Charm++ parallel programming system

[Phil Miller <mille121 AT illinois.edu>]

2011/2/14 Mikołaj Maćkowiak 
<mikolaj.mackowiak AT man.poznan.pl>:
> Dnia 2011-02-14, pon o godzinie 09:15 -0600, Jim Phillips pisze:
>> It works if you run the same 32-bit binary on both machines, which you can
>> in your case (x86_64 can run x86 binaries).  Otherwise no.
> Thanks. now it works :)
>
> But could you explain why 64-bit applications cannot communicate with
> 32bit apps?

They use different data types and padding in their communication.
There has been experimental work on running Charm++ applications
across multiple architectures, but this has never been a
production-grade capability. There's never been a compelling argument
for us to make this work in the general case.