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UDIMSE − CUTEr tool to determine the number of nonzeros required to store the sparse Hessian matrix in finite element format. |
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CALL UDIMSE( NE, NZH, NZIRNH ) |
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The UDIMSE subroutine determine the number of nonzeros required to store the Hessian matrix of the objective function of the problem decoded into OUTSDIF.d at the point X in the case where the only possible constraints are bound constraints. This Hessian matrix is stored as a sparse matrix in finite element format, using square symmetric elements. |
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The arguments of UDIMSE are as follows |
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NE [out] - integer |
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the number of "finite-elements" used, |
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NZH [out] - integer |
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the dimension of the array needed to store the real values of the Hessian, taking all the elements into account (i.e. the dimension of the array HI). |
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NZIRNH [out] - integer |
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the dimension of the array needed to store the integer values of the Hessian (i.e. the dimension of the array IRNHI). |
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I. Bongartz, A.R. Conn, N.I.M. Gould, D. Orban and Ph.L. Toint |
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CUTEr (and SifDec): A Constrained and Unconstrained Testing Environment, revisited, N.I.M. Gould, D. Orban and Ph.L. Toint, ACM TOMS, 29:4, pp.373-394, 2003. CUTE: Constrained and Unconstrained Testing Environment, I. Bongartz, A.R. Conn, N.I.M. Gould and Ph.L. Toint, TOMS, 21:1, pp.123-160, 1995. cdimse(3M). |