<html><head><meta http-equiv="Content-Type" content="text/html charset=windows-1252"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><div><br></div><div>Hi All,</div><div><br></div><div> Here are the minutes from today’s Hall-D Online meeting:</div><div><br></div><div><a href="https://halldweb.jlab.org/wiki/index.php/OWG_Meeting_5-May-2016">https://halldweb.jlab.org/wiki/index.php/OWG_Meeting_5-May-2016</a></div><div><br></div><div>Regard,</div><div>-David</div><div><br></div><div><h1 style="font-weight: normal; margin: 0px 0px 0.6em; overflow: hidden; padding-top: 0.5em; padding-bottom: 0.17em; border-bottom-width: 1px; border-bottom-style: solid; border-bottom-color: rgb(170, 170, 170); font-size: 23.876px; font-family: sans-serif; line-height: 19.05px; widows: 1; background-image: none; background-color: rgb(255, 255, 255); background-position: initial initial; background-repeat: initial initial;"><span class="mw-headline" id="Minutes">Minutes</span><span class="mw-editsection" style="-webkit-user-select: none; font-size: small; margin-left: 1em; vertical-align: baseline; line-height: 1em; display: inline-block;"><span class="mw-editsection-bracket">[</span><a href="https://halldweb.jlab.org/wiki/index.php?title=OWG_Meeting_5-May-2016&action=edit§ion=5" title="Edit section: Minutes" style="text-decoration: none; color: rgb(90, 54, 150); background: none;">edit</a><span class="mw-editsection-bracket">]</span></span></h1><div style="margin: 0.4em 0px 0.5em; line-height: 19.05px; font-family: sans-serif; font-size: 12.7px; widows: 1; background-color: rgb(255, 255, 255);">Attendees: David L., Sergey F., Paul L., Hovanes E., Curtis M., Sean D., Beni Z., Simon T., Eugene C.</div><h2 style="font-weight: normal; margin: 0px 0px 0.6em; overflow: hidden; padding-top: 0.5em; padding-bottom: 0.17em; border-bottom-width: 1px; border-bottom-style: solid; border-bottom-color: rgb(170, 170, 170); font-size: 19.05px; font-family: sans-serif; line-height: 19.05px; widows: 1; background-image: none; background-color: rgb(255, 255, 255); background-position: initial initial; background-repeat: initial initial;"><span class="mw-headline" id="RAID_Disk_Upgrade">RAID Disk Upgrade</span><span class="mw-editsection" style="-webkit-user-select: none; font-size: small; margin-left: 1em; vertical-align: baseline; line-height: 1em; display: inline-block;"><span class="mw-editsection-bracket">[</span><a href="https://halldweb.jlab.org/wiki/index.php?title=OWG_Meeting_5-May-2016&action=edit§ion=6" title="Edit section: RAID Disk Upgrade" style="text-decoration: none; color: rgb(90, 54, 150); background: none;">edit</a><span class="mw-editsection-bracket">]</span></span></h2><ul style="line-height: 19.05px; list-style-type: square; margin: 0.3em 0px 0px 1.6em; padding: 0px; list-style-image: url(data:image/gif;base64,R0lGODlhBQANAIAAAGOMnP///yH5BAEAAAEALAAAAAAFAA0AAAIJjI+pu+APo4SpADs=); font-family: sans-serif; font-size: 12.7px; widows: 1; background-color: rgb(255, 255, 255);"><li style="margin-bottom: 0.1em;">David summarized some points of a conversation he had with Chip and Sandy the day before<ul style="line-height: 1.5em; list-style-type: square; margin: 0.3em 0px 0px 1.6em; padding: 0px; list-style-image: url("data:image/gif;base64,R0lGODlhBQANAIAAAGOMnP///yH5BAEAAAEALAAAAAAFAA0AAAIJjI+pu+APo4SpADs=");"><li style="margin-bottom: 0.1em;">With our current 800MB/s data rate, we no longer have a 72 hr buffer of disk space</li><li style="margin-bottom: 0.1em;">Our existing servers may be coming to the end of their warranty period</li></ul></li><li style="margin-bottom: 0.1em;">Currently, we always keep some data on RAID disks and so only tend to free up 50TB when a disk is cleared out</li><li style="margin-bottom: 0.1em;">This makes our effective current buffer ~100TB = 34 hrs of buffer</li><li style="margin-bottom: 0.1em;">Existing drives in gluonraid1 and gluonraid2 are 3TB. Replacing them with 6TB drives would approach cost of new server with new drives</li><li style="margin-bottom: 0.1em;">New server similar to our existing one but with 6TB drives would be an estimated $14k</li><li