The Strange Loop conference

[Christophe]

Timon Gehr , dans le message (digitalmars.D:145067), a écrit :
> I did: http://pastebin.com/2rEdx0RD

Nice!
 
> port of some haskell code from RosettaCode (run it ~20 min to get 
> results, haskell runs in less than 2s)
> http://pastebin.com/Vx4hXvaT

> The main performance issue is the garbage collector. Turning it off will 
> help performance a lot if you have enough RAM. Furthermore, DMD does not 
> do any advanced optimizations

Yes, we would certainly get a lot more performance with a specialized 
memory usage. Shuting off the GC and freeing manually delegate context 
when they are computed may help a lot.

We may also improve by using more CTFE, and less Laziness (LList for 
instance is a bit too much lazy). The code must stop everytimes it gets 
a Lazy objet just to know if it must compute the value or just use it. 
We must use the processor while it has to wait. Multiple thread can 
help, but I guess Haskell compliers have much better tools to do that. I 
doubt we can reach a descent fraction of Haskell's speed, but it sounds 
a fun thing to do, so I may give it a try. That would be good for my 
optimization skills :)

-- 
Christophe