minimum, while ensuring that each process still gets notified.
4. Do the same for triggers.
Also fixed a duplicate subscription problem that was causing people to receive data equal to the number of processes times the data they should have received from a trigger/subscription. Sorry about that... :-( ...but it's all better now!
Uncovered a situation where the modex data seems to be getting entered on the registry a second time - the latter time coming after the compound command has been "fired", thereby causing all the subscriptions to fire. Asked Tim and Jeff to look into this.
Second phase of the changes will involve modifying the xcast system so that the same message gets sent to all processes. This will further reduce the message traffic, and - once we have a true "broadcast" version of xcast - really speed things up and improve scalability.
This commit was SVN r6542.
* rename ompi_malloc to opal_malloc
* rename ompi_numtostr to opal_numtostr
* start of rename of ompi_environ to opal_environ
This commit was SVN r6332.
