- I explain my USL program - 2 Updates
- cmsg cancel <nds5f5$3qn$2@dont-email.me> - 2 Updates
| Ramine <ramine@1.1>: Apr 03 06:33PM -0700 Hello.. I will a little bit explain my USL program... If you have took a look at this link: https://cran.r-project.org/web/packages/usl/vignettes/usl.pdf You will notice that the performance data for the raytracer in the link above is the same as the performance data inside the data.csv file inside my zip file of my USL software.. And as you have noticed in the link above the peak scalability number is at: 449 processors. So if you run my program against this same performance data like this at the command prompt: usl data.csv So the output is of my program is: -- Peak number is: 449.188 Predicted scalability peak is: 18.434 Coefficient of determination R-squared is: 0.995 -- So as you have noticed that the peak number that is the peak number of processors is: 449.188 this is the same result as the link above. So my program is working correctly. But this is not the end of the story.. You have to optimize the criterion of the cost for a better QoS, and for this i have supplied you with a second option called -d that you have to run for that, so you have to type at the command prompt: usl data.csv -d 0.3 0.1 the 0.3 is the slop of the secant with a step 0.1, so since the step is 0.1 so this will approximate a derivative of the USL equation that equal 0.3, so here is the output of my program when you run it with -d 0.3 0.1: -- Peak number is: 449.188 Predicted scalability peak is: 18.434 Coefficient of determination R-squared is: 0.995 The derivative of the USL equation at delta(y)/delta(x)=0.300 with a step delta(x)=0.100, gives a good approximation of a number and a derivative delta(y)/delta (x) of: 16.600 and 0.300 -- So as you have noticed that a good approximation for the derivative of the USL equation will arrive at the 16.600 cores and this gives also a derivative of the secant that approximate the derivative of the USL equation. So to optimize more the criterion of the cost for a better QoS, you have to choose a good delta(y)/delta(x) to optimize the criterion of the cost of your system and you have to balance better between the performance and the cost. You can download my USL program with the source code from: https://sites.google.com/site/aminer68/universal-scalability-law-for-delphi-and-freepascal Thank you, Amine Moulay Ramdane. |
| Ramine <ramine@1.1>: Apr 03 06:47PM -0700 On 4/3/2016 6:33 PM, Ramine wrote: > to type at the command prompt: > usl data.csv -d 0.3 0.1 > the 0.3 is the slop of the secant with a step 0.1, I mean: the 0.3 is the slope of the secant with a step 0.1 |
| bleachbot <bleachbot@httrack.com>: Apr 04 12:32AM +0200 |
| bleachbot <bleachbot@httrack.com>: Apr 04 12:45AM +0200 |
| You received this digest because you're subscribed to updates for this group. You can change your settings on the group membership page. To unsubscribe from this group and stop receiving emails from it send an email to comp.programming.threads+unsubscribe@googlegroups.com. |
No comments:
Post a Comment