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<br>
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Hello Arun,</div>
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<br>
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Both protocols you mention do appear on the `fi_info`, multiple times, courtesy of two network cards. Running ibstat, we've got `mlx4_0` for the Infiniband and `mlx4_1` is the Ethernet card.<br>
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<br>
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Ran the utility 2 times for each of the 3 IP configurations, once statically and once as part of an MPI job. As the logs are pretty lengthy, I only include the static `fi_info -p verbs` output in the email body, and the rest I have linked.<br>
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<br>
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<div>`$ export FI_LOG_LEVEL=info` (included in the attached logs)<br>
</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<span>`$ fi_info -p verbs`<br>
</span>
<div><br>
</div>
<div>
<ul>
<li>IPv4<br>
</li></ul>
</div>
<div>```</div>
<div>provider: verbs;ofi_rxm<br>
</div>
<div> fabric: IB-0xfe80000000000000<br>
</div>
<div> domain: mlx4_0<br>
</div>
<div> version: 1.0<br>
</div>
<div> type: FI_EP_RDM<br>
</div>
<div> protocol: FI_PROTO_RXM<br>
</div>
<div>provider: verbs;ofi_rxm<br>
</div>
<div> fabric: IB-0xfe80000000000000<br>
</div>
<div> domain: mlx4_1<br>
</div>
<div> version: 1.0<br>
</div>
<div> type: FI_EP_RDM<br>
</div>
<div> protocol: FI_PROTO_RXM<br>
</div>
<div>provider: verbs;ofi_rxm<br>
</div>
<div> fabric: IB-0xfe80000000000000<br>
</div>
<div> domain: mlx4_1<br>
</div>
<div> version: 1.0<br>
</div>
<div> type: FI_EP_RDM<br>
</div>
<div> protocol: FI_PROTO_RXM<br>
</div>
<div>provider: verbs<br>
</div>
<div> fabric: IB-0xfe80000000000000<br>
</div>
<div> domain: mlx4_0<br>
</div>
<div> version: 1.0<br>
</div>
<div> type: FI_EP_MSG<br>
</div>
<div> protocol: FI_PROTO_RDMA_CM_IB_RC<br>
</div>
<div>provider: verbs<br>
</div>
<div> fabric: IB-0xfe80000000000000<br>
</div>
<div> domain: mlx4_1<br>
</div>
<div> version: 1.0<br>
</div>
<div> type: FI_EP_MSG<br>
</div>
<div> protocol: FI_PROTO_RDMA_CM_IB_RC<br>
</div>
<div>provider: verbs<br>
</div>
<div> fabric: IB-0xfe80000000000000<br>
</div>
<div> domain: mlx4_1<br>
</div>
<div> version: 1.0<br>
</div>
<div> type: FI_EP_MSG<br>
</div>
<div> protocol: FI_PROTO_RDMA_CM_IB_RC<br>
</div>
<div>provider: verbs<br>
</div>
<div> fabric: IB-0xfe80000000000000<br>
</div>
<div> domain: mlx4_1-dgram<br>
</div>
<div> version: 1.0<br>
</div>
<div> type: FI_EP_DGRAM<br>
</div>
<div> protocol: FI_PROTO_IB_UD<br>
</div>
<div>provider: verbs<br>
</div>
<div> fabric: IB-0xfe80000000000000<br>
</div>
<div> domain: mlx4_0-dgram<br>
</div>
<div> version: 1.0<br>
</div>
<div> type: FI_EP_DGRAM<br>
</div>
<div> protocol: FI_PROTO_IB_UD<br>
</div>
<span></span>```</div>
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<br>
</div>
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<ul>
<li>IPv6 link local address<br>
</li></ul>
</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
```</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<span>provider: verbs;ofi_rxm<br>
</span>
<div> fabric: IB-0xfe80000000000000<br>
</div>
<div> domain: mlx4_1<br>
</div>
<div> version: 1.0<br>
</div>
<div> type: FI_EP_RDM<br>
</div>
<div> protocol: FI_PROTO_RXM<br>
</div>
<div>provider: verbs;ofi_rxm<br>
</div>
<div> fabric: IB-0xfe80000000000000<br>
</div>
<div> domain: mlx4_1<br>
</div>
<div> version: 1.0<br>
</div>
<div> type: FI_EP_RDM<br>
</div>
<div> protocol: FI_PROTO_RXM<br>
</div>
<div>provider: verbs<br>
</div>
<div> fabric: IB-0xfe80000000000000<br>
</div>
<div> domain: mlx4_1<br>
</div>
<div> version: 1.0<br>
</div>
<div> type: FI_EP_MSG<br>
</div>
<div> protocol: FI_PROTO_RDMA_CM_IB_RC<br>
</div>
<div>provider: verbs<br>
