com Identificações: upc_forall X
Implementing a Scalable Parallel Reduction in Unified Parallel C Blog da Comunidade
NancyWang Identificações: cppcafe upc_programming parallel upc_forall parallel_performance reduction parallel_computing upc 3.013 Visitas
A reduction is the process of combining elements of a vector (or array) to yield a single aggregate element. It is commonly used in scientific computations. For instance the inner product of two n-dimensional vectors x, y is given by: This computation requires...
Implementing a Scalable Parallel Reduction in Unified Parallel C (part 3) Blog da Comunidade
NancyWang Identificações: parallel reduction upc upc_forall cppcafe parallel_computing parallel_performance parallel_programming 2.212 Visitas
continue from the second parallel reduction blog . To get better scalability (increased program performance as the number of threads increases), it is critical to remove the lock in the upc_forall loop. This can be done by accumulating the partial sum...
Implementing a Scalable Parallel Reduction in Unified Parallel C (part 2) Blog da Comunidade
NancyWang Identificações: parallel_computing reduction cppcafe upc parallel_programming upc_forall parallel parallel_performance 1 Comentário 2.589 Visitas
continue from the previous parallel reduction blog The result is obvious wrong, but what is the problem? The keen reader might point out that the program as written contains a race condition. Multiple threads can write into shared variable "sum" concurrently,...