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тАО10-12-2010 09:53 PM
тАО10-12-2010 09:53 PM
Please tell what is the exactly meaning of OS bit.
For eg. i have hpux 11iv2 64 bit OS.What is the difference betwenn 32 bit and 64 bit.
Regards
himacs
Solved! Go to Solution.
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тАО10-12-2010 10:03 PM
тАО10-12-2010 10:03 PM
Re: OS bit
that the os is running in native 64 bit.
mikap
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тАО10-12-2010 10:12 PM
тАО10-12-2010 10:12 PM
Re: OS bit
Thanks for the response.But please explain me that.
Actually my understanding is if OS is 64 bit, datas are transferred as 64 bit each.
Regards
himacs
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тАО10-12-2010 10:13 PM
тАО10-12-2010 10:13 PM
Re: OS bit
Please refer below threads
http://forums11.itrc.hp.com/service/forums/questionanswer.do?threadId=988632
http://forums11.itrc.hp.com/service/forums/questionanswer.do?threadId=939289
Hope this solves ur query.
Regards
Vishnu Khandare
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тАО10-12-2010 10:17 PM
тАО10-12-2010 10:17 PM
Re: OS bit
i would recommend to read this articles :
http://en.wikipedia.org/wiki/HP-UX
http://en.wikipedia.org/wiki/64-bit
mikap
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тАО10-13-2010 04:50 AM
тАО10-13-2010 04:50 AM
Re: OS bit
It is meaningless since all 11.23 & 11.31 kernels are 64 bit.
The important thing is whether your application is 32 or 64 bit. The latter can address more data.
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тАО10-13-2010 06:18 AM
тАО10-13-2010 06:18 AM
SolutionIf the system is a 64 bit one, in general (but not always), it is referring to the address register. And, in that scope, in general, it means that the data registers are at least the same size. Also, in general, it means that that bus sizes are the same as well, although they may/may not be.
In most cases where everything is matched, its going to be on high end processors where the data registers, address registers, the address bus, the data bus, etc. are going to be pretty much the same, in this case 64 bit. In some cases, a piece or two of the above may be larger, though I can't think of one off hand.
In cases where the address register is larger than the data bus, etc. the reason is often a case where a product is being introduced as a method to provide alternate cost (and therefore market) positions.
The cleanest way to consider a system 64 bit would be to think along the lines that you've got 64 bit addressable ram, 64 bit data representation internally in the cpu, and a nice complement of 64 bit hardware to address ram, etc. external to the chip. Having a single element of the above not being true, may not necessarily disqualify the chip or whole architecture from being a 64 bit architecture system.
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тАО10-14-2010 09:05 AM
тАО10-14-2010 09:05 AM
Re: OS bit
Here is how to query the bitness of your system. The following is the mode your HW supports:
# getconf HW_CPU_SUPP_BITS
64
This tells you what modes your HW supports:
( 1 means 64-bit only, 2 means 32-bit only, and 3 means both)
# getconf HW_32_64_CAPABLE
1
This is the mode your kernel supports:
# getconf KERNEL_BITS
64
For the further explanation see the comment of TwoProc above.
Regards,
Viktor
Unix operates with beer.
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тАО10-19-2010 01:11 PM
тАО10-19-2010 01:11 PM
Re: OS bit
Thanks for the responses.So in 64-bit OS more data can be saved in data register while comparing to 32-bit.And also process execution will be much faster.
Regards
himacs
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тАО10-19-2010 01:39 PM
тАО10-19-2010 01:39 PM
Re: OS bit
Not necessarily true. Most 64-bits processors are faster than the older 32-bit, but 64-bit does not always mean faster.
64-bit also allows you to address much more RAM than 32-bit.