On Sun, Mar 2, 2008 at 2:00 PM, Philippe Anel <[EMAIL PROTECTED]> wrote:
> If CSP system itself takes care about memory hierarchy and uses no > synchronisation (using IPI to send message to another core by example), > CSP scales very well. Is this something you have measured or is this conjecture? > Of course IPI mechanism requires a switch to kernel mode which costs a > lot. But this is necessary only if the destination thread is running on > another core, and I don't think latency is very important in algorigthms > requiring a lot of cpus. same question. For a look at an interesting library that scaled well on a 1024-node SMP at NASA Ame's, by Jim Taft. Short form: use shared memory for IPC, not data sharing. he's done very well this way. ron
