<!DOCTYPE html>
<html xmlns="https://www.w3.org/1999/xhtml" xmlns:o="urn:schemas-microsoft-com:office:office">
<head>
<title>Leonardo: Updated QoS Limits</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="format-detection" content="address=no">
<meta name="format-detection" content="telephone=no">
<meta name="format-detection" content="email=no">
<meta name="x-apple-disable-message-reformatting">
<!--[if gte mso 9]><xml><o:OfficeDocumentSettings><o:AllowPNG/><o:PixelsPerInch>96</o:PixelsPerInch></o:OfficeDocumentSettings></xml><![endif]-->
<style type="text/css">
#outlook a{padding:0;}
.ReadMsgBody{width:100%;} .ExternalClass{width:100%;}
.ExternalClass, .ExternalClass p, .ExternalClass span, .ExternalClass font, .ExternalClass td, .ExternalClass div {line-height: 100%;}
body { margin: 0; padding: 0; height: 100%!important; width: 100%!important; -webkit-text-size-adjust: 100%; -ms-text-size-adjust: 100%; mso-line-height-rule: exactly;}
table,td { border-collapse: collapse !important; mso-table-lspace: 0pt; mso-table-rspace: 0pt;}
img { border: 0; height: auto; line-height: 100%; outline: none; text-decoration: none; max-width: 100%!important; -ms-interpolation-mode: bicubic;}
img.aligncenter { display: block; margin: 0 auto;}
/* TinyMCE of WP */
.alignleft { float: left; margin: 7px 15px 7px 0px; }
.alignright { float: right; margin: 7px 0px 7px 15px; }
.aligncenter { display: block; margin-left: auto; margin-right: auto; }
.screen-reader-text { display: none }
figcaption { display: block; }
@media screen and (max-width: 525px) {
.wrapper { padding-left: px; padding-right: px; padding-bottom: px; padding-top: px;}
.m-d-block {display: block}
.m-d-none {display: none; visibility: hidden; color: transparent;}
.m-pb-1 { padding-bottom: 16px!important; }
.p-0 { padding: 0 !important; }
.pt-1, .padding-top-15 { padding-top: 15px!important; }
.pb-1, .padding-bottom-15 { padding-bottom: 15px!important; }
.dh { display: hidden }
.fs-90 {
font-size: 90%;
}
.responsive { width:100%!important; }
table.responsive { width:100%!important; float: none; display: table; padding-left: 0; padding-right: 0; }
table[class="responsive"] { width:100%!important; float: none; display: table; padding-left: 0; padding-right: 0; }
img { max-width: 100%!important }
img[class="responsive"] { max-width: 100%!important; }
/* "width: auto" restores the natural dimensions forced with attributes for Outlook */
.fluid { max-width: 100%!important; width: auto; }
img[class="fluid"] { max-width: 100%!important; width: auto; }
.block { display: block; }
td[class="responsive"]{width:100%!important; max-width: 100%!important; display: block; padding-left: 0 !important; padding-right: 0!important; float: none; }
td.responsive { width:100%!important; max-width: 100%!important; display: block; padding-left: 0 !important; padding-right: 0!important; float: none; }
td[class="section-padding-bottom-image"]{
padding: 50px 15px 0 15px !important;
}
/* For grids */
.max-width-100 { max-width: 100%!important; }
/* Obsolete */
.tnp-grid-column {
max-width: 100%!important;
}
}
/* Custom CSS */
/* End Custom CSS */
/* Last posts */
@media (max-width: 525px) {
.posts-1-column {
width: 100%!important;
}
.posts-1-image {
width: 100%!important;
display: block;
}
}
/* Html */
.html-td-global p {
font-family: Helvetica, Arial, sans-serif;
font-size: 16px;
}
/* Text */
.text p {
margin: 0 0 15px 0 !important;
}
.text a {
color: #007bff;
text-decoration: none;
}
</style>
</head>
<body style="margin: 0; padding: 0; line-height: normal; word-spacing: normal;" dir="ltr">
<table cellpadding='0' cellspacing='0' border='0' width='100%' role='presentation'>
<tr>
<td bgcolor='#ffffff' valign='top' class='wrapper'><!-- tnp --><table role="presentation" border="0" cellpadding="0" cellspacing="0" align="center" width="100%" style="border-collapse: collapse; width: 100%;" class="tnpc-row tnpc-row-block ui-sortable-handle" data-id="posts">
<tbody><tr><td align="center" style="padding: 0;" class="edit-block">
