Godfrey DiGiorgi wrote: > On Nov 25, 2006, at 7:42 AM, Mark Cassino wrote: > >>> We'll be processing as many as 500 6-10mp files into 3000 or more >>> 8x10 >>> package prints. >>> Gigabytes at a time is a pretty close assessment. >>> Right now, it takes us about an hour of computer time to do it. >>> I'd like >>> to speed things up a bit. >> If you are doing similar work now you can run a batch with the task >> manager open to the performance tab, and see what the memory usage is. >> When Photoshop (I assume you are using Photoshop) has to start >> swapping >> to the drive, performance will tumble. >> >> As Godfrey noted, it sounds that the bottle neck would be in the I/ >> O. If >> you are loading and saving a bunch of relatively small files (6-10 mp >> seems small to me) then you might benefit most from investing in fast >> drives and enough memory to cache the image while it is worked on. > > My understanding is that Photoshop on Windows XP cannot take > advantage of more than 2G RAM at the present time. I am not sure > about it on Mac OS X. My strategy, though, assuming a similar memory > need, was to fit my G5 with 3G RAM as a minimum, then fit both a very > fast 500G main drive and a second fast 250G scratch drive to point > Photoshop's cache at. That seems to give it a good shot... > > I've clocked it, while watching the system monitor, while doing a > heavy batch RAW conversion processing and scripted operations job. It > never consumes all of the available RAM, even with me running several > other processes simultaneously (like web browser, terminal, email) > and paging is minimal. Other processes with lots of IO can impact the > photoshop batch performance as can rendering occasionally but that's > to be expected ... degradation unless I'm doing something truly silly > is minor percentage points. > > Godfrey >
OS X is the same 2GB limit for PS, but you do get an advantage up to about 3GB by allowing other processes to have RAM and have Photoshop eat up the full amount it can address. I'd say that 4GB would be about the maximum you'd want to install for a PS workstation (which would allow you to run something else that's moderately demanding on RAM as well as PS, like say Bridge doing RAW conversions as PS batch processes. -Adam -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
