Re: LuaJIT2 performance for number crunching
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- Subject: Re: LuaJIT2 performance for number crunching
- From: T T <t34www@...>
- Date: 2011年2月21日 10:37:46 +0000
On 19 February 2011 16:14, Francesco Abbate <francesco.bbt@gmail.com> wrote:
> 2011年2月19日 T T <t34www@googlemail.com>:
>> On 19 February 2011 15:04, Francesco Abbate <francesco.bbt@gmail.com> wrote:
>>> input. The difference is that I don't use vector but everything is
>>> expanded to local variables using a template preprocessor.
>>
>> What will happen for an ODE system of large dimension, say 1000 or 10,000?
>
> In this case your computer may explode... be careful!
Too late, now I'm left with a smoking pile of transistors ;)
> No, I'm kidding... I know about this problem and I was planning to add
> different mechanism with arrays to manage ODE systems with non-small
> dimension.
But then the user supplied function needs a different format depending
on the size of the ode, right?
for small ode:
dydt_1, dydt_2, ... = f(t, y_1, y_2, ...)
for large ode:
f(t, y, dydt)
Hmm, not that nice from the UI design POV.
Cheers,
Tomek
PS. Do you have performance numbers for C variant with -O3? I'm
curious how does this compares to luajit.