[Darshan-users] is darshan going to work with serial applications?

[Kevin Harms]

Dragos,

  Darshan does require MPI. So you'll need to link with MPI and you will need to call MPI_Init() and MPI_Finalize(). After that, everything should work fine. Having a serial program shouldn't matter.

  int main()
  {
      MPI_Init()
      ... all your code ...
      MPI_Finalize()  
  }

  If you have an difficulties, please let us know.

kevin

On Nov 8, 2012, at 12:31 AM, Dragos Constantin wrote:

> Dear Colleagues,
> I try to benchmark the I/O load of a serial application based on Geant4. Someone suggested I use darshan but I am not so convinced it is going to work. 
> 
> In order to reach statistical significance and to perform a 4D parameter sweep I have divided one huge task into tens of thousands of small tasks so each core of the cluster is solving a part of the problem. There is no message passing between tasks but I believe I can compile my application with MPI if that is needed by darshan to centralize data collection. 
> 
> So, is it possible to use darshan with a serial application? 
> 
> Thank you in advance for your help.
> 
> Dragos Constantin, PhD
> 
> Research Associate
> Department of Radiology 
> Stanford University 
> Lucas MRS Center 
> 1201 Welch Rd., PS-055 
> Stanford CA 94305 
> 
> Office: (650) 736-9961
> Fax: (650) 723-5795 
> 
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