320 строки
12 KiB
C
320 строки
12 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) 2004-2005 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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#ifndef MCA_COLL_HIERARCH_EXPORT_H
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#define MCA_COLL_HIERARCH_EXPORT_H
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#include "ompi_config.h"
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#include "mpi.h"
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#include "mca/mca.h"
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#include "mca/coll/coll.h"
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#include "request/request.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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/*
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* Globally exported variable
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*/
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extern const mca_coll_base_component_1_0_0_t mca_coll_hierarch_component;
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extern int mca_coll_hierarch_priority_param;
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extern int mca_coll_hierarch_verbose_param;
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extern int mca_coll_hierarch_use_rdma_param;
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extern int mca_coll_hierarch_ignore_sm_param;
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extern int mca_coll_hierarch_symmetric_param;
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#define HIER_DEFAULT_NUM_LLEAD 5
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/*
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* Data structure for attaching data to the communicator
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*/
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/* Clarifying some terminology:
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* comm: the input communicator, consisting of several lower level communicators.
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* lcomm: low level communicator, often refered to as subcommunicator
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* lleader: local leader, a dedicated process of each low level communicator
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ATTENTION: an lleader might be the 'head' of a low level
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communicator of size one!
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* llcomm: local leader communicator, grouping all local leaders of a comm.
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*/
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struct mca_coll_base_comm_t {
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struct ompi_communicator_t *hier_comm; /* link back to the attached comm */
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struct ompi_communicator_t *hier_lcomm; /* low level communicator */
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ompi_pointer_array_t hier_llead; /* local leader communicator structure */
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int hier_num_lleaders; /* number of local leaders */
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int hier_level; /* level in the hierarchy. For debugging*/
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int hier_num_reqs; /* num. of requests */
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ompi_request_t **hier_reqs; /* list of requests */
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int hier_num_colorarr; /* size of the colorarr array */
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int *hier_llr; /* color array compacted (1 entry per color).
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Array of size hier_num_lleaders */
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int *hier_max_offset; /* Number of processes for each color.
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Array of size hier_num_lleaders */
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int *hier_colorarr; /* array containing the color of all procs */
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};
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struct mca_coll_hierarch_llead_t {
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struct ompi_communicator_t *llcomm; /* local leader communicator */
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int *lleaders; /* list of local leaders, ranks in comm */
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int my_lleader; /* rank of my lleader in lcomm */
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int am_lleader; /* am I an lleader? */
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int offset; /* Offset used for this llcomm */
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};
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typedef struct mca_coll_hierarch_llead_t mca_coll_hierarch_llead_t;
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static inline int mca_coll_hierarch_count_lleaders ( int size, int *carr)
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{
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/*
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* Determine the number of local leaders. Please note, that any process
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* with color = MPI_UNDEFINED will be counted as the head of a group of its own.
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* Please note furthermore, that every process with color=MPI_UNDEFINED will be
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* stored in this array on its own...
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*/
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int cnt, i, j, found;
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int *llr=NULL;
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llr = (int *) malloc ( size * sizeof(int));
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if (NULL == llr ){
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return OMPI_ERR_OUT_OF_RESOURCE;
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}
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llr[0] = carr[0];
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for (cnt=1, i=1; i<size; i++ ) {
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if ( carr[i] == MPI_UNDEFINED ) {
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llr[cnt++] = carr[i];
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continue;
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}
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for ( found=0, j=0; j<cnt; j++ ) {
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if ( carr[i] == llr[j] ) {
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found = 1;
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break;
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}
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}
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if ( !found ) {
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llr[cnt++] = carr[i];
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}
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}
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free (llr);
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return cnt;
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}
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static inline int mca_coll_hierarch_get_offset ( int rank, int size, int *carr)
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{
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int offset, i, color = carr[rank];
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if ( color == MPI_UNDEFINED ) {
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/* always */
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return 1;
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}
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for ( offset=0, i=0; i<=rank; i++) {
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if ( carr[i] == color ) {
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offset++;
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}
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}
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return offset;
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}
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/* This function determine the parameters required in hierarchical
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* collective operations. It is called from the collective operations themselves.
