c31a5ad4b3
(1) As pointed out by Torsten after Jeff comment that there are 15 collectives yesterday.. nope.. I have 16 but
miss counted them in my ifdefs (I had two #11s). Replaces with enum...
(2) Added a readonly MCA param for how many backend algorithms are available per collective (used by benchmarker/STS)
This allowed me to remove the tuned query internal functions and replace them with ompi_coll_tuned_forced_max_algorithms[COLL].
(3) I was reading the user forced MCA params for the collectives on each comm create (module init) but I then put the
values into a global set of variables (like ompi_coll_tuned_reduce_forced_algorithm).
To fix this and make the code neater:
(a) The component looks up the MCA param indices on Open if dynamic_rules is set via the
ompi_coll_tuned_COLLECTIVE_intra_check_forced_init () call.
(b) Got rid of the ompi_coll_ompi_coll_tuned_COLLECTIVE_forced_algorithm/segmentsize/etc globals with a struct that
is now cached on the module data hung off the communicator. i.e. done right.
(c) On module init if dynamic rules enabled we call a general getvalues routine (in coll_tuned_forced.c) to get the
CURRENT values using the MCA param indices and then put them on the modules data segment.
A shorter version of getvalues exists for barrier which only needs the algorithm choice
This commit was SVN r9663.
72 строки
2.7 KiB
C
72 строки
2.7 KiB
C
/*
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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) 2004-2006 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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#ifndef MCA_COLL_TUNED_FORCED_H_HAS_BEEN_INCLUDED
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#define MCA_COLL_TUNED_FORCED_H_HAS_BEEN_INCLUDED
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#include "ompi_config.h"
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#if defined(c_plusplus) || defined(__cplusplus)
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extern "C" {
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#endif
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/* this structure is for storing the indexes to the forced algorithm mca params... */
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/* we get these at component query (so that registered values appear in ompi_infoi) */
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struct coll_tuned_force_algorithm_mca_param_indices_t {
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int algorithm_param_index; /* which algorithm you want to force */
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int segsize_param_index; /* segsize to use (if supported), 0 = no segmentation */
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int tree_fanout_param_index; /* tree fanout/in to use */
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int chain_fanout_param_index; /* K-chain fanout/in to use */
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};
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typedef struct coll_tuned_force_algorithm_mca_param_indices_t coll_tuned_force_algorithm_mca_param_indices_t;
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/* the following type is for storing actual value obtained from the MCA on each tuned module */
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/* via their mca param indices lookup in the component */
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/* this structure is stored once per collective type per communicator... */
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struct coll_tuned_force_algorithm_params_t {
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int algorithm; /* which algorithm you want to force */
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int segsize; /* segsize to use (if supported), 0 = no segmentation */
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int tree_fanout; /* tree fanout/in to use */
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int chain_fanout; /* K-chain fanout/in to use */
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};
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typedef struct coll_tuned_force_algorithm_params_t coll_tuned_force_algorithm_params_t;
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/* prototypes */
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int ompi_coll_tuned_forced_getvalues (coll_tuned_force_algorithm_mca_param_indices_t mca_params,
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coll_tuned_force_algorithm_params_t *forced_values);
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/* barrier has less options than any other collective so it gets its own special function */
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int ompi_coll_tuned_forced_getvalues_barrier (coll_tuned_force_algorithm_mca_param_indices_t mca_params,
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coll_tuned_force_algorithm_params_t *forced_values);
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#if defined(c_plusplus) || defined(__cplusplus)
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}
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#endif
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#endif /* MCA_COLL_TUNED_FORCED_H_HAS_BEEN_INCLUDED */
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