5.1. Saxpy-OpenACC benchmarkΒΆ


This benchmark runs several SAXPY operations in the GPU. SAXPY is a Level 1 operation in the Basic Linear Algebra Subprograms package, and is a common operation in computations with vector processors. SAXPY is a combination of scalar multiplication and vector addition.


  • 01.multisaxpy_openacc: Parallel version using OpenACC tasks

Execution instructions

To run the program use: ` ./multisaxpy_openacc SIZE BLOCK_SIZE ITERATIONS `


  1. SIZE is the number of elements of the vectors used on the SAXPY operation

  2. The SAXPY operation will be applied to the vector in blocks that contains BLOCK_SIZE elements

  3. ITERATIONS is the number of times the SAXPY operation is executed

References http://en.wikipedia.org/wiki/AXPY