style="margin-bottom: 0.1em;">Computer Center has started using 3rd party company service contracts for hardware to replace expiring warranties<ul style="line-height: 1.5em; list-style-type: square; margin: 0.3em 0px 0px 1.6em; padding: 0px; list-style-image: url("data:image/gif;base64,R0lGODlhBQANAIAAAGOMnP///yH5BAEAAAEALAAAAAAFAA0AAAIJjI+pu+APo4SpADs=");"><li style="margin-bottom: 0.1em;">Our existing raid servers will hit 3 years this Sept. and we should look at setting up such a service contract from ~$100/month</li><li style="margin-bottom: 0.1em;">Paul is looking into identifying RAM for us to purchase to increase from 32GB to 64GB in gluonraid1 and gluonraid2</li></ul></li><li style="margin-bottom: 0.1em;">Proposal for 3rd RAID as small buffer was presented<ul style="line-height: 1.5em; list-style-type: square; margin: 0.3em 0px 0px 1.6em; padding: 0px; list-style-image: url("data:image/gif;base64,R0lGODlhBQANAIAAAGOMnP///yH5BAEAAAEALAAAAAAFAA0AAAIJjI+pu+APo4SpADs=");"><li style="margin-bottom: 0.1em;">Addresses issue of stopping and restarting DAQ so ER can be run on different node when switching disks</li><li style="margin-bottom: 0.1em;">Can limit access to disk from other users while DAQ is running, reducing potential conflicts</li><li style="margin-bottom: 0.1em;">We decided to explore such a scenario using the existing 2 RAIDs and the 3rd RAID described above.</li></ul></li></ul><h2 style="font-weight: normal; margin: 0px 0px 0.6em; overflow: hidden; padding-top: 0.5em; padding-bottom: 0.17em; border-bottom-width: 1px; border-bottom-style: solid; border-bottom-color: rgb(170, 170, 170); font-size: 19.05px; font-family: sans-serif; line-height: 19.05px; widows: 1; background-image: none; background-color: rgb(255, 255, 255); background-position: initial initial; background-repeat: initial initial;"><span class="mw-headline" id="Announcements">Announcements</span><span class="mw-editsection" style="-webkit-user-select: none; font-size: small; margin-left: 1em; vertical-align: baseline; line-height: 1em; display: inline-block;"><span class="mw-editsection-bracket">[</span><a href="https://halldweb.jlab.org/wiki/index.php?title=OWG_Meeting_5-May-2016&action=edit§ion=7" title="Edit section: Announcements" style="text-decoration: none; color: rgb(90, 54, 150); background: none;">edit</a><span class="mw-editsection-bracket">]</span></span></h2><ul style="line-height: 19.05px; list-style-type: square; margin: 0.3em 0px 0px 1.6em; padding: 0px; list-style-image: url(data:image/gif;base64,R0lGODlhBQANAIAAAGOMnP///yH5BAEAAAEALAAAAAAFAA0AAAIJjI+pu+APo4SpADs=); font-family: sans-serif; font-size: 12.7px; widows: 1; background-color: rgb(255, 255, 255);"><li style="margin-bottom: 0.1em;">We will change the meeting time to 2pm, but keep it on Wednesdays<ul style="line-height: 1.5em; list-style-type: square; margin: 0.3em 0px 0px 1.6em; padding: 0px; list-style-image: url("data:image/gif;base64,R0lGODlhBQANAIAAAGOMnP///yH5BAEAAAEALAAAAAAFAA0AAAIJjI+pu+APo4SpADs=");"><li style="margin-bottom: 0.1em;">Hovanes noted that this can interfere with the Wed. afternoon Accelerator meeting</li><li style="margin-bottom: 0.1em;">We decided to keep it on Wed. since we don't usually have Online Meetings during the run anyway due to daily RC meetings.</li></ul></li><li style="margin-bottom: 0.1em;">Paul will likely do the gluon01 downgrade next week. We told him there was no time pressure since people will be occupied with the Collaboration Meeting/Workshop</li></ul><h2 style="font-weight: normal; margin: 0px 0px 0.6em; overflow: hidden; padding-top: 0.5em; padding-bottom: 0.17em; border-bottom-width: 1px; border-bottom-style: solid; border-bottom-color: rgb(170, 170, 170); font-size: 19.05px; font-family: sans-serif; line-height: 19.05px; widows: 1; background-image: none; background-color: rgb(255, 255, 255); background-position: initial initial; background-repeat: initial initial;"><span class="mw-headline" id="Collaboration_Meeting_Agenda">Collaboration Meeting Agenda</span><span class="mw-editsection" style="-webkit-user-select: none; font-size: small; margin-left: 