Charm++ parallel programming system

[Phil Miller <mille121 AT illinois.edu>]

I'd be interested in learning a bit more about your code to understand the need for hundreds of generated modules. That's a structure I've not seen in a Charm++ program before. Is this ADHydro, or some other project?

On Tue, Jul 26, 2016 at 1:34 PM, Nels John Frazier <nfrazie1 AT uwyo.edu> wrote:

Phil,

That is the workaround I am using for now, I split the .ci files into 334 module files and compile each file.  So if I have two files, parcels.ci and parcels0.ci, with 334 modules or less defined in each, I can compile them with

charmc parcels.ci parcels0.ci

and it works fine.

We are using a lot of generated code, and are working only on a small test case with these objects.  We will likely end up working with thousands of objects at some point.  I will continue using the workaround, but I wanted to make sure you were aware of this limitation at the very least.

Thanks,

Nels Frazier

---

From: unmobile AT gmail.com <unmobile AT gmail.com> on behalf of Phil Miller <mille121 AT illinois.edu>
Sent: Tuesday, July 26, 2016 11:46:44 AM
To: Nels John Frazier
Cc: charm AT cs.illinois.edu
Subject: Re: [charm] Bug in charmc

 

It looks like you're working with generated .ci file code, and the translator is running out of memory. We could probably find ways to reduce its footprint, but the applicable use cases would make that fairly low priority. As a work-around, could you emit each generated module to a separate .ci file and run them through charmc individually?

On Tue, Jul 26, 2016 at 12:20 PM, Nels John Frazier <nfrazie1 AT uwyo.edu> wrote:

I'm working with charm 6.7.1 and ran across a bug in charmc/charmxi.

I have a .ci file with 458 modules in it, that look like this:

module par65800151
{
    PUPable par65800151;
}

When I have more than 334 of these modules in the .ci file, I get the following error when trying to compile:

charm/bin/charmc  ../generated_code/charm_diversions/parcels.ci
charm/bin/charmc: line 192: 14547 Segmentation fault      (core dumped) charm/bin/charmxi -orig-file ../generated_code/charm_diversions/parcels.ci
Fatal Error by charmc in directory management/build
   Command charm/bin/charmxi -orig-file ../generated_code/charm_diversions/parcels.ci returned error code 139
charmc exiting...

With 334 or less modules, it compiles fine.

Nels Frazier