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In preparation for the Intergovernmental Panel on Climate Change (IPCC) Fifth Assessment Report, the climate community will run the Coupled Model Intercomparison Project phase 5 (CMIP-5) experiments, which are designed to answer crucial questions about future regional climate change and the results of carbon feedback for different mitigation scenarios. The(More)
Petascale HPC systems are among the largest systems in the world. Intrepid, one such system, is a 40,000 node, 556 teraflop Blue Gene/P system that has been deployed at Argonne National Laboratory. In this paper, we provide some background about the system and our administration experiences. In particular, due to the scale of the system, we have faced a(More)
While other programs check for bad passwords after the fact, it is important to have good passwords at all times, not just after the latest Crack run. To this end we have modiied Larry Wall's Perl password program and added, among other features, the ability to check a sorted list of all the \bad passwords" that Crack will generate, given all the(More)
In this paper, we present an architecture that encapsulates system hardware inside a software component used for job execution and status monitoring. The development of this interface has enabled system simulation, which yields a number of novel benefits, including dramatically improved debug and testing capabilities.
Developing fault management mechanisms is a difficult task because of the unpredictable nature of failures. In this paper, we present a fault simulation framework for Blue Gene/P systems implemented as a part of the Cobalt resource manager. The primary goal of this framework is to support system software development. We also present a hardware diagnostic(More)
The shape of anatomic objects often depends in complex ways on the shapes and locations of neighboring objects. Shape parameter networks provide an approach for representing shape dependencies and producing multi-object models that share consistent boundary definitions. This paper provides an overview of the modeling framework provided by shape parameter(More)
The Course Timetabling Problem is a widely studied optimization problem where a number of sections are scheduled in concert with the assignment of students to sections in order to maximize the desirability of the resulting schedule for all stakeholders. This problem is commonly solved as a linear program with variables for each student or group of students(More)
The principal barriers to universal screening for the cooccurring disorders of mental illness and substance abuse are training, time, cost, and a reliable and valid screen. Although many of the barriers to universal screening still remain intact, the lack of a cooccurring screen that is effective and can be administered in a cost efficient way is no longer(More)
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