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*
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* @param root (input): rank of the root process in comm
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* @param data (input): coll_base_comm structure of the hierarchical module. Contains
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* all relevant, precomputed data for this set of collectives.
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*
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* @param llroot (output): rank of the root process in llcomm, MPI_UNDEFINED for all
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* processes not being part of the local leader communicator.
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* @param lroot (output): rank of the local leader in the low level communicator,
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* or MPI_UNDEFINED if there is no low level communicator.
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* return value: llcomm (local leader communicator) or MPI_COMM_NULL for
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* all processes not being part of the local leader communicator.
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*/
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struct ompi_communicator_t* mca_coll_hierarch_get_llcomm (int rroot,
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struct mca_coll_base_comm_t *data,
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int* llroot,
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int* lleader);
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/* This function is supposed to set up all elements of the mca_coll_base_comm_t
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* structure, including:
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* data->hier_num_lleaders: determine number of local leaders in the comms
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* data->hier_llr: array of size hier_num_lleaders containing the colors
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* data->hier_max_offset: array containing the counter for each color how often
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* it appears in the colorarr array.
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*/
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int mca_coll_hierarch_get_llr ( struct mca_coll_base_comm_t *data );
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/* This function is supposed to set all elements of the llead structure based on the
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* offset and the rank of the process.
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*
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* @param rank(input): rank of the calling process in comm
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* @param data(input): coll_base_comm structure of the hierarchical module. Contains
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* all relevant, precomputed data for this set of collectives.
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* @param llead(output): ptr to the mca_coll_hierarch_llead_t element which should
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* be set
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* @param offset(input): offset which shall be used.
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*/
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int mca_coll_hierarch_get_all_lleaders ( int rank, struct mca_coll_base_comm_t *data,
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struct mca_coll_hierarch_llead_t *llead,
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int offset );
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/*
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* coll API functions
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*/
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int mca_coll_hierarch_init_query(bool allow_hierarch_user_threads,
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bool have_hidden_threads);
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const struct mca_coll_base_module_1_0_0_t *
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mca_coll_hierarch_comm_query(struct ompi_communicator_t *comm,
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int *priority, struct mca_coll_base_comm_t **data);
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int mca_coll_hierarch_comm_unquery(struct ompi_communicator_t *comm,
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struct mca_coll_base_comm_t *data);
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const struct mca_coll_base_module_1_0_0_t *
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mca_coll_hierarch_module_init(struct ompi_communicator_t *comm);
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int mca_coll_hierarch_module_finalize(struct ompi_communicator_t *comm);
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int mca_coll_hierarch_allgather_intra(void *sbuf, int scount,
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struct ompi_datatype_t *sdtype,
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void *rbuf, int rcount,
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struct ompi_datatype_t *rdtype,
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struct ompi_communicator_t *comm);
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int mca_coll_hierarch_allgatherv_intra(void *sbuf, int scount,
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struct ompi_datatype_t *sdtype,
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void * rbuf, int *rcounts,
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int *disps,
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struct ompi_datatype_t *rdtype,
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struct ompi_communicator_t *comm);
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int mca_coll_hierarch_allreduce_intra(void *sbuf, void *rbuf, int count,
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struct ompi_datatype_t *dtype,
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struct ompi_op_t *op,
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struct ompi_communicator_t *comm);
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int mca_coll_hierarch_alltoall_intra(void *sbuf, int scount,
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struct ompi_datatype_t *sdtype,
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void* rbuf, int rcount,
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struct ompi_datatype_t *rdtype,
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struct ompi_communicator_t *comm);
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int mca_coll_hierarch_alltoallv_intra(void *sbuf, int *scounts,
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int *sdisps,
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struct ompi_datatype_t *sdtype,
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void *rbuf, int *rcounts,
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int *rdisps,
