Intel Omin-Path Architecture 搭建调优与测试

OPA在Centos上的搭建

1. 首先确认Omni-Path Host Fabric Interfaces (HFIs)

# yum install –y pciutils

# lspci -vv | grep Omni

:00.0 Fabric controller: Intel Corporation Omni-Path HFI Silicon  Series [discrete] (rev )

        Subsystem: Intel Corporation Omni-Path HFI Silicon  Series [discrete]

2. 安装Intel® Omni-Path Software

Intel® Omni-Path Software可以通过下载安装包的方式安装也可以通过从包源(Package Source)的方式，安装包可以从以下链接下载，

https://downloadcenter.intel.com/search?keyword=Omni-Path

由于Intel® Omni-Path Software已经被打包进CentOS的包源，我们这里采用从包源来安装。

首先安装前提包：

# yum install -y libibmad libibverbs librdmacm libibcm qperf perftest rdma infinipath-psm expat elfutils-libelf-devel libstdc++-devel gcc-gfortran atlas tcl expect tcsh sysfsutils pciutils bc libibumad libibumad-devel libibumad libibumad-devel libibverbs-devel libibmaddevel librdmacm-devel ibacm-devel openssl-devel libuuid-devel expatdevel infinipath-psm-devel valgrind-devel libgnome libibverbs* opensm-libs libhfi1 papi ncurses-devel hwloc hwloc-gui

接着安装Intel® Omni-Path Software并重启机器

#yum install -y opa-basic-tools

# reboot

确认Host Fabric Interfaces (HFIs)驱动hfi1安装并装载

# modprobe hfi1

$ lsmod | grep hfi1

3. 配置 IPoIB IPV4

vi /etc/sysconfig/network-scripts/ifcfg-ib0

DEVICE=ib0
BOOTPROTO=static
IPADDR=10.4.204.173

BROADCAST=10.4.255.255
NETWORK=10.4.0.0
NETMASK=255.255.0.0
ONBOOT=yes
CONNECTED_MODE=yes
MTU=

4. 安装OPA FM

yum install –y opa-fastfabric opa-address-resolution opa-fm

# systemctl start opafm

5. 启动IPoIB接口

# ifup ib0

Verify that RDMA is working

Verify that RDMA kernel part is loaded

[root@jfz1r04h19 z1r04h19]# lsmod |grep ib
ib_isert
iscsi_target_mod         ib_isert
ib_iser
libiscsi                  ib_iser
scsi_transport_iscsi       ib_iser,libiscsi
ib_srpt
target_core_mod          iscsi_target_mod,ib_srpt,ib_isert
ib_srp
scsi_transport_srp        ib_srp
ib_ipoib
ib_ucm
ib_uverbs                 ib_ucm,rdma_ucm
ib_umad
rdma_cm                   rpcrdma,ib_iser,rdma_ucm,ib_isert
ib_cm                     rdma_cm,ib_srp,ib_ucm,ib_srpt,ib_ipoib
ib_core                  hfi1,rdma_cm,i40iw,ib_cm,iw_cm,rpcrdma,ib_srp,ib_ucm,rdmavt,ib_iser,ib_srpt,ib_umad,ib_uverbs,rdma_ucm,ib_ipoib,ib_isert

Verify that RDMA devices are available

[root@jfz1r04h19 z1r04h19]# ibv_devices
    device                 node GUID
    ------              ----------------
    i40iw1              a4bf014ddd2c0000
    i40iw0              a4bf014ddd2b0000
hfi1_0              001175010172feb8

Verify that RDMA devices can be accessed

[root@jfz1r04h19 z1r04h19]# ibv_devinfo -d hfi1_0
hca_id: hfi1_0
        transport:                      InfiniBand ()
        fw_ver:                         0.0.
        node_guid:                      :::feb8
        sys_image_guid:                 :::feb8
        vendor_id:                      0x1175
        vendor_part_id:
        hw_ver:                         0x11
        board_id:                       Intel Omni-Path Host Fabric Interface Adapter  Series
        phys_port_cnt:
                port:
                        state:                  PORT_ACTIVE ()
                        max_mtu:                 ()
                        active_mtu:              ()
                        sm_lid:
                        port_lid:
                        port_lmc:               0x00
                        link_layer:             InfiniBand
PORT_ACTIVE is 

