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42.
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A small test for the condestsp function: condestsp gives an estimate of 
the condition number K1 in 1-norm of a real sparse matrix A: |
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Start a new line in the equivalent position in the translation.
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Enter a space in the equivalent position in the translation.
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43.
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without explicitly computing the inverse of A. condestsp uses a factorization given by
umf_lufact but if you have already computed this one it is recommended to give the pointer to the factorization.
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Start a new line in the equivalent position in the translation.
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represents a space character.
Enter a space in the equivalent position in the translation.
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44.
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The test consists in forming small sparse matrices (so as to compute K1 exactly with
norm(inv(full(A)),1)) whose values are chosen from the normal distribution. |
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45.
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Press Return to continue...
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46.
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This test compares umfpack v3 and sparse v1.3 via their Scilab interface.
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47.
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The test consists in loading Harwell-Boeing sparse matrices and solve linear system with a random rhs.
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48.
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The matrices presented here come from the NIST server Matrix server:
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49.
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Warning: tests 2 and 3 take much more time than the others.
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50.
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Test 1: Jacobian of a nonlinear system of ordinary differential equations (ODEs) modeling a laser
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51.
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Mean time and accuracy for umfpack (t1 and ||A*x-b||):
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