Data Duplication and Consolidation

 

with Philip Alpatov and Greg Morrow The primary vehicles for   communication in the PLAPACK infrastructure are the   copy and   reduce operations. The approach is to describe the distribution for the input and output using linear algebra objects, and then to copy or to reduce from one to the other.

• Copy
  • Copy involving vectors
  • Copy involving multivectors
  • Copy involving matrices
  • Copy involving multiscalars
  • Specialized copy
• Reduce
• Pipelining Computation and Communication
• A Building Block Approach to Implementing Copy and Reduce
  • Collective communication operations
  • Efficient implementation of collective communication
  • Implementation of the copy
  • Implementation of the reduce
• More Operations and Information