recording current experimental time

Tue Jul 12 10:54:07 UTC 2011

Well, the computers have some differences, the slowest is a Core2
Pentium, the fastest an i5. But we are talking of really small bitmaps
of 40x40 pixels, I guess this shouldn't make much of a difference even
for a 486er.
The two bitmaps are a horizontal and a vertical line. They are
distributed on a matrix of 10x10 positions.

On 11 Jul., 20:11, Peter Quain <pqu... at une.edu.au> wrote:
> Hi Tobias,
>
> That much difference between machines sounds pretty bad, and they
> can't be too 'comparable' hardware wise. Could be a faulty graphics
> card / driver on the 5 second machine? Is it a GeForce card, perhaps?
> They can perform really badly. Maybe it has a bunch of processes
> running background, chewing up CPU? Anyway, 5 seconds is an age, I'd
> be wary about using that machine.
>
> If you only have 2 stimuli, what are they? (why do they need to be bitmaps)
>
> Peter
>
> At 03:37 AM 12/07/2011, you wrote:
>
>
>
>
>
>
>
> >Thanks Peter!
>
> >That command and your suggested syntax perfectly worked out. Now I
> >know which part of my code was so time consuming.
> >However, I am not sure if I can reduce the timing and still I don't
> >know why the loading time differs so much between computers.
>
> >Here is the crucial part of the code:
>
> >for i = 1 to 101
> >'matrix positions
> >                 Set ResponseMask_SlideImage = New SlideImage
> >                 ResponseMask_SlideImage.Name = "Image" & i
> >                 InitSlideImageDefaults ResponseMask_SlideImage
> >                 ResponseMask_SlideImage.X = "104 " + ((i-1) mod 10)*48
> >                 ResponseMask_SlideImage.Y = "24" + ((i-1) \ 10)*48
> >                 ResponseMask_SlideImage.Width = "40"
> >                 ResponseMask_SlideImage.Height = "40"
> >                 ResponseMask.States.Item("Default").Objects.Add
> >ResponseMask_SlideImage, "Image" & i
>
> >Select Case ResponseMask.ActiveState
> >Case "Default"
>
> >                 Set ResponseMask_SlideImage =
> >CSlideImage(ResponseMask.States.Item("Default").Objects(i))
> >                 ResponseMask_SlideImage.Filename = "Mask.bmp"
> >                 if i = 1 then ResponseMask_SlideImage.Filename =
> > "fixation.bmp"
> >                 ResponseMask_SlideImage.Load
> >                 Set ResponseMask_SlideImage = Nothing
>
> >end select
> >next i
>
> >Especially the "ResponseMask_SlideImage.Load" takes 5-8 ms. As I have
> >a display of 100 elements this adds up to almost a second. However,
> >there are only two types of stimuli, so maybe there is way that the
> >two bitmaps are loaded once each but "built up" on all 100 positions?
>
> >Any clue why loading time differs so much between computers with
> >comparable hardware?
>
> >Thanks a lot in advance!
> >Best,
> >Tobias
>
> >On 11 Jul., 17:57, Peter Quain <pqu... at une.edu.au> wrote:
> > > in the e-basic help look up: Clock.Read. It is ms since start of the
> > > script. You can store value in variables and compute various
> > > durations if you want.
>
> > > Example:
> > > 'Make some Global Variables (in 'User' Tab)
> > > Dim time1, time2, dur1 as Long
> > > 'At some later time in your script, grab time since script started
> > > time1 = Clock.Read
> > > '[.... some more part of your experiment ....]
> > > 'Grab time since script started
> > > time2 = Clock.Read
> > > 'Compute interval, time1 to time2
> > > dur1 = time2 - time1
>
> > > At 01:39 AM 12/07/2011, you wrote:
>
> > > >Hi together,
>
> > > >I programmed an experiment in which a lot of positions and stimuli
> > > >have to be calculated online. Calculation of slides happens BEFORE
> > > >they are executed. Interestingly, this can cause a delay of up to 5
> > > >sec (not ms!) for some computer, 2 sec for other computers and only 1
> > > >sec on a third computer. Importantly, these computers are comparable
> > > >regarding their hardware, i.e. processor, RAM etc.
>
> > > >To test what exactly takes E-Prime so long under some circumstances,
> > > >Iw ould like to measure the experimental time at several points in
> > > >time during a single trial. So I can find out which part of the
> > > >programming should be optimized or if there's even an error I don't
> > > >recognize.
>
> > > >Therefore I would like to have, let's say 10 attributes and assign 10
> > > >times the current run time to one of these attributes. Unfortunately I
> > > >couldn't find the right command for this operation in the manual.
>
> > > >Does any of you know how I could do so? Or did sth similar (i.e. this
> > > >delay) happen to one of you?
>
> > > >Best,
> > > >Tobias
>
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