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Usage: Overview

Table 1: User statistics
Users Totals Residence Organization
Identified US Asia Europe Other Identified Edu. Ind. Gov. Other
Total Users 1
323,828 299,169 27% 39% 23% 11% 39,152 95% 3% 2% 1%
- Simulation Users 5
11,948 4,086 46% 29% 15% 9% 4,329 92% 4% 1% 3%
- Interactive Users 6
75,509 75,476 38% 35% 17% 9% 15,172 97% 2% 1% 0%
- Download Users 7
275,140 275,040 27% 38% 23% 11% 32,773 96% 3% 2% 0%
Total Users (old defn) 8
87,496 - - - - - - - - - -
Table 2: Simulation Usage
Simulation Users 5 11,948 users
Simulation Jobs 868,527 jobs
Total CPU Time 19,905 days  
Total Wall Time 35,887 days  
Total Interaction Time 8,061 days  
Users with > 10 mins of CPU Time 4,483 users  
Avg. Number of Simulation Jobs/User 73 jobs  
Avg. Time between First and Last Simulation 319 days  
Repeat Users with > 10 Simulation Jobs 6,230 users  
Repeat Users with > 3 Months 9 3,307 users  
Table 3: Miscellaneous Statistics
Domains Served 19,743
Cummulative Interactive User Sessions 10 312,343
Cummulative Session Time 15,007 days
Visitors 11 703,511
Visits 12 2,355,323
New Accounts 15,262
Max User Logins 1072 users on 2015-01-21
Web Server Hits 119,382,633
Table 4: Collaboration Usage
Shared Tool Sessions 13 235
New tools under development 50
Table 5: User statistics by registered/unregistered
Users Totals Residence Organization
Identified US Asia Europe Other Identified Edu. Ind. Gov. Other
Total Users 1
323,828 299,169 27% 39% 23% 11% 39,152 95% 3% 2% 1%
- Registered Users 2
30,990 6,450 48% 28% 15% 9% 6,800 91% 5% 1% 3%
- Unregistered Interactive Users 3
45,737 45,709 29% 43% 20% 9% 5,686 96% 2% 2% 0%
- Unregistered Download Users 4
247,101 247,010 26% 39% 24% 11% 26,666 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.

nanoHUB.org, a resource for nanoscience and nanotechnology, is supported by the National Science Foundation and other funding agencies. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.