What I want to do is for each value in the first column of the first file (lets call it x) I want to print the last column in the 2nd file if the 5th column begins with x.
So for the above, the first value in the first column of the first file is 20. None of the column4 values in the 2nd file begin with 20 so I don't want to print anything. For 33 from the first file I would want to print the value in the last column of the 2nd file for each line e.g 34,34,34,254,254,34.
I have this, it works but my CPU usage for this process is about 30%! Is there a way to make this more efficient?
If you know a way to make this more efficient I'd be grateful!
how can I find cpu usage memory usage swap usage and
I want to know CPU usage above X% and contiue Y times and memory usage above X % and contiue Y times
my final destination is monitor process
logical volume usage above X % and number of Logical voluage above
can I not to... (3 Replies)
Hi Friends, I have a tuff time with regular expressionss. Please let me know how to make this happen as it consumed lots of my time but in vain. Here is the sample text file i need to match for. I need to search for pattern1 removed, if it matches then search for pattern types either SE\ or... (2 Replies)
using perl
Hi All, i was wondering if anyone can solve how to extract the full tag from the xml line ie not sure what to put in the m// to get the string
"/data/TOP471//context_data/instruments.txt"
I basically want the above filename in a variable for further processing...
$_ =" ... (0 Replies)
I have an array and two variables as below,
I need to check if $datevar is present in $filename.
If so, i need to replace $filename with the values in the array.
I need the output inside an ARRAY
How can this be done.
Any help will be appreciated. Thanks in advance. (2 Replies)
Hi,
I am trying to write a script which parses a log file and will eventually put the values in an array so that I can perform some math on it. In this file I am only interested in the last 200 lines so here is the command I use to display the contents in a manageable manner.
tail -200... (3 Replies)
Hi Experts,
I am executing multiple instances(in parallel) of perl script on HP-UX box.
OS is allocating substantial amount of CPU to these perl processes,resulting higher cpu utilization.
Glance always shows perl processes are occupying majority of the CPU resource. It is causing slower... (2 Replies)
Hi all,
i have a peice of Perl script like this:
foreach (@line) {
@tmp = split /;/,$_;
#print "Line is: $_\n";
switch($tmp){
case m/p60/i {
push @p60, , $tmp ];
... (7 Replies)
Help needed urgently please.
I have a large file - a few hundred thousand lines.
Sample
CP START ACCOUNT
1234556
name 1
CP END ACCOUNT
CP START ACCOUNT
2224444
name 1
CP END ACCOUNT
CP START ACCOUNT
333344444
name 1
CP END ACCOUNT
I need to split this file each time "CP START... (7 Replies)
This basic code works.
I have a very long list, almost 10000 lines that I am building into the array. Each line has either 2 or 3 fields as shown in the code snippit. The array elements are static (for a few reasons that out of scope of this question) the list has to be "built in".
It... (5 Replies)
Discussion started by: sumguy
5 Replies
LEARN ABOUT REDHAT
ctrsna
CTRSNA(l) ) CTRSNA(l)
NAME
CTRSNA - estimate reciprocal condition numbers for specified eigenvalues and/or right eigenvectors of a complex upper triangular matrix T
(or of any matrix Q*T*Q**H with Q unitary)
SYNOPSIS
SUBROUTINE CTRSNA( JOB, HOWMNY, SELECT, N, T, LDT, VL, LDVL, VR, LDVR, S, SEP, MM, M, WORK, LDWORK, RWORK, INFO )
CHARACTER HOWMNY, JOB
INTEGER INFO, LDT, LDVL, LDVR, LDWORK, M, MM, N
LOGICAL SELECT( * )
REAL RWORK( * ), S( * ), SEP( * )
COMPLEX T( LDT, * ), VL( LDVL, * ), VR( LDVR, * ), WORK( LDWORK, * )
PURPOSE
CTRSNA estimates reciprocal condition numbers for specified eigenvalues and/or right eigenvectors of a complex upper triangular matrix T
(or of any matrix Q*T*Q**H with Q unitary).
ARGUMENTS
JOB (input) CHARACTER*1
Specifies whether condition numbers are required for eigenvalues (S) or eigenvectors (SEP):
= 'E': for eigenvalues only (S);
= 'V': for eigenvectors only (SEP);
= 'B': for both eigenvalues and eigenvectors (S and SEP).
HOWMNY (input) CHARACTER*1
= 'A': compute condition numbers for all eigenpairs;
= 'S': compute condition numbers for selected eigenpairs specified by the array SELECT.
