The OPAL Discussion Forum

[jjyang <jianjun.yang AT psi.ch>]

在 2011-9-2，上午11:09， Yves Ineichen 写道：

> Hi all,
> 
> I made some changes[1] with respect to the MPI Communicator in IPPL.
> Basically you can now run OPAL (any application using IPPL) on a
> subset of processors by passing a user defined MPI group to the IPPL
> constructor. This parameter defaults to MPI_COMM_WORLD so you don't
> have to change anything if you want to use IPPL as before.
> 
> To adapt OPAL to the new MPI communicator mechanism I had to adapt
> some pure MPI_* and H5OpenFile calls (by using Ippl::getComm() to get
> the currently used communicator). Long story short: When you update
> OPAL to r12707[1] you NEED TO UPDATE AND REBUILD IPPL as well!
> 
> Sidenote: [2] also introduces a crude OPAL library wrapper (see
> src/opal.h/cpp). This means OPAL can now be called as a library from
> other projects/code/languages.
> 
OPAL as a library, that is cool !  
Maybe it is clearer to give a sample example or the instructions. 
> 
> Best regards,
> 
> 
> [1] https://amas.psi.ch/IPPL/changeset/12699
> [2] https://amas.psi.ch/OPAL/changeset/12707
> 
> -- 
> Yves Ineichen
> Paul Scherrer Institut WLGB/125 CH-5232 Villigen PSI
> Phone Office: +41 56 310 37 63
> http://amas.web.psi.ch
> ::p = "This statement cannot be proven"::
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