2006-09-15 01:29:51 +04:00
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/*
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* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
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* University Research and Technology
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* Corporation. All rights reserved.
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* Copyright (c) 2004-2005 The University of Tennessee and The University
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* of Tennessee Research Foundation. All rights
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* reserved.
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* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
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* University of Stuttgart. All rights reserved.
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* Copyright (c) 2004-2005 The Regents of the University of California.
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* All rights reserved.
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* $COPYRIGHT$
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*
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* Additional copyrights may follow
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*
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* $HEADER$
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*/
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#include "orte_config.h"
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2008-02-28 04:57:57 +03:00
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#include "orte/constants.h"
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2006-09-15 01:29:51 +04:00
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2008-06-18 07:15:56 +04:00
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#if !ORTE_DISABLE_FULL_SUPPORT
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2006-09-15 01:29:51 +04:00
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#include "opal/mca/mca.h"
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#include "opal/mca/base/base.h"
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#include "opal/mca/base/mca_base_param.h"
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#include "opal/util/trace.h"
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Squeeeeeeze the launch message. This is the message sent to the daemons that provides all the data required for launching their local procs. In reorganizing the ODLS framework, I discovered that we were sending a significant amount of unnecessary and repeated data. This commit resolves this by:
1. taking advantage of the fact that we no longer create the launch message via a GPR trigger. In earlier times, we had the GPR create the launch message based on a subscription. In that mode of operation, we could not guarantee the order in which the data was stored in the message - hence, we had no choice but to parse the message in a loop that checked each value against a list of possible "keys" until the corresponding value was found.
Now, however, we construct the message "by hand", so we know precisely what data is in each location in the message. Thus, we no longer need to send the character string "keys" for each data value any more. This represents a rather large savings in the message size - to give you an example, we typically would use a 30-char "key" for a 2-byte data value. As you can see, the overhead can become very large.
2. sending node-specific data only once. Again, because we used to construct the message via subscriptions that were done on a per-proc basis, the data for each node (e.g., the daemon's name, whether or not the node was oversubscribed) would be included in the data for each proc. Thus, the node-specific data was repeated for every proc.
Now that we construct the message "by hand", there is no reason to do this any more. Instead, we can insert the data for a specific node only once, and then provide the per-proc data for that node. We therefore not only save all that extra data in the message, but we also only need to parse the per-node data once.
The savings become significant at scale. Here is a comparison between the revised trunk and the trunk prior to this commit (all data was taken on odin, using openib, 64 nodes, unity message routing, tested with application consisting of mpi_init/mpi_barrier/mpi_finalize, all execution times given in seconds, all launch message sizes in bytes):
Per-node scaling, taken at 1ppn:
#nodes original trunk revised trunk
time size time size
1 0.10 819 0.09 564
2 0.14 1070 0.14 677
3 0.15 1321 0.14 790
4 0.15 1572 0.15 903
8 0.17 2576 0.20 1355
16 0.25 4584 0.21 2259
32 0.28 8600 0.27 4067
64 0.50 16632 0.39 7683
Per-proc scaling, taken at 64 nodes
ppn original trunk revised trunk
time size time size
1 0.50 16669 0.40 7720
2 0.55 32733 0.54 11048
3 0.87 48797 0.81 14376
4 1.0 64861 0.85 17704
Condensing those numbers, it appears we gained:
per-node message size: 251 bytes/node -> 113 bytes/node
per-proc message size: 251 bytes/proc -> 52 bytes/proc
per-job message size: 568 bytes/job -> 399 bytes/job
(job-specific data such as jobid, override oversubscribe flag, total #procs in job, total slots allocated)
The fact that the two pre-commit trunk numbers are the same confirms the fact that each proc was containing the node data as well. It isn't quite the 10x message reduction I had hoped to get, but it is significant and gives much better scaling.
Note that the timing info was, as usual, pretty chaotic - the numbers cited here were typical across several runs taken after the initial one to avoid NFS file positioning influences.
Also note that this commit removes the orte_process_info.vpid_start field and the handful of places that passed that useless value. By definition, all jobs start at vpid=0, so all we were doing is passing "0" around. In fact, many places simply hardwired it to "0" anyway rather than deal with it.
This commit was SVN r16428.
2007-10-11 19:57:26 +04:00
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#include "opal/util/argv.h"
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2008-04-10 02:10:53 +04:00
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#include "opal/class/opal_value_array.h"
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2008-04-14 22:26:08 +04:00
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#include "opal/class/opal_pointer_array.h"
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2008-02-28 04:57:57 +03:00
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#include "opal/dss/dss.h"
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2008-04-10 02:10:53 +04:00
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2006-09-15 01:29:51 +04:00
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#include "orte/mca/errmgr/errmgr.h"
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2008-02-28 04:57:57 +03:00
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#include "orte/mca/plm/plm_types.h"
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#include "orte/util/name_fns.h"
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#include "orte/runtime/orte_globals.h"
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2008-06-09 18:53:58 +04:00
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#include "orte/util/show_help.h"
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2006-09-15 01:29:51 +04:00
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#include "orte/mca/odls/base/odls_private.h"
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2008-06-18 07:15:56 +04:00
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#endif
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#include "orte/mca/odls/base/base.h"
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2006-09-15 01:29:51 +04:00
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/*
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* The following file was created by configure. It contains extern
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* statements and the definition of an array of pointers to each
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* component's public mca_base_component_t struct.
