Message boards :
Number crunching :
memory as a ram disk
Message board moderation
Author | Message |
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Paul D Harris Send message Joined: 1 Dec 99 Posts: 1122 Credit: 33,600,005 RAC: 0 |
I was wondering if I could change my memory to start using some of it as a ram disk. So I was wondering what memory I should go to and if it was worth the effort. I have in my system motherboard=asus 6pt x58 ich 10r cpu=i7 920 bloomfield 1366lga memory= ddr3 1024 m bytes pc3-10700h (667 mhz) g.skill f3-10666cl7-1gbpk xmp-1334=667mhz7-7-7-19-31-2t-1.600v jedec #3=666mhz 9-9-9-24-33-1.50v jedec #2=592mhz 8-8-8-22-30-1.50v jedec #1=444mhz-6..6.6.16.22-1.50v |
Wiggo Send message Joined: 24 Jan 00 Posts: 34744 Credit: 261,360,520 RAC: 489 |
This question has been asked twice recently and the answer is that it will not help crunching. Cheers. |
Andy Lee Robinson Send message Joined: 8 Dec 05 Posts: 630 Credit: 59,973,836 RAC: 0 |
Not quite true... might gain an extra couple of seconds per day! |
Khangollo Send message Joined: 1 Aug 00 Posts: 245 Credit: 36,410,524 RAC: 0 |
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HAL9000 Send message Joined: 11 Sep 99 Posts: 6534 Credit: 196,805,888 RAC: 57 |
I was wondering if I could change my memory to start using some of it as a ram disk. So I was wondering what memory I should go to and if it was worth the effort. Being worth the effort depends on what you want to accomplish. If you are thinking it will be a big gain in processing tasks then no it would not be worth the effort. As the gains for processing tasks would be <= 1%. If you are try to save power by having your hard disk spin down or something of that nature then yes it probably is worth the effort. I do that on a few systems for that reason. However using a flash drive of some kind could give you about the same gain. In one of my notebooks I run BOINC from a SDHC drive. This allowed the hard drive to stay spun down in it's lower power state making less heat & using less power. SETI@home classic workunits: 93,865 CPU time: 863,447 hours Join the [url=http://tinyurl.com/8y46zvu]BP6/VP6 User Group[ |
Dave Send message Joined: 29 Mar 02 Posts: 778 Credit: 25,001,396 RAC: 0 |
Please see other threads on this subject. Edit: HAL: @ the expense of SDHC write-cycle life ;). |
HAL9000 Send message Joined: 11 Sep 99 Posts: 6534 Credit: 196,805,888 RAC: 57 |
Please see other threads on this subject. I have never own out a flash device other than some old EEPROMs. So I kind of want to try and kill the SDHC. So I can see if it starts marking sections as unusable or if the whole thing becomes trash all at once. If it just start marking sections as unusable then I should be good since it is 16GB & BOINC is the only things on it. SETI@home classic workunits: 93,865 CPU time: 863,447 hours Join the [url=http://tinyurl.com/8y46zvu]BP6/VP6 User Group[ |
Paul D Harris Send message Joined: 1 Dec 99 Posts: 1122 Credit: 33,600,005 RAC: 0 |
I was just considering of updating my memory to say 6 sticks of 4gb at 16000 at low cl I could find and using some of the memory as a flash drive. It sounds like the gain in crunching would be minimal as compared to the money I would be spending to by the memory for under 200 us dollars. |
Cosmic_Ocean Send message Joined: 23 Dec 00 Posts: 3027 Credit: 13,516,867 RAC: 13 |
Yeah, it's really just not worth it. Best thing you can use a ramdrive for is some service/daemon that makes a bunch of writes to/from log/config files. It won't make the service/daemon any faster, but it will save the HDD. As stated in one of the other ramdisk threads recently, I did that on my linux laptop since the HDD in it was a really old IBM TravelStar. Given the track record for those going into click-of-death (more prevalent in the DeskStar line), I did a 'mnt -t ramfs /dev/ram0 /ram' and moved all the log files to there for each service. The HDD didn't spin up for 3 months at one point. Then the power flickered, the UPS went into "I don't know what to do" mode and cut power to all the output plugs, and after I found it, I turned the laptop back on and it was fine for 33 days, then click-of-deathed. Linux laptop: record uptime: 1511d 20h 19m (ended due to the power brick giving-up) |
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