<div dir="ltr"><div dir="ltr">In addition to what Even mentioned, QGIS might also hit some performance issues/bugs on the new platform. For example, the rule-based rendering with expressions that contains LIKE will make QGIS project completely unusable on iOS:<div><a href="https://github.com/lutraconsulting/input/issues/433">https://github.com/lutraconsulting/input/issues/433</a></div><div><br></div><div>This could be an inefficient way of how the expression engine handles LIKE and has not shown up in other platforms. So in addition to making the binaries available, we should be prepared for some strange new issues propping up on the new platform!</div><div><br></div><div>Kind regards</div><div>Saber</div><div><br><div><br></div></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, 24 Jun 2020 at 14:51, Andreas Neumann <<a href="mailto:a.neumann@carto.net">a.neumann@carto.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div>
<p>Hi,</p>
<p>Yes, I also heard about the better energy efficiency of the arm
processor. That's probably the main reason why typical mobile
devices almost never run on Intel processors. What effect the
change to arm will have performance wise, esp. when libraries
aren't yet optimized for that processor, is another matter.</p>
<p>Even already confirmed that some gdal algorithms are optimized
for Intel only, so far.<br>
</p>
<p>And it will be significant work for some (Peter?) and will
probably need additional funding to do this work.</p>
<p>I don't blame Apple on this. It's a good move if hardware will go
greener because of this. But I expect QGIS to perform worse on
MacOS arm because of this change initially, until more
optimizations towards arm processors are in place.<br>
</p>
<p>Andreas<br>
</p>
<div>Am 24.06.20 um 15:20 schrieb Tim
Sutton:<br>
</div>
<blockquote type="cite">
Hi
<div><br>
</div>
<div><br>
<div><br>
<blockquote type="cite">
<div>On 24 Jun 2020, at 11:52, Andreas Neumann <<a href="mailto:a.neumann@carto.net" target="_blank">a.neumann@carto.net</a>>
wrote:</div>
<br>
<div>
<div>
<p>Hi Peter,</p>
<p>Thanks for this feedback.</p>
<p>I remember when Apple switched from PowerPC
to Intel that they had kind of
compatibility/abstraction layer that allowed old
software to work on the new intel platform. Are there
similar plans with the switch to arm?</p>
<div><br>
</div>
</div>
</div>
</blockquote>
<div><br>
</div>
<div>Yes they will support application bundles that ship both
ARM and Intel architecture (“Universal Binary”) - see <a href="https://en.wikipedia.org/wiki/Universal_binary" target="_blank">https://en.wikipedia.org/wiki/Universal_binary</a></div>
<div><br>
</div>
<div>They will continue to support their Intel based machines
for years to come (no specific end of life indicated yet
that I have seen) but they expect all new hardware to be
sold to be based on ARM within 2 years.</div>
<div><br>
</div>
<div>I wouldn’t bash Apple on this - Intel have been slow at
rolling out small nanometer architectures and the whole
world is moving towards ARM - Windows is already available
for ARM though they kinda fluffed it. Plus they are a
company who likes to periodically advance their platform
with breaking changes - just like we did going from QGIS 2
to QGIS 3.</div>
<div><br>
</div>
<div>Apple are good at making their developer tools work
nicely at compiling software for the hardware they support.
Since long ago Marco Bernasocchi started making QGIS ARM
friendly, hence QGIS for Android, QField and INPUT.</div>
<div><br>
</div>
For me I welcome this - the ARM chips will use less power when
under low loads (better green footprint) and the new platform
promises being able to run iOS apps directly on macOS so e.g.
we can run INPUT straight on the desktop if we want to use a
lightweight QGIS (ok yes I know INPUT could already be
compiled for macOS but not run using the same package as iOS
built one).</div>
<div><br>
</div>
<div>Regards</div>
<div><br>
</div>
<div>Tim</div>
<div><br>
</div>
<div><br>
<blockquote type="cite">
<div>
<div>
<p><font size="-1">Andreas</font><br>
</p>
<div>Am 24.06.20 um 11:53
schrieb Peter Petrik:<br>
</div>
<blockquote type="cite">
<div dir="ltr">
<div dir="ltr">Hi,
<div><br>
</div>
<div>As building on iOS already works (<a href="https://github.com/lutraconsulting/input-sdk/tree/master/ios" target="_blank">https://github.com/lutraconsulting/input-sdk/tree/master/ios</a>),
I imagine it would be possible to run another
architecture build for MacOS with a similar
approach. It is in Apple's interest to
facilitate transition to developers. To evaluate
how hard it would be, that is more tricky at
this point. First of all, Qt has to support this
new architecture, I haven't found a statement
from them yet if they plan it and when. So even
Qt supports it (hopefully from Qt5 releases and
not Qt6), we have to build all the deps with the
new architecture, which takes some time to
create recipes. And of course find a hardware
where it all can be built (probably another
machine , yes). Not saying that it is very
frustrating to do development of such a new
package if you do not own such hardware
yourself...</div>
<div><br>
</div>
<div>P. </div>
<div><br>
</div>
</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Wed, Jun 24,
2020 at 11:33 AM Régis Haubourg <<a href="mailto:regis.haubourg@gmail.com" target="_blank">regis.haubourg@gmail.com</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div dir="ltr">
<div>Hi Andreas, <br>
</div>
<div>I'm also worried about this move.</div>
<div><br>
</div>
<div>But one way to forward the cost to
Apple is now to stop buying macs. <br>
</div>
<div>Sorry to troll, but the vendor
lockin' nightmare they are building is not of
the same nature as of the powerpc era. <br>
</div>
<div>I sold mine because they stopped
to support it though it worked very well on
the hardware side. And switching to linux on
Mac is made hard on purpose.. > never again
for me, even if they do really good stuff. <br>
</div>
<div>I found in LENOVO some durable
hardware, easy to repair, hardware that works
nicely and avoid me to trash a working
computer. <br>
</div>
<div>Best</div>
<div>Régis<br>
</div>
<div><br>
</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">Le mer. 24
juin 2020 à 11:11, Andreas Neumann <<a href="mailto:a.neumann@carto.net" target="_blank">a.neumann@carto.net</a>> a
écrit :<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div style="font-size:10pt;font-family:Verdana,Geneva,sans-serif">
<p>Hi all, esp. Peter,</p>
<p>So I wonder what the new
announcement of Apple switching everything
from Intel to arm architecture will mean
for our project? According to Apple they
will switch all of their devices to arm
over the next 2 years.</p>
<p>Will it be a lot of work to
adapt the build system to the new
processor architecture? It will probably
mean that we will need an additional Mac
build server for arm architecture in our
infrastructure and will have to provide
packages for both systems for many years
to come ...</p>
<p>Not so nice for us as a project
- can we forward these costs to Apple for
that move?</p>
<p>Greetings,<br>
Andreas</p>
</div>
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to connect. </span><a href="https://calendly.com/timlinux/30min" target="_blank">Here's my calendar link</a><span style="color:rgb(102,106,115);font-family:"Proxima Nova",sans-serif;font-size:14px;text-align:left;background-color:rgb(255,255,255)"> to make
finding time easy.</span></div>
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