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You can have larger RPCs, but those get split up into 1M LNet operations. Lnet-selftest works with LNet messages and not RPCs.
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<div class="">Doug</div>
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<div class="">On Feb 5, 2017, at 3:07 PM, Patrick Farrell <<a href="mailto:paf@cray.com" class="">paf@cray.com</a>> wrote:</div>
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<div style="margin-top: 0px; margin-bottom: 0px;" class="">Doug,</div>
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<div style="margin-top: 0px; margin-bottom: 0px;" class="">It seems to me that's not true any more, with larger RPC sizes available. Is there some reason that's not true?</div>
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<div style="margin-top: 0px; margin-bottom: 0px;" class="">- Patrick</div>
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<div id="x_divRplyFwdMsg" dir="ltr" class=""><font face="Calibri, sans-serif" style="font-size: 11pt;" class=""><b class="">From:</b><span class="Apple-converted-space"> </span>lustre-discuss <<a href="mailto:lustre-discuss-bounces@lists.lustre.org" class="">lustre-discuss-bounces@lists.lustre.org</a>>
on behalf of Oucharek, Doug S <<a href="mailto:doug.s.oucharek@intel.com" class="">doug.s.oucharek@intel.com</a>><br class="">
<b class="">Sent:</b><span class="Apple-converted-space"> </span>Sunday, February 5, 2017 3:18:10 PM<br class="">
<b class="">To:</b><span class="Apple-converted-space"> </span>Jeff Johnson<br class="">
<b class="">Cc:</b><span class="Apple-converted-space"> </span><a href="mailto:lustre-discuss@lists.lustre.org" class="">lustre-discuss@lists.lustre.org</a><br class="">
<b class="">Subject:</b><span class="Apple-converted-space"> </span>Re: [lustre-discuss] LNET Self-test</font>
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<div class="PlainText">Yes, you can bump your concurrency. Size caps out at 1M because that is how LNet is setup to work. Going over 1M size would result in an unrealistic Lustre test.<br class="">
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Doug<br class="">
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> On Feb 5, 2017, at 11:55 AM, Jeff Johnson <<a href="mailto:jeff.johnson@aeoncomputing.com" class="">jeff.johnson@aeoncomputing.com</a>> wrote:<br class="">
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> Without seeing your entire command it is hard to say for sure but I would make sure your concurrency option is set to 8 for starters.<span class="Apple-converted-space"> </span><br class="">
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> --Jeff<br class="">
><span class="Apple-converted-space"> </span><br class="">
> Sent from my iPhone<br class="">
><span class="Apple-converted-space"> </span><br class="">
>> On Feb 5, 2017, at 11:30, Jon Tegner <<a href="mailto:tegner@foi.se" class="">tegner@foi.se</a>> wrote:<br class="">
>><span class="Apple-converted-space"> </span><br class="">
>> Hi,<br class="">
>><span class="Apple-converted-space"> </span><br class="">
>> I'm trying to use lnet selftest to evaluate network performance on a test setup (only two machines). Using e.g., iperf or Netpipe I've managed to demonstrate the bandwidth of the underlying 10 Gbits/s network (and typically you reach the expected bandwidth
as the packet size increases).<br class="">
>><span class="Apple-converted-space"> </span><br class="">
>> How can I do the same using lnet selftest (i.e., verifying the bandwidth of the underlying hardware)? My initial thought was to increase the I/O size, but it seems the maximum size one can use is "--size=1M".<br class="">
>><span class="Apple-converted-space"> </span><br class="">
>> Thanks,<br class="">
>><span class="Apple-converted-space"> </span><br class="">
>> /jon<br class="">
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