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<p class="MsoNormal">Hi all , <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I am trying to understand the verbs provider specially difference between the below:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<ol style="margin-top:0in" start="1" type="1">
<li class="MsoListParagraph" style="margin-left:0in;mso-list:l0 level1 lfo1">Verbs<o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l0 level1 lfo1">Verbs;ofi_rxd<o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l0 level1 lfo1">Verbs;ofi_rxm<o:p></o:p></li></ol>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="p1">They seem to work on 3 different protocols<o:p></o:p></p>
<p class="p1"><o:p> </o:p></p>
<p class="p1"><o:p> </o:p></p>
<p class="MsoNormal" style="line-height:15.0pt;background:white"><b><i><span style="font-size:10.5pt;font-family:"Helvetica Neue";color:#333333;mso-ligatures:none">FI_PROTO_RDMA_CM_IB_RC</span></i></b><b><span style="font-size:10.5pt;font-family:"Helvetica Neue";color:#333333;mso-ligatures:none"><o:p></o:p></span></b></p>
<p class="MsoNormal" style="margin-left:.5in;line-height:15.0pt;background:white">
<span style="font-size:10.5pt;font-family:"Helvetica Neue";color:#333333;mso-ligatures:none">The protocol runs over Infiniband reliable-connected queue pairs, using the RDMA CM protocol for connection establishment.<o:p></o:p></span></p>
<p class="p1"><o:p> </o:p></p>
<p class="MsoNormal" style="line-height:15.0pt;background:white"><b><i><span style="font-size:10.5pt;font-family:"Helvetica Neue";color:#333333;mso-ligatures:none">FI_PROTO_RXM</span></i></b><b><span style="font-size:10.5pt;font-family:"Helvetica Neue";color:#333333;mso-ligatures:none"><o:p></o:p></span></b></p>
<p class="MsoNormal" style="margin-left:.5in;line-height:15.0pt;background:white">
<span style="font-size:10.5pt;font-family:"Helvetica Neue";color:#333333;mso-ligatures:none">Reliable-datagram protocol implemented over message endpoints. RXM is a libfabric utility component that adds RDM endpoint semantics over MSG endpoint semantics.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:7.5pt;line-height:15.0pt;background:white">
<b><i><span style="font-size:10.5pt;font-family:"Helvetica Neue";color:#333333;mso-ligatures:none">FI_PROTO_RXD</span></i></b><b><span style="font-size:10.5pt;font-family:"Helvetica Neue";color:#333333;mso-ligatures:none"><o:p></o:p></span></b></p>
<p class="MsoNormal" style="margin-left:.5in;line-height:15.0pt;background:white">
<span style="font-size:10.5pt;font-family:"Helvetica Neue";color:#333333;mso-ligatures:none">Reliable-datagram protocol implemented over datagram endpoints. RXD is a libfabric utility component that adds RDM endpoint semantics over DGRAM endpoint semantics.<o:p></o:p></span></p>
<p class="p1"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="line-height:15.0pt;background:white"><span style="color:black">From my test of
</span><b><i><span style="font-size:10.5pt;font-family:"Helvetica Neue";color:#333333;mso-ligatures:none">FI_PROTO_RDMA_CM_IB_RC</span></i></b><b><span style="font-size:10.5pt;font-family:"Helvetica Neue";color:#333333;mso-ligatures:none">, I see in wireshark
that, its RoCEv2 protocol when I test application of RDMA.<o:p></o:p></span></b></p>
<p class="MsoNormal" style="line-height:15.0pt;background:white"><b><span style="font-size:10.5pt;font-family:"Helvetica Neue";color:#333333;mso-ligatures:none">What protocol do RXM and RXD use? I see its TCP packets on the wire? Does it mean it uses TCP ?<o:p></o:p></span></b></p>
<p class="MsoNormal" style="line-height:15.0pt;background:white"><b><span style="font-size:10.5pt;font-family:"Helvetica Neue";color:#333333;mso-ligatures:none">Is it possible to use RoCEv2 for RXM and RXD?<o:p></o:p></span></b></p>
<p class="MsoNormal" style="line-height:15.0pt;background:white"><b><span style="font-size:10.5pt;font-family:"Helvetica Neue";color:#333333;mso-ligatures:none">What is the best provider to use for RDMA ?
<o:p></o:p></span></b></p>
<p class="MsoNormal" style="line-height:15.0pt;background:white"><b><span style="font-size:10.5pt;font-family:"Helvetica Neue";color:#333333;mso-ligatures:none"><o:p> </o:p></span></b></p>
<p class="MsoNormal" style="line-height:15.0pt;background:white"><b><span style="font-size:10.5pt;font-family:"Helvetica Neue";color:#333333;mso-ligatures:none">Regards,<o:p></o:p></span></b></p>
<p class="MsoNormal" style="line-height:15.0pt;background:white"><b><span style="font-size:10.5pt;font-family:"Helvetica Neue";color:#333333;mso-ligatures:none">Niyaz<o:p></o:p></span></b></p>
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