If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
Virtual Drive
I need a RAM drive. (not a SSD)
i.e. a drive that uses a portion of the PC memory space. I need it for temporary fast calculations. My app uses a HDD but the letter is assignable. So it will go poof when I turn it off or shut down the PC. Anybody know a good one? --- news://freenews.netfront.net/ - complaints: --- |
Ads |
#2
|
|||
|
|||
Virtual Drive
OldGuy wrote:
I need a RAM drive. (not a SSD) i.e. a drive that uses a portion of the PC memory space. I need it for temporary fast calculations. My app uses a HDD but the letter is assignable. So it will go poof when I turn it off or shut down the PC. Anybody know a good one? Near the bottom of the page, is "RAMDisk Lite", using up to 4Gb of RAM. http://memory.dataram.com/products-a...ftware/ramdisk The paid version, allows up to the limits of PAE. On some older systems, this was 64GB. It's unclear if an AMD system, you could use more than 64GB, as AMD has more address bits supported under PAE. ******* Actually, the RAMDisk has two modes of operation. It can use a limited amount of memory, from the memory area below 4GB. The call used, uses "AWE". If instead, you enable the PAE option, it uses memory above 4GB. On my WinXP 32 bit machine, I have 8GB of RAM installed, and only the 4GB near the bottom is recognized by the OS. But the RAMDisk, running from "driver-land", is not restricted by the system memory license. And it can access all of the memory. With the free version of the RAMDisk, you can use memory above that which the OS sees. And that way, I can have a 4GB PAE RAMDisk, at the same time as keeping the other 4GB for the OS area. The two modes do not mix. You select one mode or the other. In my case, the PAE option makes the most available. As for speed, the speed is deceiving. If you use HDTune, it'll report around 4GB/sec. Yet, if you write thousands of 4KB files, you won't get near that benchmark rate. It seems the file system has limits as to how many transactions it will handle per second. The file system saturates, before the RAMDisk does. Paul |
#3
|
|||
|
|||
Virtual Drive
on 11/13/2013, Paul supposed :
OldGuy wrote: I need a RAM drive. (not a SSD) i.e. a drive that uses a portion of the PC memory space. I need it for temporary fast calculations. My app uses a HDD but the letter is assignable. So it will go poof when I turn it off or shut down the PC. Anybody know a good one? Near the bottom of the page, is "RAMDisk Lite", using up to 4Gb of RAM. http://memory.dataram.com/products-a...ftware/ramdisk The paid version, allows up to the limits of PAE. On some older systems, this was 64GB. It's unclear if an AMD system, you could use more than 64GB, as AMD has more address bits supported under PAE. ******* Actually, the RAMDisk has two modes of operation. It can use a limited amount of memory, from the memory area below 4GB. The call used, uses "AWE". If instead, you enable the PAE option, it uses memory above 4GB. On my WinXP 32 bit machine, I have 8GB of RAM installed, and only the 4GB near the bottom is recognized by the OS. But the RAMDisk, running from "driver-land", is not restricted by the system memory license. And it can access all of the memory. With the free version of the RAMDisk, you can use memory above that which the OS sees. And that way, I can have a 4GB PAE RAMDisk, at the same time as keeping the other 4GB for the OS area. The two modes do not mix. You select one mode or the other. In my case, the PAE option makes the most available. As for speed, the speed is deceiving. If you use HDTune, it'll report around 4GB/sec. Yet, if you write thousands of 4KB files, you won't get near that benchmark rate. It seems the file system has limits as to how many transactions it will handle per second. The file system saturates, before the RAMDisk does. Paul Thanks! I will give it a try. My immediate need is for a very small amount of RAM Disk. 4G will satisfy all for now. If this plays out, I will buy the paid personal version although I probably will never need all that as a RAM drive. --- news://freenews.netfront.net/ - complaints: --- |
#4
|
|||
|
|||
Virtual Drive
Paul has brought this to us :
