Op Thu, 24 Jul 2008 08:09:14 -0600 schreef swami.kmb <swami.kmb@gmail.com>:
> Dear Friends,
> I am porting eAAC decoder in ARM926EJ-S (ARM9E core)
> The MIPS measurement in simulator and onboard are not same.
> MIPS onboard is higher than in simulator(4 to 6 MIPS)
> can anyone tell me what's the reason behind this?

Because a simulator simulates an entire processor on another processor.   
The clocks are probably not the same, and maybe the simulator clock isn't  
even constant.

> MIPS are measured onboard with cache disabled(at this point,will be
> enabled later)
>
> The reason i think of:
> 1.Stack/heap/bss section/state variables are not getting fitted in
> internal memory

Is there a difference between the internal memories?

> 2.because of page fault?if so how can i avoid it?(ARM926EJ-S has MMU)

There should be a way to detect and log page faults.

> 3.Is there any way to modify the linker file for ARM,i feel  
> stack/heap/bss section is not getting fitted in internal mem

Use a text editor.

> Finally,
> will there be any difference in MIPS, when the project is built in debug
> and release mode?

That depends on the differences between debug and release mode.



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Dear Friends,
I am porting eAAC decoder in ARM926EJ-S (ARM9E core)
The MIPS measurement in simulator and onboard are not same.
MIPS onboard is higher than in simulator(4 to 6 MIPS)
can anyone tell me what's the reason behind this?
MIPS are measured onboard with cache disabled(at this point,will be
enabled later)

The reason i think of:
1.Stack/heap/bss section/state variables are not getting fitted in
internal memory

2.because of page fault?if so how can i avoid it?(ARM926EJ-S has MMU)

3.Is there any way to modify the linker file for ARM,i feel stack/heap/bss
section is not getting fitted in internal mem

Finally,
will there be any difference in MIPS, when the project is built in debug
and release mode?