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*/
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#include "orte/mca/odls/base/static-components.h"
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2008-06-18 07:15:56 +04:00
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#if ORTE_DISABLE_FULL_SUPPORT
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/* have to include a bogus function here so that
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* the build system sees at least one function
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* in the library
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*/
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int orte_odls_base_open(void)
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{
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return ORTE_SUCCESS;
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}
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#else
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2006-09-15 01:29:51 +04:00
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/*
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* Instantiate globals
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*/
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orte_odls_base_module_t orte_odls;
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2006-11-11 07:03:45 +03:00
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/* instance the child list object */
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static void orte_odls_child_constructor(orte_odls_child_t *ptr)
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{
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ptr->name = NULL;
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ptr->pid = 0;
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ptr->app_idx = -1;
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ptr->alive = false;
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2008-03-27 18:17:53 +03:00
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ptr->coll_recvd = false;
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2008-02-28 04:57:57 +03:00
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/* set the default state to "failed to start" so
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* we can correctly report should something
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* go wrong during launch
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*/
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ptr->state = ORTE_PROC_STATE_FAILED_TO_START;
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2007-04-24 22:54:45 +04:00
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ptr->exit_code = 0;
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2008-02-28 04:57:57 +03:00
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ptr->rml_uri = NULL;
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2008-03-18 12:39:07 +03:00
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ptr->slot_list = NULL;
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2008-12-10 23:40:47 +03:00
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ptr->waitpid_recvd = false;
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ptr->iof_complete = false;
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2006-11-11 07:03:45 +03:00
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}
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static void orte_odls_child_destructor(orte_odls_child_t *ptr)
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{
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if (NULL != ptr->name) free(ptr->name);
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2008-02-28 04:57:57 +03:00
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if (NULL != ptr->rml_uri) free(ptr->rml_uri);
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2008-03-18 12:39:07 +03:00
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if (NULL != ptr->slot_list) free(ptr->slot_list);
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2006-11-11 07:03:45 +03:00
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}
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OBJ_CLASS_INSTANCE(orte_odls_child_t,
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opal_list_item_t,
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orte_odls_child_constructor,
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orte_odls_child_destructor);
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2008-04-10 02:10:53 +04:00
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static void orte_odls_job_constructor(orte_odls_job_t *ptr)
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{
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ptr->jobid = ORTE_JOBID_INVALID;
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2009-01-27 22:13:56 +03:00
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ptr->launch_msg_processed = false;
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2008-04-30 23:49:53 +04:00
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ptr->apps = NULL;
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ptr->num_apps = 0;
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2008-08-13 21:47:24 +04:00
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ptr->controls = 0;
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Roll in the revamped IOF subsystem. Per the devel mailing list email, this is a complete rewrite of the iof framework designed to simplify the code for maintainability, and to support features we had planned to do, but were too difficult to implement in the old code. Specifically, the new code:
1. completely and cleanly separates responsibilities between the HNP, orted, and tool components.
2. removes all wireup messaging during launch and shutdown.
3. maintains flow control for stdin to avoid large-scale consumption of memory by orteds when large input files are forwarded. This is done using an xon/xoff protocol.
4. enables specification of stdin recipients on the mpirun cmd line. Allowed options include rank, "all", or "none". Default is rank 0.
5. creates a new MPI_Info key "ompi_stdin_target" that supports the above options for child jobs. Default is "none".
6. adds a new tool "orte-iof" that can connect to a running mpirun and display the output. Cmd line options allow selection of any combination of stdout, stderr, and stddiag. Default is stdout.
7. adds a new mpirun and orte-iof cmd line option "tag-output" that will tag each line of output with process name and stream ident. For example, "[1,0]<stdout>this is output"
This is not intended for the 1.3 release as it is a major change requiring considerable soak time.
This commit was SVN r19767.
