That’s a very interesting multi-core test, Moose. It seems to show that the
improvement in performance peaks at 5 cores. My iMac (a late-2013 model) runs
4 cores in one CPU (i5) so its performance is quite reasonable, for the few
operations that I use Photoshop for. I now use Capture One for my Raw
conversions and cataloguing and it’s pretty swift – once it has started up.
I would still recommend MacOS, Chuck, although we now have W7 at work on MOD
machines and that runs reasonably well as a standalone system. The problems
that we have are entirely because of the size and sluggishness of the UK-wide
network coupled with the security measures that have been instituted. Oh, and
MOSS*! Who could have possibly thought that running a filing system through a
browser on a massive and sluggish network would be good for productivity?
Chris
*Microsoft Office Sharepoint Services (I think).
> On 28 Jul 16, at 21:54, Moose <olymoose@xxxxxxxxx> wrote:
>
> On 7/28/2016 4:49 AM, Chuck Norcutt wrote:
>> I've pretty much decided that Win 10 is not for me but whatever replaces my
>> Win 7 must run Photoshop.
>
> Why the worry/rush? Many huge companies have only recently moved to Win7.
> It's going to be supported for a long time. I'll be following my usual
> policy, upgrading OS when it comes installed on a new machine (or I install
> fresh on a machine I've put together). As I need the XP virtual machine of
> Win7 Pro for business, I won't convert my desktop, and I can't see what
> advantage 'upgrading' my 6+ year old netbook+ would have.
>
>> I dipped my toe into the Apple universe last December with an iPhone 6s.
>
> We have two iPhones and two iPads. I'm not sure what that has to do with
> choice of computer and OS to run PS. Mac and iThingies, iOS and MacOS are
> essentially only related by parent company.
>
>> That has caused me to at least consider a Mac Mini but the price is very
>> high for a fixed configuration which dates to 2014. I don't know but
>> suspect that much of Photoshop would not utilize the multi-threading
>> capabilities of an Intel i7.
>
> There's a lot of info/blather about that around. This test uses a pretty good
> looking testing procedure to show that, while many PS functions are indeed
> single threaded, many of the most processor intensive ones are multi-threaded
> and increase 3-4 times in speed, occasionally more, with the first few cores.
> <https://www.pugetsystems.com/labs/articles/Adobe-Photoshop-CC-Multi-Core-Performance-625/>
>
> Several of the functions that are sped up a lot are ones I use a great deal.
> I've also been quite impressed at the speed with which my machine can
> convert/load a dozen Raw files in a stack and align them, then merge them.
> That's a LOT of calculations. No, it's not instant, but not that slow,
> either, considering what it is doing. My recollection of stacking and
> creating panoramas on older PS and a slower, single threaded machine is of a
> great deal more work on my part and lots and lots more processing time.
>
> I'm running the (next?) prior version of the processor he recommends; Intel
> Core i7 4770K 3.5GHz Quad Core (8 threads), (apparently still a current
> model) with 16 GB of RAM.
>
> This makes sense if one assumes that Adobe is not entirely brain dead. Just
> as in the old days developers would identify the parts of an app that had the
> greatest negative effect on overall performance and code them in assembler,
> it appears Adobe may have targeted similarly in choosing which functions to
> expand to multi-threading.
>
> I gather that converting a process to multi-threading is not a simple thing
> like changing a compiler option, but requires at the least lots of recoding,
> and often starting from scratch.
>
>> So, in selecting a processor, I would try to maximize single thread
>> performance which means clock speeds of 3GHz or more. But the only way to
>> get that clock speed in a Mac Mini it to buy the i7 version at $1300.
>>
>> That leaves a custom built machine running Linux with Wine or maybe a
>> virtual Win 7 to run Photoshop.
>
> I still don't understand the rush to leave Win7. It's current, stable and
> runs PSCC well.
>
>> Anyone have experience with this and a recommendation? Am I wrong about the
>> degree of multi-threading in Photoshop?
>
> Mostly, yes, you are wrong, perhaps not on number of m-t processes, but on
> their significance to practical use.
>
> Hetero Tasking Moose
>
> --
> What if the Hokey Pokey *IS* what it's all about?
> --
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