ibv_post_send。基于buffer中需传输的数据 (其addr+len) 生成wqe,wqe加入wq,然后ring doorbell通告硬件处理。该过程 app无需陷入内核态。 ibv_poll_cq。轮询cq状态,等待wqe完成。该过程 app无需陷入内核态。 对端: 初始化。 HCA接收到 send请求,根据va查表得iova,然后DMA。(该步骤 对端app无需感知,皆由HCA...
IP over IB (IPoIB) RDMA 的 iSCSI 扩展 (iSER) SCSI RDMA 协议 (SRP) 用户直接访问编程库 (uDAPL) MPI InfiniBand 子网管理器 诊断实用程序 NVIDIA 固件工具 (MFT) 堆栈架构 下图显示了NVIDIA OFED堆栈的示意图,以及上层协议(ULP)如何与硬件、内核和用户空间进行交互的接口。应用程序级别还显示了NVIDIA OFED适...
@@ -871,6 +871,7 @@ static inline int _mlx5_post_send(struct ibv_qp *ibqp, struct ibv_send_wr *wr,seg += sizeof *ctrl; size = sizeof *ctrl / 16;qp->sq.wr_data[idx] = 0;switch (ibqp->qp_type) { case IBV_QPT_XRC_SEND: ...
int dr_send_postsend_action(struct mlx5dv_dr_domain *dmn, struct mlx5dv_dr_action *action); /* buddy functions & structure */ struct dr_icm_mr; struct dr_icm_buddy_mem { bitmap **bits; unsigned int *num_free; bitmap **set_bit; uint32_t max_order; struct list_node list_node...
mlx5_ib:处理IB功能 libmlx5:实现指定硬件的用户空间功能。如果固件和驱动不兼容,这个驱动不会加载并且会打印一条信息在dmesg中。下面是libmlx5的环境变量: MLX5_FREEZE_ON_ERROR_CQE MLX5_POST_SEND_PREFER_BF MLX5_SHUT_UP_BF MLX5_SINGLE_THREADED ...
[PATCH libmlx5 v2 4/5] libmlx5: Added QP and XSRQ create/destroy flow with user index From: Haggai Abramovsky <hag...@mellanox.com> When wokring with CQE version 1, the library allocates a user-index for each new QP/XSRQ, and this user-index is passed to the kernel....
muon:rank18.testf90: Unable to alloc send buffer MR on mlx5_0: Cannot allocate memory muon:rank18.testf90: Unable to allocate UD send buffer pool Abort(1615247) on node 0 (rank 0 in comm 0): Fatal error in PMPI_Init: Other MPI error, error stack...
muon:rank18.testf90: Unable to alloc send buffer MR on mlx5_0: Cannot allocate memory muon:rank18.testf90: Unable to allocate UD send buffer pool Abort(1615247) on node 0 (rank 0 in comm 0): Fatal error in PMPI_Init: Other MPI e...
MLX5_IB_OBJECT_UAR, MLX5_IB_METHOD_UAR_OBJ_DESTROY, 1);if (!bf->length) goto end;if (bf->mmaped_entry && munmap(bf->uar, bf->length)) assert(false);fill_attr_in_obj(cmd, MLX5_IB_ATTR_UAR_OBJ_DESTROY_HANDLE, bf->uar_handle); ...
void (*prepare_for_postsend)(uint8_t *hw_ste_p, uint32_t ste_size); 1 change: 1 addition & 0 deletions 1 providers/mlx5/dr_ste_v0.c Original file line numberDiff line numberDiff line change @@ -1908,6 +1908,7 @@ static struct dr_ste_ctx ste_ctx_v0 = { .get_byte_mask...