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Large File Benchmark

April 6, 2011

Artwork has recently been tasked with supporting equipment that is required to process very large Gerber (RS274X) files -- on the order of 300 MB up to 2GB -- and to produce extremely high resolution raster images (from 50,000 DPI to 190,000 dpi) This is generally much larger input files and much higher resolution than is typically needed for a PCB imaging or inspection machine.

In order to determine if our current RIP was up to the job (or whether we needed to come up with new algorithms and approaches) we generated some very large Gerber files and proceeded to run the RIP at different DPIs.

The Setup

We used the following equipment and procedures to run this benchmark:


Computer

Intel Quad 8400 2.66 GHz

8 GB RAM

WD SATA HD (10K RPM)

Windows 7 64 bit Ultimate

Gerber File

125 x 125 mm (5x5 inches)

325 MB, 730 MB, 2300 MB

Software

gbr_rip Version 6.60

Ram buffer = 256 MB


Command Line

All tests were run using the command line and the times were extracted from the log files:

C:\WCAD\GBRIP\gbr2tiff.exe 325mb.gbr -274x -mm -pack:325mb_150k.tif -dpi:150000 -aw -ram:256
C:\WCAD\GBRIP\gbr2tiff.exe 325mb.gbr -274x -mm -pack:325mb_100k.tif -dpi:100000 -aw -ram:256
C:\WCAD\GBRIP\gbr2tiff.exe 325mb.gbr -274x -mm -pack:325mb_75k.tif  -dpi:75000  -aw -ram:256
C:\WCAD\GBRIP\gbr2tiff.exe 325mb.gbr -274x -mm -pack:325mb_190k.tif -dpi:190000 -aw -ram:256
C:\WCAD\GBRIP\gbr2tiff.exe 730mb.gbr -274x -mm -pack:730mb_50k.tif  -dpi:50000  -aw -ram:256
C:\WCAD\GBRIP\gbr2tiff.exe 730mb.gbr -274x -mm -pack:730mb_150k.tif -dpi:150000 -aw -ram:256
C:\WCAD\GBRIP\gbr2tiff.exe 730mb.gbr -274x -mm -pack:730mb_75k.tif  -dpi:75000  -aw -ram:256
C:\WCAD\GBRIP\gbr2tiff.exe 730mb.gbr -274x -mm -pack:730mb_100k.tif -dpi:100000 -aw -ram:256
C:\WCAD\GBRIP\gbr2tiff.exe 730mb.gbr -274x -mm -pack:730mb_190k.tif -dpi:190000 -aw -ram:256 

The output file is a monochrome TIFF image compressed using packbits



Timing and File Size


File Size
(MB)
DPI RIP Times
(min)
BitMap Size
(MB)
325 50,000 2.5 162
325 75,000 4 333
325 100,000 5.5 562
325 150,000 8.6 1,200
325 190,000 14.5 1,890


File Size
(MB)
DPI RIP Times
(min)
BitMap Size
(MB)
730 50,000 6 221
730 75,000 7.5 405
730 100,000 8.6 637
730 150,000 16 1,285
730 190,000 21 2,050


Input file of 2300 MB cannot be run on a 32 bit version of GBR_RIP due to memory constraints.

File Size
(MB)
DPI RIP Times
(min)
BitMap Size
(MB)
2300 50,000    
2300 75,000    
2300 100,000    
2300 150,000    
2300 190,000    


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ARTWORK CONVERSION SOFTWARE, INC.                  Company Profile
417 Ingalls St.,     Santa Cruz, CA 95060         Tel (831) 426-6163     Fax 426-2824               email: info@artwork.com