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This paper presents an overlapping technique of communications by computations based on pipelined communications. This allows to improve the execution time of most parallel numerical algorithms. Some simple examples are developed to illustrate the efficiency of this technique: matrix-vector product and bi-dimensional Fast Fourier Transform. Moreover, we propose an unified formalism to express easily...
We present in this paper general techniques for overlapping communications in parallel numerical kernels. We describe first some dependencies schemes which can be found in most of numerical parallel algorithms and we apply on these schemes methods based on the change of the granularity of the computational tasks. The choice of the granularity in order to obtain a good overlap depends on the main parameters...
The outgassing of e-beam resist materials has to be carefully considered in the research and development of multi e-beams lithography. The release of hydrocarbonaceous species by outgassing in high-vacuum e-beam exposure tool is indeed unavoidable and may lead to premature contamination of optics projection systems. Such a contamination may affect the incident electrons path and hence the final imaging...
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