Charm++ parallel programming system

[Michael Robson <mprobson AT illinois.edu>]

Hello Debashis,

Apologies for the slow response. This is very concerning but before we can debug the problem could you please reply with the following information?

• charm version/commit
  
• build target
  
• build line/options

Thanks,

Michael

On Sat, Feb 18, 2017 at 7:15 PM Ganguly, Debashis <DEG80 AT pitt.edu> wrote:

Hi folks,

I am starting to experiment with load balancing in Charm++ and would like to see some example benchmarks where it is functioning.

I am able to run leanmd mini-app with 5 different load balancers in SMP mode. However, I am unable to run any other with any load balancer.

In the Charm++ website, it is mentioned that AMR has an automatic feature to support load balancers. However, when I try to run AMR it aborts with an error "Cannot insert array element twice!". This is the same with jacobi2d under the AMR within examples. This led me to believe it has something to do with AMR library under ck-libs. Whereas, jacobi2D under examples folder upon running throws memory corruption error.

I also had downloaded lulesh from LLNL website. Unfortunately, it is compatible with earlier version of Charm++. It doesn't print any debug message when run with the +LBDebug option. There is no way to trace whether load balancer is working or not. Moreover, with and without any load balancer, the performance is same.

I have also tried running wave2d this gives segmentation fault after running for awhile. 

It would be a great help if you can suggest two or three mini-apps that support load balancers in SMP mode or point out if there are some obvious things that I am messing up with the aforementioned applications.

Thanks,

Debashis

--

Michael Robson <mprobson AT illinois.edu>

PhD

 Candidate in Computer Science

University

 of Illinois at Urbana-Champaign

http://charm.cs.illinois.edu/people/mprobson