Re: [myhdl-list] Clump'n and Lump'n

[Christopher F. <chr...@gm...>]

On 6/2/2011 1:41 PM, Uri Nix wrote:
> Hi,
>
> In my experience SystemC+Boost is functionally equivalent to MyHDL for
> system modelling, although the LA and PE for Python is an order of magnitude
> easier.
> Another significant advantage of Python is its cross platform portability
> (Windows, Unix, Linux, etc), which saves the hassle of deployment and
> managing different build chains.
>
> Cheers,
> Uri

Yes, I agree!  Using the numerical packages in Python is much easier. 
To your point I can open a Python shell and do the following:
 >> from numpy import *
 >> X = random.rand(3,3)
 >> matrix(X) * matrix(X[1,:]).transpose()
 >>
matrix([[ 0.53398746],
         [ 0.96773496],
         [ 1.01327792]])

#... expand to myhdl ...
 >> sX = Signal(matrix(X))
 >> sY = Signal(matrix(X[1,:].transpose())
 >> sX.next = sX * sY
#...

And easily incorporate into my design without much issue (the above is 
way too simple of an example).  I can quite easily do complicated system 
modeling; mixing cycle and bit-accurate if needed.

It has been awhile since I used SystemC (over 5 years?).  I remember it 
being difficult (relative) and I am a pretty proficient C/C++ 
programmer.  But it could have been that I gave up on SystemC when I 
started using MyHDL more :)

Then I can create all my plots for analysis right in my simulation, I 
don't have to post-process simulation results.

The only argument might be simulation speed.  But I am usually done with 
my development and simulations and onto the next item, before I would 
have completed a C* implementation, making the simulation speeds a moot 
point.

I have also found interface MyHDL with simulators to be easier than 
SystemC.  I guess it is the Python *batteries-included*!

Chris