Information Technology at Emory IT Briefing Agenda 7/17/05 • • Microsoft Agreement SPSS Site License IMAP Polling Net. Reg/CAT Update Research Cluster Premiere Support Net. Com Q&A Information Technology Division Technical Services • • John Ellis Marcy Alexander Ken Guyton Alan White Keven Haynes Karen Jenkins Paul Petersen
Information Technology at Emory General Updates
Information Technology at Emory Eagle Mail Performance An opportunity to make it faster Ken Guyton
Information Technology at Emory Architecture • Eagle mail consists of three services – Relay – Delivery – Reading Information Technology Division Technical Services
Information Technology at Emory Architecture • Relay – Moving email from computer to computer (SMTP) Information Technology Division Technical Services
Information Technology at Emory Architecture • Delivery – Delivering messages into an INBOX. Information Technology Division Technical Services
Information Technology at Emory Architecture • Reading – Users retrieving their messages to read them, mark as read, delete, etc. (IMAP) Information Technology Division Technical Services
Information Technology at Emory Architecture LDAP routing Relay Spam 2 Virus disk 4 firewall Read/Deliv 6 IMAP proxy 3 Relay 3 Information Technology Division clients Technical Services other svrs Webmail 4
Information Technology at Emory The Situation • Reading and Delivery live on the same servers. Information Technology Division Technical Services
Information Technology at Emory The Situation CPU Utilization 100% CPU Utilization 90% 80% 50% 1 50% 2 3 Read/Delivery Servers Information Technology Division Technical Services 4 5
Information Technology at Emory The Situation Users per server 100% CPU Utilization 90% 12300 12809 80% 50% 8313 50% 4168 75 1 2 3 Read/Delivery Servers Information Technology Division Technical Services 4 5
Information Technology at Emory The Question • What are 75 users doing to use 50% of a Read/Delivery server? Information Technology Division Technical Services
Information Technology at Emory Observations • Make some measurements of busy IMAP processes • Tracing with truss • Profile processes • Packet snooping Information Technology Division Technical Services
Information Technology at Emory Observations • . . . to answer questions: – What are these processes doing? – What system calls are using the most CPU time? – What IMAP commands are being sent? –. . . and how often? Information Technology Division Technical Services
Information Technology at Emory Results • Processes are doing a lot of disk I/O. • The system calls that account for the vast majority of CPU time are read() and alarm(). • The IMAP command is SELECT Information Technology Division Technical Services
Information Technology at Emory More Observations • Instrument the imapd daemon (we have the source code!) • Log SELECTS on a user and mailbox basis • Plot behavior Information Technology Division Technical Services
Information Technology at Emory Results ≤ 1 min Information Technology Division Technical Services ≤ 5 min > 5 min
Information Technology at Emory Conclusions • High-frequency SELECTs are killing us • A new server/75 users is EXPENSIVE! Information Technology Division Technical Services
Information Technology at Emory Hypothesis • When clients check for new email they send a SELECT • (They should send a NOOP) • Users are setting their clients to check for email every minute Information Technology Division Technical Services
Information Technology at Emory Final Notes • Webmail checks every five minutes (and does use SELECT) • Some clients have a drop-down menu to select this time (1 -min, 5 min, etc. ) Information Technology Division Technical Services
Information Technology at Emory Our Plea • See if your users are polling < 5 min • 10 min is better • You can always manually check for new email • Help them change their polling time if needed Information Technology Division Technical Services
Information Technology at Emory The UNIX Group • Chris Alexander • Bruce Anderson • Karla Fields • Amanda Gagnon • Ken Guyton • Curt Tucker • Eric Van Wieren Information Technology Division Technical Services
Information Technology at Emory Net. Reg/CAT Update Alan White
Information Technology at Emory University High Performance Computing Cluster Keven Haynes
Information Technology at Emory Need for High Performance • Large number of computations • Large data set • Complex computations • Specialized applications • More disciplines doing computational work Information Technology Division Technical Services
Information Technology at Emory Need for Shared Resources • Most researchers do not have physical resources to house large computing systems. Air Conditioning, Power, Security are all important, often overlooked. • Many researchers lack technical expertise required to manage systems, especially Linux/Unix. • Most personally-owned systems are underutilized, therefore not as cost-effective. • Money pooled-together can buy bigger and better systems. Information Technology Division Technical Services
Information Technology at Emory High Performance Computing Cluster • Partnership between Emory College, BIMCORE (School of Medicine) and ITD. • Emory College and individual faculty (Jeager, Printz) provided funding for purchase of the cluster. • BIMCORE provides software expertise, costrecovery infrastructure. • ITD provides facility and system administration. Information Technology Division Technical Services
