Abstract: Disclosed are a method and system for predicting future values of a target metric associated with a task executed on a computer system. The method includes the steps of, over a given period of time, measuring at least one defined metric, transforming that measurement into a value for a predictor source metric, and using the value for the predictor source metric to obtain a predicted future value for said target metric. The preferred embodiment of this invention provides a flexible performance multi-predictor to solve the problem of providing accurate future behavior predictions for adaptive reconfiguration systems. The multi-predictor makes predictions about future workload characteristic by periodically reading available hardware counters. Also disclosed is a method and system for periodically reconfiguring an adaptive computer system by rescheduling tasks based on future behavior predictions.
Type:
Grant
Filed:
October 17, 2003
Date of Patent:
July 4, 2006
Assignee:
International Business Machines Corporation
Inventors:
Gheorghe C. Cascaval, Evelyn Duesterwald, Sandhya Dwarkadas
Abstract: A finder apparatus which is used together with a photographing apparatus presents a marker for positioning for setting relative positions of the photographing apparatus and an object for calibration so as to be visually recognizable by an operator in a finder configured to present an image of a subject so as to be visually recognizable by the operator, when photographing the object for calibration including at least one of a known shape and a known surface attribute in order to acquire parameters of a photographing optical system of the photographing apparatus.