<!--[if mso | IE]><table role="presentation" border="0" cellpadding="0" align="center" cellspacing="0" width="600"><tr><td width="600" style="vertical-align:top;width:600px;"><![endif]--><table role="presentation" type="options" class="tnpc-block-content" border="0" cellpadding="0" align="center" cellspacing="0" width="100%" style="border-collapse: separate !important; width: 100%!important; max-width: 600px!important">
<tbody><tr><td align="center" style="text-align: center; line-height: normal !important; letter-spacing: normal; mso-line-height-rule: exactly; outline: none; padding: 15px 15px 15px 15px;background-color: #ffffff;" bgcolor="#ffffff"><table border="0" cellpadding="0" align="center" cellspacing="0" width="100%" class="responsive">
<tbody><tr>
<td style="padding-bottom: 20px; padding-left: 0px; padding-right: 0px;">
<a href="https://www.hpc.cineca.it/wp-admin/admin-ajax.php?action=tnptr&nltr=NDk2Ozk7aHR0cHM6Ly93d3cuaHBjLmNpbmVjYS5pdC9uZXdzbGV0dGVyL2xlb25hcmRvLXVwZGF0ZWQtbGltaXRzLW9mLXFvc19kYmctYW5kLWxyZF9hbGxfc2VyaWFsLXFvcy87OzBmNDE1MTkyNTgxMjI2NTY3NDJkNGNhNzFkNGI1OWVj" style="font-size: 32px;font-family: Verdana, Geneva, sans-serif;font-weight: normal;color: #222222; line-height: normal; margin: 0; text-decoration: none;" class="tnpc-inline-editable" data-type="title" data-id="24327" dir="ltr" role="heading" aria-level="2">Leonardo: Updated Limits of *qos_dbg and lrd_all_serial QoS</a> </td>
</tr>
<tr>
<td style="font-size: 14px;font-family: Verdana, Geneva, sans-serif;font-weight: normal;color: #222222; line-height: normal!important; padding-bottom: 10px; text-align: center; font-style: italic;">
28 November 2025 </td>
</tr>
<tr>
<td align="left" dir="ltr" style="font-size: 16px;font-family: Verdana, Geneva, sans-serif;font-weight: normal;color: #222222; padding-left: 0px; padding-right: 0px; line-height: 1.5;">
<!-- wp:paragraph -->
<p style="font-size: 16px;font-family: Verdana, Geneva, sans-serif;font-weight: normal;color: #222222; line-height: 1.5 !important;">Dear Users,</p>
<!-- /wp:paragraph -->
<!-- wp:paragraph -->
<p style="font-size: 16px;font-family: Verdana, Geneva, sans-serif;font-weight: normal;color: #222222; line-height: 1.5 !important;">We are implementing new usage limitations on the "boost_qos_dbg", "dcgp_qos_dbg", and "lrd_all_serial" Quality of Service (QoS) tiers, effective immediately. These changes are necessary to address instances of misuse that have placed stress on the job scheduler and caused delays in the start times of large jobs.</p>
<!-- /wp:paragraph -->
<!-- wp:paragraph -->
<p style="font-size: 16px;font-family: Verdana, Geneva, sans-serif;font-weight: normal;color: #222222; line-height: 1.5 !important;">The intended use cases and new limits are detailed below:</p>
<!-- /wp:paragraph -->
<!-- wp:list -->
<ul class="wp-block-list"><!-- wp:list-item -->
<li style="font-size: 16px;font-family: Verdana, Geneva, sans-serif;font-weight: normal;color: #222222; line-height: normal!important;"><strong>"<em>boost_qos_dbg</em>" and "<em>dcgp_qos_dbg</em>" (Rapid Debugging)</strong>: These tiers are intended for quick, interactive debugging. The following restrictions have been applied:<!-- wp:list -->
<ul class="wp-block-list"><!-- wp:list-item -->
<li style="font-size: 16px;font-family: Verdana, Geneva, sans-serif;font-weight: normal;color: #222222; line-height: normal!important;">Maximum running and pending jobs per user reduced to one.</li>
<!-- /wp:list-item -->
<!-- wp:list-item -->
<li style="font-size: 16px;font-family: Verdana, Geneva, sans-serif;font-weight: normal;color: #222222; line-height: normal!important;">Available only on approximately 4% of the total cluster compute nodes.</li>
<!-- /wp:list-item -->
<!-- wp:list-item -->
<li style="font-size: 16px;font-family: Verdana, Geneva, sans-serif;font-weight: normal;color: #222222; line-height: normal!important;">Maximum nodes per job: 4 for "boost_qos_dbg" and 2 for "dcgp_qos_dbg".</li>
<!-- /wp:list-item --></ul>
<!-- /wp:list --></li>
<!-- /wp:list-item -->
<!-- wp:list-item -->
<li style="font-size: 16px;font-family: Verdana, Geneva, sans-serif;font-weight: normal;color: #222222; line-height: normal!important;"><strong>"<em>lrd_all_serial</em>" (Serial Workflows)</strong>: This tier is for serial workflows that, exceeding the standard 10-minute CPU time limit, cannot run on conventional login nodes. The following restrictions have been applied:<!-- wp:list -->
