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openmpi/ompi/mca/coll/ml/coll_ml_allocation.c
2015-09-11 13:20:44 +09:00

222 строки
7.2 KiB
C

/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
/*
* Copyright (c) 2009-2012 Oak Ridge National Laboratory. All rights reserved.
* Copyright (c) 2009-2012 Mellanox Technologies. All rights reserved.
* Copyright (c) 2015 Research Organization for Information Science
* and Technology (RIST). All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "ompi_config.h"
#include <stdlib.h>
#include "coll_ml.h"
#include "coll_ml_inlines.h"
#include "coll_ml_allocation.h"
mca_bcol_base_memory_block_desc_t *mca_coll_ml_allocate_block(struct mca_coll_ml_component_t *ml_component,
mca_bcol_base_memory_block_desc_t *ml_memblock)
{
mca_bcol_base_memory_block_desc_t *ret = NULL;
mca_bcol_base_memory_block_desc_t *memory_block = NULL;
mca_coll_ml_lmngr_t *memory_manager = NULL;
if (ml_memblock) {
ML_ERROR(("Memory already allocated - expecting NULL pointer"));
return ret;
}
memory_block = (mca_bcol_base_memory_block_desc_t*) calloc(1, sizeof(mca_bcol_base_memory_block_desc_t));
if (NULL == memory_block){
ML_ERROR(("Couldn't allocate memory for ml_memblock"));
return ret;
}
memory_manager = &ml_component->memory_manager;
memory_block->block = mca_coll_ml_lmngr_alloc(memory_manager);
memory_block->size_block = memory_manager->list_block_size;
if (!memory_block->block){
ML_VERBOSE(1, ("lmngr failed."));
ret = NULL;
goto exit_ERROR;
}
return memory_block;
exit_ERROR:
if (memory_block){
free(memory_block);
return ret;
}
return ret;
}
void mca_coll_ml_free_block (mca_bcol_base_memory_block_desc_t *ml_memblock)
{
if (!ml_memblock)
return;
if (ml_memblock->buffer_descs){
free(ml_memblock->buffer_descs);
}
mca_coll_ml_lmngr_free(ml_memblock->block);
free(ml_memblock->bank_release_counters);
free(ml_memblock->ready_for_memsync);
free(ml_memblock->bank_is_busy);
free(ml_memblock);
}
int mca_coll_ml_initialize_block(mca_bcol_base_memory_block_desc_t *ml_memblock,
uint32_t num_buffers,
uint32_t num_banks,
uint32_t buffer_size,
int32_t data_offset,
opal_list_t *bcols_in_use)
{
int ret = OMPI_SUCCESS;
uint32_t bank_loop, buff_loop;
uint64_t addr_offset = 0;
mca_bcol_base_payload_buffer_desc_t *pbuff_descs = NULL,*pbuff_desc = NULL;
if (0 == num_banks || 0 == num_buffers || 0 == buffer_size) {
return OMPI_ERR_BAD_PARAM;
}
if (NULL == ml_memblock){
ML_ERROR(("Memory block not initialized"));
ret = OMPI_ERROR;
goto exit_ERROR;
}
if (ml_memblock->size_block < (num_buffers * num_banks * buffer_size) ){
ML_ERROR(("Not enough memory for all buffers and banks in the memory block"));
ret = OMPI_ERROR;
goto exit_ERROR;
}
pbuff_descs = (mca_bcol_base_payload_buffer_desc_t*) malloc(sizeof(mca_bcol_base_payload_buffer_desc_t)
* num_banks * num_buffers);
if (NULL == pbuff_descs) {
return OMPI_ERR_OUT_OF_RESOURCE;
}
for(bank_loop = 0; bank_loop < num_banks; bank_loop++)
for(buff_loop = 0; buff_loop < num_buffers; buff_loop++){
pbuff_desc = &pbuff_descs[bank_loop*num_buffers + buff_loop];
pbuff_desc->base_data_addr = (void *)
((char *)ml_memblock->block->base_addr + addr_offset);
pbuff_desc->data_addr = (void *)
((char *)pbuff_desc->base_data_addr + (size_t)data_offset);
addr_offset+=buffer_size;
pbuff_desc->buffer_index = BUFFER_INDEX(bank_loop,num_buffers,buff_loop);
pbuff_desc->bank_index=bank_loop;
pbuff_desc->generation_number=0;
}
/* Initialize ml memory block */
/* gvm FIX:This counter when zero indicates that the bank is ready for
* recycle. This is initialized to number of bcol components as each bcol is responsible for
* releasing the buffers of a bank. This initialization will have
* faulty behavior, example in case of multiple interfaces, when more than
* one bcol module of the component type is in use.
