I run a processor-intense mathematic application that takes several days to complete. Win2k SP4, 3.0Ghz Pentium, 4GB ddr2 ram, mobo=Intel D975BX. I would like to increase the speed of the application. I notice that if it is the only running process, it runs at 50% (task manager) against 50% idle. If I add a quiet process, it still runs at 50%, the quiet process runs close to 50%, and idle drops to about 1%. I surmise that Win2k limits applications to a max of 50%. Can someone advise on increasing the application percentage to, say, 90%?

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On Tuesday, February 26, 2008 at 5:59 am, Steven wrote:

>I run a processor-intense mathematic application that takes several days to complete. 

>Win2k SP4, 3.0Ghz Pentium, 4GB ddr2 ram, mobo=Intel D975BX. I would like to increase 

>the speed of the application. I notice that if it is the only running process, it 

>runs at 50% (task manager) against 50% idle. If I add a quiet process, it still 
runs 

>at 50%, the quiet process runs close to 50%, and idle drops to about 1%. I surmise 

>that Win2k limits applications to a max of 50%. Can someone advise on increasing 

>the application percentage to, say, 90%? 

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W2K or XP will not put a processor use cap on the application.  This is the coding 
of the application.  Example..  DVD Shrink will run one/two or more processors at 
100%, using the "unused" CPU cycles.  It also has a setting to run low priority so 
as to not make the system unresponsive to other applications and demands, but will 
still use the unused CPU cycles so that the processors will still run at 100% load.

A program that I run in the background to work on public projects only runs one processor 
and not on two, so only looks like 50% of the CPU capacity is being used.  After 
many questions from people about why it is like this, they indicated that it wasn't 
coded to run multithreaded and they had no intentions of rewriting the application 
to do so.  You need to run your question past the developers who wrote the application.

Your application wasn't coded to run as such or wasn't coded properly for multi-threaded 
processing and/or will only use one processor in a multiprocessor system, thereby 
it will only show up to 50% use on a system that has multiple physical (or dual/quad 
core) or virtual CPU(s).. 

You can use the Task Manager to increase the priority of the application but it won't 
help any, if at all, if the application wasn't coded to correctly multi-thread.  
It will only reduce the responsiveness of your system and may crash the application 
IME. 







On Tuesday, February 26, 2008 at 5:59 am, Steven wrote:

>I run a processor-intense mathematic application that takes several days to complete. 

>Win2k SP4, 3.0Ghz Pentium, 4GB ddr2 ram, mobo=Intel D975BX. I would like to increase 

>the speed of the application. I notice that if it is the only running process, it 

>runs at 50% (task manager) against 50% idle. If I add a quiet process, it still 
runs 

>at 50%, the quiet process runs close to 50%, and idle drops to about 1%. I surmise 

>that Win2k limits applications to a max of 50%. Can someone advise on increasing 

>the application percentage to, say, 90%? 

[Reply or follow-up to this message]

Thank you so much for the explanation. It is very likely that the application does no better in a multiple processor environment. Very grateful for your help.


On Tuesday, February 26, 2008 at 5:59 am, Steven wrote:
>I run a processor-intense mathematic application that takes several days to complete.
>Win2k SP4, 3.0Ghz Pentium, 4GB ddr2 ram, mobo=Intel D975BX. I would like to increase
>the speed of the application. I notice that if it is the only running process, it
>runs at 50% (task manager) against 50% idle. If I add a quiet process, it still runs
>at 50%, the quiet process runs close to 50%, and idle drops to about 1%. I surmise
>that Win2k limits applications to a max of 50%. Can someone advise on increasing
>the application percentage to, say, 90%?

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