Re: Multithreading question

[Marcus G. Daniels]

> it's probably true that in my case the real bottleneck is not Swarm's 
> expensive way of passing messages to the members of the list (uhm, a 
> 10x speedup of your code? I think I need to check that 
> createActionForEach CPU-eater more closely, in Swarm's source); still 
> it looks a really neat trick that might help save many CPU cycles in 
> those cases when one, after prototyping in Swarm, doesn't feel like 
> restarting from scratch in C++ or Fortran or whatever, as Glen suggested.

-[at:]createFActionForEachHomogeneous:call: will give better performance 
than a C `for' loop that just reissues the messages in one place.  It 
will lift the message dispatches out of the loop and do the same for 
loop on your behalf.  Use a C `for' loop if you can trivially remove all 
message-sends from inside the loop.  You can even have the FCall passed 
to this method be a simple function call.


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