[Vm-dev] how can I build a sista spur 64 vm?

[Robert]

An update.

I fetched and merged the changes in opensmalltalk-vm.
I go to the image directory.
I run updatespur64SistaV1image.sh
Then, as there is no vmmaker script for Sista, I launch # squeak trunk6-sista-64.image &
Goto file list and select the file BuildSqueakSpurTrunkVMMakerImage.st and filein.
An error occurs from MultiByteFileStream(PositionalStream)>>#skipStyleChunk with this error:

#primGetPosition: failed. I think it is in the middle of reading in the BuildSqueakSpurTrunkVMMakerImage.st, as in that is what the MultiByteFileStream is opened upon.

So what do I need to do Sista? Get a VMMaker image with Sista loaded, which is what I thought BuildSqueakSpurTrunkVMMakerImage.st does. But it fails.

k, m

On 3/24/20 2:46 PM, Robert wrote:

> Hi Dave,
>
> I thought I saw something about it. This is great! I'm git stupid, how can I force merge with git to pull the latest vm code, to overwrite my locally generated files? Which version of VMMaker is appropriate?
>
> quotar at ganymede:~/tribe/opensmalltalk-vm$ git pull
> remote: Enumerating objects: 619, done.
> remote: Counting objects: 100% (619/619), done.
> remote: Compressing objects: 100% (61/61), done.
> remote: Total 645 (delta 523), reused 617 (delta 521), pack-reused 26
> Receiving objects: 100% (645/645), 8.11 MiB | 2.30 MiB/s, done.
> Resolving deltas: 100% (526/526), completed with 117 local objects.
> From https://github.com/OpenSmalltalk/opensmalltalk-vm
>    1861db582..00de58438  Cog        -> origin/Cog
>  * [new tag]             202003021730 -> 202003021730
> Updating 1861db582..00de58438
> error: Your local changes to the following files would be overwritten by merge:
>
> I'm excited!
>
> Kindly,
> mumbles
>
> On 3/24/20 2:40 PM, David T. Lewis wrote:
>
>> Hi Cl??ment,
>>
>> Sista works fine on 64 bits :-)
>>
>> Eliot added the necessary image support to Squeak, based on your eariler
>> Pharo implementation. We switched Squeak trunk over to Sista in trunk
>> a few weeks ago, and have had no problems at all. All Squeak development
>> is proceeding with Sista as the default bytecode, and most of us are
>> on 64-bits.
>>
>> So thank you!
>> Dave
>>
>> On Tue, Mar 24, 2020 at 06:58:37PM +0100, Cl??ment B??ra wrote:
>>
>>> Hi Robert,
>>>
>>> I worked on sista and I don't think I have ever tried it on 64 bits. I run
>>> my experiments on x86. My expectation for 64 bits is that you have to write
>>> build files inspired from the 32 bits
>>> sista.spur and the 64 bits cog.spur files. Then you have to run it in the
>>> VM simulator and fix the various few problems you see (likely a few
>>> instructions are not implemented in the
>>> x64 back-end). Then you can build a system. It's not so much work.
>>>
>>> There was a released alpha version of Sista [1], which I used to run the
>>> benchmark of a research paper [2]. If you compile a VM with sources from
>>> that time (recent sources have difference
>>> that will break it), and follow the guidelines from the blog post [1], you
>>> should be able to reproduce the benchmark results from the paper.
>>>
>>> As I remember it, most benchmarks run without crashes at 1.5x and the
>>> development tools could be run for a while without crashes. Debugging and
>>> on-the-fly code changes in sista are
>>> only partially implemented (there's the potential to do it, but one has to
>>> implement it). I would say it is currently in a similar state as the
>>> strongtalk VM [3], while being compatible with
>>> Squeak and other Cog clients.
>>>
>>> I don't know what you mean by operational. If you're looking to experiment
>>> with it, tweak it to run some benchmarks, then you should be able to do it.
>>> If you're looking to deploy an application
>>> on a production VM, then significant work is left to do so (discuss
>>> directly with Eliot if that is the case).
>>>
>>> Have fun with the project :-)
>>>
>>> [1]
>>> https://clementbera.wordpress.com/2017/07/19/sista-open-alpha-release/
>>> [2]
>>> https://hal.inria.fr/hal-01596321/
>>> [3]
>>> http://strongtalk.org/
>>> On Mon, Mar 23, 2020 at 3:43 PM Robert
>>> [<robert.withers at pm.me>](mailto:robert.withers at pm.me)
>>> wrote:
>>>
>>>> I understand that Sista is operational. I would like to try. How can I
>>>> build a Sista vm? I went to linux64x64/squeak.sista.spur and there is a
>>>> file there NotYetImplemented.
>>>>
>>>> I appreciate any guidance.
>>>>
>>>> --
>>>> Kindly,
>>>> Robert
>>>
>>> --
>>> Cl??ment B??ra
>>> https://clementbera.github.io/
>>>
>>> https://clementbera.wordpress.com/
>
> --
> Kindly,
> Robert

--
Kindly,
Robert
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