556 строки
21 KiB
C
556 строки
21 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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/**
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* @file
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*
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* BML Management Layer (BML)
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*
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*/
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#ifndef MCA_BML_H
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#define MCA_BML_H
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#include "mca/mca.h"
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#include "mca/btl/btl.h"
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#include "mca/bml/base/bml_base_btl.h"
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#include "mca/bml/base/bml_base_endpoint.h"
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#include "include/types.h"
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#include "class/ompi_free_list.h"
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#include "mca/pml/pml.h"
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/*
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* BML types
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*/
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struct ompi_proc_t;
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struct mca_bml_base_module_t;
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struct mca_bml_base_endpoint_t;
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struct mca_mpool_base_resources_t;
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/*
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* Cached set of information for each btl
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*/
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struct mca_bml_base_btl_t {
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int btl_index; /**< index in endpoint array */
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int btl_flags; /**< support for put/get? */
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double btl_weight; /**< BTL weight for scheduling */
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size_t btl_eager_limit; /**< BTL eager limit */
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size_t btl_min_send_size; /**< BTL min send size */
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size_t btl_max_send_size; /**< BTL max send size */
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size_t btl_min_rdma_size; /**< BTL min rdma size */
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size_t btl_max_rdma_size; /**< BTL max rdma size */
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struct mca_btl_base_module_t *btl; /**< BTL module */
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struct mca_btl_base_endpoint_t* btl_endpoint; /**< BTL addressing info */
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struct mca_btl_base_descriptor_t* btl_cache;
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/* BTL function table */
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mca_btl_base_module_alloc_fn_t btl_alloc;
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mca_btl_base_module_free_fn_t btl_free;
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mca_btl_base_module_send_fn_t btl_send;
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mca_btl_base_module_prepare_fn_t btl_prepare_src;
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mca_btl_base_module_prepare_fn_t btl_prepare_dst;
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mca_btl_base_module_put_fn_t btl_put;
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mca_btl_base_module_get_fn_t btl_get;
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mca_btl_base_component_progress_fn_t btl_progress;
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mca_mpool_base_module_t* btl_mpool;
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};
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typedef struct mca_bml_base_btl_t mca_bml_base_btl_t;
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/**
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* A dynamically growable array of mca_bml_base_btl_t instances.
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* Maintains an index into the array that is used for round-robin
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* scheduling across contents.
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*/
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struct mca_bml_base_btl_array_t {
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opal_object_t super;
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size_t arr_size; /**< number available */
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size_t arr_reserve; /**< size of allocated btl_proc array */
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size_t arr_index; /**< last used index*/
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mca_bml_base_btl_t* bml_btls; /**< array of bml btl's */
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};
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typedef struct mca_bml_base_btl_array_t mca_bml_base_btl_array_t;
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OMPI_DECLSPEC OBJ_CLASS_DECLARATION(mca_bml_base_btl_array_t);
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/**
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* If required, reallocate (grow) the array to the indicate size.
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*
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* @param array (IN)
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* @param size (IN)
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*/
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int mca_bml_base_btl_array_reserve(mca_bml_base_btl_array_t*, size_t);
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static inline size_t mca_bml_base_btl_array_get_size(mca_bml_base_btl_array_t* array)
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{
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return array->arr_size;
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}
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/**
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* Grow the array if required, and set the size.
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*
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* @param array (IN)
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* @param size (IN)
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*/
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static inline void mca_bml_base_btl_array_set_size(mca_bml_base_btl_array_t* array, size_t size)
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{
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if(array->arr_size > array->arr_reserve)
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mca_bml_base_btl_array_reserve(array, size);
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array->arr_size = size;
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}
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/**
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* Grow the array size by one and return the item at that index.