Send traffic using ibv_*_pingpong

Server side:
[z1r04h18@jfz1r04h18 ~]$ ibv_ud_pingpong -g  -d hfi1_0 -i
Client side:

[root@jfz1r04h19 z1r04h19]# ibv_ud_pingpong -g  -d hfi1_0 -i  192.168.200.118
  local address:  LID 0x0001, QPN 0x000062, PSN 0xafa045: GID fe80:::::feb8
  remote address: LID 0x0005, QPN 0x0000d4, PSN 0xdf6b42, GID fe80:::::f1a6
 bytes in 0.01 seconds = 2217.65 Mbit/sec
 iters in 0.01 seconds = 14.78 usec/iter

Send traffic using rping

Yum install –y librdmacm-utils
Server side:
[z1r04h18@jfz1r04h18 ~]$ rping -s -a 192.168.200.118 -v
Client side:
[root@jfz1r04h19 z1r04h19]# rping -c -a 192.168.200.118 -v

IPoIB over OPA调优

Transparent Huge Pages

$ cat /sys/kernel/mm/transparent_hugepage/enabled
[always] madvise never

Do Not Enable intel_iommu

[root@jfz1r04h19 z1r04h19]# cat /etc/default/grub

GRUB_TIMEOUT=

GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)"

GRUB_DEFAULT=saved

GRUB_DISABLE_SUBMENU=true

GRUB_TERMINAL_OUTPUT="console"

GRUB_CMDLINE_LINUX="crashkernel=auto rd.lvm.lv=centos/root rd.lvm.lv=centos/swap rhgb quiet"

GRUB_DISABLE_RECOVERY="true"

 HFI1 Driver Module Parameters

显示驱动参数

for x in /sys/module/hfi1/parameters/*; do echo "$(basename $x) " $(cat $x); done

aspm  0

cache_size  256

cap_mask  0x4c09a00cb9a

cu  1

desct_intr  64

eager_buffer_size  2097152

hdrq_entsize  32

kdeth_qp  128

krcvqs

link_crc_mask  3

lkey_table_size  16

loopback  0

max_ahs  65535

max_cqes  3145727

max_cqs  131071

max_mcast_grps  16384

max_mcast_qp_attached  16

max_mtu  10240

max_pds  65535

max_qps  32768

max_qp_wrs  16383

max_sges  96

max_srqs  1024

max_srq_sges  128

max_srq_wrs  131071

num_sdma  0

num_user_contexts  36

num_vls  8

pcie_caps  0

pcie_ctle  1

pcie_force  0

pcie_pset  2

pcie_retry  5

pcie_target  3

piothreshold  256

qp_table_size  256

rcvarr_split  25

rcvhdrcnt  2048

rcv_intr_count  16

rcv_intr_timeout  840

sdma_comp_size  128

sdma_descq_cnt  2048

sdma_idle_cnt  250

sge_copy_mode  0

user_credit_return_threshold  33

wss_clean_period  256

wss_threshold  80

7.0 Verbs Benchmarks

8.0 IPoFabric Performance

OPA 实现的是 IP over Fabric or IPoFabric，从使用的角度也是IPoIB,而且用的是 ib_ipoib驱动

 

设置8K MTU

Cat /etc/sysconfig/network-scripts/ifcfg-ib0

ONBOOT=yes
NM_CONTROLLED=no
MTU=
CONNECTED_MODE=yes

IPoFabric Datagram Mode Configuration

一般Connected Mode性能最好

[root@jfz1r04h19 z1r04h19]# cat /sys/class/net/ib0/mode

connected

TCP Parameter Tuning for IPoFabric Performance

一般不需要，如果内存充足的话可以设置一下，性能提高10%:

sudo sysctl -w net.ipv4.tcp_rmem="16384 349520 16777216"
sudo sysctl -w net.ipv4.tcp_wmem="16384 349520 16777216"
sudo sysctl -w net.core.rmem_max=
sudo sysctl -w net.core.wmem_max=

sudo sysctl -w net.core.somaxconn=
sudo sysctl -w net.ipv4.tcp_mtu_probing=
sudo sysctl -w net.core.netdev_max_backlog=