2008-10-18 04:00:49 +04:00
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ptr->stdin_target = ORTE_VPID_INVALID;
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2008-04-30 23:49:53 +04:00
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ptr->total_slots_alloc = 0;
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ptr->num_procs = 0;
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ptr->num_local_procs = 0;
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ptr->pmap = NULL;
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2008-05-07 00:16:17 +04:00
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OBJ_CONSTRUCT(&ptr->collection_bucket, opal_buffer_t);
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OBJ_CONSTRUCT(&ptr->local_collection, opal_buffer_t);
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2008-05-02 16:00:08 +04:00
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ptr->collective_type = ORTE_GRPCOMM_COLL_NONE;
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2008-05-07 00:16:17 +04:00
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ptr->num_contributors = 0;
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2009-01-27 22:13:56 +03:00
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ptr->num_participating = -1;
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2008-05-07 00:16:17 +04:00
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ptr->num_collected = 0;
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2008-04-10 02:10:53 +04:00
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}
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static void orte_odls_job_destructor(orte_odls_job_t *ptr)
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{
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2008-04-30 23:49:53 +04:00
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orte_std_cntr_t i;
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if (NULL != ptr->apps) {
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for (i=0; i < ptr->num_apps; i++) {
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OBJ_RELEASE(ptr->apps[i]);
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}
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if (NULL != ptr->apps) {
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free(ptr->apps);
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}
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}
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if (NULL != ptr->pmap && NULL != ptr->pmap->bytes) {
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free(ptr->pmap->bytes);
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free(ptr->pmap);
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}
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2008-05-02 16:00:08 +04:00
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2008-05-07 00:16:17 +04:00
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OBJ_DESTRUCT(&ptr->collection_bucket);
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OBJ_DESTRUCT(&ptr->local_collection);
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2008-04-10 02:10:53 +04:00
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}
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OBJ_CLASS_INSTANCE(orte_odls_job_t,
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opal_list_item_t,
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orte_odls_job_constructor,
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orte_odls_job_destructor);
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2006-09-15 01:29:51 +04:00
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/*
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* Framework global variables
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*/
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orte_odls_base_t orte_odls_base;
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orte_odls_globals_t orte_odls_globals;
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/**
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* Function for finding and opening either all MCA components, or the one
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* that was specifically requested via a MCA parameter.
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*/
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int orte_odls_base_open(void)
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{
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2008-02-28 04:57:57 +03:00
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/* Debugging / verbose output. Always have stream open, with
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verbose set by the mca open system... */
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2008-06-09 18:53:58 +04:00
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orte_odls_globals.output = opal_output_open(NULL);
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2006-09-15 01:29:51 +04:00
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2007-08-18 07:05:45 +04:00
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mca_base_param_reg_int_name("odls", "base_sigkill_timeout",
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2006-11-17 05:58:46 +03:00
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"Time to wait for a process to die after issuing a kill signal to it",
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false, false, 1, &orte_odls_globals.timeout_before_sigkill);
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Bring in the code for routing xcast stage gate messages via the local orteds. This code is inactive unless you specifically request it via an mca param oob_xcast_mode (can be set to "linear" or "direct"). Direct mode is the old standard method where we send messages directly to each MPI process. Linear mode sends the xcast message via the orteds, with the HNP sending the message to each orted directly.
There is a binomial algorithm in the code (i.e., the HNP would send to a subset of the orteds, which then relay it on according to the typical log-2 algo), but that has a bug in it so the code won't let you select it even if you tried (and the mca param doesn't show, so you'd *really* have to try).
This also involved a slight change to the oob.xcast API, so propagated that as required.
Note: this has *only* been tested on rsh, SLURM, and Bproc environments (now that it has been transferred to the OMPI trunk, I'll need to re-test it [only done rsh so far]). It should work fine on any environment that uses the ORTE daemons - anywhere else, you are on your own... :-)
Also, correct a mistake where the orte_debug_flag was declared an int, but the mca param was set as a bool. Move the storage for that flag to the orte/runtime/params.c and orte/runtime/params.h files appropriately.
This commit was SVN r14475.
2007-04-23 22:41:04 +04:00
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2009-01-08 17:25:56 +03:00
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/* initialize ODLS globals */
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2007-10-10 19:02:10 +04:00
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OBJ_CONSTRUCT(&orte_odls_globals.mutex, opal_mutex_t);
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OBJ_CONSTRUCT(&orte_odls_globals.cond, opal_condition_t);
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2008-04-30 23:49:53 +04:00
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orte_odls_globals.dmap = NULL;
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2008-08-13 21:47:24 +04:00
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orte_odls_globals.debugger = NULL;
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orte_odls_globals.debugger_launched = false;
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2008-04-30 23:49:53 +04:00
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2006-09-15 01:29:51 +04:00
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/* Open up all available components */
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if (ORTE_SUCCESS !=
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mca_base_components_open("odls", orte_odls_globals.output,
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mca_odls_base_static_components,
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&orte_odls_base.available_components, true)) {
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return ORTE_ERROR;
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}
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2007-01-27 18:37:13 +03:00
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/* are there components available for use ? -
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* orte_odls_base.available_components is always initialized */
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if(0 < opal_list_get_size(&(orte_odls_base.available_components))) {
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orte_odls_base.components_available = true;
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} else {
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orte_odls_base.components_available = false;
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}
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2006-09-15 01:29:51 +04:00
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/* All done */
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return ORTE_SUCCESS;
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}
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2008-06-18 07:15:56 +04:00
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#endif
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