RDMA Send Work Request请求 structibv_send_wr{uint64_twr_id;structibv_send_wr*next;structibv_sge*sg_list;intnum_sge;enumibv_wr_opcodeopcode;intsend_flags;uint32_timm_data;/* in network byte order */union{struct{uint64_tremote_addr;uint32_trkey;}rdma;struct{uint64_tremote_addr;uint64_...
_bandaoyu的note-CSDN博客前言看介绍,像是mellonx针对其kernel bypass网卡(RDMA网卡)提供的一个lib库,该lib库对外提供socket api,使得用户的程序不需要修改就可以直接使用kernel bypass网卡(如RDMA网卡)。我们都知道RDMA 网卡目前使用的是rdma_cm和vbers api编程,和socket不一样,如果能用socket对RDMA编程,那确实是很...
这意味着底层驱动程序(即CPU)将读取数据,而不是RDMA设备。这意味着将不会检查L_Key,实际上那些内存缓冲区甚至不必注册(毕竟CPU本来是老大/主子),并且可以在ibv_post_send()将要结束后,立即重用它们。仅对Send和RDMA write操作码有效。 由于在该代码中没有涉及到key的交换,所以也无法使用RDMA传输,所以还是使用了CP...
一、Send/RecvSend/Recv是一种两端cpu都需要参与的双端操作,并且Recv端需要提前显式的下发WQE(工作队列元素,也就是任务)给硬件,否则硬件无法知道该怎么处理接收到的数据(例如把数据保存到内存的哪个地方)。如下图所示,左边计算机1是发送端,右边计算机2是接受端。发送
RDMA（Remote Direct Memory Access）远程直接内存访问是一种技术，它使两台联网的计算机能够在主内存中...
int rdma_post_send (struct rdma_cm_id *id, void *context, void *addr, size_tlength, struct ibv_mr *mr, intflags); Descrição Poste uma solicitação de trabalho para a fila de envio do par de filas que está associado ao identificadorrdma_cm_id. O conteúdo do buffer postad...
请求远程端发送数据的操作(RDMA Read 和 Atomic操作) 将数据发送到远程端的操作(Send 和 RDMA Write-有或没有立即数据 immediate data) 如果满足以下所有条件,Unsignaled Completions 可用于第一组的操作: 应用程序可以请求远程端读取多个缓冲区(在需要使用它们的内容之前) ...
. [ 155.655299] irdma driver version: 1.15.15 Findings My code sets up a UD queue pair using a socket to share information, and times how long a round trip takes using IBV_WR_SEND and then waiting for a response from the other side. I no...
Decrease in the number of write operations on the delivery of RDMA send messages of out-of-orderAn RNIC implementation that performs direct data placement to memory where all segments of a particular connection are aligned, or moves data through reassembly buffers where all segments of a ...
Open hc235280 wants to merge 1 commit into linux-rdma:master from hc235280:support_mlu590+6 −0 Conversation 0 Commits 1 Checks 0 Files changed 1 Conversation hc235280 commented Sep 20, 2024 No description provided. Perftest supports MLU latency tests with read/send verbs only … ...