Usage: Overview

As part of nanoHUB’s continued effort to provide valuable statistics, parts of the usage overview page may be temporarily unavailable as we implement improvements.

During this transition, historical usage data and site metrics will remain available. Site data continues to be logged and processed to maintain continuity with existing usage statistics.

Table 1: User statistics
Users Totals Residence Organization
Identified US Asia Europe Other Identified Edu. Ind. Gov. Other
Total Users 1
347,681 314,890 0% 0% 0% 0% 40,092 0% 0% 0% 0%
- Simulation Users 5
12,393 4,928 47% 28% 16% 10% 5,139 91% 4% 1% 3%
- Interactive Users 6
71,500 64,881 30% 41% 19% 10% 11,293 96% 2% 1% 0%
- Download Users 7
307,475 294,948 26% 41% 22% 11% 33,552 95% 3% 2% 0%
Total Users (old defn) 8
83,933 - - - - - - - - - -
Table 2: Simulation Usage
Simulation Users 5 12,393 users
Simulation Jobs 595,760 jobs
Total CPU Time 15,703 days  
Total Wall Time 48,777 days  
Total Interaction Time 9,076 days  
Users with > 10 mins of CPU Time 4,726 users  
Avg. Number of Simulation Jobs/User 48 jobs  
Avg. Time between First and Last Simulation 291 days  
Repeat Users with > 10 Simulation Jobs 5,986 users  
Repeat Users with > 3 Months 9 3,315 users  
Table 3: Miscellaneous Statistics
Domains Served 19,891
Cummulative Interactive User Sessions 10 294,056
Cummulative Session Time 13,479 days
Visitors 11 697,378
Visits 12 2,413,160
New Accounts 14,247
Max User Logins 1000 users on 2014-02-19
Web Server Hits 105,136,194
Table 4: Collaboration Usage
Shared Tool Sessions 13 157
New tools under development 46
Table 5: User statistics by registered/unregistered
Users Totals Residence Organization
Identified US Asia Europe Other Identified Edu. Ind. Gov. Other
Total Users 1
347,681 314,890 0% 0% 0% 0% 40,092 0% 0% 0% 0%
- Registered Users 2
28,741 7,271 46% 28% 16% 9% 7,553 89% 6% 1% 4%
- Unregistered Interactive Users 3
43,405 40,698 23% 46% 21% 9% 4,811 95% 3% 2% 0%
- Unregistered Download Users 4
275,535 266,921 25% 42% 23% 11% 27,728 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.