From: fateman@cs.berkeley.edu   
      
   On 7/5/2017 4:55 AM, bursejan@gmail.com wrote:   
   > Hint for RJF slow thinker: Thats exactly why I will   
   > beat the shit out of maxima in the future.   
   >   
   > Am Mittwoch, 5. Juli 2017 13:13:54 UTC+2 schrieb burs...@gmail.com:   
   >> You see the factor in GB between my Prototype and   
   >> maxima is only a nearly factor 5 (some factor as   
   >> for your non-GB example (1000+v+w+x+y)^20):   
   >>   
   >>      1593 ms / 328 ms = 4.85   
      
   I think you are referring to your example, in Maxima.   
      
   load(grobner);   
   poly_buchberger([(5+(5+a^2)*b-a*b^2)*t,(5*a^2*b-(a+4*a^2)*b^2)*(t-1)],[t,a,b]);   
      
      
   which you think takes 328ms.   
      
     I just ran it on my Maxima (5.40.0)/SBCL system.   How to run in SBCL   
   has been described earlier in this thread.   Jan can do it.)   
      
   To get a non-zero  timing result I ran it 100 times for which it took   
   0.359 seconds.   
      
   for i:1 thru 100 do   
   poly_buchberger([(5+(5+a^2)*b-a*b^2)*t,(5*a^2*b-(a+4*a^2)*b^2)*(t-1)],[t,a,b]);   
      
      
      
   Or about 0.00359 seconds per run.  Or 3.59 milliseconds.   
      
   Anyone with a (free) copy of Maxima, started up in SBCL, can duplicate these   
   timings on another computer.   
      
   So the factor is, neglecting differences in CPU speed (maybe 2X?) ,   
   something   
   like 1593/3.59, or about 443X.  Not 5.   
      
      
   ..............   
      
   When one resorts to argumentum ad hominem it is a   
   compliment to the quality of the opposing argument, and a sign   
   of desperation on one's part.   
      
      
   RJF   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)