for flashrom, you can mention that we regularly re-flashed a 1024 node cluster in 30 seconds -- yep, averages out to 30 milliseconds per node :-). I just talked to a Nameless Vendor two weeks ago who told me that reflash would probably take "5 minutes per node, and was interactive with DOS" -- this on BRAND NEW HARDWARE!
Do you want to spend 1024 * 5 or 5120 minutes or 85 hours or do you want to spend 30 seconds? the choice is yours.
ron