实际

[z1r04h19@jfz1r04h19 yuntong]$ iperf3 -c 192.168.200.118

性能在一分钟之内下降

35.8 33.1 24.2 23.0

测试IPoIB over OPA(Omin-Path Architecture)

TCP模式带宽为25G：

[z1r04h19@jfz1r04h19 ~]$ iperf3 -c 192.168.200.118

Connecting to host 192.168.200.118, port 

[  ] local 192.168.200.49 port  connected to 192.168.200.118 port 

[ ID] Interval           Transfer     Bandwidth       Retr  Cwnd

- - - - - - - - - - - - - - - - - - - - - - - - -

[ ID] Interval           Transfer     Bandwidth       Retr

[  ]   0.00-10.00  sec  29.3 GBytes  25.1 Gbits/sec                 sender

[  ]   0.00-10.00  sec  29.3 GBytes  25.1 Gbits/sec                  receiver

一共72个core，IPoIB CPU占用率很小

UDP模式带宽与TCP一样为25G：

[z1r04h19@jfz1r04h19 ~]$ iperf3 -u -c 192.168.200.118

Connecting to host 192.168.200.118, port 

- - - - - - - - - - - - - - - - - - - - - - - - -

[ ID] Interval           Transfer     Bandwidth       Jitter    Lost/Total Datagrams

[  ]   0.00-10.00  sec  1.25 MBytes  1.05 Mbits/sec  0.016 ms  / (%)

只有1G, 原因是：

  -b,--bandwidth #[KMG][/#] target bandwidth in bits/sec (0 for unlimited)

                            (default 1 Mbit/secfor UDP, unlimited for TCP)

                            (optional slash andpacket count for burst mode)

UDP目标带宽设置为40G

[z1r04h19@jfz1r04h19 ~]$ iperf3 -u -c 192.168.200.118 -b 40G

Connecting to host 192.168.200.118, port 

[  ] local 192.168.200.49 port  connected to 192.168.200.118 port 

[ ID] Interval           Transfer     Bandwidth       Total Datagrams

- - - - - - - - - - - - - - - - - - - - - - - - -

[ ID] Interval           Transfer     Bandwidth       Jitter    Lost/Total Datagrams

[  ]   0.00-10.00  sec  27.9 GBytes  24.0 Gbits/sec  0.003 ms  / (%)

[  ] Sent  datagrams

length of buffer默认为128K,设置为1M,比起默认的带宽25G有提升:

-l, --len       #[KMG]    length of buffer to read or write

(default 128 KB for TCP, dynamic or 1 for UDP)

