---
name: "rdma_client"
section: "1"
platform: "linux"
package: "rdma-core"
version: "65.0-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/rdma_client"
---

# rdma\_client(1)

simple RDMA CM connection and ping-pong test.

## NAME

rdma\_client - simple RDMA CM connection and ping-pong test.

## SYNOPSIS

```
rdma_client [-s server_address] [-p server_port]
```

## DESCRIPTION

Uses synchronous librdmam calls to establish an RDMA connection between two nodes.  This example is intended to provide a very simple coding example of how to use RDMA.

## OPTIONS

- \-s server\_address

  Specifies the address of the system that the rdma\_server is running on. By default, the client will attempt to connect to the server using 127.0.0.1.

- \-p server\_port

  Specifies the port number that the server listens on.  By default the server listens on port 7471.

## NOTES

Basic usage is to start rdma\_server, then connect to the server using the rdma\_client program.

Because this test maps RDMA resources to userspace, users must ensure that they have available system resources and permissions.  See the libibverbs README file for additional details.

## SEE ALSO

[rdma\_cm(7)](/rdma_cm/7.md), [udaddy(1)](/udaddy/1.md), [mckey(1)](/mckey/1.md), [rping(1)](/rping/1.md), [rdma\_server(1)](/rdma_server/1.md)