Re: parallel pari: parfirst

[Bill Allombert <Bill.Allombert@math.u-bordeaux1.fr>]

On Thu, Oct 24, 2013 at 09:16:31AM +0200, Loïc Grenié wrote:
>     A "parbreak()"-like would be a little bit more general. You add a
> conditional
>   part to pareval
> 
> pareval(vector(10000,i,chkell(p)),(i,r)->test(i,r)))
> 
>   where i is the input of the function called in parallel and r its output.
>   Then test would return 0 (go on) or !0 (stop) (in your example,
>   test(i,r)=r). test() is evaluated in the main pari, so it can use/modify
>   global variables.

Or even a 
parfor(i=a,b,j,f(i),g(i,j))
which compute the f(i) in parallel and compute the g(i,f(i)) sequentially
but in random order. Eventually g(i,f(i)) can call break, which will stop
parfor.

Cheers,
Bill.