 [z1r04h19@jfz1r04h19 ~]$ iperf3 -c 192.168.200.118 -l 1M

Connecting to host 192.168.200.118, port 

[  ] local 192.168.200.49 port  connected to 192.168.200.118 port 

- - - - - - - - - - - - - - - - - - - - - - - - -

[ ID] Interval           Transfer     Bandwidth       Retr

[  ]   0.00-10.00  sec  32.1 GBytes  27.5 Gbits/sec                 sender

[  ]   0.00-10.00  sec  32.1 GBytes  27.5 Gbits/sec                  receiver

多线程性能没有提升：

-P,--parallel  #         number of parallel client streams torun

[z1r04h19@jfz1r04h19 ~]$ iperf3 -c 192.168.200.118  -P 

[SUM]   0.00-10.00  sec  28.8 GBytes  24.7 Gbits/sec                 sender

[SUM]   0.00-10.00  sec  28.8 GBytes  24.7 Gbits/sec                  receiver

使用zerocopy 发送，没有任何提升

-Z,--zerocopy            use a 'zero copy'method of sending data

[z1r04h19@jfz1r04h19 ~]$ iperf3 -c 192.168.200.118  -Z

- - - - - - - - - - - - - - - - - - - - - - - - -

[ ID] Interval           Transfer     Bandwidth       Retr

[  ]   0.00-10.00  sec  27.3 GBytes  23.4 Gbits/sec                 sender

[  ]   0.00-10.00  sec  27.3 GBytes  23.4 Gbits/sec                  receiver

CPU affinity可达46G

-A, --affinity n/n,m

Set  the  CPU  affinity, if possible (Linux and FreeBSD only).  On both the client and server you can set the local affinity by using the n form of this argument (where n is a CPU number).  In addition, on the client side  you  can override  the  server's affinity for just that one test, using the n,m form of argument.  Note that when using this feature, a process will only be bound to a single CPU (as opposed to a set containing potentialy multiple CPUs).

[root@jfz1r04h19 z1r04h19]# iperf3 -c 192.168.200.118 -A
 [ ID] Interval           Transfer     Bandwidth       Retr
[  ]   0.00-10.00  sec  54.2 GBytes  46.6 Gbits/sec                 sender

尝试不同 -A 参数 当-A 4效果最好：

[root@jfz1r04h19 z1r04h19]# iperf3 -c 192.168.200.118 -A
[  ]   8.00-8.57   sec  1.78 GBytes  26.6 Gbits/sec       2.50 MBytes

[root@jfz1r04h19 z1r04h19]# iperf3 -c 192.168.200.118 -A
 [ ID] Interval           Transfer     Bandwidth       Retr
[  ]   0.00-10.00  sec  54.2 GBytes  46.6 Gbits/sec                 sender

[root@jfz1r04h19 z1r04h19]# iperf3 -c 192.168.200.118 -A
[  ]   0.00-10.00  sec  31.0 GBytes  26.6 Gbits/sec                 sender
[  ]   0.00-10.00  sec  31.0 GBytes  26.6 Gbits/sec                  receiver

延迟测试

[root@jfz1r04h19 z1r04h19]# ib_send_lat -a -c UD  -d hfi1_0 -i  192.168.200.118
 Max msg size in UD is MTU
 Changing to this MTU
---------------------------------------------------------------------------------------
                    Send Latency Test
 Dual-port       : OFF          Device         : hfi1_0
 Number of qps   :             Transport type : IB
 Connection type : UD           Using SRQ      : OFF
 TX depth        :
 Mtu             : [B]
 Link type       : IB
 Max inline data : [B]
 rdma_cm QPs     : OFF
 Data ex. method : Ethernet
---------------------------------------------------------------------------------------
 local address: LID 0x01 QPN 0x0078 PSN 0xa16791
 remote address: LID 0x05 QPN 0x00ea PSN 0xf8cb30
---------------------------------------------------------------------------------------
 #bytes #iterations    t_min[usec]    t_max[usec]  t_typical[usec]    t_avg[usec]    t_stdev[usec]   % percentile[usec]   99.9% percentile[usec]
                 4.52           23.20        4.64                4.66             0.26           5.26                 23.20
                 4.44           22.25        4.55                4.59             0.47           4.90                 22.25
                 4.44           5.56         4.56                4.56             0.08           4.73                 5.56
                4.43           5.35         4.53                4.54             0.07           4.96                 5.35
                4.40           7.54         4.54                4.55             0.10           5.07                 7.54
                4.46           6.12         4.56                4.56             0.06           4.74                 6.12
               4.47           12.56        4.59                4.61             0.39           4.74                 12.56
               4.52           12.62        4.64                4.68             0.46           5.25                 12.62
               4.58           6.01         4.70                4.71             0.07           4.91                 6.01
              4.75           7.32         4.87                4.89             0.08           5.37                 7.32
              4.96           6.01         5.11                5.12             0.08           5.34                 6.01
              5.47           7.24         5.64                5.65             0.09           5.89                 7.24
---------------------------------------------------------------------------------------