On Sun, Jun 22, 2008 at 5:39 PM, Riccardo Gori <[EMAIL PROTECTED]> wrote: > > On Sunday 22 June 2008 12:47:38 physnut wrote: >> hello there, i'm only new to this project (and haven't started helping >> at all >> yet...) but wouldn't it be better to retain both versions and give >> them >> slightly different names (and explain there are two in docstrings)? I >> am >> presuming that the version which modifies the matrix in situ is faster >> and/or >> uses lower memory for lots of large matrices? From a CAS standpoint I >> agree >> with the convenience of making a new matrix, but I am probably not >> alone in >> wanting to use symbolic mathematics as part of the internals of my >> program >> and since I am running a home cluster the more efficient the code, the >> smaller >> my electricity bill is!! >> > > Hello, > I can suggest a solution: > we could implement expand (and the other functions as applyfunc, diff, etc...) > in that way: > > def function(self,modint=False): > if modint: > modify(self) > else: > return new_modified > > The version that modify the matrix is 15-20% faster, and uses lot less memory > (I don't know how to measure it, with a big matrix and using top I can see > 35-40% less memory used, but this is not a good method to measure)
What others think about this? What does Sage/numpy and other CAS systems do? Ondrej --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "sympy" group. To post to this group, send email to sympy@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sympy?hl=en -~----------~----~----~----~------~----~------~--~---
