General Circulation Models (GCMs) suggest that rising concentrations of greenhouse gases will have significant implications for climate at global and regional scales. Less certain is the extent to which meteorological processes at individual sites will be affected. So-called ‘downscaling’ techniques are used to bridge the spatial and temporal resolution gaps between what climate modellers are c...

Achieving an appropriate workload distribution is essential if user applications are to achieve a satisfactory performance on software distributed shared memory (SDSM) clusters. To address this problem, the present study develops a novel method for distributing program threads onto the individual computers of SDSM clusters. In contrast to alternative methods, the proposed approach takes account...

The impact of climate change on soil temperatures at Kuujjuaq, Quebec in northern Canada is assessed. First, long-term historical temperature records (1967–1995) are statistically analyzed to provide a climatological baseline for soils 5 150 cm depths. Next, the nature relationship between atmospheric variables and determined using statistical downscaling model (SDSM) National Centers Environme...

The Supersymmetric Dual Sigma Model (SDSM) is a local field theory introduced to be nonlocally equivalent to the Supersymmetric Chiral nonlinear σ-Model (SCM), this dual equivalence being proven by explicit canonical transformation in tangent space. This model is here reconstructed in superspace and identified as a chiral-entwined supersymmetrization of the Dual Sigma Model (DSM). This analysis...

In this paper, we propose a new, efficient logging protocol, called lazy logging, and a fast crash recovery protocol, called the prefetch-based crash recovery (PCR), for software distributed shared memory (SDSM). Our lazy logging protocol minimizes failure-free overhead by logging only data indispensable for correct recovery, while our PCR protocol reduces the recovery time by prefetching data ...

This paper proposes a new portable parallel programming interface MpC, Meta process C, for Meta Process Model. The Meta Process Model is a parallel programming padadigm based on a hierarchical shared memory model and an explicit description of parallelism On these points, this model is different from either the strict Shared Memory Model (SMM) or the Message Passing Model (MPM). The Meta Proces...

The MODerate Resolution Imaging Spectroradiometer (MODIS) is one of the key instruments for the NASA s Earth Observing System (EOS). The MODIS ProtoFlight Model (PFM) was launched on-board the EOS Terra spacecraft on December 18, 1999 and has been providing the science community and public users global data sets for the study of the land, oceans, and atmosphere for more than two and a half year...

This paper presents an overview of an ongoing NSFsponsored project for the study of runtime systems and compilers to support the development of efficient OpenMP parallel programs for distributed memory systems. The first part of the paper discusses a prototype compiler, now under development, that will accept OpenMP and will target TreadMarks, a Software Distributed Shared Memory System (SDSM),...