Most space-sharing parallel computers presently operated by production high-performance computing centers use batch-queuing systems to manage processor allocation. In many cases, users wishing to use these batch-queued resources may choose among different queues (charging different amounts) potentially on a number of machines to which they have access. In such a situation, the amount of time a ...

background: since preterm delivery is an important problem in obstetrics, it is necessary to know the risk factors. periodontal disease is an infectious disease and infection is risk factor for preterm delivery. respecting to the mechanisms of preterm delivery and because involved mediators in this procedure are synthesized in periodontal disease, gum disease is investigated as risk factor for ...

Background. In setting a problem of minimizing total weighted tardiness by the heuristic based on remaining available and processing periods, there are two opposite ways to input data: job release dates given in either ascending or descending order. It was recently ascertained that scheduling few equal-length jobs is expectedly faster order, whereas 30 70 1.5 % 2.5 For number between roughly 90...

In this work, we evaluate the benefits of using Grids with multiple batch systems to improve the performance of multi-component and parameter sweep parallel applications by reduction in queue waiting times. Using different job traces of different loads, job distributions and queue waiting times corresponding to three different queuing policies (FCFS, conservative and EASY backfilling), we condu...

A method is presented for estimating the improvement potential of planning and scheduling in a batch-wise processing company. It involves a characterization of the actual planning and scheduling situation and supports systematic exploration of improvement options and their benefits. Insights gained in two explorative industrial case studies were used to arrive at a robust method that can be app...

The batch scheduler is an important system software serving as the interface between users and HPC systems. Users submit their jobs via batch scheduling portal and the batch scheduler makes scheduling decision for each job based on its request for computing sources, i.e. core-hours. However, jobs submitted to HPC systems are usually parallel applications and their lifecycle consists of multiple...

Scheduling decisions in the diffusion and cleaning area can be crucial for the overall performance of a semiconductor manufacturing facility. This area includes complex production constraints and long processing durations. Consequently, we want to optimize scheduling decisions in this area while taking all relevant real-world constraints into account. An important property of machines in this w...

We investigate a difficult scheduling problem in a semiconductor manufacturing process that seeks to minimize the number of tardy jobs and makespan with sequence-dependent setup time, release time, due dates and tool constraints. We propose a mixed integer programming (MIP) formulation which treats tardy jobs as soft constraints so that our objective seeks the minimum weighted sum of makespan a...