SELECT (input) LOGICAL array, dimension (N)
If HOWMNY = 'S', SELECT specifies the eigenpairs for which condition numbers are required. To select condition numbers for the j-th
eigenpair, SELECT(j) must be set to .TRUE.. If HOWMNY = 'A', SELECT is not referenced.
N (input) INTEGER
The order of the matrix T. N >= 0.
T (input) COMPLEX array, dimension (LDT,N)
The upper triangular matrix T.
LDT (input) INTEGER
The leading dimension of the array T. LDT >= max(1,N).
VL (input) COMPLEX array, dimension (LDVL,M)
If JOB = 'E' or 'B', VL must contain left eigenvectors of T (or of any Q*T*Q**H with Q unitary), corresponding to the eigenpairs
specified by HOWMNY and SELECT. The eigenvectors must be stored in consecutive columns of VL, as returned by CHSEIN or CTREVC. If
JOB = 'V', VL is not referenced.
LDVL (input) INTEGER
The leading dimension of the array VL. LDVL >= 1; and if JOB = 'E' or 'B', LDVL >= N.
VR (input) COMPLEX array, dimension (LDVR,M)
If JOB = 'E' or 'B', VR must contain right eigenvectors of T (or of any Q*T*Q**H with Q unitary), corresponding to the eigenpairs
specified by HOWMNY and SELECT. The eigenvectors must be stored in consecutive columns of VR, as returned by CHSEIN or CTREVC. If
JOB = 'V', VR is not referenced.
LDVR (input) INTEGER
The leading dimension of the array VR. LDVR >= 1; and if JOB = 'E' or 'B', LDVR >= N.
S (output) REAL array, dimension (MM)
If JOB = 'E' or 'B', the reciprocal condition numbers of the selected eigenvalues, stored in consecutive elements of the array.
Thus S(j), SEP(j), and the j-th columns of VL and VR all correspond to the same eigenpair (but not in general the j-th eigenpair,
unless all eigenpairs are selected). If JOB = 'V', S is not referenced.
SEP (output) REAL array, dimension (MM)
If JOB = 'V' or 'B', the estimated reciprocal condition numbers of the selected eigenvectors, stored in consecutive elements of the
array. If JOB = 'E', SEP is not referenced.
MM (input) INTEGER
The number of elements in the arrays S (if JOB = 'E' or 'B') and/or SEP (if JOB = 'V' or 'B'). MM >= M.
M (output) INTEGER
The number of elements of the arrays S and/or SEP actually used to store the estimated condition numbers. If HOWMNY = 'A', M is
set to N.
WORK (workspace) COMPLEX array, dimension (LDWORK,N+1)
If JOB = 'E', WORK is not referenced.
LDWORK (input) INTEGER
The leading dimension of the array WORK. LDWORK >= 1; and if JOB = 'V' or 'B', LDWORK >= N.
RWORK (workspace) REAL array, dimension (N)
If JOB = 'E', RWORK is not referenced.
INFO (output) INTEGER
= 0: successful exit
< 0: if INFO = -i, the i-th argument had an illegal value
FURTHER DETAILS
The reciprocal of the condition number of an eigenvalue lambda is defined as
S(lambda) = |v'*u| / (norm(u)*norm(v))
where u and v are the right and left eigenvectors of T corresponding to lambda; v' denotes the conjugate transpose of v, and norm(u)
denotes the Euclidean norm. These reciprocal condition numbers always lie between zero (very badly conditioned) and one (very well condi-
tioned). If n = 1, S(lambda) is defined to be 1.
An approximate error bound for a computed eigenvalue W(i) is given by
EPS * norm(T) / S(i)
where EPS is the machine precision.
The reciprocal of the condition number of the right eigenvector u corresponding to lambda is defined as follows. Suppose
T = ( lambda c )
( 0 T22 )
Then the reciprocal condition number is
SEP( lambda, T22 ) = sigma-min( T22 - lambda*I )
where sigma-min denotes the smallest singular value. We approximate the smallest singular value by the reciprocal of an estimate of the
one-norm of the inverse of T22 - lambda*I. If n = 1, SEP(1) is defined to be abs(T(1,1)).
An approximate error bound for a computed right eigenvector VR(i) is given by
EPS * norm(T) / SEP(i)
LAPACK version 3.0 15 June 2000 CTRSNA(l)