Halloc Memory Allocator

Max_nsbs 8192: Default maximum number of Superblocks

SB_SET_SZ (MAX_NSBS/WORD_SZ): superblock SET size, each set32 superblcoks

Free_mem_g: Total memory freed on the device

Max_alloc_mem_g: Maximum memory that can be allocated

Total_mem_g: Total Memory

Memory used by the Cuda_mem_g:cuda allocator

Initialization

Memory pool not exceeding 3/4global memories

Define the size of the slab

The memory pool is divided into two parts, part halloc used, and some cuda used

Divides the portion of memory that Halloc can use into superblocks, returning the memory address of the Superblocks (Cudamalloc assigned)

Defining Superblock Counters

Superblocks:

Size ID of the Size_id:slab

Whether Is_head:slab is head

Chunk_id:slab Chunk ID

Chunk_sz:slab size of Chunk

void *ptr: Points to Suprblock-owned memory

Halloc Memory Allocator