{"id":886,"date":"2026-04-08T15:25:30","date_gmt":"2026-04-08T15:25:30","guid":{"rendered":"https:\/\/ppc.mit.edu\/t2\/?p=886"},"modified":"2026-04-08T16:29:26","modified_gmt":"2026-04-08T16:29:26","slug":"mit-tier-2-report-apr-8-2026","status":"publish","type":"post","link":"https:\/\/ppc.mit.edu\/t2\/?p=886","title":{"rendered":"MIT Tier-2 Report &#8211; Apr. 8 2026"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">SiteReadiness: 100.0%<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">SAM tests: 98.5%<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Significant portion of cores were taken for Tier0 activities. It looks like reading data remotely from CERN like it is done now under-utilizes CPUs and puts pressure on XrooTD to the point that the servers start struggling.<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"353\" data-id=\"880\" src=\"https:\/\/ppc.mit.edu\/t2\/wp-content\/uploads\/2026\/04\/Screenshot-2026-04-08-at-8.26.22-AM-1024x353.png\" alt=\"\" class=\"wp-image-880\" srcset=\"https:\/\/ppc.mit.edu\/t2\/wp-content\/uploads\/2026\/04\/Screenshot-2026-04-08-at-8.26.22-AM-1024x353.png 1024w, https:\/\/ppc.mit.edu\/t2\/wp-content\/uploads\/2026\/04\/Screenshot-2026-04-08-at-8.26.22-AM-300x103.png 300w, https:\/\/ppc.mit.edu\/t2\/wp-content\/uploads\/2026\/04\/Screenshot-2026-04-08-at-8.26.22-AM-768x264.png 768w, https:\/\/ppc.mit.edu\/t2\/wp-content\/uploads\/2026\/04\/Screenshot-2026-04-08-at-8.26.22-AM.png 1388w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"347\" data-id=\"882\" src=\"https:\/\/ppc.mit.edu\/t2\/wp-content\/uploads\/2026\/04\/Screenshot-2026-04-08-at-8.46.25-AM-1024x347.png\" alt=\"\" class=\"wp-image-882\" srcset=\"https:\/\/ppc.mit.edu\/t2\/wp-content\/uploads\/2026\/04\/Screenshot-2026-04-08-at-8.46.25-AM-1024x347.png 1024w, https:\/\/ppc.mit.edu\/t2\/wp-content\/uploads\/2026\/04\/Screenshot-2026-04-08-at-8.46.25-AM-300x102.png 300w, https:\/\/ppc.mit.edu\/t2\/wp-content\/uploads\/2026\/04\/Screenshot-2026-04-08-at-8.46.25-AM-768x260.png 768w, https:\/\/ppc.mit.edu\/t2\/wp-content\/uploads\/2026\/04\/Screenshot-2026-04-08-at-8.46.25-AM.png 1427w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/figure>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-2 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"398\" data-id=\"883\" src=\"https:\/\/ppc.mit.edu\/t2\/wp-content\/uploads\/2026\/04\/Screenshot-2026-04-08-at-8.37.39-AM-1024x398.png\" alt=\"\" class=\"wp-image-883\" srcset=\"https:\/\/ppc.mit.edu\/t2\/wp-content\/uploads\/2026\/04\/Screenshot-2026-04-08-at-8.37.39-AM-1024x398.png 1024w, https:\/\/ppc.mit.edu\/t2\/wp-content\/uploads\/2026\/04\/Screenshot-2026-04-08-at-8.37.39-AM-300x117.png 300w, https:\/\/ppc.mit.edu\/t2\/wp-content\/uploads\/2026\/04\/Screenshot-2026-04-08-at-8.37.39-AM-768x299.png 768w, https:\/\/ppc.mit.edu\/t2\/wp-content\/uploads\/2026\/04\/Screenshot-2026-04-08-at-8.37.39-AM.png 1047w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"397\" data-id=\"884\" src=\"https:\/\/ppc.mit.edu\/t2\/wp-content\/uploads\/2026\/04\/Screenshot-2026-04-08-at-8.37.58-AM-1024x397.png\" alt=\"\" class=\"wp-image-884\" srcset=\"https:\/\/ppc.mit.edu\/t2\/wp-content\/uploads\/2026\/04\/Screenshot-2026-04-08-at-8.37.58-AM-1024x397.png 1024w, https:\/\/ppc.mit.edu\/t2\/wp-content\/uploads\/2026\/04\/Screenshot-2026-04-08-at-8.37.58-AM-300x116.png 300w, https:\/\/ppc.mit.edu\/t2\/wp-content\/uploads\/2026\/04\/Screenshot-2026-04-08-at-8.37.58-AM-768x298.png 768w, https:\/\/ppc.mit.edu\/t2\/wp-content\/uploads\/2026\/04\/Screenshot-2026-04-08-at-8.37.58-AM.png 1044w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/figure>\n","protected":false},"excerpt":{"rendered":"<p>SiteReadiness: 100.0% SAM tests: 98.5% Significant portion of cores were taken for Tier0 activities. It looks like reading data remotely from CERN like it is done now under-utilizes CPUs and puts pressure on XrooTD to the point that the servers start struggling.<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[12],"class_list":["post-886","post","type-post","status-publish","format-standard","hentry","category-report","tag-weekly"],"_links":{"self":[{"href":"https:\/\/ppc.mit.edu\/t2\/index.php?rest_route=\/wp\/v2\/posts\/886","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ppc.mit.edu\/t2\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ppc.mit.edu\/t2\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ppc.mit.edu\/t2\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ppc.mit.edu\/t2\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=886"}],"version-history":[{"count":3,"href":"https:\/\/ppc.mit.edu\/t2\/index.php?rest_route=\/wp\/v2\/posts\/886\/revisions"}],"predecessor-version":[{"id":892,"href":"https:\/\/ppc.mit.edu\/t2\/index.php?rest_route=\/wp\/v2\/posts\/886\/revisions\/892"}],"wp:attachment":[{"href":"https:\/\/ppc.mit.edu\/t2\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=886"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ppc.mit.edu\/t2\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=886"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ppc.mit.edu\/t2\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=886"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}