Climateprediction Size Table
From Unofficial BOINC Wiki
Contents |
[edit] Table of size of all the downloads and uploads
| Item | Size | Frequency |
|---|---|---|
| BOINC Download | 6MB | Once per BOINC upgrade |
| Climateprediction Application | 15Mb | Once every model but only if there has been an upgrade |
| Climateprediction Model | 10K | Once per Model |
| Trickle | 91 bytes | 72 times per model |
| Mega or GM Trickle (for graphs) | 169 bytes | Once per phase |
| Science upload | 7MB | Once per Model |
That is too much detail, give me a total
If you upgrade BOINC 3 times a year, the project upgrades science application 3 times a year and you are running a reasonably fast processor which does 2.2 Second per Timestep, then total uploads and downloads are:
(6MB * 3) + (15MB * 3) + 18.4models * (10K + 91b * 72 + 169b * 3 + 7MB) = 192MB per annum
So, the average is under 16MB per month. That is fairly low for a BOINC project.
[edit] Table of size of parts of a model
| Item | Number of / Amount of | Amount of | |||||
|---|---|---|---|---|---|---|---|
| Timesteps | Trickles | Phases | Model | Model Time | Real Time on fast computer | Credits | |
| Timestep | 1 | Half hour | 2.2 Seconds | 0.00875 | |||
| Checkpoint | 144 | 3 Days | 5.25 Minutes | 1.26 | |||
| Trickle | 10802 | 1 | 7.5 months | 6.6 hours | 94.5175 | ||
| Model Year | 17280 | 1.6 | 1 Year | 10.56 hours | 151.2 | ||
| Phase | 259248 | 24 | 1 | 15Years 1 day | 6.6 days | 2268.42 | |
| Standard Model | 777744 | 72 | 3 | 1 | 45Years 3 days | 19.8 days | 6805.26 |
| THC Model | 1036992 | 96 | 4 | 1 | 60Years 4 days | 26.4 days | 60 Model Years - Not BOINC so 0 BOINC credit |
| Sulphur Cycle Timestep | 1 | Half hour | 3.75 | 0.014875 | |||
| Sulphur Cycle Model | 1036992 | 120 | 5 | 1 | 75Years 5 days | 52.8 days | 19282 |
[edit] Time to complete
Here's some rough performance numbers for a reasonably quick P4, using 1 logical cpu:
- Timestep = 2.2 Seconds
- Trickle = 6.6 Hours
- Model year = 10.6 Hours
- Phase = 6.6 Days
- Model = 19.8 Days
[edit] Size on Hard Disk
- Maximum size of running Climateprediction.net Model: 750MB
- Size of full completed Climateprediction.net Model: 330MB
[edit] Climateprediction.net Cell Sizes
- Climateprediction.net Cells are 3.75 latitude by 2.5 latitude in the standard experiment. They will obviously be smaller in the High Resolution model. Therefore these cells vary in size depending upon latitude. Area of Cell at equator is 45,000 square miles. At the latitude of London 53 degrees, cells are 27,000 square miles and so UK is largely covered by 4 cells. There are 19 layers
- Data stored at corners giving data grid of 96 by 73 = 7008 data points per layer or 133152 in total.
- Of these data points 6818 per layer are unique giving 129542 in total. See Climateprediction.net Cell for more detail.
[edit] Also See
- Climateprediction.net Project Index
- Climateprediction.net Science Index
- Climateprediction.net Model Parts
- Climateprediction Size Table
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