Information Technology at Emory The Cluster - hardware • 63 dual-processor (AMD 2. 2 GHz Opteron 248) Sun V 20 z’s “Compute Nodes” • 1 quad-processor (AMD 2. 2 GHZ Opteron 848) Sun V 40 z “Master Node” • Compute Nodes have 2 GB of RAM each, Master node has 8 GB. • Each node has 73 GB of local disk space (RAID 1) • Master Node has 550+ GB of local disk space • Two 47 u APC powered rack enclosures Information Technology Division Technical Services
Information Technology at Emory The Cluster - Networking • All nodes connected via gigabit Ethernet (copper) on private network • Two SMC gigabit switches • 21 Nodes are connected via 4 gigabit Myrinet • Service processors connected via 100 Mb Ethernet • Two MRV serial console switches Information Technology Division Technical Services
Information Technology at Emory The Cluster - Software • Red Hat Enterprise Linux - Version 3, x 86_64, Advanced Server and Workstation – Kernel 2. 4. 21, glibc 2. 3. 2, gcc version 3. 2. 3 – 64 -bit Operating system/runtime environment • Sun Grid Engine : TM – Manages queuing and prioritization of jobs – Performs job and user accounting for time-shared resource – Can support up to 200, 000 jobs simultaneously – Heterogeneous support allows connection of Mac OS X, Solaris and other execution hosts Information Technology Division Technical Services
Information Technology at Emory Current and Future Applications • Genesis (neural simulator, Jaeger) • Pattern Generation and Homeostasis in Neural Circuits (Prinz) • Pharmacology (Severson) • Others: – – – Animation Rendering Statistical Analysis (-R-) Numerical Analyis (MATLAB) Bioinformatics (BLAST) Large Population Studies, GIS Information Technology Division Technical Services
Information Technology at Emory Who may use the Cluster? • Researchers, namely PI’s • Open to anyone affiliated with Emory, possibly some external research • Subscription Fee: ~ $3000/year or $750/quarter Information Technology Division Technical Services
Information Technology at Emory Questions? Information Technology Division Technical Services
Information Technology at Emory Premiere Support Overview Karen Jenkins
Information Technology at Emory Premiere Support • Advanced/escalated support for specific set of customers – Local support and other campus technical professionals – Executive leadership (later phase) • Benefits – Dedicated number to reduce wait times – Direct entry to high level support technicians Information Technology Division Technical Services
Information Technology at Emory When to use • Reporting of system down and other performance issues only. – University Enterprise applications & Network – Examples include: Network Outage affecting a large department, building, or campus; Eagle Mail is down; People. Soft is crawling; other “strange” behavior • Non-critical or other work requests should go through Manage IT or ESR. – Examples include: account requests, virus reporting, suggestions to improve service, etc. Information Technology Division Technical Services
Information Technology at Emory Logistics • Hours: M-F 8: 00 am – 5: 00 pm • After hours calls automatically forwarded to the help desk (which forward to oncall after help desk hours). • Premiere Support Team: – Call Center supervisor – Craig Myers – Linda Ellis Information Technology Division Technical Services
Information Technology at Emory Responsibilities • Obtain technical input/details • Escalate to proper Tier 3 team • Provide regular communication and updates – Via Manage IT Bulletin Board • Provide final debrief / explanation of problem – Again via Manage IT Information Technology Division Technical Services
Information Technology at Emory Setup • Dedicated line rings on the primary team members phone sets • After 4 rings rolls over to help desk FTE phones … if busy the queue – Premiere Support calls are placed in the front of the queue. – Investigating adding a visual indicator for the help desk FTEs. Information Technology Division Technical Services
Information Technology at Emory Pre-Requisites • Requires a support account in Manage IT • Participation in the local-l listserv • Caller ID information displayed Information Technology Division Technical Services
Information Technology at Emory … and the number is … Will be posted on the Manage IT Bulleting Board Available on TBD Information Technology Division Technical Services
Information Technology at Emory INPUT, QUESTIONS, COMMENTS Information Technology Division Technical Services
Information Technology at Emory Quick Manage IT Update • New Manage IT Major Features for 8/31/05 – – Flashboards Port Status Table 2 -Way email Assignment permissions group • Target Features for 9/30/05 – – Manage IT Training Session Scheduled for: September 13 th @ 1: 00 pm NDB Auditorium or Kennessaw PS Status Table Emory Reports Magic View Resolution / Communication to requester Information Technology Division Technical Services
Information Technology at Emory Quick ESR Update • New ESR Major Features by 8/31/05 – Change pop-ups to long names – Web & DB self-service forms • Target Features for 9/30/05 – On-behalf of (in Manage IT too) – Communication box Information Technology Division Technical Services
Information Technology at Emory Net. Com Q&A Information Technology Division Technical Services
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