</div>
<div> fabric: IB-0xfe80000000000000<br>
</div>
<div> domain: mlx4_1<br>
</div>
<div> version: 1.0<br>
</div>
<div> type: FI_EP_MSG<br>
</div>
<div> protocol: FI_PROTO_RDMA_CM_IB_RC<br>
</div>
<div>provider: verbs<br>
</div>
<div> fabric: IB-0xfe80000000000000<br>
</div>
<div> domain: mlx4_1-dgram<br>
</div>
<div> version: 1.0<br>
</div>
<div> type: FI_EP_DGRAM<br>
</div>
<div> protocol: FI_PROTO_IB_UD<br>
</div>
<div>provider: verbs<br>
</div>
<div> fabric: IB-0xfe80000000000000<br>
</div>
<div> domain: mlx4_0-dgram<br>
</div>
<div> version: 1.0<br>
</div>
<div> type: FI_EP_DGRAM<br>
</div>
<div> protocol: FI_PROTO_IB_UD<br>
</div>
<div>provider: verbs<br>
</div>
<div> fabric: IB-0xfe80000000000000<br>
</div>
<div> domain: mlx4_0<br>
</div>
<div> version: 1.0<br>
</div>
<div> type: FI_EP_MSG<br>
</div>
<span> protocol: FI_PROTO_RDMA_CM_IB_RC</span><br>
</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
```<br>
</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<ul>
<li>IP global address</li></ul>
<span>```<br>
provider: verbs;ofi_rxm<br>
</span>
<div> fabric: IB-0xfe80000000000000<br>
</div>
<div> domain: mlx4_0<br>
</div>
<div> version: 1.0<br>
</div>
<div> type: FI_EP_RDM<br>
</div>
<div> protocol: FI_PROTO_RXM<br>
</div>
<div>provider: verbs;ofi_rxm<br>
</div>
<div> fabric: IB-0xfe80000000000000<br>
</div>
<div> domain: mlx4_1<br>
</div>
<div> version: 1.0<br>
</div>
<div> type: FI_EP_RDM<br>
</div>
<div> protocol: FI_PROTO_RXM<br>
</div>
<div>provider: verbs;ofi_rxm<br>
</div>
<div> fabric: IB-0xfe80000000000000<br>
</div>
<div> domain: mlx4_1<br>
</div>
<div> version: 1.0<br>
</div>
<div> type: FI_EP_RDM<br>
</div>
<div> protocol: FI_PROTO_RXM<br>
</div>
<div>provider: verbs<br>
</div>
<div> fabric: IB-0xfe80000000000000<br>
</div>
<div> domain: mlx4_0<br>
</div>
<div> version: 1.0<br>
</div>
<div> type: FI_EP_MSG<br>
</div>
<div> protocol: FI_PROTO_RDMA_CM_IB_RC<br>
</div>
<div>provider: verbs<br>
</div>
<div> fabric: IB-0xfe80000000000000<br>
</div>
<div> domain: mlx4_1<br>
</div>
<div> version: 1.0<br>
</div>
<div> type: FI_EP_MSG<br>
</div>
<div> protocol: FI_PROTO_RDMA_CM_IB_RC<br>
</div>
<div>provider: verbs<br>
</div>
<div> fabric: IB-0xfe80000000000000<br>
</div>
<div> domain: mlx4_1<br>
</div>
<div> version: 1.0<br>
</div>
<div> type: FI_EP_MSG<br>
</div>
<div> protocol: FI_PROTO_RDMA_CM_IB_RC<br>
</div>
<div>provider: verbs<br>
</div>
<div> fabric: IB-0xfe80000000000000<br>
</div>
<div> domain: mlx4_1-dgram<br>
</div>
<div> version: 1.0<br>
</div>
<div> type: FI_EP_DGRAM<br>
</div>
<div> protocol: FI_PROTO_IB_UD<br>
</div>
<div>provider: verbs<br>
</div>
<div> fabric: IB-0xfe80000000000000<br>
</div>
<div> domain: mlx4_0-dgram<br>
</div>
<div> version: 1.0<br>
</div>
<div> type: FI_EP_DGRAM<br>
</div>
<span> protocol: FI_PROTO_IB_UD</span></div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<span>```</span></div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<span><br>
</span></div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<span>IPv4: <a href="https://ybin.me/p/fa6701249f3a42a3#a6YE8SSuJgkaC90bvi0AyTucEbRNlwU4CWx7kMT6fEk=" id="LPlnk759764">
https://ybin.me/p/fa6701249f3a42a3#a6YE8SSuJgkaC90bvi0AyTucEbRNlwU4CWx7kMT6fEk=</a><br>
</span></div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<span>IPv6 link local: <a href="https://ybin.me/p/da52563897dff075#npBkL2Q+w9qyZoK9omYH+LHaLEy0zWrEL4nuZv9eSvw=" id="LPlnk316540">
https://ybin.me/p/da52563897dff075#npBkL2Q+w9qyZoK9omYH+LHaLEy0zWrEL4nuZv9eSvw=</a><br>
</span></div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<span>IPv6 global: <a href="https://ybin.me/p/15fc05690e01a3f2#znGVvfg3RGSzJAiX5sqIfSyJ/qtu9upSeyBbK14pFVM=" id="LPlnk109954">
https://ybin.me/p/15fc05690e01a3f2#znGVvfg3RGSzJAiX5sqIfSyJ/qtu9upSeyBbK14pFVM=</a><br>
</span></div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<span><br>
