![]() I can still hear the fan speeding up while compiling.ġ) For amd64 arch the register sets are doubled, plus they are twice as wide, plus there are some auxilliary registers not seen on i586. May 9 08:16:15 sixis kernel: RTAI: Intel chipset found, enabling SMI workaround. Still, I wonder how this compares againstĪn order of magetude impovement is seen with isocpus I'll give the latency test another go with isocpus, review the kernel logfiles and call it done. The elapsed time from first attempt to running rtai kernel was ~10 hrs = a pita. On Debian unstable, so thats a baseline I guess. Model name : Intel(R) Pentium(R) D CPU 2.80GHzĠ0:00.0 Host bridge: Intel Corporation 82945G/GZ/P/PL Memory Controller Hub (rev 02)Ġ0:01.0 PCI bridge: Intel Corporation 82945G/GZ/P/PL PCI Express Root Port (rev 02)Ġ0:02.0 VGA compatible controller: Intel Corporation 82945G/GZ Integrated Graphics Controller (rev 02)Ġ0:02.1 Display controller: Intel Corporation 82945G/GZ Integrated Graphics Controller (rev 02)Ġ0:1c.0 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port 1 (rev 01) Well alrighty then, magma cvs amd64 without isocpus Please Log in or Create an account to join the conversation. They seem to have started from the same point and diverged, but I don't know to what extent they are compatible and would be interested to hear if anyone has some relevant knowledge. I am quite familiar with the magma realtime build but not RTLinux. The next Linuxcnc LTS release will have to use the 3.xx kernel I expect (it is already in 11.10) and I am not sure when magma patches will be available for that. The latest x86 patch is 1 month old and covers 2.6.38, whereas as you say the x86_64 are 4 years old.Ĭertainly the 2.6.37.6-x86 patch works OK, I built a kernel using it recently. Regards rtai, there is certainly a contrast in the x86 and x86_64 in magma. ![]() There are few programs which actually exploit the extended registers fully and I don't use anything that requires 64bit. I didn't find them any faster, quite the contrary often and developmentĪlways lagged behind 32 bit, especially for things like flash-player. To a great extent I can understand that, I gave up using 64bit OS's on my hardware some years ago. Looking at some of the comments on the IRC, it looks like one of the main developers sees no reason to use 64bit systems for Linuxcnc.
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