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*
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* @param array (IN)
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*/
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static inline mca_bml_base_btl_t* mca_bml_base_btl_array_insert(mca_bml_base_btl_array_t* array)
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{
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#if OMPI_ENABLE_DEBUG
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if(array->arr_size >= array->arr_reserve) {
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opal_output(0, "mca_bml_base_btl_array_insert: invalid array index %d >= %d",
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array->arr_size, array->arr_reserve);
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return 0;
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}
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#endif
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return &array->bml_btls[array->arr_size++];
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}
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/**
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* Return an array item at the specified index.
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*
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* @param array (IN)
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* @param index (IN)
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*/
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static inline mca_bml_base_btl_t* mca_bml_base_btl_array_get_index(mca_bml_base_btl_array_t* array, size_t index)
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{
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#if OMPI_ENABLE_DEBUG
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if(index >= array->arr_size) {
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opal_output(0, "mca_bml_base_btl_array_get_index: invalid array index %d >= %d",
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index, array->arr_size);
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return 0;
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}
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#endif
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return &array->bml_btls[index];
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}
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/**
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* Return the next LRU index in the array.
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*
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* @param array (IN)
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* @param index (IN)
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*/
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static inline mca_bml_base_btl_t* mca_bml_base_btl_array_get_next(mca_bml_base_btl_array_t* array)
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{
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mca_bml_base_btl_t* bml_btl;
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#if OMPI_ENABLE_DEBUG
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if(array->arr_size == 0) {
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opal_output(0, "mca_bml_base_btl_array_get_next: invalid array size");
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return 0;
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}
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#endif
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bml_btl = &array->bml_btls[array->arr_index++];
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if(array->arr_index == array->arr_size) {
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array->arr_index = 0;
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}
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return bml_btl;
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}
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/**
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* Locate an element in the array
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*
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* @param array (IN)
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* @param index (IN)
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*/
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static inline mca_bml_base_btl_t* mca_bml_base_btl_array_find(
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mca_bml_base_btl_array_t* array, struct mca_btl_base_module_t* btl)
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{
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size_t i=0;
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for(i=0; i<array->arr_size; i++) {
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if(array->bml_btls[i].btl == btl) {
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return &array->bml_btls[i];
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}
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}
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return NULL;
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}
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/**
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* Structure associated w/ ompi_proc_t that contains the set
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* of BTLs used to reach a destinationation
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*/
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struct mca_bml_base_endpoint_t {
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mca_pml_proc_t super;
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struct ompi_proc_t *btl_proc; /**< back-pointer to ompi_proc_t */
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opal_mutex_t btl_lock; /**< lock to protect against concurrent access */
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int btl_flags; /**< prefered method of accessing this peer */
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size_t btl_rdma_offset; /**< max of min rdma size for available rmda btls */
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size_t btl_max_send_size; /**< min of max send size for available send btls */
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mca_bml_base_btl_array_t btl_eager; /**< array of btls to use for first fragments */
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mca_bml_base_btl_array_t btl_send; /**< array of btls to use for remaining fragments */
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mca_bml_base_btl_array_t btl_rdma; /**< array of btls that support (prefer) rdma */
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};
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typedef struct mca_bml_base_endpoint_t mca_bml_base_endpoint_t;
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OMPI_COMP_EXPORT OBJ_CLASS_DECLARATION(mca_bml_base_endpoint_t);
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static inline void mca_bml_base_alloc(mca_bml_base_btl_t* bml_btl, mca_btl_base_descriptor_t** des, size_t size) {
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*des = bml_btl->btl_alloc(bml_btl->btl, size);
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if((*des) != NULL) {
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(*des)->des_context = (void*) bml_btl;
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}
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}
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static inline void mca_bml_base_free(mca_bml_base_btl_t* bml_btl, mca_btl_base_descriptor_t* des) {
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bml_btl->btl_free( bml_btl->btl, des );
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/* The previous function is supposed to release the des object
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* so we should not touch it anymore.