OldGuy wrote: I need a RAM drive. (not a SSD) i.e. a drive that uses a portion of the PC memory space. I need it for temporary fast calculations. My app uses a HDD but the letter is assignable. So it will go poof when I turn it off or shut down the PC. Anybody know a good one? Near the bottom of the page, is "RAMDisk Lite", using up to 4Gb of RAM. http://memory.dataram.com/products-a...ftware/ramdisk The paid version, allows up to the limits of PAE. On some older systems, this was 64GB. It's unclear if an AMD system, you could use more than 64GB, as AMD has more address bits supported under PAE. ******* Actually, the RAMDisk has two modes of operation. It can use a limited amount of memory, from the memory area below 4GB. The call used, uses "AWE". If instead, you enable the PAE option, it uses memory above 4GB. On my WinXP 32 bit machine, I have 8GB of RAM installed, and only the 4GB near the bottom is recognized by the OS. But the RAMDisk, running from "driver-land", is not restricted by the system memory license. And it can access all of the memory. With the free version of the RAMDisk, you can use memory above that which the OS sees. And that way, I can have a 4GB PAE RAMDisk, at the same time as keeping the other 4GB for the OS area. The two modes do not mix. You select one mode or the other. In my case, the PAE option makes the most available. As for speed, the speed is deceiving. If you use HDTune, it'll report around 4GB/sec. Yet, if you write thousands of 4KB files, you won't get near that benchmark rate. It seems the file system has limits as to how many transactions it will handle per second. The file system saturates, before the RAMDisk does. Paul Unfortunately it makes things a little difficult since the RAM Drive created by that software does not report back to windows as a RAM Drive but instead as a Fixed drive. I can use but it makes life a little more difficult. --- news://freenews.netfront.net/ - complaints: --- |
#5
|
|||
|
|||
Virtual Drive
OldGuy wrote:
Paul has brought this to us : OldGuy wrote: I need a RAM drive. (not a SSD) i.e. a drive that uses a portion of the PC memory space. I need it for temporary fast calculations. My app uses a HDD but the letter is assignable. So it will go poof when I turn it off or shut down the PC. Anybody know a good one? Near the bottom of the page, is "RAMDisk Lite", using up to 4Gb of RAM. http://memory.dataram.com/products-a...ftware/ramdisk The paid version, allows up to the limits of PAE. On some older systems, this was 64GB. It's unclear if an AMD system, you could use more than 64GB, as AMD has more address bits supported under PAE. ******* Actually, the RAMDisk has two modes of operation. It can use a limited amount of memory, from the memory area below 4GB. The call used, uses "AWE". If instead, you enable the PAE option, it uses memory above 4GB. On my WinXP 32 bit machine, I have 8GB of RAM installed, and only the 4GB near the bottom is recognized by the OS. But the RAMDisk, running from "driver-land", is not restricted by the system memory license. And it can access all of the memory. With the free version of the RAMDisk, you can use memory above that which the OS sees. And that way, I can have a 4GB PAE RAMDisk, at the same time as keeping the other 4GB for the OS area. The two modes do not mix. You select one mode or the other. In my case, the PAE option makes the most available. As for speed, the speed is deceiving. If you use HDTune, it'll report around 4GB/sec. Yet, if you write thousands of 4KB files, you won't get near that benchmark rate. It seems the file system has limits as to how many transactions it will handle per second. The file system saturates, before the RAMDisk does. Paul Unfortunately it makes things a little difficult since the RAM Drive created by that software does not report back to windows as a RAM Drive but instead as a Fixed drive. I can use but it makes life a little more difficult. If you go looking for software based on the old Microsoft sample code, then the downside of that is usually the disk so created, is a lot smaller. Before the one you tested came along, I was using AR RAM Disk V1.20 occasionally. But the web site no longer acknowledges this page. And archive.org doesn't have a copy of the download. I was using this on Win2K. It would probably work on WinXP, but I don't know about later OSes. That could be why they removed it. http://arsoft-online.de/index.php?op...il einfo&id=3 ramdisk.zip 95,057 bytes md5sum = f9fd7d086ce3588bc066cf733d8ff3b2 That one is a bit twitchy to get working. HTH, Paul |
