Re: CPU cores...
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On 1/16/07, Henio Paszczak <blurrpp@xxxxxxxxx> wrote:
> Yes .. I understand that kernel is controlling that everything, but for sure there is some linux system call which give possibility to load secund core another thread, to synchronize this processes and so one. Any way .. some body had to write the kernel and give it "power" to decide which core to use ( of course i can read kernel source and for sure i will, but now i don't have enough time :) )
SOlaris gives you (the system administrator/programmer/etc) the ability to bind (using pbind) a process (not sure about threads, but it might be possible too) to a specific CPU/core. I still haven't played enough on multiple core Linux servers to have a need for that facility/function :( as I've found that the kernel's scheduling is mostly adequate enough once I've threaded/forked of the correct number of threads/processes for the available CPUs/cores. ... so for
example i want to create binary file .. program which doing some computation on both cores, put it to diskette boot block and restart system. There is no linux and other os I can use only bios system calls etc. and there is for sure some method to take control over both cores. Lukas
Check on ACPI and I think MPI (I believe 1.4 is the later version) that tells you about these CPUs/cores etc. Then use the bus locking instructions for synchronization and protection of critical stages/areas in your code. Again these principles are described in most text books on process/thread synchronization, it's just the assembler codes that different from CPU to CPU ;^P -- Hendrik Visage - To unsubscribe from this list: send the line "unsubscribe linux-assembly" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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