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struct ompi_datatype_t *rdtype,
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struct ompi_communicator_t *comm);
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int mca_coll_hierarch_alltoallw_intra(void *sbuf, int *scounts,
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int *sdisps,
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struct ompi_datatype_t **sdtypes,
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void *rbuf, int *rcounts,
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int *rdisps,
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struct ompi_datatype_t **rdtypes,
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struct ompi_communicator_t *comm);
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int mca_coll_hierarch_barrier_intra(struct ompi_communicator_t *comm);
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int mca_coll_hierarch_bcast_intra(void *buff, int count,
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struct ompi_datatype_t *datatype,
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int root,
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struct ompi_communicator_t *comm);
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int mca_coll_hierarch_exscan_intra(void *sbuf, void *rbuf, int count,
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struct ompi_datatype_t *dtype,
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struct ompi_op_t *op,
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struct ompi_communicator_t *comm);
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int mca_coll_hierarch_gather_intra(void *sbuf, int scount,
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struct ompi_datatype_t *sdtype,
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void *rbuf, int rcount,
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struct ompi_datatype_t *rdtype,
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int root,
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struct ompi_communicator_t *comm);
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int mca_coll_hierarch_gatherv_intra(void *sbuf, int scount,
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struct ompi_datatype_t *sdtype,
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void *rbuf, int *rcounts, int *disps,
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struct ompi_datatype_t *rdtype,
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int root,
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struct ompi_communicator_t *comm);
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int mca_coll_hierarch_reduce_intra(void *sbuf, void* rbuf, int count,
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struct ompi_datatype_t *dtype,
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struct ompi_op_t *op,
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int root,
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struct ompi_communicator_t *comm);
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int mca_coll_hierarch_reduce_scatter_intra(void *sbuf, void *rbuf,
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int *rcounts,
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struct ompi_datatype_t *dtype,
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struct ompi_op_t *op,
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struct ompi_communicator_t *comm);
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int mca_coll_hierarch_scan_intra(void *sbuf, void *rbuf, int count,
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struct ompi_datatype_t *dtype,
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struct ompi_op_t *op,
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struct ompi_communicator_t *comm);
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int mca_coll_hierarch_scatter_intra(void *sbuf, int scount,
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struct ompi_datatype_t *sdtype, void *rbuf,
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int rcount, struct ompi_datatype_t *rdtype,
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int root, struct ompi_communicator_t *comm);
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int mca_coll_hierarch_scatterv_intra(void *sbuf, int *scounts, int *disps,
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struct ompi_datatype_t *sdtype,
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void* rbuf, int rcount,
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struct ompi_datatype_t *rdtype, int root,
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struct ompi_communicator_t *comm);
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/*
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* These are trivial implementations of these routines used during comm_query/init,
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* since we cannot access any other collectives
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*/
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int mca_coll_hierarch_allgather_tmp(void *sbuf, int scount,
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struct ompi_datatype_t *sdtype,
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void *rbuf, int rcount,
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struct ompi_datatype_t *rdtype,
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struct ompi_communicator_t *comm);
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int mca_coll_hierarch_allreduce_tmp(void *sbuf, void *rbuf, int count,
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struct ompi_datatype_t *dtype,
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struct ompi_op_t *op,
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struct ompi_communicator_t *comm);
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int mca_coll_hierarch_bcast_tmp ( void *buf, int count, struct ompi_datatype_t *dtype,
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int root, struct ompi_communicator_t *comm);
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int mca_coll_hierarch_gather_tmp(void *sbuf, int scount,
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struct ompi_datatype_t *sdtype,
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void *rbuf, int rcount,
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struct ompi_datatype_t *rdtype,
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int root, struct ompi_communicator_t *comm);
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int mca_coll_hierarch_reduce_tmp(void *sbuf, void *rbuf, int count,
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struct ompi_datatype_t *dtype,
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struct ompi_op_t *op,
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int root, struct ompi_communicator_t *comm);
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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_HIERARCH_EXPORT_H */
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