</span></div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<span>IPv4 MPI: <a href="https://ybin.me/p/c0c1956845ba3786#6nkO0yzY2d7N9tNksJ3EuyuYnSlCfnPVPK2qAYOmmAQ=" id="LPlnk569374">
https://ybin.me/p/c0c1956845ba3786#6nkO0yzY2d7N9tNksJ3EuyuYnSlCfnPVPK2qAYOmmAQ=</a><br>
</span></div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<span>IPv6 local MPI: <a href="https://ybin.me/p/4bd66c185e84f2f9#9+pAMTCR2tCo8S/ezIU1xRI6BNm1zGzotamSXXBZAlE=" id="LPlnk257332">
https://ybin.me/p/4bd66c185e84f2f9#9+pAMTCR2tCo8S/ezIU1xRI6BNm1zGzotamSXXBZAlE=</a><br>
</span></div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<span>IPv6 global MPI: <a href="https://ybin.me/p/26d2ab2f36ac3262#YcB69yXWz1fOitWS92IyfUDkPS2KfcECJm8mXNEAmTw=" id="LPlnk917163">
https://ybin.me/p/26d2ab2f36ac3262#YcB69yXWz1fOitWS92IyfUDkPS2KfcECJm8mXNEAmTw=</a><br>
</span></div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<span><br>
</span></div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<span>IPv4 seems to be working correctly through Infiniband, IPv6 local falls back to sockets(?) and runs through Ethernet, IPv6 global hangs.</span></div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<span><br>
</span></div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<span>Thanks a lot,</span></div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<span>Regards,</span></div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<span>Matthew</span><br>
</div>
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<p style="margin-top: 0px; margin-bottom: 0px;margin-top:0; margin-bottom:0"><span style="font-family:Calibri,Helvetica,sans-serif; font-size:11pt"><br>
</span></p>
<p style="margin-top: 0px; margin-bottom: 0px;margin-top:0; margin-bottom:0"><span style="font-family:Calibri,Helvetica,sans-serif; font-size:11pt">----</span></p>
<p style="margin-top: 0px; margin-bottom: 0px;margin-top:0; margin-bottom:0"><span style="font-family:Calibri,Helvetica,sans-serif; font-size:11pt">Matthaios Alexandrakis</span></p>
<p style="margin-top: 0px; margin-bottom: 0px;margin-top:0; margin-bottom:0"><span style="font-family:Calibri,Helvetica,sans-serif; font-size:11pt">Research Software Engineer, IT Services</span></p>
<p style="margin-top: 0px; margin-bottom: 0px;margin-top:0; margin-bottom:0"><span style="font-family:Calibri,Helvetica,sans-serif; font-size:11pt">Queen Mary University of London</span></p>
<p style="margin-top: 0px; margin-bottom: 0px;margin-top:0; margin-bottom:0"><span style="font-family:Calibri,Helvetica,sans-serif; font-size:11pt">Queen's Building CB204</span></p>
<p style="margin-top: 0px; margin-bottom: 0px;margin-top:0; margin-bottom:0"><span style="font-family:Calibri,Helvetica,sans-serif; font-size:11pt">Email: m.alexandrakis@qmul.ac.uk</span><br>
</p>
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</div>
<div id="appendonsend"></div>
<hr style="display:inline-block;width:98%" tabindex="-1">
<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Ilango, Arun <arun.ilango@intel.com><br>
<b>Sent:</b> 10 September 2019 20:00<br>
<b>To:</b> Matthew Alexandrakis <m.alexandrakis@qmul.ac.uk>; libfabric-users@lists.openfabrics.org <libfabric-users@lists.openfabrics.org><br>
<b>Subject:</b> RE: IPoIB and verbs provider</font>
<div> </div>
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<p class="x_MsoNormal">Hi Matt,</p>
<p class="x_MsoNormal"> </p>
<p class="x_MsoNormal">> <span style="font-size:12.0pt; color:black">Unfortunately, this doesn't work - it fails with an IP address not found</span></p>
<p class="x_MsoNormal"> </p>
<p class="x_MsoNormal">Can you try running the fi_info utility that ships with libfabric? “fi_info -p verbs” should list entries for the verbs provider with protocol: FI_PROTO_RDMA_CM_IB_RC and FI_PROTO_RXM. If it doesn’t show them, can you re-run with FI_LOG_LEVEL=info
and share the logs?</p>
<p class="x_MsoNormal"> </p>
