Charm++ parallel programming system

[Jozsef Bakosi <jbakosi AT gmail.com>]

Hi folks,

I suspect I know the answer to this question but I'd like some clarification on it.

What is the main difference between creating (a potentially large number of) individual chares and those calling back to a single host proxy or creating the workers instead as a chare array and using reduction. I assume the latter will do some kind of message aggregation under the hood (i.e., using a tree) and collect messages (in the form of an entry method arguments) from individual array elements and send only aggregated messages to the single host. Is this correct? If so, I guess, I should get better performance...

Thanks,

Jozsef