| Re: objects, crashes, and negative memory oh my [message #51646 is a reply to message #51645] |
Fri, 01 December 2006 07:42   |
Paolo Grigis
Messages: 171
Registered: December 2003
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Senior Member |
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Just to be sure there's no hardware problem, you might
want to do a tough memory test (e.g. memtest86) to see
if the physical RAM is ok...
Ciao,
Paolo
Pete Warner wrote:
> Some more information:
> I'm running 32 bit IDL 6.3 on Windows 2000 with only 512MB of non
> imaginary RAM. The file I'm reading and storing data from with this
> object is only about 2MB, and the Windows Task Manager does not show
> idlde.exe using unusual amounts of memory.
>
> If I step through my obj::destroy routine IDL locks up only after the
> final END statement or if I try to use /RETALL before the end of the
> cleanup routine. Once it is locked up I must use Task Manager to end
> idlde.exe.
>
> If instead of returning to $MAIN$ I type .reset I get 1 to 3 "The
> instruction at bla referenced memory at bla. The memory could not be
> read/written. Click on OK to terminate the program" messages and I'm
> back to the desktop.
>
> I'll find out what tech support can do for me here.
>
>
> On Dec 1, 8:27 am, "Pete Warner" <warner.p...@yahoo.com> wrote:
>
>> I guess I've been thinking about asking for an upgrade. Maybe I already
>> got it. Anybody know if Windows Vista can address 16 exabytes or will I
>> need Linux for that?
>>
>> On Dec 1, 2:53 am, Paolo Grigis <pgri...@astro.phys.ethz.ch> wrote:
>>
>>
>>> Paolo Grigis wrote:
>>
>>>> Pete Warner wrote:
>>
>>>> >Hopefully one day I'll join the crowd of you helpful people who answer
>>>> >questions instead of coming up with them, but that day is not today.
>>
>>>> >I've got an object that should hold and organize a large number of
>>>> >arrays and pointers and arrays of pointers and then clean them up when
>>>> >I'm done. I know I have enough memory for the data in question because
>>>> >I can load it without using pointers. I want the objects and pointers
>>>> >for flexibility and to make the overall program easier to work with.
>>
>>>> >The problem is that I'm crashing IDL. I create the object, and then
>>>> >destroy it to check for leaks. Using help, /heap_variables I show 0
>>>> >pointers and objects. Then if I create and destroy it again IDL locks
>>>> >up or crashes to desktop with some memory errors. I figured there must
>>>> >be crazy leaking going on but I can't find it.
>>
>>>> >1. Restart computer
>>>> >2. Load IDL
>>>> >3. Load project with objects
>>>> >4. Compile project
>>>> >5. IDL> print, memory(/l64, /current)
>>>> > 845185
>>>> >6. IDL> test = obj_new('mtgv_lodat', 'model.txt',
>>>> >'c:/rsi/projects/gicvu idl/system models/')
>>>> >7. IDL> print, memory(/l64, /current)
>>>> > 412234
>>>> >8. IDL> obj_destroy, test
>>>> >9. IDL> print, memory(/l64, /current)
>>>> > -1077816
>>
>>>> Maybe is not negative, but just overflowing for
>>>> 18446744073708473800LL... now that's a nice
>>>> rig you have, just one megabyte short of 4 exabytes ;-)well, that should have been 16...
>>
>>>> Ciao,
>>>> Paolo
>>
>>>> >If I repeat the process starting at 5 IDL blows up after a repetition
>>>> >or two. If anyone has had this problem before and knows a solution I'd
>>>> >be grateful. I couldn't find a solution searching the board, the IDL
>>>> >help, or the ITTVIS IDL memory allocation FAQs.
>>
>>>> >On the other hand, if anyone wants to buy a program that uses negative
>>>> >memory this is your lucky day.
>
>
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