Charm++ parallel programming system

[Evan Ramos <evan AT hpccharm.com>]

Hi Jozsef,

Unfortunately, constructors may not use the threaded attribute. The functionality that implements threaded methods requires that a chare's constructor has already run. I wrote a patch for charmxi to throw an error in this situation: https://charm.cs.illinois.edu/gerrit/c/charm/+/4948

-Evan

On Wed, Jan 30, 2019 at 9:15 AM Jozsef Bakosi <jbakosi AT lanl.gov> wrote:

Thanks, Sam. Follow-up:

Can chare array constructors be threaded? I get a compile error if I
try:

 error: use of undeclared identifier 'impl_obj_void'
  new (impl_obj_void) DiagCG(std::move(disc.t), std::move(fd.t));

Jozsef

On 01.30.2019 14:56, White, Samuel T wrote:
> Yes, if you make a call to a [sync] entry method from a non-[threaded] entry method, the caller will not block as intended, so if your program relies on the blocking behavior for correctness then it will be erroneous.
>
> -Sam
>
> ________________________________________
> From: Jozsef Bakosi [jbakosi AT lanl.gov]
> Sent: Wednesday, January 30, 2019 7:27 AM
> To: charm AT lists.cs.illinois.edu
> Subject: [charm] sync & threaded attributes
>
> Hi folks,
>
> Do I understand it correctly that sync entry methods should always only
> be called from threaded entry methods? Do I invite random errors when
> this is not so?
>
> Thanks,
> Jozsef