<ul class="wp-block-list"><!-- wp:list-item -->
<li style="font-size: 16px;font-family: Verdana, Geneva, sans-serif;font-weight: normal;color: #222222; line-height: normal!important;">Maximum nodes per job set to one.</li>
<!-- /wp:list-item -->
<!-- wp:list-item -->
<li style="font-size: 16px;font-family: Verdana, Geneva, sans-serif;font-weight: normal;color: #222222; line-height: normal!important;">Maximum running jobs per user reduced to two.</li>
<!-- /wp:list-item -->
<!-- wp:list-item -->
<li style="font-size: 16px;font-family: Verdana, Geneva, sans-serif;font-weight: normal;color: #222222; line-height: normal!important;">Maximum pending jobs per user reduced to ten.</li>
<!-- /wp:list-item --></ul>
<!-- /wp:list --></li>
<!-- /wp:list-item --></ul>
<!-- /wp:list -->
<!-- wp:paragraph -->
<p style="font-size: 16px;font-family: Verdana, Geneva, sans-serif;font-weight: normal;color: #222222; line-height: 1.5 !important;">We appreciate your understanding, and hope this will improve your productivity by ensuring more predictable and efficient resource access for all users.</p>
<!-- /wp:paragraph -->
<!-- wp:paragraph -->
<p style="font-size: 16px;font-family: Verdana, Geneva, sans-serif;font-weight: normal;color: #222222; line-height: 1.5 !important;">Best regards,<br>HPC User Support @ CINECA</p>
<!-- /wp:paragraph --> </td>
</tr>
</tbody></table>
<br><br></td></tr></tbody></table><!--[if mso | IE]></td></tr></table><![endif]--></td></tr></tbody></table><table role="presentation" border="0" cellpadding="0" cellspacing="0" align="center" width="100%" style="border-collapse: collapse; width: 100%;" class="tnpc-row tnpc-row-block ui-sortable-handle" data-id="text">
<tbody><tr><td align="center" style="padding: 0;" class="edit-block">
<table role="presentation" border="0" cellpadding="0" cellspacing="0" width="100%" style="border-collapse: separate !important; width: 100%!important;">
<tbody><tr><td align="center" width="100%" style="width: 100%; background-color: #ffffff;" bgcolor="#ffffff"><!--[if mso | IE]><table role="presentation" border="0" cellpadding="0" align="center" cellspacing="0" width="600"><tr><td width="600" style="vertical-align:top;width:600px;"><![endif]--><table role="presentation" type="options" class="tnpc-block-content" border="0" cellpadding="0" align="center" cellspacing="0" width="100%" style="border-collapse: separate !important; width: 100%!important; max-width: 600px!important">
<tbody><tr><td align="center" style="text-align: center; line-height: normal !important; letter-spacing: normal; mso-line-height-rule: exactly; outline: none; padding: 0px 10px 0px 10px;" bgcolor=""><table width="100%" style="width: 100%!important" border="0" cellpadding="0" cellspacing="0">
<tbody><tr>
<td width="100%" valign="top" align="left" class="text" style="mso-line-height-rule: exactly; font-size: 16px;font-family: Verdana, Geneva, sans-serif;font-weight: normal;color: #222222; line-height: 1.5;">
<p style="text-align: center"><span style="font-family: verdana, geneva, sans-serif"><span style="font-size: 12px">To unsubscribe to HPC-News send a mail to <a href="mailto:hpc-news-userdb-leave@list.cineca.it" target="_blank" rel="noopener">hpc-news-userdb-leave@list.cineca.it</a>.<br></span><span style="font-size: 12px">For more information see documentation at <a href="https://www.hpc.cineca.it/wp-admin/admin-ajax.php?action=tnptr&nltr=NDk2Ozk7aHR0cHM6Ly93d3cuaHBjLmNpbmVjYS5pdC91c2VyLXN1cHBvcnQvZ2V0LWluLXRvdWNoLzs7MmI2ZDZhZTQwM2Q3ZGFjZWI3Y2E2MjE5NmRlNmY5NmY%3D" target="_blank" rel="noopener">https://www.hpc.cineca.it/user-support/get-in-touch/</a></span></span></p> </td>
</tr>
</tbody></table></td></tr></tbody></table><!--[if mso | IE]></td></tr></table><![endif]--></td></tr></tbody></table></td></tr></tbody></table>
<!-- /tnp -->
</td>
</tr>
</table>
<img width="1" height="1" alt="" src="https://www.hpc.cineca.it/wp-admin/admin-ajax.php?action=tnptr¬i=NDk2Ozk7ZTk4Mjk0NGI2NWM3MzBjNTVjMWMwYjYxNDRhYmJiMjg%3D"/></body>
</html>