RAM disc gets 16 layers of dv playback

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14-07-2007, 11:57 AM
samsc

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RAM disc gets 16 layers of dv playback

Using Esperance DV ram disc utility - i can get 14 layers of dv movies to playback at 25fps on my Intel 3.0Ghz 8Core mac...

http://www.mparrot.net/index.php?page=freewares&lang=en

using a seagate 15k5 scsi disc gives about 7 layers with same footage.

You can put stuff on a RAM disc and on SCSI at the same time and get improvements...
14-07-2007, 02:36 PM
emilianomorgia

Quote:

Originally Posted by samsc

Using Esperance DV ram disc utility - i can get 14 layers of dv movies to playback at 25fps on my Intel 3.0Ghz 8Core mac...

http://www.mparrot.net/index.php?page=freewares&lang=en

using a seagate 15k5 scsi disc gives about 7 layers with same footage.

Publish your super secret system profile for us !!!
14-07-2007, 06:05 PM
samsc

Quote:

Originally Posted by emilianomorgia

Publish your super secret system profile for us !!!

secret?

there isnt a secret?

what you want to know?
14-07-2007, 06:07 PM
emilianomorgia

Quote:

Originally Posted by samsc

secret?

there isnt a secret?

what you want to know?

Just Kidding .. Just curious to see your setup .

how many ram did you get to use it as disk ?
14-07-2007, 06:15 PM
samsc

Quote:

Originally Posted by emilianomorgia

Just Kidding .. Just curious to see your setup .

how many ram did you get to use it as disk ?

really. i thought maybe you really thought there was a secret.
Im not very good at secrets. maybe we could form a secret society together...

i used a 2GB ram disk.
14-07-2007, 06:18 PM
emilianomorgia

Quote:

Originally Posted by samsc

really. i thought maybe you really thought there was a secret.
Im not very good at secrets. maybe we could form a secret society together...

i used a 2GB ram disk.

ok we do a secret society from now on , but don't tell any one ok ?
14-07-2007, 06:19 PM
samsc

Quote:

Originally Posted by emilianomorgia

ok we do a secret society from now on , but don't tell any one ok ?

i can be the naive englishman and you can be machiavelli?
14-07-2007, 06:39 PM
emilianomorgia

Quote:

Originally Posted by samsc

i can be the naive englishman and you can be machiavelli?

Never tell anyone the real reason you did something unless it is useful to do so !
14-07-2007, 06:44 PM
samsc

Quote:

Originally Posted by emilianomorgia

Never tell anyone the real reason you did something unless it is useful to do so !

i love machiavelli... i read and reread the prince all the time...
14-07-2007, 06:47 PM
samsc

1 Attachment(s)

Quad intel 2.66Ghz also does 14 layers with ram disc

I also get 14 layers with 1GB ram disc on Intel.

14 layers in 31ms for Quad 2.66Ghz.
14 layers in 25ms for 8 core 3.Ghz

kindof what you would expect from cpu speed increase.
14-07-2007, 06:56 PM
emilianomorgia

Quote:

Originally Posted by samsc

I also get 14 layers with 1GB ram disc on Intel.

14 layers in 31ms for Quad 2.66Ghz.
14 layers in 25ms for 8 core 3.Ghz

kindof what you would expect from cpu speed increase.

Can we think to create a " snap shoot " of contents in a disk ram and then recall it ?

Say for every song we need just 2 / 4 giga of contents ...

how it's possible to load and un load those 4 giga ?
14-07-2007, 06:59 PM
samsc

Quote:

Originally Posted by emilianomorgia

Can we think to create a " snap shoot " of contents in a disk ram and then recall it ?

Say for every song we need just 2 / 4 giga of contents ...

how it's possible to load and un load those 4 giga ?

you will have to check out what the ram disc can do.

I had someone who was checking out the flash RAM drives with SATA interfaces that started appearing- he ordered one - not sure it turned up yet.
14-07-2007, 07:02 PM
samsc

2 Attachment(s)

Actually - i can do 16 dv layers on the quad 2.66Ghz with RAMdisk.
And to prove its not just disks.

I composited all 16 layers with transparent black ( nVidia 7300 ) card- and it uses about 10% of graphics.

the fps number are not correct in the captures because capturing screen interferes with playback....
14-07-2007, 07:43 PM
emilianomorgia

Quote:

Originally Posted by samsc

you will have to check out what the ram disc can do.

I had someone who was checking out the flash RAM drives with SATA interfaces that started appearing- he ordered one - not sure it turned up yet.

RAM drives with SATA or Ram Disk the space it's not very much at this time , I'm sure in few years we will larf about this . But the issue now is space for one or the other .

Any one out there can tell us how many giga are used in one song or event ?

I know it change from one to infinite , but I'm just curious to see if this Ramz things can be used in a real show or not .

Richard , Cat.app in the ram disk can help some how or not ?
14-07-2007, 07:54 PM
emilianomorgia

Quote:

Originally Posted by samsc

you will have to check out what the ram disc can do.

I had someone who was checking out the flash RAM drives with SATA interfaces that started appearing- he ordered one - not sure it turned up yet.

I've search for it , but I did not found any , yet . That will be a kick ass ! Hope to ear good news soon !
15-07-2007, 08:30 AM
samsc

solid state discs from san disk

http://www.sandisk.com/OEM/ProductCa...te_Drives.aspx

the performance of these will be related to the drive latency- how long it takes to process a disc read -
16-07-2007, 08:32 AM
samsc

Quote:

Originally Posted by emilianomorgia

Can we think to create a " snap shoot " of contents in a disk ram and then recall it ?

Say for every song we need just 2 / 4 giga of contents ...

how it's possible to load and un load those 4 giga ?

write an applescript or shell script - to delete files, and copy another batch. control from dmx in cue list. could be done....
http://macscripter.net/

it takes about a minute or so to copy 4Gb - assuming bandwidth from disc of around 50MB/s