<p>A quick guide how to use Infiniband on the Open Telekom Cloud</p>
<ol>
<li>Create 2 ECS with H1 or H2 flavor using the RHEL7 public image</li>
</ol>
<p><img alt="" src="/user/pages/01.home/guide-for-using-infiniband-on-otc/OTC-Infiniband-howto1.png" /></p>
<ol start="2">
<li>on both systems please modprobe the ib_srp module and restart the srpd service</li>
</ol>
<pre>
# modprobe ib_srp
# service srpd restart
</pre>
<p><img alt="" src="/user/pages/01.home/guide-for-using-infiniband-on-otc/OTC-Infiniband-howto5.png" /></p>
<ol start="3">
<li>on both systems check with ping that they both can reach each other</li>
</ol>
<p><img alt="" src="/user/pages/01.home/guide-for-using-infiniband-on-otc/OTC-Infiniband-howto6.png" /></p>
<ol start="4">
<li>on both system then please install the "iperf3" package via yum</li>
</ol>
<pre>
# yum install iperf3
</pre>
<p><img alt="" src="/user/pages/01.home/guide-for-using-infiniband-on-otc/OTC-Infiniband-howto8.png" /></p>
<ol start="5">
<li>on both systems please disable the iptables firewall</li>
</ol>
<pre>
# iptables --flush && iptables -t nat --flush
</pre>
<p><img alt="" src="/user/pages/01.home/guide-for-using-infiniband-on-otc/OTC-Infiniband-howto10.png" /></p>
<ol start="6">
<li>on one system start the "iperf3" as a server</li>
</ol>
<pre>
# iperf3 -s
</pre>
<ol start="7">
<li>on the other system start "iperf3" as client</li>
</ol>
<pre>
# iperf3 -c [ip-address-of-the-first-system]
</pre>
<p><img alt="" src="/user/pages/01.home/guide-for-using-infiniband-on-otc/OTC-Infiniband-howto9.png" /></p>
<p>Now you can enjoy your super fast network connection between the 2 VMs.</p>
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