Scripts run on server or on client?

I write a very simple script to test it. When it loops from 1 to 1000, SL can give the result, but very slowly. It seems that the script is running on the server. But if the loops go higher to 10000, there is nothing to display, not even an alert message. But the program has been compiled successfully and uploaded completely.

Even a simple script like this could not be found wrong easily. How can we find what's going on with more complicated scripts in SL?

All LSL scripts run on the server (sim).

It seems that the server will not process the cript if it is too resouce consuming. Is that right?
If it is true is there any criterial we could know about?

Unfortunately, no.

pls try following script. You can get "Hello, Avatar!" in LSLEditor, but you get nothing in SL.

default
{
state_entry()
{
for(integer i = 1; i < 100000000; i++ )
;
llSay(0, "Hello, Avatar!";
}
}

Loops tend to be slow in LSL. Even your simple loop which does nothing more than increment i and test if it is less than a constant value can take *much* longer to execute on an SL sim than on your local machine, since your local machine doesn't have x-thousand other LSL scripts, physics, agent updates, etc. using up processing cycles in between your loops. Yes, if you left it running long enough (and assuming the sim doesn't crash during that time), it would eventually complete it's hundred-millionth loop and greet you politely, if generically.

You mean sim will excute the code until it's down? I wish nobody will take advantage of it.

Why wouldn't it?

[Edit: I didn't mean to say that your hundred-million-iterations loop would in any way *cause* a sim to crash, if that's how you read it... I just meant if the sim didn't *happen* to crash while it was running your loop, and hence loose it's place]

That's because LSL Editor doesn't parse the code correctly and pseudo-executes the wrong code. Your code has a bug in it: you put a semicolon right after the for statement. Try this code instead:

default
{
state_entry()
{
for(integer i = 1; i < 100000000; i++ )
llSay(0, "Hello, Avatar!";
}
}