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Re: Extremely Strange Program Behavior [message #39607 is a reply to message #39517]

Wed, 26 May 2004 08:24

Rick Towler
Messages: 821
Registered: August 1998

Senior Member

"Nigel Wade" wrote...
> David Fanning wrote:
>> Rick Towler writes:
>>
>>
>>> Just out of curiosity, what processor is in this new machine?
>>
>> Well, I'm just borrowing this machine, really. But it is
>> a Dell 8300 with a 3GHz Pentium(R) 4 CPU processor and
>> 1GByte of RAM.

> Have you tried running memtest86 to see if there is a hardware error? It's
> just possible that running IDL twice in quick sucession is causing the
> second execution to use higher physical memory addresses due to memory
> management issues.
>
> It's a reasonably quick test and might save a lot of head scratching.

I would second this. The reason I asked was that the AMD Athlon64/Opterons
are very sensitive to RAM timings and more than a few times I have seen
"Etremely strange program behavior" as a result of marginally compatible
RAM. The P4's aren't as sensitive but you could have gotten a rotten stick
of RAM.

Download the bootable .iso and burn a CD. Boot to the CD and let the test
run while you get a cup of coffee or play some tennis.

>> The IDL thing, though, seems to be unrelated. It is
>> extremely reproducible...

Reproducible on other machines?

-Rick

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[Message index]

		Extremely Strange Program Behavior By: David Fanning on Sun, 23 May 2004 11:15
		Re: Extremely Strange Program Behavior By: Nigel Wade on Wed, 26 May 2004 02:07
		Re: Extremely Strange Program Behavior By: Rick Towler on Wed, 26 May 2004 08:24
		Re: Extremely Strange Program Behavior By: David Fanning on Tue, 25 May 2004 10:54
		Re: Extremely Strange Program Behavior By: Rick Towler on Tue, 25 May 2004 10:40
		Re: Extremely Strange Program Behavior By: Marc R. Reinig on Fri, 28 May 2004 12:34
		Re: Extremely Strange Program Behavior By: Marc R. Reinig on Wed, 26 May 2004 11:25
		Re: Extremely Strange Program Behavior By: David Fanning on Wed, 26 May 2004 10:23

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