Matthew Brand wrote:
Hi All,
I don't know much about the subject but when I look at task manager, the CPU
usage only goes up to 25% on the four core processsor. Is there a
configuration that makes J use all the cores?
As I say, I don't know much about it but does this mean that it should be
possible:
>From
http://en.wikipedia.org/wiki/J_(programming_language)<http://en.wikipedia.org/wiki/J_(programming_language>:
"Being an array programming
language<http://en.wikipedia.org/wiki/Array_programming_language>,
J is very terse and powerful, and is most suited to
mathematical<http://en.wikipedia.org/wiki/Mathematical>and
statistical <http://en.wikipedia.org/wiki/Statistical> programming,
especially when performing operations on
matrices<http://en.wikipedia.org/wiki/Matrix_(mathematics)>.
J is a MIMD <http://en.wikipedia.org/wiki/MIMD> language."
See:
http://en.wikipedia.org/wiki/MIMD
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As I say, I don't know much about it but does this mean that it should be
possible:
Tweeking multiprocessing, multiprogramming, multiuser and other complex
systems are NOT the usual subject of succesful internet 'help' queries.
Never mind... Go back to basics.
[0] make shure you fully understand the nature of the task manager
[1] reduce the number of processes (or processors) to ONE and then note
and record the behaviour of the system performance parameters that
concern you as it is changed.
[2] change one (and one only) parameter (variable) and try again. If
this is unsuccessful consider changing another. Play with the variables
in your mind as you fall asleep.
[3] remove yourself from the problem go for a walk or some other
displacement activity.
good luck... JCF
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