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*/
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/*des->des_context = NULL;*/
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}
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static inline int mca_bml_base_send(mca_bml_base_btl_t* bml_btl, mca_btl_base_descriptor_t* des, mca_btl_base_tag_t tag) {
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des->des_context = (void*) bml_btl;
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return bml_btl->btl_send(
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bml_btl->btl,
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bml_btl->btl_endpoint,
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des,
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tag);
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}
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static inline int mca_bml_base_put(mca_bml_base_btl_t* bml_btl, mca_btl_base_descriptor_t* des) {
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des->des_context = (void*) bml_btl;
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return bml_btl->btl_put(
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bml_btl->btl,
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bml_btl->btl_endpoint,
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des);
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}
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static inline int mca_bml_base_get(mca_bml_base_btl_t* bml_btl, mca_btl_base_descriptor_t* des) {
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des->des_context = (void*) bml_btl;
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return bml_btl->btl_get(
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bml_btl->btl,
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bml_btl->btl_endpoint,
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des);
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}
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static inline void mca_bml_base_prepare_src(mca_bml_base_btl_t* bml_btl,
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mca_mpool_base_registration_t* reg,
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struct ompi_convertor_t* conv,
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size_t reserve,
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size_t *size,
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mca_btl_base_descriptor_t** des) {
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*des = bml_btl->btl_prepare_src(
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bml_btl->btl,
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bml_btl->btl_endpoint,
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reg,
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conv,
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reserve,
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size
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);
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if((*des) != NULL) {
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(*des)->des_context = (void*) bml_btl;
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}
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}
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static inline void mca_bml_base_prepare_dst(mca_bml_base_btl_t* bml_btl,
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mca_mpool_base_registration_t* reg,
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struct ompi_convertor_t* conv,
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size_t reserve,
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size_t *size,
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mca_btl_base_descriptor_t** des) {
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*des = bml_btl->btl_prepare_dst(
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bml_btl->btl,
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bml_btl->btl_endpoint,
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reg,
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conv,
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reserve,
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size
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);
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if((*des) != NULL) {
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(*des)->des_context = (void*) bml_btl;
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}
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}
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#if OMPI_HAVE_THREAD_SUPPORT
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#define MCA_BML_BASE_BTL_DES_ALLOC(bml_btl, des, alloc_size, seg_size) \
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do { \
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if(NULL != (des = bml_btl->btl_cache)) { \
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/* atomically acquire the cached descriptor */ \
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if(opal_atomic_cmpset_ptr(&bml_btl->btl_cache, des, NULL) == 0) { \
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bml_btl->btl_cache = NULL; \
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} else { \
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des = bml_btl->btl_alloc(bml_btl->btl, alloc_size); \
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} \
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} else { \
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des = bml_btl->btl_alloc(bml_btl->btl, alloc_size); \
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} \
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des->des_src->seg_len = seg_size; \
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des->des_context = (void*) bml_btl; \
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} while(0)
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#else
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#define MCA_BML_BASE_BTL_DES_ALLOC(bml_btl, descriptor, alloc_size, seg_size) \
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do { \
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if(NULL != (descriptor = bml_btl->btl_cache)) { \
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bml_btl->btl_cache = NULL; \
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} else { \
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descriptor = bml_btl->btl_alloc(bml_btl->btl, alloc_size); \
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} \
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descriptor->des_src->seg_len = seg_size; \
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descriptor->des_context = (void*) bml_btl; \
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} while(0)
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#endif
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/**
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* Return a descriptor
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*/
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#if OMPI_HAVE_THREAD_SUPPORT
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#define MCA_BML_BASE_BTL_DES_RETURN( bml_btl, descriptor ) \
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do { \
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if(NULL == bml_btl->btl_cache) { \
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if(opal_atomic_cmpset_ptr(&bml_btl->btl_cache,NULL,descriptor) == 0) { \
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bml_btl->btl_free(bml_btl->btl,descriptor); \
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} \
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} else { \
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bml_btl->btl_free(bml_btl->btl,descriptor); \
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} \
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} while(0)
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#else
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#define MCA_BML_BASE_BTL_DES_RETURN(bml_btl, descriptor) \
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do { \
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if(NULL == bml_btl->btl_cache) { \
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bml_btl->btl_cache = descriptor; \
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} else { \
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bml_btl->btl_free(bml_btl->btl,descriptor); \
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} \
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} while(0)
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#endif
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/*
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* BML component interface functions and datatype.