*/
ml_memblock->bank_release_counters = (uint32_t *) calloc(num_banks, sizeof(uint32_t));
if (NULL == ml_memblock->bank_release_counters) {
ret = OMPI_ERR_OUT_OF_RESOURCE;
goto exit_ERROR;
}
ml_memblock->ready_for_memsync = (bool *) calloc(num_banks, sizeof(bool));
if (NULL == ml_memblock->ready_for_memsync) {
ret = OMPI_ERR_OUT_OF_RESOURCE;
goto exit_ERROR;
}
ml_memblock->bank_is_busy = (bool *) calloc(num_banks, sizeof(bool));
if (NULL == ml_memblock->bank_is_busy) {
ret = OMPI_ERR_OUT_OF_RESOURCE;
goto exit_ERROR;
}
/* Set index for first bank to sync */
ml_memblock->memsync_counter = 0;
/* use first bank and first buffer */
ml_memblock->next_free_buffer = 0;
ml_memblock->block_addr_offset = addr_offset;
ml_memblock->num_buffers_per_bank = num_buffers;
ml_memblock->num_banks = num_banks;
ml_memblock->size_buffer = buffer_size;
ml_memblock->buffer_descs = pbuff_descs;
return ret;
exit_ERROR:
/* Free all buffer descriptors */
if (pbuff_descs){
free(pbuff_descs);
}
return ret;
}
mca_bcol_base_payload_buffer_desc_t *mca_coll_ml_alloc_buffer (mca_coll_ml_module_t *module)
{
uint64_t bindex;
uint32_t bank, buffer, num_buffers;
mca_bcol_base_memory_block_desc_t *ml_memblock = module->payload_block;
mca_bcol_base_payload_buffer_desc_t *pbuff_descs = NULL,
*ml_membuffer = NULL;
/* Return a buffer */
num_buffers = ml_memblock->num_buffers_per_bank;
pbuff_descs = ml_memblock->buffer_descs;
bindex = ml_memblock->next_free_buffer;
buffer = bindex % num_buffers;
bank = bindex/num_buffers;
ML_VERBOSE(10, ("ML allocator: allocating buffer index %d, bank index %d", buffer, bank));
/* First buffer in bank, use next bank */
if (0 == buffer) {
if(!ml_memblock->bank_is_busy[bank]) {
/* the bank is free, mark it busy */
ml_memblock->bank_is_busy[bank] = true;
ML_VERBOSE(10, ("ML allocator: reset bank %d to value %d", bank,
ml_memblock->bank_release_counters[bank]));
} else {
/* the bank is busy, return NULL and upper layer will handle it */
ML_VERBOSE(10, ("No free payload buffers are available for use."
" Next memory bank is still used by one of bcols"));
return NULL;
}
}
assert(true == ml_memblock->bank_is_busy[bank]);
ml_membuffer = &pbuff_descs[bindex];
ML_VERBOSE(10, ("ML allocator: ml buffer index %d", bindex));
/* Compute next free buffer */
buffer = (buffer == num_buffers - 1) ? 0 : buffer + 1;
if (0 == buffer) {
bank = (bank == ml_memblock->num_banks - 1) ? 0 : bank + 1;
}
ml_memblock->next_free_buffer = BUFFER_INDEX(bank,num_buffers,buffer);
return ml_membuffer;
}