julienrobert

I want to load multiple video in RAM to access them quickly. My computer has 8 gig of RAM. It seems Max is limited to 4 gigs? (actually, in activity monitor, it stucks at 3,00 gig).

Is there a workaround for that? It is a shame that I cannot use all my RAM for my project...

workaround-for-ram-limit

As often mentioned here, this is due to the fact that you are working in a 32-bit realm. With 32-bit memory addressing, the virtual address space is limited to the size of a 32-bit value.

what should work: make a ramdisk (on mac the maximum is 1,2 GB/disk but you should be able to combine serveral ramdisks to a stripe if needed, propably you can even write an automator script for that) and save your quicktimevideos to that. this way you don't need to preload them in max as they are already in ram and therefore you get the same speed without reaching the ram-limit.

the only thing you need to be aware of: as soon as you eject the disk or reboot, contents will be lost so be careful...

for making a ramdisk (1.2 gb) on macos x type in the terminal:

what should work: make a ramdisk (on mac the maximum is 1,2 GB/disk but you should be able to combine serveral ramdisks to a stripe if needed, propably you can even write an automator script for that) and save your quicktimevideos to that. this way you don't need to preload them in max as they are already in ram and therefore you get the same speed without reaching the ram-limit.
the only thing you need to be aware of: as soon as you eject the disk or reboot, contents will be lost so be careful...

for making a ramdisk (1.2 gb) on macos x type in the terminal:
diskutil erasevolume HFS+ "r1" hdiutil attach -nomount ram://2330860


the ram disk is the only/good solution I guess.

so is it possible to create ramdisks on the fly using the [shell] object ?

so is it possible to create ramdisks on the fly using the [shell] object ?
did anybody try this ?


workaround for RAM limit?