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*/
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/**
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* MCA->BML Initializes the BML component and creates specific BML
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* module(s).
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*
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* @param num_bmls (OUT) Returns the number of bml modules created, or 0
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* if the transport is not available.
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*
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* @param enable_progress_threads (IN) Whether this component is
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* allowed to run a hidden/progress thread or not.
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*
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* @param enable_mpi_threads (IN) Whether support for multiple MPI
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* threads is enabled or not (i.e., MPI_THREAD_MULTIPLE), which
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* indicates whether multiple threads may invoke this component
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* simultaneously or not.
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*
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* @return Array of pointers to BML modules, or NULL if the transport
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* is not available.
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*
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* During component initialization, the BML component should discover
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* the physical devices that are available for the given transport,
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* and create a BML module to represent each device. Any addressing
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* information required by peers to reach the device should be published
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* during this function via the mca_base_modex_send() interface.
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*
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*/
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typedef struct mca_bml_base_module_t* (*mca_bml_base_component_init_fn_t)(
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int* priority,
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bool enable_progress_threads,
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bool enable_mpi_threads
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);
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/**
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* MCA->BML Called to progress outstanding requests for
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* non-threaded polling environments.
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*
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* @param tstamp Current time.
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* @return OMPI_SUCCESS or error code on failure.
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*/
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typedef int (*mca_bml_base_module_progress_fn_t)(void);
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/**
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* BML component descriptor. Contains component version information
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* and component open/close/init functions.
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*/
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struct mca_bml_base_component_1_0_0_t {
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mca_base_component_t bml_version;
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mca_base_component_data_1_0_0_t bml_data;
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mca_bml_base_component_init_fn_t bml_init;
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};
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typedef struct mca_bml_base_component_1_0_0_t mca_bml_base_component_1_0_0_t;
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typedef struct mca_bml_base_component_1_0_0_t mca_bml_base_component_t;
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/*
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* BML module interface functions and datatype.
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*/
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/**
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* MCA->BML Clean up any resources held by BML module
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* before the module is unloaded.
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*
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* @param bml (IN) BML module.
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*
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* Prior to unloading a BML module, the MCA framework will call
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* the BML finalize method of the module. Any resources held by
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* the BML should be released and if required the memory corresponding
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* to the BML module freed.
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*
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*/
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typedef int (*mca_bml_base_module_finalize_fn_t)( void );
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/**
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* PML->BML notification of change in the process list.
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*
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* @param bml (IN) BML module
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* @param nprocs (IN) Number of processes
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* @param procs (IN) Set of processes
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* @param endpoint (OUT) Set of (optional) mca_bml_base_endpoint_t structures by BML.
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* @param reachable (OUT) Bitmask indicating set of peer processes that are reachable by this BML.
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* @return OMPI_SUCCESS or error status on failure.
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*
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* The mca_bml_base_module_add_procs_fn_t() is called by the PML to
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* determine the set of BMLs that should be used to reach each process.
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* Any addressing information exported by the peer via the mca_base_modex_send()
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* function should be available during this call via the corresponding
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* mca_base_modex_recv() function. The BML may utilize this information to
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* determine reachability of each peer process.
