Experiment Advisor Monitoring

Fri Sep 27 21:48:50 UTC 2013

Hi David, Ryan Whitfield just replied me with the same information. I am 
really please with their velocity to reply. 
Thank you very much for your support. I am also glad that I don't have to 
install a new OS on the machine :)))

Best Regards,
Valerio 

On Friday, 27 September 2013 22:08:55 UTC+1, McFarlane, David wrote:
>
> Oops, my apology, I see that I just repeated what David Vinson 
> (quoting PST Support) already said. 
>
> -- David McFarlane 
>
>
> At 9/27/2013 11:42 AM Friday, David McFarlane wrote: 
> >If you just unplug your computer from the network while running 
> >E-Prime experiments (as advised in the E-Prime User's Guide), not 
> >only will you disable clock synchronization, you will also avoid 
> >other timing interferences due to network activities. 
> > 
> >-- dkm 
> > 
> > 
> >At 9/27/2013 11:33 AM Friday, David Vinson wrote: 
> >>Hi Vaaal, 
> >> 
> >>I had some exchanges with PST support about the clock issues with 
> >>WinXP, here's what they told me at the time: 
> >> 
> >>>Windows XP sometimes causes the speed of the processor to be 
> >>>reported as the clock frequency. When the speed of the processor 
> >>>changes during an experiment, this can interfere with E-Prime's 
> >>>timing. Therefore, our developers have advised that some users 
> >>>with Windows XP may need to switch over to the power management 
> >>>clock. I have attached a document explaining how to make this 
> >>>change. Once the change has been made, E-Prime will use the power 
> >>>management clock on your system, which should perform much better 
> >>>than the default clock. Note that this involves changing your 
> >>>system's Boot.ini file, so we strongly recommend backing up your 
> >>>system before performing these actions. 
> >>> 
> >>>Also, you should consider turning off clock synchronization, at 
> >>>least while running E-Prime experiments. It should only occur 
> >>>occasionally, but your network might have different custom 
> >>>settings. Please see the following Microsoft article for more 
> >>>information: 
> >>>
> http://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/windows_date_turn_off_synch.mspx?mfr=true. 
>
> >>>Of course, the simplest way to turn it off during an experiment is 
> >>>to physically unplug the cable from the computer. You should not 
> >>>have any other programs or processes running during the experiment 
> >>>anyway, so unplugging it should not cause any problems. 
> >> 
> >>The document mentioned in the first paragraph includes instructions 
> >>on how to switch the power management clock by editing boot.ini - 
> >>I'm sure PST support will pass that information along to you in due 
> course. 
> >> 
> >>Hope this helps, 
> >>(A different) David 
> >> 
> >> 
> >>On 27/09/2013 16:24, Vaaal wrote: 
> >>>Hi David, 
> >>>thank you for your advice, I got it. 
> >>>What actually concerns me is this one, since my machine in the lab 
> >>>run exactly Windows XP: "The E-Prime Primary Clock is configured 
> >>>in a way that could cause timing inconsistencies on Windows XP. 
> >>>Contact PST Tech Support to configure the clock for more 
> >>>stabilized performance when using Windows XP with this finding". I 
> >>>contacted the PST tech support but still no reply. In the 
> >>>meantime, do you have any knowledge about that? Should I install a 
> >>>new OS in my lab machine? 
> >>> 
> >>>On Friday, 27 September 2013 15:49:28 UTC+1, McFarlane, David wrote: 
> >>> 
> >>>     Valerio, 
> >>> 
> >>>     You can puzzle this out for yourself.  Try the following.  Open a 
> >>>     blank (Professional) experiment.  Run it.  Now look at the 
> resulting 
> >>>     ExperimentAdvisorReport.xml.  See the Experiment Advisor Modules 
> >>>     table?  Does it include all the same items as before, even though 
> the 
> >>>     experiment is completely blank? 
> >>> 
> >>>     Now disable some of the Experiment Advisor Modules.  E.g., back in 
> >>>     E-Studio, open the Experiment Object Properties, go to the 