<p class="x_MsoNormal"><span style="font-size:12.0pt; color:black">> Furthermore, when we do assign a globally routable IP address,</span></p>
<p class="x_MsoNormal"><span style="font-size:12.0pt; color:black">> an IP based transport is used, rather than the RDMA that should</span></p>
<p class="x_MsoNormal"><span style="font-size:12.0pt; color:black">> give better performance.</span></p>
<p class="x_MsoNormal"> </p>
<p class="x_MsoNormal">Please run fi_info for this case as well.</p>
<p class="x_MsoNormal"> </p>
<p class="x_MsoNormal">Thanks,</p>
<p class="x_MsoNormal">Arun.</p>
<p class="x_MsoNormal">.</p>
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<p class="x_MsoNormal"><b>From:</b> Libfabric-users <libfabric-users-bounces@lists.openfabrics.org>
<b>On Behalf Of </b>Matthew Alexandrakis<br>
<b>Sent:</b> Friday, September 06, 2019 6:12 AM<br>
<b>To:</b> libfabric-users@lists.openfabrics.org<br>
<b>Subject:</b> [libfabric-users] IPoIB and verbs provider</p>
</div>
</div>
<p class="x_MsoNormal"> </p>
<div>
<p class="x_MsoNormal"><span style="font-size:12.0pt; color:black">Hello,</span></p>
</div>
<div>
<p class="x_MsoNormal"><span style="font-size:12.0pt; color:black"> </span></p>
</div>
<div>
<p class="x_MsoNormal"><span style="font-size:12.0pt; color:black">We have been configuring ofi for the 2019 Intel Compiler. More specifically, we used the verbs provider (Linux plus Infiniband), which requires an IPoIB - which was not previously required by
OFA. </span></p>
</div>
<div>
<p class="x_MsoNormal"><span style="font-size:12.0pt; color:black"> </span></p>
<div>
<p class="x_MsoNormal"><span style="font-size:12.0pt; color:black">We have several Infiniband islands - though it's possible in the future we could join them together. The easiest way for us to configure IPoIB would be to use an IPv6 Link local address (if
we then joined islands together it would just work). Unfortunately, this doesn't work - it fails with an IP address not found. Furthermore, when we do assign a globally routable IP address, an IP based transport is used, rather than the RDMA that should give
better performance.</span></p>
</div>
<div>
<p class="x_MsoNormal"><span style="font-size:12.0pt; color:black"> </span></p>
</div>
<div>
<p class="x_MsoNormal"><span style="font-size:12.0pt; color:black">Going through the latest release notes, I noticed that IPv6 functionality was mentioned in v1.7.0, under Core: "Enhance IPv6 addressing support for AVs" and Sockets: "Add support for IPv6".
Indeed, Sockets did work with IPv6 enabled. Verbs, on the other hand, defaulted running over Ethernet instead. Is IPv6 meant to work with verbs or is it Sockets-only?</span></p>
</div>
</div>
<div>
<p class="x_MsoNormal"><span style="font-size:12.0pt; color:black"> </span></p>
</div>
<div>
<p class="x_MsoNormal"><span style="font-size:12.0pt; color:black">Both the internal Intel libfabric 1.7.2a-impi, and 1.8.0 were used, with the same results.
</span></p>
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<div>
<p class="x_MsoNormal"><span style="font-size:12.0pt; color:black"> </span></p>
</div>
<div>
<p class="x_MsoNormal"><span style="font-size:12.0pt; color:black">Thanks,</span></p>
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<p class="x_MsoNormal"><span style="font-size:12.0pt; color:black">Matt</span></p>
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<p><span style="font-size:12.0pt; color:black"> </span></p>
<p><span style="color:black">----</span><span style="font-size:12.0pt; color:black"></span></p>
<p><span style="color:black">Matthaios Alexandrakis</span><span style="font-size:12.0pt; color:black"></span></p>
<p><span style="color:black">Research Software Engineer, IT Services</span><span style="font-size:12.0pt; color:black"></span></p>
<p><span style="color:black">Queen Mary University of London</span><span style="font-size:12.0pt; color:black"></span></p>
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