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<p class="MsoNormal"><span style="font-size:12.0pt">Dear All,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt">I'm sorry for the late notice. I just remembered this morning about a previous commitment to attend a play performance at HRA, where two of my granddaughters are participating. Therefore, I won't be able to
lead today's SRO meeting.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt">Here are the detailed points from the agenda that I intended to discuss:<o:p></o:p></span></p>
<ol style="margin-top:0in" start="1" type="a">
<li class="MsoListParagraphCxSpFirst" style="margin-left:0in;mso-add-space:auto;mso-list:l0 level1 lfo1">
<span style="font-family:"Calibri",sans-serif">I'm working on a project to develop a user interface that allows designing, deploying, and configuring complete data-stream processing pipelines. This includes streaming readout and data acquisition capabilities,
transport and distribution, and data-stream processing and visualization. The RTDP UI project will be a desktop application built using JAVA SWING, incorporating some design elements and programming solutions from the CODA JCEdit project. Additionally, we
plan to develop a specialized RTDP ontology language based on RDFS, which will be used for the serialization, communication, and archiving configuration data.<o:p></o:p></span></li><li class="MsoListParagraphCxSpMiddle" style="margin-left:0in;mso-add-space:auto;mso-list:l0 level1 lfo1">
<span style="font-family:"Calibri",sans-serif">Large-scale Deployment and Scaling Test of the CLAS12 Data-Stream Processing Application at NERSC through EJFAT LB at ESnet:<o:p></o:p></span></li><ol style="margin-top:0in" start="1" type="a">
<li class="MsoListParagraphCxSpMiddle" style="margin-left:0in;mso-add-space:auto;mso-list:l0 level2 lfo1">
<span style="font-family:"Calibri",sans-serif">Discussion on the outcomes from the recent 25-node horizontal scaling test.<o:p></o:p></span></li><li class="MsoListParagraphCxSpMiddle" style="margin-left:0in;mso-add-space:auto;mso-list:l0 level2 lfo1">
<span style="font-family:"Calibri",sans-serif">Challenges encountered in requesting additional resources due to the resource limits set for the EJFAT project.<o:p></o:p></span></li><li class="MsoListParagraphCxSpMiddle" style="margin-left:0in;mso-add-space:auto;mso-list:l0 level2 lfo1">
<span style="font-family:"Calibri",sans-serif">Jeng submitted a special resource reservation to reserve 40 nodes for 3 hours on May 20th at 10 AM. The submission was accepted this morning with the flag reservation=100g.<o:p></o:p></span></li></ol>
<li class="MsoListParagraphCxSpMiddle" style="margin-left:0in;mso-add-space:auto;mso-list:l0 level1 lfo1">
<span style="font-family:"Calibri",sans-serif">Ongoing Work to Debug and Commission the Return Path for Processed Events through the Second LB Back to JLAB:<o:p></o:p></span></li><ol style="margin-top:0in" start="1" type="a">
<li class="MsoListParagraphCxSpMiddle" style="margin-left:0in;mso-add-space:auto;mso-list:l0 level2 lfo1">
<span style="font-family:"Calibri",sans-serif">Readiness for local tests of the return path using two load balancer instances on the JLAB EJFAT testbed.<o:p></o:p></span></li><li class="MsoListParagraphCxSpMiddle" style="margin-left:0in;mso-add-space:auto;mso-list:l0 level2 lfo1">
<span style="font-family:"Calibri",sans-serif">Query on whether it is possible to request two local load balancers on the EJFAT testbed that are consistent with the latest LB upgrades and API.<o:p></o:p></span></li><li class="MsoListParagraphCxSpMiddle" style="margin-left:0in;mso-add-space:auto;mso-list:l0 level2 lfo1">
<span style="font-family:"Calibri",sans-serif">Procedure for releasing LB with the open end date ( -until 1970-01-01T00:00:00t00:00).<o:p></o:p></span></li></ol>
<li class="MsoListParagraphCxSpMiddle" style="margin-left:0in;mso-add-space:auto;mso-list:l0 level1 lfo1">
<span style="font-family:"Calibri",sans-serif">Developing a Demo for a Full Streaming Pipeline:<o:p></o:p></span></li><ol style="margin-top:0in" start="1" type="a">
<li class="MsoListParagraphCxSpMiddle" style="margin-left:0in;mso-add-space:auto;mso-list:l0 level2 lfo1">
<span style="font-family:"Calibri",sans-serif">Progress on developing a demo for a full streaming pipeline, starting from streaming readout of the FADC250 through the VTP, passing CTP aggregated time windows to CODA PAGG (primary aggregator) that will create
two data stream connections: one for the critical path to ER (socket-based fast connection), and the second to the ET system that plays the role of the FIFO, presented data stream for ERSAP data-processing pipeline pulling data off the ET FIFO, identifying
FADC hits, applying a simple trigger algorithm and visualizing triggered data in real-time.<o:p></o:p></span></li><li class="MsoListParagraphCxSpMiddle" style="margin-left:0in;mso-add-space:auto;mso-list:l0 level2 lfo1">
<span style="font-family:"Calibri",sans-serif">Request to update EMU to be able to accept multiple output channels with user-programmable prescale factors for two output channels, one critical channel that outputs all the stream events, while the second output
channel outputs some percentage of the stream simultaneously.<o:p></o:p></span></li><li class="MsoListParagraphCxSpMiddle" style="margin-left:0in;mso-add-space:auto;mso-list:l0 level2 lfo1">
<span style="font-family:"Calibri",sans-serif">The current mechanism of the EMU provides multiple output channels, where each channel gets a stream unit in a round-robin fashion—seeking an elegant solution to avoid the stream unit copying required by the previous
request.<o:p></o:p></span></li></ol>
<li class="MsoListParagraphCxSpLast" style="margin-left:0in;mso-add-space:auto;mso-list:l0 level1 lfo1">
<span style="font-family:"Calibri",sans-serif">Additionally, there are reports from RTDP, updates on the EJFAT project, and preparations for the abstract for CHEP24.<o:p></o:p></span></li></ol>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Sincerely,<o:p></o:p></p>
<p class="MsoNormal">-vardan<o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:#212121;mso-ligatures:none">-------------------------------------------------<br>
Vardan H. Gyurjyan, Ph.D.<br>
Staff Scientist<br>
Thomas Jefferson Accelerator Facility<br>
Newport News, VA, 23606<br>
E-mail: </span><span style="font-size:12.0pt;mso-ligatures:none"><a href="mailto:gurjyan@jlab.org" target="_blank" title="mailto:gurjyan@jlab.org"><span style="color:#0078D7">gurjyan@jlab.org</span></a><span style="color:#212121"><br>
757-269-5879 (JLAB)</span> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
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