> Experiment 
> >>>     Advisor tab, and disable "Use of ClearAfter" and "Use of 
> >>>     Stretch".  Run this, open the resulting 
> ExperimentAdvisorReport.xml, 
> >>>     and look at the Experiment Advisor Modules table.  Do you see that 
> >>>     "An object has its ClearAfter property set to Yes..." and "A 
> visual 
> >>>     object has its Stretch property set to Yes..." have both 
> disappeared? 
> >>> 
> >>>      From this evidence would you conclude that the Experiment Advisor 
> >>>     Modules table tells you only what modules were enabled, and not 
> what 
> >>>     problems it found?  Would you find this useful, because without 
> this 
> >>>     information you could not tell whether the lack of a warning only 
> >>>     meant that that test was not run? 
> >>> 
> >>>     As usual, do not take my word for any of this, test it out for 
> >>>     yourself.  I presented my answer this way because I need to stress 
> >>>     that I do not have any inside knowledge about E-Prime, I simply 
> >>>     figure it out exactly as I outlined above. 
> >>> 
> >>>     Best regards, 
> >>>     ----- 
> >>>     David McFarlane 
> >>>     E-Prime training 
> >>>     online: http://psychology.msu.edu/Workshops_Courses/eprime.aspx 
> >>>     <http://psychology.msu.edu/Workshops_Courses/eprime.aspx> 
> >>>     Twitter:  @EPrimeMaster (https://twitter.com/EPrimeMaster 
> >>> >> >     <https://twitter.com/EPrimeMaster>) 
> >>> 
> >>>     /---- 
> >>>     Stock reminder:  1) I do not work for PST.  2) PST's trained staff 
> >>>     take any and all questions at 
> >>>     http://support.pstnet.com/e%2Dprime/support/login.asp 
> >>>     <http://support.pstnet.com/e%2Dprime/support/login.asp> , and 
> they 
> >>>     strive to respond to all requests in 24-48 hours, so make full use 
> of 
> >>>     it.  3) In addition, PST offers several instructional videos on 
> their 
> >>>     YouTube channel (http://www.youtube.com/user/PSTNET 
> >>> >> >     <http://www.youtube.com/user/PSTNET> ).  4) If you do 
> >>>     get an answer from PST staff, please extend the courtesy of 
> posting 
> >>>     their reply back here for the sake of others. 
> >>>     \---- 
> >>> 
> >>> 
> >>>     At 9/26/2013 05:01 PM Thursday, Vaaal wrote: 
> >>>     >Quick question about this interesting feature of e-prime. When I 
> >>>     >open the xml I can read several tables. Although it is clear for 
> me 
> >>>     >the meaning of onset to onset stats, onset delay stats, load time 
> >>>     >stats and experiment advisor finding, the last table is a little 
> bit 
> >>>     >more difficult for me to understand: Experiment Advisor Modules. 
> >>>     >I was checking this table when I notice that most of the 
> "problem" 
> >>>     >pointed out by this table was actually not relevant for my 
> >>>     design. For example: 
> >>>     >  "A visual object has its Stretch property set to Yes, which can 
> >>>     > cause display timing anomalies. Instead of using Stretch, 
> consider 
> >>>     > editing the source material to match the size and proportions 
> you 
> >>>     > want to display during the experiment". 
> >>>     >But no visual object in my experiment has stretch set to Yes. Or, 
> >>>     again: 
> >>>     >"An object has its ClearAfter property set to Yes. ClearAfter is 
> a 
> >>>     >deprecated property." 
> >>>     > 
> >>>     >This is not true for any of my object. 
> >>>     >So, how reliable is this table? 
> >>>     >Or maybe it just point out to POSSIBLE/LIKELY problems, without 
> >>>     >actually telling that you are incurring in one of those? 
> >>>     > 
> >>>     >Thank you very much for any clarification. 
> >>>     >Valerio 
> >> 
> >>-- 
> >>David Vinson, Ph.D. 
> >>ESRC Research Fellow 
> >>Cognitive, Perceptual and Brain Sciences Research Department 
> >>University College London 
> >>26 Bedford Way, London WC1H 0AP 
> >>Tel +44 (0)20 7679 5311  (UCL internal ext. 25311) 
>
>

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