July 03, 2009

PS User Group San Jose to meet July 14

The next meeting of the San Jose Photoshop User Group is scheduled for July 14. Group organizer Dan Clark writes,

Photoshop questions? Samples of your Photoshop work? Bring either to our next meeting. We’ll have an evening of Photoshop show and tell, as well as answers to your questions. Let’s see some tough questions and nice work! Please send questions and sample files ahead of time to: dan at weinberg-clark.com

For complete info & directions, check out the event page.

3:27 PM | Permalink | No Comments

Notes about PS printing performance

Recently an iMac user asked about ways to speed up large scan & print jobs in Photoshop:

In your opinion, would a Mac Pro significantly accelerate the processing [while printing]? Is the printing engine in Photoshop multiprocessor aware?

I put the question to Photoshop printing engineer Dave Polaschek, and here’s his reply:

While Photoshop’s printing code isn’t multi-threaded & is mostly disk-bound*, another core may be used by the OS for color management if you’re printing in “Printer Manages Color” mode. More cores won’t hurt.
That said, the disk (or better, disks) in a Mac Pro are significantly faster than the disk in an iMac, which will help since every printed job is spooled to disk. Plus you can put more RAM in a Mac Pro, which will help in preparing the image for printing.
As with most things in Photoshop, the two biggest gains you can get in speed are:
1 – Put in as much RAM as you can afford and the machine can hold. When friends are buying new Macs, I tell them they should have an absolute minimum of 1G of RAM per core, and 2G per core will still be a noticeable improvement over that. For running Photoshop with big images, I’ve found some operations which run over 10x faster since I moved from 4GB to 8GB of RAM in my quad-core Mac Pro just because it keeps all the images and intermediate data in memory.
2 – Put in the fastest disk (or RAID array – four 500GB disks in a RAID array are cheaper and faster than a 2TB disk, and the default controller in my Mac Pro could do RAID with no new hardware) you can afford after you’re done buying RAM. When we do have to read or save a file, or spool something to disk, that fast disk will mean less time spent looking at progress bars.

[Question via Colin Smith]
* In other words, the speed of printing depends on how quickly data can be moved to/from your hard drive.

7:34 AM | Permalink | Comments [7]
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