Type of Talk: Colloquia

Speaker Name: Jos

e Ramon Herrero

Speaker Affiliation: Universitat Politecnica de Cat

alunya Barcelona Spain

Date: Monday November 13 2006

Sta

rt Time: 11:00 a.m.

Location: ACE 6.304

Host: Robert van d

e Geijn

Talk Title: A Framework for Efficient Execution of Matrix C

omputations

Talk Abstract:
Efficient execution of computationally
intensive algorithms requires adapting the code both to the problem and th

e underlying execution platform. We focus on two important machine resource

s: processor and memory. In this talk we will present our work on the creat

ion of efficient inner kernels based on a set of simple codes written in a

high level language and letting the compiler do the code optimizations. We
then use these kernels in both sparse and dense fields. We will show the p

rocess of fine tuning a sparse Cholesky factorization based on a Hypermatri

x data structure. We will also present our work on nonlinear data layouts f

or dense matrix computations.