Re: what's a bad array tag ?

On Oct 18, 2008, at 11:21 PM, Gergely Buday wrote:

>> smlnj gets kind of grumpy when you start pushing it hard (at least on
>> the mac).
>>
>> So this looks bad:
>>
>> /usr/local/smlnj/bin/sml: Fatal error -- bad array tag 0, obj =
>> 0x100c0004, desc = 0x6e696c00
>>
>> New one.
>> Can anyone enlighten me on the potential causes ?
>
> What do you mean by pushing it hard? Allocating large vectors?
>

1Meg elements (reals) is large ?  The gc is doing a lot of work, it's  
about 30% of my run time.  I probably need to quit using vectors and  
destructively update an array instead.

Mostly it's number crunching which is running for awhile, about 2  
hours for each curve that I need.

I have some nlffi, i.e. malloc, allocation going on also, which  
probably isn't helping.

This is the first time I've seen this problem, however this was also  
the first time that I let the program run as long as it did.  The  
system monitor doesn't indicate any memory leaks, so I'm not  
convinced this is memory related, but that error message sure makes  
me think it is.

Just wish I had more information to go on to figure out what happened.

Brian


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