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Home Usage Overview By Month

Usage: Overview

Table 1: User statistics
Users Totals Residence Organization
Identified US Asia Europe Other Identified Edu. Ind. Gov. Other
Total Users 1
19,228 16,090 32% 45% 16% 7% 3,959 94% 3% 2% 1%
- Simulation Users 5
1,558 390 48% 29% 16% 7% 405 92% 5% 1% 2%
- Interactive Users 6
3,794 3,787 44% 37% 12% 7% 1,242 95% 3% 2% 0%
- Download Users 7
14,660 14,651 30% 46% 17% 7% 3,005 95% 3% 2% 0%
Total Users (old defn) 8
5,352 - - - - - - - - - -
Table 2: Simulation Usage
Simulation Users 5 1,558 users
Simulation Jobs 36,992 jobs
Total CPU Time 278 days  
Total Wall Time 1,420 days  
Total Interaction Time 435 days  
Users with > 10 mins of CPU Time 352 users  
Avg. Number of Simulation Jobs/User 24 jobs  
Avg. Time between First and Last Simulation 424 days  
Repeat Users with > 10 Simulation Jobs 613 users  
Repeat Users with > 3 Months 9 624 users  
Table 3: Miscellaneous Statistics
Domains Served 2,130
Cummulative Interactive User Sessions 10 8,503
Cummulative Session Time 427 days
Visitors 11 38,670
Visits 12 75,252
New Accounts 1,130
Max User Logins 451 users on 2016-01-25
Web Server Hits 8,211,896
Table 4: Collaboration Usage
Shared Tool Sessions 13 6
New tools under development 1
Table 5: User statistics by registered/unregistered
Users Totals Residence Organization
Identified US Asia Europe Other Identified Edu. Ind. Gov. Other
Total Users 1
19,228 16,090 32% 45% 16% 7% 3,959 94% 3% 2% 1%
- Registered Users 2
3,860 731 48% 30% 16% 6% 760 90% 5% 1% 3%
- Unregistered Interactive Users 3
2,055 2,052 40% 42% 13% 5% 558 95% 3% 2% 0%
- Unregistered Download Users 4
13,313 13,307 29% 46% 17% 7% 2,641 95% 3% 2% 0%

  1. Sum of Registered Users2, Unregistered Interactive Users3 and Unregistered Download Users4
  2. Number of Users that logged in. User registration assigns a unique login to each individual user.
  3. Number of Unregistered Users, identified by unique hosts/IPs, that had an active Session 10 without logging in. Does not include known web bots/crawlers.
  4. Number of Unregistered users, identified by unique hosts/IPs, that had an active session of less than 15 minutes without logging in and downloaded a non-interactive resource such as PDF or podcast. Does not include web bots/crawlers.
  5. Number of Registered Users2 that ran one or more simulation runs.
  6. All Unregistered Users, identified by unique hosts/IPs, that had an active Session 10. Does not include known web bots/crawlers.
  7. All Unregistered users, identified by unique hosts/IPs that downloaded a non-interactive resource such as PDF or podcast. Does not include known web bots/crawlers.
  8. Sum of Simulation Users 5 + Unregistered Interactive Users 3 including web bots/crawlers.
  9. Number of Simulation users that returned after a gap of 3 months.
  10. Begins when an IP is active on the site for at least 15 minutes. Ends when inactive for more than 30 minutes, including time spent viewing videos.
  11. Identified by a unique IP address / hostname.
  12. Based on MIT OCW metric of Visits: A visit is activity by a unique visitor delimitated by a 30 minute absence from the site on either side of the activity.
    These visits correspond to unique visitors 11. Does not include known web bots/crawlers
  13. Number of Simulation sessions that were shared between 2 or more users.

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