Top Forums UNIX for Dummies Questions & Answers Move os from 1 disk to the other Post 302810895 by bakunin on Wednesday 22nd of May 2013 04:47:39 PM
alister is correct: if this system is of any value you shouldn't attempt to solve the problem but get some professional help for that.

Having said this: which system do you have (OS?, hardware?) and how is it configured (LVM used?, etc.)

Without this information your question is like asking for the solution of the math problem in front of you without telling us what the problem is. We simply can't tell.

bakunin
 
Test Your Knowledge in Computers #407
Difficulty: Medium
Cygwin's default package selection is quite small, containing little more than the bash shell and the core file manipulation utilities expected of a Unix command line.
True or False?

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ZGGLSE(l)								 )								 ZGGLSE(l)

NAME
ZGGLSE - solve the linear equality-constrained least squares (LSE) problem SYNOPSIS
SUBROUTINE ZGGLSE( M, N, P, A, LDA, B, LDB, C, D, X, WORK, LWORK, INFO ) INTEGER INFO, LDA, LDB, LWORK, M, N, P COMPLEX*16 A( LDA, * ), B( LDB, * ), C( * ), D( * ), WORK( * ), X( * ) PURPOSE
ZGGLSE solves the linear equality-constrained least squares (LSE) problem: minimize || c - A*x ||_2 subject to B*x = d where A is an M-by-N matrix, B is a P-by-N matrix, c is a given M-vector, and d is a given P-vector. It is assumed that P <= N <= M+P, and rank(B) = P and rank( ( A ) ) = N. ( ( B ) ) These conditions ensure that the LSE problem has a unique solution, which is obtained using a GRQ factorization of the matrices B and A. ARGUMENTS
M (input) INTEGER The number of rows of the matrix A. M >= 0. N (input) INTEGER The number of columns of the matrices A and B. N >= 0. P (input) INTEGER The number of rows of the matrix B. 0 <= P <= N <= M+P. A (input/output) COMPLEX*16 array, dimension (LDA,N) On entry, the M-by-N matrix A. On exit, A is destroyed. LDA (input) INTEGER The leading dimension of the array A. LDA >= max(1,M). B (input/output) COMPLEX*16 array, dimension (LDB,N) On entry, the P-by-N matrix B. On exit, B is destroyed. LDB (input) INTEGER The leading dimension of the array B. LDB >= max(1,P). C (input/output) COMPLEX*16 array, dimension (M) On entry, C contains the right hand side vector for the least squares part of the LSE problem. On exit, the residual sum of squares for the solution is given by the sum of squares of elements N-P+1 to M of vector C. D (input/output) COMPLEX*16 array, dimension (P) On entry, D contains the right hand side vector for the constrained equation. On exit, D is destroyed. X (output) COMPLEX*16 array, dimension (N) On exit, X is the solution of the LSE problem. WORK (workspace/output) COMPLEX*16 array, dimension (LWORK) On exit, if INFO = 0, WORK(1) returns the optimal LWORK. LWORK (input) INTEGER The dimension of the array WORK. LWORK >= max(1,M+N+P). For optimum performance LWORK >= P+min(M,N)+max(M,N)*NB, where NB is an upper bound for the optimal blocksizes for ZGEQRF, CGERQF, ZUNMQR and CUNMRQ. If LWORK = -1, then a workspace query is assumed; the routine only calculates the optimal size of the WORK array, returns this value as the first entry of the WORK array, and no error message related to LWORK is issued by XERBLA. INFO (output) INTEGER = 0: successful exit. < 0: if INFO = -i, the i-th argument had an illegal value. LAPACK version 3.0 15 June 2000 ZGGLSE(l)

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