more detail about perftest in https://renfeng.org/RDMA101/01-introduction/02-environment-and-first-program/#_1

[rayeaster]

might be useful to add a small setup guidance on perftest tool
for example, on Ubuntu 24.04

run

sudo apt update

sudo apt install -y \
    perftest \
    rdma-core \
    ibverbs-utils \
    ibverbs-providers \
    libibverbs-dev \
    librdmacm-dev

then check

which ib_write_bw
which ib_read_bw
which ib_send_bw
which ib_write_lat
which ib_read_lat
which ib_send_lat

ib_write_bw --version

dpkg -l | grep -E 'perftest|rdma-core|libibverbs'

expected output similar to

(condaenv) root@ubuntu:~/rdma-test# which ib_write_bw
which ib_read_bw
which ib_send_bw
which ib_write_lat
which ib_read_lat
which ib_send_lat
/usr/bin/ib_write_bw
/usr/bin/ib_read_bw
/usr/bin/ib_send_bw
/usr/bin/ib_write_lat
/usr/bin/ib_read_lat
/usr/bin/ib_send_lat
(condaenv) root@ubuntu:~/rdma-test# 
(condaenv) root@ubuntu:~/rdma-test# ib_write_bw --version
Version: 6.28
(condaenv) root@ubuntu:~/rdma-test# dpkg -l | grep -E 'perftest|rdma-core|libibverbs'
ii  ibverbs-providers:amd64                 2601.0.7-1                                 amd64        User space provider drivers for libibverbs
ii  ibverbs-utils                           2601.0.7-1                                 amd64        Examples for the libibverbs library
ii  libibverbs-dev:amd64                    2601.0.7-1                                 amd64        Development files for the libibverbs library
ii  libibverbs1:amd64                       2601.0.7-1                                 amd64        Library for direct userspace use of RDMA (InfiniBand/iWARP)
ii  perftest                                26.01.5-1                                  amd64        Infiniband verbs performance tests
ii  rdma-core                               2601.0.7-1                                 amd64        RDMA core userspace infrastructure and documentation