[ANN] Squeak 5

On 12.08.2015, at 20:55, Eliot Miranda <[hidden email]> wrote:

> Hi All,
>
>
>     Fabio's kindly done most of the changes.  But some questions remain for more general discussion.  See below.
>
> Fabio,  thanks so much for doing this, and so quickly!
>
> On Tue, Aug 11, 2015 at 8:51 PM, Eliot Miranda <[hidden email]> wrote:
> Hi All,
>
>     who will update http://squeak.org/downloads/ to include the 5.0 release?
>
> a) I suggest that the 5.0 all-in-one have a line in the left-hand table that includes the 4.6 release and that it precede the 4.6 release in the list.
>
> Done.
>
>
> b) the Trunk link points to TrunkImage.zip which contains a non-Spur image.
>
> So this is the biggie.  What should we do?
>
> - add a Trunk 5.0 build with a different link?  (Noooooo)
>
> - change  http://build.squeak.org/job/SqueakTrunk to build what it says (Yessss please, who can do this?)

Done: build.squeak.org/job/Trunk/
But as I said several times, Spur/trunk test just crash for month…

>
> - add a Squeak 4.6 build job?  Is that even worth it any more considering 4.6 is released and stable?  If it is then what should it build?  David?
>
>
> c) Spur VMs need to be linked to by an added line in the Virtual Machines list.
>
> Not applicable.  the VM links point to the root of my site so they effectively point to both old and Spur VMs.
>
>
> d) Spur imagers need to be included in the Image and Changes list under Custom Installation
>
> Done.
>
>
>
> e) The SqueakV50.sources file also needs to be included in the Current Sources list.
>
> Done.
>
>
> f) we could start a History list for the 5.0 line
>
> This is probably quite a big reorg on the page and not urgent.
>
>
> So there are a few things to fix before 5.0 is freely downloadable.
>
> On Tue, Aug 11, 2015 at 8:23 PM, Chris Muller <[hidden email]> wrote:
> In the 17 months since Squeak 4.5 was released, a huge development
> effort took place to create the next generation virtual-machine for
> the Squeak / Pharo / Newspeak family of programming systems.  Squeak
> is the modern incarnation of the Smalltalk-80 programming environment
> originally developed at the Xerox PARC.
>
> "Squeak 5" introduces this new VM and associated new memory model,
> collectively referred to as "Spur".  Presented [1] by Eliot Miranda
> and Clément Béra at the 2015 International Symposium on Memory
> Management, this new VM affords Squeak applications a significant
> boost in performance and memory management.  Among other
> optimizations, the #become operation no longer requires a memory scan.
> Object pinning and ephemerons are also now supported.  The release
> notes [2] provide more details.
>
> The new memory model requires a new image file format.  Although this
> new format results in about a 15% increased memory requirement for the
> same number of 4.x objects, a new segmented heap allows memory to be
> given back to the OS when its no longer needed, a great benefit for
> application servers.
>
> As forward compatibility is as important to the Squeak community as
> backward compatibility, Squeak 5 is delivers an image with identical
> content as the recent 4.6 release.  Although this new Squeak 5 VM
> cannot open images saved under the prior 4.x Cog format, objects and
> code can be easily exported from the 4.x image and then imported into
> Squeak 5.  Applications whose code runs strictly above the Smalltalk
> meta layer will prove remarkably compatible with the new format, most
> applications will require no changes whatsotever.
>
> Squeak 5 is the result of monumental effort by a tiny group of very
> talented people, but its also just the beginning of yet a new effort;
> Spur is just a stepping stone to a more ambitious goals planned over
> the next five years.
>
> [1] -- A Partial Read Barrier for Efficient Support of Live
> Object-oriented Programming
> http://conf.researchr.org/event/ismm-2015/ismm-2015-papers-a-partial-read-barrier-for-efficient-support-of-live-object-oriented-programming
>
> [2] -- Squeak 5 Release Notes
> http://wiki.squeak.org/squeak/6207

Hi all
On 13.08.2015, at 02:15, Eliot Miranda <[hidden email]> wrote:

> Hi Tobias,
>
>    forget that. I found it.  THis right?
>
> Trunk test suite for Spur
> Using existing cogspur r.3410
> cp -r /var/lib/jenkins/workspace/Trunk/default/target/cogspur.r3410 /tmp/d20150812-28620-etbikj
>   image test suite
> VM: /tmp/d20150812-28620-etbikj/cogspur.r3410/cogspurlinuxht/bin/squeak
> /tmp/d20150812-28620-etbikj/cogspur.r3410/cogspurlinuxht/bin/squeak -version
> /var/lib/jenkins/workspace/Trunk/default/tests.st
> spawning command 0 with timeout 1800 seconds: "/tmp/d20150812-28620-etbikj/cogspur.r3410/cogspurlinuxht/bin/squeak" "-vm-sound-null" "-vm-display-null" "/var/lib/jenkins/workspace/Trunk/default/target/SpurPostTestTrunkImage.image" "../tests.st"
> (Command started with PID 28643)
> 2015-08-12T23:31:48.17+01:00: Loading Hudson build tools... from /var/lib/jenkins/workspace/Trunk/default/target/HudsonBuildTools.st
> 2015-08-12T23:31:48.388+01:00: Running tests...
> setsockopt: Protocol not available
> setsockopt: Protocol not available
> 28646:error:140770FC:SSL routines:SSL23_GET_SERVER_HELLO:unknown protocol:s23_clnt.c:612:
>
> Recursive not understood error encountered
>
>
> I bet this is ImageSegment related.