1em; vertical-align: baseline; line-height: 1em; display: inline-block;"><span class="mw-editsection-bracket">[</span><a href="https://halldweb.jlab.org/wiki/index.php?title=OWG_Meeting_5-May-2016&action=edit§ion=8" title="Edit section: Collaboration Meeting Agenda" style="text-decoration: none; color: rgb(90, 54, 150); background: none;">edit</a><span class="mw-editsection-bracket">]</span></span></h2><ul style="line-height: 19.05px; list-style-type: square; margin: 0.3em 0px 0px 1.6em; padding: 0px; list-style-image: url(data:image/gif;base64,R0lGODlhBQANAIAAAGOMnP///yH5BAEAAAEALAAAAAAFAA0AAAIJjI+pu+APo4SpADs=); font-family: sans-serif; font-size: 12.7px; widows: 1; background-color: rgb(255, 255, 255);"><li style="margin-bottom: 0.1em;">Agenda is now frozen. Naomi will speak for precisely 10 minutes. No more, no less.</li></ul><h2 style="font-weight: normal; margin: 0px 0px 0.6em; overflow: hidden; padding-top: 0.5em; padding-bottom: 0.17em; border-bottom-width: 1px; border-bottom-style: solid; border-bottom-color: rgb(170, 170, 170); font-size: 19.05px; font-family: sans-serif; line-height: 19.05px; widows: 1; background-image: none; background-color: rgb(255, 255, 255); background-position: initial initial; background-repeat: initial initial;"><span class="mw-headline" id="Compiler_Upgrade">Compiler Upgrade</span><span class="mw-editsection" style="-webkit-user-select: none; font-size: small; margin-left: 1em; vertical-align: baseline; line-height: 1em; display: inline-block;"><span class="mw-editsection-bracket">[</span><a href="https://halldweb.jlab.org/wiki/index.php?title=OWG_Meeting_5-May-2016&action=edit§ion=9" title="Edit section: Compiler Upgrade" style="text-decoration: none; color: rgb(90, 54, 150); background: none;">edit</a><span class="mw-editsection-bracket">]</span></span></h2><ul style="line-height: 19.05px; list-style-type: square; margin: 0.3em 0px 0px 1.6em; padding: 0px; list-style-image: url(data:image/gif;base64,R0lGODlhBQANAIAAAGOMnP///yH5BAEAAAEALAAAAAAFAA0AAAIJjI+pu+APo4SpADs=); font-family: sans-serif; font-size: 12.7px; widows: 1; background-color: rgb(255, 255, 255);"><li style="margin-bottom: 0.1em;">The offline group will officially require a C++11 compliant compiler (e.g. gcc 4.9.2) starting June 1st.</li><li style="margin-bottom: 0.1em;">The hdops account uses sim-recon for monitoring histograms and hdview2 so we will need to support this change</li><li style="margin-bottom: 0.1em;">Hovanes argued that making the default compiler something other than the current 4.4.7 would require significant effort to not just recompile all of the controls software, but to test it all and ensure it still works correctly<ul style="line-height: 1.5em; list-style-type: square; margin: 0.3em 0px 0px 1.6em; padding: 0px; list-style-image: url("data:image/gif;base64,R0lGODlhBQANAIAAAGOMnP///yH5BAEAAAEALAAAAAAFAA0AAAIJjI+pu+APo4SpADs=");"><li style="margin-bottom: 0.1em;">Controls group has full list of high priority tasks prior to the Fall run with no significant manpower available for this testing</li></ul></li><li style="margin-bottom: 0.1em;">If the default compiler for hdops is not changed to gcc 4.9.2, then programs compiled with it will need to be outfitted with launch scripts to setup the proper environment before the program is run</li><li style="margin-bottom: 0.1em;">No consensus was reached. Further debate was deferred to a later date</li></ul><h2 style="font-weight: normal; margin: 0px 0px 0.6em; overflow: hidden; padding-top: 0.5em; padding-bottom: 0.17em; border-bottom-width: 1px; border-bottom-style: solid; border-bottom-color: rgb(170, 170, 170); font-size: 19.05px; font-family: sans-serif; line-height: 19.05px; widows: 1; background-image: none; background-color: rgb(255, 255, 255); background-position: initial initial; background-repeat: initial initial;"><span class="mw-headline" id="DAQ">DAQ</span><span class="mw-editsection" style="-webkit-user-select: none; font-size: small; margin-left: 1em; vertical-align: baseline; line-height: 1em; display: inline-block;"><span class="mw-editsection-bracket">[</span><a