[oe] psyco-dist not supported on 64 bit Linux

[Khem Raj]

On Wed, Oct 12, 2011 at 5:31 PM, Ulf Samuelsson
<ulf_samuelsson at telia.com> wrote:
> On 2011-10-12 21:03, Khem Raj wrote:
>>
>> On 10/12/2011 12:18 AM, Ulf Samuelsson wrote:
>>>
>>> On 2011-10-11 01:30, Ulf Samuelsson wrote:
>>>>
>>>> On 2011-10-10 23:35, Denys Dmytriyenko wrote:
>>>>>
>>>>> On Mon, Oct 10, 2011 at 11:24:18PM +0200, Ulf Samuelsson wrote:
>>>>>>
>>>>>> psyco-dist will not run on a 64 bit linux.
>>>>>> The guys behind psyco-dist recommends the use of PyPy
>>>>>>
>>>>>> What is the recommendation for 64 bit linux?
>>>>>>
>>>>>> Just run without JIT?
>>>>>> Don't run on a 64 bit linux?
>>>>>> Anything else?
>>>>>
>>>>> Yes, not supporting 64-bit hosts is one of the known limitations of
>>>>> psyco.
>>>>> Being stuck with Python 2.6 is another limitation.
>>>>>
>>>>> But, latest bitbake appears to be quite fast even w/o using psyco
>>>>> these days.
>>>>> Especially with parallel parsing on multiple cores...
>>>>>
>>>>
>>>> OK, I will try without JIT then.
>>>>
>>> Now I have some results.
>>>
>>> Building a custom x11 image on a 32 bit Ubuntu 10.10/psyco-dist took 91
>>> minutes.
>>> Building the same image on a 64 bit Ubuntu 11.04 without psyco-dist took
>>> 109 minutes
>>> (The last machine was an i7-920 w 4 GB RAM)
>>> The first might be the same, alternatively it was a machine with 6 GB
>>> RAM.
>>>
>>> = It takes 20% more time on a 64 bit O/S.
>>>
>>
>> are these on same hardware running once 32bit or and second time 64bit OS
>> ?
>>>
>>
>>
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>
> I have two core i7 machines
> #1 Dell Studio XPS with a 2.67 GHz  920 + 4GB of RAM (2 channel)./Ubuntu
> 11.04/x64
>      The 109 minutes was measured on machine #1
>
> #2 Homebuilt with a 2.67 GHz  920 + 6 GB of RAM (tri-channel)/Ubuntu 10.04
> x86
>     Gigabyte UD5 Motherboard
>     The   91 minutes was measured on machine #2.
>
> Both are using the same type of disk Western Digital Black 1 TB
> and have 1333 MHz memories.
>
>
> I tried Ubuntu 11.04 / x86 on machine #1 using an external e-SATA Seagate
> disk
> some time ago. I do not have the exact figures, but It was within minutes
> of machine #2, so I think it is safe to assume that the extra time
> is there due to the lack of JIT compiling.
>
> End of this week, I hope to try on a 4.4 GHz (overclocked) Core-i7
> 2600k/Ubuntu 11.10/x64.
> Still only 1333 MHz memory unfortunately.
>
>

numbers on same hardware with different OS would be more relevant
for comparision

> --
> Best Regards
> Ulf Samuelsson
>
>
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