[Scalapack] communicator returned by Cblacs2sys_handle
From: naromero at alcf.anl.gov
Date: Thu, 19 Aug 2010 20:47:47 -0600 (GMT-06:00)
When a BlacsGrid is created via a call to blacs_gridmap, it looks like at least
three communicators are created:
1. MPI communicator for scope = 'all'
2. MPI communicator for scope = 'row'
3. MPI communicator for scope = 'Column'
From the look of the BLACSCONTEXT structure in Bdef.h, there is also possibly
a pt2pt scope?
My main question:
Which communicator is returned by Cblacs2sys_handle?
Nichols A. Romero, Ph.D.
Argonne Leadership Computing Facility
Argonne National Laboratory
Building 240 Room 2-127
9700 South Cass Avenue
Argonne, IL 60490
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[Scalapack] communicator returned by Cblacs2sys_handle,
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