Changes between Version 15 and Version 16 of u/erica/ScalingBluestreak


Ignore:
Timestamp:
02/23/14 20:07:18 (11 years ago)
Author:
Erica Kaminski
Comment:

Legend:

Unmodified
Added
Removed
Modified
  • u/erica/ScalingBluestreak

    v15 v16  
    2121
    2222
    23 == '''Frame / hour calculation:''' ==
     23== '''Frames / hour calculation:''' ==
    2424
    25 The frame rate R in hour/frame is calculated as follows for the 32 node case. To get frames/hour, take the inverse R^-1^. ''This assumes the write time will be the same at the end of the normal dt frame rate.''
     25Start with calculating the framerate R. Since my data is given in minutes, R naturally has  units of mins/frame. Remember to subtract off the write-time before multiplying by 10, since we are interested in the computation time only for a full time step. We can add the write-time back afterward:
     26
     27[[latex($R = (Total ~time - write ~time)*10 + write~time $)]]
     28
     29So now we have a framerate in minutes/(full) frame. To convert to hours/frame, divide by 60, and to get to frames/hour, invert R.
    2630
    2731'''32 Nodes Example'''
    2832
    29 [[latex($R_{32} = (Total ~time - write ~time)*10 + write~time $)]]
    30 
    31 To get in hours per frame, divide by 60:
     33An example of how to do this for the 32 node case is as follows,
    3234
    3335[[latex($ R_{32} = [(33 - 1.9)*10 + 1.9 ]min\times \frac{1 ~hr}{60 ~min} = 5.2 ~\frac{hr}{frame} $)]]
     36
     37To get frames/hour, take the inverse R^-1^. ''This assumes the write time will be the same at the end of the normal dt time step.''
    3438
    3539[[latex($ R^{-1}_{32} = 0.19 ~\frac{frames}{hour}$)]]