<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<style type="text/css" style="display:none;"> P {margin-top:0;margin-bottom:0;} </style>
</head>
<body dir="ltr">
<div class="elementToProof" style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 11pt; color: rgb(0, 0, 0);">
>IBM Storage Scale RAID 6.0.1-PTF0-efix4</div>
<div class="elementToProof" style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 11pt; color: rgb(0, 0, 0);">
>I am don't really believe 400Gbps is actually low bandwidth so it's a<br>
>"bug" somewhere IMHO</div>
<div class="elementToProof" style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 11pt; color: rgb(0, 0, 0);">
<br>
</div>
<div class="elementToProof" style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 11pt; color: rgb(0, 0, 0);">
Correct, the bandwidth calculation did not take the GNR data structures into account. </div>
<div class="elementToProof" style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 11pt; color: rgb(0, 0, 0);">
I just checked: the defect is fixed in the 6.0.2 release (Planned for 4Q26)</div>
<div class="elementToProof" style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 11pt; color: rgb(0, 0, 0);">
</div>
<div class="elementToProof" style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 11pt; color: rgb(0, 0, 0);">
In the meantime, use "mmhealth event hide" to hide the tip. </div>
<div id="Signature" class="elementToProof">
<div class="elementToProof" style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 11pt; color: rgb(0, 0, 0);">
<br>
</div>
<div class="elementToProof" style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 11pt; color: rgb(0, 0, 0);">
best regards<br>
<br>
Mathias Dietz</div>
<div class="elementToProof" style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 11pt; color: rgb(0, 0, 0);">
<br>
</div>
<div class="elementToProof" style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 11pt; color: rgb(0, 0, 0);">
Storage Scale RAS Architect <br>
<br>
IBM Deutschland Research & Development GmbH</div>
<div class="elementToProof" style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 11pt; color: rgb(0, 0, 0);">
Vorsitzender des Aufsichtsrats: Wolfgang Wendt</div>
<div class="elementToProof" style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 11pt; color: rgb(0, 0, 0);">
Geschftsfhrung: David Faller</div>
<div class="elementToProof" style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 11pt; color: rgb(0, 0, 0);">
Sitz der Gesellschaft: Bblingen / Registergericht: Amtsgericht Stuttgart, HRB 243294</div>
</div>
<div><br>
</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<hr style="display: inline-block; width: 98%;">
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<b>From:</b> Jonathan Buzzard <jonathan.buzzard@strath.ac.uk><br>
<b>Sent:</b> Tuesday, August 25, 2026 6:01 PM<br>
<b>To:</b> Mathias Dietz <MDIETZ@de.ibm.com>; gpfsug-discuss <gpfsug-discuss@gpfsug.org><br>
<b>Subject:</b> [EXTERNAL] Re: [gpfsug-discuss] Bandwidth low </div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div style="font-size: 11pt;">On 25/08/2026 15:56, Mathias Dietz wrote:<br>
<br>
> Hi Jonathan,<br>
><br>
> I assume this is using GNR, right ? which Scale version are you using ?<br>
> Background: there was a known issue with the bandwidth_low event when<br>
> GNR is used.<br>
><br>
<br>
It's DSS-G version 5.4a (no Omnipath to make 5.4b worth the effort)<br>
which is according to the release notes<br>
<br>
IBM Storage Scale RAID 6.0.1-PTF0-efix4<br>
<br>
Which is newer than the versions mentioned when I was investigating,<br>
which are were all 5.x something.<br>
<br>
I am don't really believe 400Gbps is actually low bandwidth so it's a<br>
"bug" somewhere IMHO.<br>
<br>
<br>
JAB.<br>
<br>
--<br>
Jonathan A. Buzzard Tel: +44141-5483420<br>
HPC System Administrator, ARCHIE-WeSt.<br>
University of Strathclyde, John Anderson Building, Glasgow. G4 0NG<br>
</div>
</body>
</html>