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*
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* For each process that is reachable by the BML, the bit corresponding to the index
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* into the proc array (nprocs) should be set in the reachable bitmask. The PML
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* provides the BML the option to return a pointer to a data structure defined
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* by the BML that is returned to the BML on subsequent calls to the BML data
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* transfer functions (e.g bml_send). This may be used by the BML to cache any addressing
|
|
* or connection information (e.g. TCP socket, IP queue pair).
|
|
*/
|
|
typedef int (*mca_bml_base_module_add_procs_fn_t)(
|
|
size_t nprocs,
|
|
struct ompi_proc_t** procs,
|
|
struct mca_bml_base_endpoint_t** endpoints,
|
|
struct ompi_bitmap_t* reachable
|
|
);
|
|
|
|
/**
|
|
* Notification of change to the process list.
|
|
*
|
|
* @param bml (IN) BML module
|
|
* @param nprocs (IN) Number of processes
|
|
* @param proc (IN) Set of processes
|
|
* @param peer (IN) Set of peer addressing information.
|
|
* @return Status indicating if cleanup was successful
|
|
*
|
|
* When the process list changes, the PML notifies the BML of the
|
|
* change, to provide the opportunity to cleanup or release any
|
|
* resources associated with the peer.
|
|
*/
|
|
typedef int (*mca_bml_base_module_del_procs_fn_t)(
|
|
size_t nprocs,
|
|
struct ompi_proc_t** procs
|
|
);
|
|
|
|
/**
|
|
* Callback function that is called asynchronously on receipt
|
|
* of data by the transport layer.
|
|
*/
|
|
|
|
typedef void (*mca_bml_base_module_recv_cb_fn_t)(
|
|
mca_btl_base_module_t* bml_btl,
|
|
mca_btl_base_tag_t tag,
|
|
mca_btl_base_descriptor_t* descriptor,
|
|
void* cbdata
|
|
);
|
|
|
|
|
|
/**
|
|
* Register a callback function that is called on receipt
|
|
* of a fragment.
|
|
*
|
|
* @param bml (IN) BML module
|
|
* @return Status indicating if cleanup was successful
|
|
*
|
|
* When the process list changes, the PML notifies the BML of the
|
|
* change, to provide the opportunity to cleanup or release any
|
|
* resources associated with the peer.
|
|
*/
|
|
typedef int (*mca_bml_base_module_register_fn_t)(
|
|
mca_btl_base_tag_t tag,
|
|
mca_bml_base_module_recv_cb_fn_t cbfunc,
|
|
void* cbdata
|
|
);
|
|
|
|
|
|
|
|
/**
|
|
* BML module interface functions and attributes.
|
|
*/
|
|
struct mca_bml_base_module_t {
|
|
/* BML common attributes */
|
|
mca_bml_base_component_t* bml_component; /**< pointer back to the BML component structure */
|
|
size_t bml_eager_limit; /**< maximum size of first fragment -- eager send */
|
|
size_t bml_min_send_size; /**< threshold below which the BML should not fragment */
|
|
size_t bml_max_send_size; /**< maximum send fragment size supported by the BML */
|
|
size_t bml_min_rdma_size; /**< threshold below which the BML should not fragment */
|
|
size_t bml_max_rdma_size; /**< maximum rdma fragment size supported by the BML */
|
|
|
|
/* BML function table */
|
|
mca_bml_base_module_add_procs_fn_t bml_add_procs;
|
|
mca_bml_base_module_del_procs_fn_t bml_del_procs;
|
|
mca_bml_base_module_register_fn_t bml_register;
|
|
mca_bml_base_module_finalize_fn_t bml_finalize;
|
|
|
|
mca_bml_base_module_progress_fn_t bml_progress;
|
|
|
|
};
|
|
typedef struct mca_bml_base_module_t mca_bml_base_module_t;
|
|
|
|
/*
|
|
* Macro for use in modules that are of type bml v1.0.0
|
|
*/
|
|
#define MCA_BML_BASE_VERSION_1_0_0 \
|
|
/* v1.0 is chained to MCA v1.0 */ \
|
|
MCA_BASE_VERSION_1_0_0, \
|
|
/* bml v1.0 */ \
|
|
"bml", 1, 0, 0
|
|
|
|
#endif /* OMPI_MCA_BML_H */
|