#6
|
|||
|
|||
Virtual Drive
OldGuy wrote:
Paul has brought this to us : OldGuy wrote: I need a RAM drive. (not a SSD) i.e. a drive that uses a portion of the PC memory space. I need it for temporary fast calculations. My app uses a HDD but the letter is assignable. So it will go poof when I turn it off or shut down the PC. Anybody know a good one? Near the bottom of the page, is "RAMDisk Lite", using up to 4Gb of RAM. http://memory.dataram.com/products-a...ftware/ramdisk The paid version, allows up to the limits of PAE. On some older systems, this was 64GB. It's unclear if an AMD system, you could use more than 64GB, as AMD has more address bits supported under PAE. ******* Actually, the RAMDisk has two modes of operation. It can use a limited amount of memory, from the memory area below 4GB. The call used, uses "AWE". If instead, you enable the PAE option, it uses memory above 4GB. On my WinXP 32 bit machine, I have 8GB of RAM installed, and only the 4GB near the bottom is recognized by the OS. But the RAMDisk, running from "driver-land", is not restricted by the system memory license. And it can access all of the memory. With the free version of the RAMDisk, you can use memory above that which the OS sees. And that way, I can have a 4GB PAE RAMDisk, at the same time as keeping the other 4GB for the OS area. The two modes do not mix. You select one mode or the other. In my case, the PAE option makes the most available. As for speed, the speed is deceiving. If you use HDTune, it'll report around 4GB/sec. Yet, if you write thousands of 4KB files, you won't get near that benchmark rate. It seems the file system has limits as to how many transactions it will handle per second. The file system saturates, before the RAMDisk does. Paul Unfortunately it makes things a little difficult since the RAM Drive created by that software does not report back to windows as a RAM Drive but instead as a Fixed drive. I can use but it makes life a little more difficult. If you go looking for software based on the old Microsoft sample code, then the downside of that is usually the disk so created, is a lot smaller. Before the one you tested came along, I was using AR RAM Disk V1.20 occasionally. But the web site no longer acknowledges this page. And archive.org doesn't have a copy of the download. I was using this on Win2K. It would probably work on WinXP, but I don't know about later OSes. That could be why they removed it. http://arsoft-online.de/index.php?op...il einfo&id=3 ramdisk.zip 95,057 bytes md5sum = f9fd7d086ce3588bc066cf733d8ff3b2 That one is a bit twitchy to get working. HTH, Paul To clarify, I wrote a small piece of code that uses a windows API to get the drive type. This API reports correctly on all types of drives except in the case of the aformentioned RAMDisk it reports it as fixed. I have successfully used this RAMDisk and it works well. I really do not need, right now anyay, much more than 500MB of RAMDisk. Thank you for your help! --- news://freenews.netfront.net/ - complaints: --- |
#7
|
|||
|
|||
Virtual Drive
In message , OldGuy
writes: Paul has brought this to us : [] Near the bottom of the page, is "RAMDisk Lite", using up to 4Gb of RAM. http://memory.dataram.com/products-a...ftware/ramdisk [] Unfortunately it makes things a little difficult since the RAM Drive created by that software does not report back to windows as a RAM Drive but instead as a Fixed drive. I can use but it makes life a little more difficult. [] Just being nosey, but why is that a problem - what difference (other than that it goes when you switch off, obviously) is there between (how Windows uses) a RAM drive and a "Fixed" drive? -- J. P. Gilliver. UMRA: 1960/1985 MB++G()AL-IS-Ch++(p)Ar@T+H+Sh0!:`)DNAf The sun, with all those planets revolving around it and dependent upon it, can still ripen a bunch of grapes as it if had nothing else in the universe to do. -Galileo Galilei, physicist and astronomer (1564-1642) |
Thread Tools | |
Display Modes | |
|
|