Download ADA in Practice by C. Ausnit, et al PDF

By C. Ausnit, et al

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6 version, complex arrays are represented using a Complex [] [] array of Complex objects. No semantic expansion was applied. The NINJA version uses ComplexArray2D Arrays from the Array package and semantic expansion. 6 and NINJA versions. 5 Mflops for matmul). We achieve Java performance that ranges from 55% (microac) to 85% (fft and cfd) of fully optimized Fortran code. E. Moreira et al. /NINJA: Java for high performance numerical computing Fig. 6. Performance results of applying our Java optimization techniques to various cases.

Van der Vorst. Solving Linear Systems on Vector and Shared Memory Computers. Society for Industrial and Applied Mathematics, 1991. [8] J. Gosling, B. Joy and G. Steele, The Java(™) Language Specification. Addison-Wesley, 19%. G. Gustavson, Recursion Leads to Automatic Variable Blocking For Dense Linear Algebra Algorithms. IBM Journal of Research and Development 41(6) (November 1997). 737-755. [10] International Business Machines Corporation, IBM Parallel Engineering and Scientific Subroutine Library for AIX - Guide and Reference.

Get(i)). Finally, those values are used to update yi. 3. Versioning for safe and alias-free regions For Java programs written with the Array package, the compiler can perform simple transformations that eliminate the performance problems caused by Java's precise exception model. The idea is to create regions of code that are guaranteed to be free of exceptions. Once these exception-free (also called safe) regions have been created, the compiler can apply traditional core-reordering optimizations, constrained only by data and control dependences [20].

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