href="https://halldweb.jlab.org/wiki/index.php?title=OWG_Meeting_5-May-2016&action=edit§ion=10" title="Edit section: DAQ" style="text-decoration: none; color: rgb(90, 54, 150); background: none;">edit</a><span class="mw-editsection-bracket">]</span></span></h2><ul style="line-height: 19.05px; list-style-type: square; margin: 0.3em 0px 0px 1.6em; padding: 0px; list-style-image: url(data:image/gif;base64,R0lGODlhBQANAIAAAGOMnP///yH5BAEAAAEALAAAAAAFAA0AAAIJjI+pu+APo4SpADs=); font-family: sans-serif; font-size: 12.7px; widows: 1; background-color: rgb(255, 255, 255);"><li style="margin-bottom: 0.1em;">Sergey had to leave so no DAQ report</li></ul><h2 style="font-weight: normal; margin: 0px 0px 0.6em; overflow: hidden; padding-top: 0.5em; padding-bottom: 0.17em; border-bottom-width: 1px; border-bottom-style: solid; border-bottom-color: rgb(170, 170, 170); font-size: 19.05px; font-family: sans-serif; line-height: 19.05px; widows: 1; background-image: none; background-color: rgb(255, 255, 255); background-position: initial initial; background-repeat: initial initial;"><span class="mw-headline" id="L3_Status">L3 Status</span><span class="mw-editsection" style="-webkit-user-select: none; font-size: small; margin-left: 1em; vertical-align: baseline; line-height: 1em; display: inline-block;"><span class="mw-editsection-bracket">[</span><a href="https://halldweb.jlab.org/wiki/index.php?title=OWG_Meeting_5-May-2016&action=edit§ion=11" title="Edit section: L3 Status" style="text-decoration: none; color: rgb(90, 54, 150); background: none;">edit</a><span class="mw-editsection-bracket">]</span></span></h2><ul style="line-height: 19.05px; list-style-type: square; margin: 0.3em 0px 0px 1.6em; padding: 0px; list-style-image: url(data:image/gif;base64,R0lGODlhBQANAIAAAGOMnP///yH5BAEAAAEALAAAAAAFAA0AAAIJjI+pu+APo4SpADs=); font-family: sans-serif; font-size: 12.7px; widows: 1; background-color: rgb(255, 255, 255);"><li style="margin-bottom: 0.1em;">New low-level EVIO parsing code is still under development, but seems to be working at roughly 3x the speed of old parser</li><li style="margin-bottom: 0.1em;">Lower level reconstructed objects (e.g. DTrackCandidate) are produced with the same parameters, but higher level ones (e.g. DTrackTimeBased) have some discrepancies</li><li style="margin-bottom: 0.1em;">Current best estimate is L3 will be able to process 1kHz per node (or equivalent thereof)</li><li style="margin-bottom: 0.1em;">New nodes (to be purchased this year) should be about 2x as fast. Thus, current estimate is we will need 50 of those types of nodes for L3</li><li style="margin-bottom: 0.1em;">Will be purchasing 8 new nodes as part of CC annual procurement</li></ul><h2 style="font-weight: normal; margin: 0px 0px 0.6em; overflow: hidden; padding-top: 0.5em; padding-bottom: 0.17em; border-bottom-width: 1px; border-bottom-style: solid; border-bottom-color: rgb(170, 170, 170); font-size: 19.05px; font-family: sans-serif; line-height: 19.05px; widows: 1; background-image: none; background-color: rgb(255, 255, 255); background-position: initial initial; background-repeat: initial initial;"><span class="mw-headline" id="ROL_Status_.28SYNC_events.29">ROL Status (SYNC events)</span><span class="mw-editsection" style="-webkit-user-select: none; font-size: small; margin-left: 1em; vertical-align: baseline; line-height: 1em; display: inline-block;"><span class="mw-editsection-bracket">[</span><a href="https://halldweb.jlab.org/wiki/index.php?title=OWG_Meeting_5-May-2016&action=edit§ion=12" title="Edit section: ROL Status (SYNC events)" style="text-decoration: none; color: rgb(90, 54, 150); background: none;">edit</a><span class="mw-editsection-bracket">]</span></span></h2><ul style="line-height: 19.05px; list-style-type: square; margin: 0.3em 0px 0px 1.6em; padding: 0px; list-style-image: url(data:image/gif;base64,R0lGODlhBQANAIAAAGOMnP///yH5BAEAAAEALAAAAAAFAA0AAAIJjI+pu+APo4SpADs=); font-family: sans-serif; font-size: 12.7px; widows: 1; background-color: rgb(255, 255, 255);"><li style="margin-bottom: 0.1em;">Alex S. not at meeting so nothing was reported</li></ul><div><br></div></div></body></html>