It sure is.

        BitmapStreamTests>testMatrixTransform2x3WithImageSegment
sends
        BitmapStreamTests>validateImageSegment

The most strange thing is that I cannot reproduce this on my Mac…
There the test does not crash the image…

Best regards
        -Tobias

>
> On Wed, Aug 12, 2015 at 5:11 PM, Eliot Miranda <[hidden email]> wrote:
> Hi Tobias,
>
> On Wed, Aug 12, 2015 at 12:49 PM, Tobias Pape <[hidden email]> wrote:
>
> On 12.08.2015, at 20:55, Eliot Miranda <[hidden email]> wrote:
>
> > Hi All,
> >
> >
> >     Fabio's kindly done most of the changes.  But some questions remain for more general discussion.  See below.
> >
> > Fabio,  thanks so much for doing this, and so quickly!
> >
> > On Tue, Aug 11, 2015 at 8:51 PM, Eliot Miranda <[hidden email]> wrote:
> > Hi All,
> >
> >     who will update http://squeak.org/downloads/ to include the 5.0 release?
> >
> > a) I suggest that the 5.0 all-in-one have a line in the left-hand table that includes the 4.6 release and that it precede the 4.6 release in the list.
> >
> > Done.
> >
> >
> > b) the Trunk link points to TrunkImage.zip which contains a non-Spur image.
> >
> > So this is the biggie.  What should we do?
> >
> > - add a Trunk 5.0 build with a different link?  (Noooooo)
> >
> > - change  http://build.squeak.org/job/SqueakTrunk to build what it says (Yessss please, who can do this?)
>
> Done: build.squeak.org/job/Trunk/
> But as I said several times, Spur/trunk test just crash for month…
>
> can you point me to the crash?  I'm looking at http://build.squeak.org/job/Trunk/default/lastBuild/#showFailuresLink and see 8 test failures but no crash.
>
>
> >
> > - add a Squeak 4.6 build job?  Is that even worth it any more considering 4.6 is released and stable?  If it is then what should it build?  David?
> >
> >
> > c) Spur VMs need to be linked to by an added line in the Virtual Machines list.
> >
> > Not applicable.  the VM links point to the root of my site so they effectively point to both old and Spur VMs.
> >
> >
> > d) Spur imagers need to be included in the Image and Changes list under Custom Installation
> >
> > Done.
> >
> >
> >
> > e) The SqueakV50.sources file also needs to be included in the Current Sources list.
> >
> > Done.
> >
> >
> > f) we could start a History list for the 5.0 line
> >
> > This is probably quite a big reorg on the page and not urgent.
> >
> >
> > So there are a few things to fix before 5.0 is freely downloadable.
> >
> > On Tue, Aug 11, 2015 at 8:23 PM, Chris Muller <[hidden email]> wrote:
> > In the 17 months since Squeak 4.5 was released, a huge development
> > effort took place to create the next generation virtual-machine for
> > the Squeak / Pharo / Newspeak family of programming systems.  Squeak
> > is the modern incarnation of the Smalltalk-80 programming environment
> > originally developed at the Xerox PARC.
> >
> > "Squeak 5" introduces this new VM and associated new memory model,
> > collectively referred to as "Spur".  Presented [1] by Eliot Miranda
> > and Clément Béra at the 2015 International Symposium on Memory
> > Management, this new VM affords Squeak applications a significant
> > boost in performance and memory management.  Among other
> > optimizations, the #become operation no longer requires a memory scan.
> > Object pinning and ephemerons are also now supported.  The release
> > notes [2] provide more details.
> >
> > The new memory model requires a new image file format.  Although this
> > new format results in about a 15% increased memory requirement for the
> > same number of 4.x objects, a new segmented heap allows memory to be
> > given back to the OS when its no longer needed, a great benefit for
> > application servers.
> >
> > As forward compatibility is as important to the Squeak community as
> > backward compatibility, Squeak 5 is delivers an image with identical
> > content as the recent 4.6 release.  Although this new Squeak 5 VM
> > cannot open images saved under the prior 4.x Cog format, objects and
> > code can be easily exported from the 4.x image and then imported into
> > Squeak 5.  Applications whose code runs strictly above the Smalltalk
> > meta layer will prove remarkably compatible with the new format, most
> > applications will require no changes whatsotever.
> >
> > Squeak 5 is the result of monumental effort by a tiny group of very
> > talented people, but its also just the beginning of yet a new effort;
> > Spur is just a stepping stone to a more ambitious goals planned over
> > the next five years.
> >
> > [1] -- A Partial Read Barrier for Efficient Support of Live
> > Object-oriented Programming
> > http://conf.researchr.org/event/ismm-2015/ismm-2015-papers-a-partial-read-barrier-for-efficient-support-of-live-object-oriented-programming
> >
> > [2] -- Squeak 5 Release Notes
> > http://wiki.squeak.org/squeak/6207