/* -*- 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. * $COPYRIGHT$ * * Additional copyrights may follow * * $HEADER$ */ #include "ompi_config.h" #ifdef HAVE_STDLIB_H #include #endif /* HAVE_STDLIB_H */ #include "coll_ml.h" #include "coll_ml_inlines.h" #include "coll_ml_allocation.h" long memory_buffer_index; 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_ERROR(("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 (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); 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; }