[Vm-dev] Spur corrupts large images when saving

[Eliot Miranda]

Hi Yuriy,

_,,,^..^,,,_ (phone)

> On Mar 8, 2016, at 2:43 AM, Yuriy Tymchuk <yuriy.tymchuk at me.com> wrote:
> 
> Yes, I’m using VMMaker.oscog-EstebanLorenzano.1676

and how about the VMs in http://www.mirandabanda.org/files/Cog/VM/latest/?  If you're on Mac you would use http://www.mirandabanda.org/files/Cog/VM/latest/CogPharoSpur.app-16.08.3632.tgz.  Just check if it starts up.  The VM is missing some plugins and support libraries.  But it definitely has the problem fixed.

Also Yuriy, could you purine of the images that won't start up somewhere where I can download it to take a look?

> 
> Thank you
> 
>> On 08 Mar 2016, at 06:08, Eliot Miranda <eliot.miranda at gmail.com> wrote:
>> 
>> Hi Yuriy,
>> 
>>     what's the version info in that VM?  I expect this is the same bug I fixed in
>> 
>> CogVM binaries as per VMMaker.oscog-eem.1679/r3602
>>  ...
>> Fix start up of images containing >= 16 segments.  The old code assumed
>> numSegments < 16 and failed to grow the segment records, resulting in objects
>> in segments greater than 15 to not be swizzled, and a resulting crash.
>> 
>> 
>> _,,,^..^,,,_ (phone)
>> 
>>> On Mar 7, 2016, at 1:32 PM, Yuriy Tymchuk <yuriy.tymchuk at me.com> wrote:
>>> 
>>> Dear vm developers,
>>> 
>>> I’ve encountered multiple times an issue when my images cannot be opened after saving (only on spur). I think that this happens when image is large, and the following script results in a corrupt image almost 100%:
>>> 
>>> 
>>> curl get.pharo.org/50+vm | bash
>>> 
>>> ./pharo Pharo.image --no-default-preferences eval --save \
>>>   "Smalltalk globals at: #ReallyBigArray put: (ByteArray new: 1024*1024*1000). 'Done'"
>>> 
>>> ./pharo Pharo.image printVersion
>>> 
>>> 
>>> The last line is there just to make image do something and for me it fails all the times. I hope that this can help to troubleshoot the issue with the vm.
>>> 
>>> Also here are my system & hardware specs:
>>> 
>>> System Version:	OS X 10.11.3 (15D21)
>>> Model Identifier:	MacBookPro11,5
>>> Processor Name:	Intel Core i7
>>> Processor Speed:	2.8 GHz
>>> Total Number of Cores:	4
>>> Memory:	16 GB
>>> 
>>> Cheers!
>>> Uko
> 
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