Set Blacs grid over different MPI groups

Post here if you have a question about LAPACK or ScaLAPACK algorithm or data format

Set Blacs grid over different MPI groups

Postby rs_ionela » Tue Jan 15, 2013 4:43 am

Hi,

I'm working on a parallel application (simulation) which requires that some of processors from a MPI communicator do some operations, and others to compute the eigenvalues.
To compute the eigenvalues I'm using the Scalapack PDSYEVD routine.
What I want to do is to split the communicator into a desired number of MPI groups and use the ScaLAPACK routine over a MPI group. But I don't know how to set the Blacs grid over different MPI groups.

Can anyone help me?

Best regards,
Ionela
rs_ionela
 
Posts: 1
Joined: Tue Feb 07, 2012 5:51 am

Re: Set Blacs grid over different MPI groups

Postby JlDavid » Thu Feb 28, 2013 6:44 am

Hi . I can't help you with this , but I know how you can learn about MPI Group Management . Here is the website - static.msi.umn.edu/tutorial/scicomp/general/MPI/communicator.html .
JlDavid
 
Posts: 1
Joined: Thu Feb 28, 2013 6:40 am


Return to Algorithm / Data

Who is online

Users browsing this forum: No registered users and 2 guests