Contiguous Pages improves performance by allocating user memory regions over physical contiguous pages. It enables a user application to ask low level drivers to allocate contiguous memory for it as part of ibv_reg_mr.
|
Environmental Variables |
Value |
|
MLX_QP_ALLOC_TYPE |
CONTIG, PREFER_CONTIG |
|
MLX_CQ_ALLOC_TYPE |
CONTIG, PREFER_CONTIG |
|
MLX_MR_MAX_LOG2_CONTIG_BSIZE |
_MAX_LOG2_CONTIG_BLOCK_SIZE (23) |
|
MLX_MR_MIN_LOG2_CONTIG_BSIZE |
_MIN_LOG2_CONTIG_BLOCK_SIZE (12) |
|
HUGE_CQ |
|
|
qp_huge_key |
ibv_exp_reg_mr
IBV_EXP_ACCESS_ALLOCATE_MR
ibv_exp_rereg_mr
IBV_EXP_ACCESS_ALLOCATE_MR
Contiguous memory in RDMA-Core is achieved using huge pages.