552c9ca5a0
WHAT: Open our low-level communication infrastructure by moving all necessary components (btl/rcache/allocator/mpool) down in OPAL All the components required for inter-process communications are currently deeply integrated in the OMPI layer. Several groups/institutions have express interest in having a more generic communication infrastructure, without all the OMPI layer dependencies. This communication layer should be made available at a different software level, available to all layers in the Open MPI software stack. As an example, our ORTE layer could replace the current OOB and instead use the BTL directly, gaining access to more reactive network interfaces than TCP. Similarly, external software libraries could take advantage of our highly optimized AM (active message) communication layer for their own purpose. UTK with support from Sandia, developped a version of Open MPI where the entire communication infrastucture has been moved down to OPAL (btl/rcache/allocator/mpool). Most of the moved components have been updated to match the new schema, with few exceptions (mainly BTLs where I have no way of compiling/testing them). Thus, the completion of this RFC is tied to being able to completing this move for all BTLs. For this we need help from the rest of the Open MPI community, especially those supporting some of the BTLs. A non-exhaustive list of BTLs that qualify here is: mx, portals4, scif, udapl, ugni, usnic. This commit was SVN r32317.
89 строки
3.1 KiB
C
89 строки
3.1 KiB
C
/**
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* Copyright (c) 2013 Mellanox Technologies, Inc.
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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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* Description of the Registration Cache framework
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*/
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#ifndef MCA_MEMHEAP_BUDDY_H
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#define MCA_MEMHEAP_BUDDY_H
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#include "oshmem_config.h"
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#include "opal/mca/mca.h"
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#include "opal/class/opal_list.h"
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#include "opal/threads/mutex.h"
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#include "oshmem/mca/memheap/memheap.h"
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#include "oshmem/mca/memheap/base/base.h"
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#include "oshmem/mca/spml/spml.h"
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#include "oshmem/util/oshmem_util.h"
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#include "opal/class/opal_hash_table.h"
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#include "opal/mca/btl/btl.h"
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#include <string.h>
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#include <sys/types.h>
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#include <math.h>
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#define BITS_PER_BYTE 8
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#define __BITOPS_WORDSIZE 64
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#define DEFAULT_HASHTABLE_SIZE 100
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#define BITOP_WORD(nr) ((nr) / bits_per_long())
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#define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
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#define BITS_TO_LONGS(nr) DIV_ROUND_UP(nr, BITS_PER_BYTE * sizeof(unsigned long))
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#define __BITOPS_WORDS(bits) (((bits)+__BITOPS_WORDSIZE-1)/__BITOPS_WORDSIZE)
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#define clear_bit(x,y) __clear_bit((x), (y))
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#define set_bit(x,y) __set_bit((x), (y))
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#define find_first_bit(addr, size) find_next_bit((addr), (size), 0)
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BEGIN_C_DECLS
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struct mca_memheap_buddy_heap_t {
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unsigned long **bits; /** Part of the buddy allocator */
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unsigned *num_free; /** Part of the buddy allocator */
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unsigned max_order; /** Log2 of Maximal heap size, part of the allocator */
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unsigned min_order; /** min alloc order */
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void* symmetric_heap; /** Symmetric Heap */
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opal_hash_table_t* symmetric_heap_hashtable; /** Pointer to the Symmetric heap used for moving on it */
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};
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typedef struct mca_memheap_buddy_heap_t mca_memheap_buddy_heap_t;
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/* Structure for managing shmem symmetric heap */
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struct mca_memheap_buddy_module_t {
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mca_memheap_base_module_t super;
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int priority; /** Module's Priority */
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mca_memheap_buddy_heap_t heap;
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mca_memheap_buddy_heap_t private_heap;
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opal_mutex_t lock; /** Part of the buddy allocator */
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};
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typedef struct mca_memheap_buddy_module_t mca_memheap_buddy_module_t;
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OSHMEM_DECLSPEC extern mca_memheap_buddy_module_t memheap_buddy;
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/*
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* Buddy interface.
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* Please pay attention to the new differences in the interface.
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*/
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OSHMEM_DECLSPEC extern int mca_memheap_buddy_module_init(memheap_context_t *);
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OSHMEM_DECLSPEC extern int mca_memheap_buddy_alloc(size_t, void**);
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OSHMEM_DECLSPEC extern int mca_memheap_buddy_realloc(size_t, void*, void **);
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OSHMEM_DECLSPEC extern int mca_memheap_buddy_align(size_t, size_t, void**);
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OSHMEM_DECLSPEC extern int mca_memheap_buddy_free(void*);
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OSHMEM_DECLSPEC extern int mca_memheap_buddy_finalize(void);
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/* private alloc/free functions */
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OSHMEM_DECLSPEC extern int mca_memheap_buddy_private_alloc(size_t, void**);
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OSHMEM_DECLSPEC extern int mca_memheap_buddy_private_free(void*);
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/**
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* static/global variables support. Consider making it a separate component
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*/
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END_C_DECLS
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#endif /* MCA_MEMHEAP_BUDDY_H */
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