Re: LuaJIT2 performance for number crunching
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- Subject: Re: LuaJIT2 performance for number crunching
- From: steve donovan <steve.j.donovan@...>
- Date: 2011年2月14日 12:08:08 +0200
On Mon, Feb 14, 2011 at 11:57 AM, Francesco Abbate
<francesco.bbt@gmail.com> wrote:
> Seems the right tool to use. A link please ?
http://snippets.luacode.org/snippets/Lua_Preprocessor_118
(has also the link to the original wiki page)
My example was over-hasty, you need to create some local aliases to
the array components (that is, y is a two dimensional array)
smooth3 = compile ([[
return function (y,f1,f2,n)
# for d = 1,nk do
local y$(d) = y[$(d)]
# end
for i = 1,n do
# for d = 1,nk do
y$(d)[i] = f1*y$(d)[i] + f2*y$(d)[i-1]
# end
end
end
]],{nk = 3})
A useful notational convenience would be to allow something like y$d
(i.e. without the parentheses)
compile() is of course not yet written, but that is relatively straightforward.
steve d.