Prospero 1 Posted November 12, 2002 Hi all (and hopefully Suma!, I've been trying to load some scripts onto a RAMdisk (s:) and run them from it. But how do I use the exec command with absolute pathnames? Nothing I've tried so far works. Can it be done, Suma? <Praying for an answer!> Prospero Share this post Link to post Share on other sites
suma 8 Posted November 12, 2002 There is normally no point in using ramdisk. Script files are very small and OS caching works quite well. Share this post Link to post Share on other sites
Prospero 1 Posted November 12, 2002 The reason I asked, Suma, is that I am trying to get OFP to read a small (changing) file at a high rate (in virtual realtime) - say, 50 Hz. An external program (called HeliSim) generates this rapidly changing (.sqs) file. The file might look like this: ---------- PSpndot = 10.3456 PSpedot = -3.3745 PSpddot = 0.8350 PSphi = 63.1298 PStheta = -2.9443 PSpsi = -0.2892 exit ---------- I.e. I am just loading 6 global variables - with the 3 velocity components and the 3 Euler angles. Hence I thought a RAMdisk might be solution. Is there another way I might accomplish this? Prospero Share this post Link to post Share on other sites
ID7 0 Posted November 12, 2002 Provided the file is written 50 times per second, Windows write cache (delayed write) will prevent flushing of the file to the disk. Write cache also functions as read cache for subsequent reads of the file. There should be no disk activity if you have enabled write caching (default on). The performance should be the same or better compared to ramdisk. Share this post Link to post Share on other sites
Prospero 1 Posted November 13, 2002 </span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (ID7 @ Nov. 12 2002,15:39)</td></tr><tr><td id="QUOTE">Provided the file is written 50 times per second, Windows write cache (delayed write) will prevent flushing of the file to the disk. Write cache also functions as read cache for subsequent reads of the file. Â There should be no disk activity if you have enabled write caching (default on). The performance should be the same or better compared to ramdisk.<span id='postcolor'> Cool. Many thanks chaps! Prospero Share this post Link to post Share on other sites