Re: To 64 or Not to 64?

2011-02-28 Thread Miles Bader
Ron Johnson  writes:
> On 02/28/2011 01:36 AM, Miles Bader wrote:
>> Ron Johnson  writes:
 I do program development, compiles, etc. and have to say that for me
 64-bit is definitely faster, to wit:
>>>
>>> Have you tried Tiny CC?  When it's sufficient for the task, it's compile
>>> times are pretty fast.
>>>
>>> http://global.phoronix-test-suite.com/?k=profile&u=staalmannen-18107-15267-29041
>>
>> Note that the guy who did that didn't use _any_ optimization flags --
>> not even -O -- so the result doesn't have much connection with reality
>> (without -O, many compilers won't even _try_ to produce good code).
>>
>> Unfortunately that sort of idiocy seems all too typical for benchmarking
>> at Phoronix...
>
> A fast compiler is *always* useful during development.

A fast compiler is sometimes useful, but the problem is that in this
case the guy misinterpreted the results, and came to the conclusion that
tcc was also a _better_ compiler -- which it most certainly isn't -- and
then started telling everybody that...

-Miles

-- 
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pinning you underneath.  At night the ice weasels come.  --Nietzsche


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Re: To 64 or Not to 64?

2011-02-28 Thread Dotan Cohen
On Thu, Feb 24, 2011 at 00:21, Ron Johnson  wrote:
> What do you do with your PC?
>
> If you're "just a desktop user", then I recommend sticking with 32-bits (and
> a PAE kernel if you have gt 4GB RAM).
>

I agree. One of the biggest problems with 64 bit desktop systems is
Flash: the Adobe implementation is still in alpha (and feels like it),
and the Gnash implementation is even further behind.

Let's clarify the Adobe Flash situation: on _some_ hardware, users
have no problems with 64 bit Flash. On others, it is a mess. I suppose
that Adobe is slowly adding hardware support and that is why it is
still an alpha. Try it and see how _your_ hardware performs.


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Re: To 64 or Not to 64?

2011-02-28 Thread Ron Johnson

On 02/28/2011 01:36 AM, Miles Bader wrote:

Ron Johnson  writes:

I do program development, compiles, etc. and have to say that for me
64-bit is definitely faster, to wit:


Have you tried Tiny CC?  When it's sufficient for the task, it's compile
times are pretty fast.

http://global.phoronix-test-suite.com/?k=profile&u=staalmannen-18107-15267-29041


Note that the guy who did that didn't use _any_ optimization flags --
not even -O -- so the result doesn't have much connection with reality
(without -O, many compilers won't even _try_ to produce good code).

Unfortunately that sort of idiocy seems all too typical for benchmarking
at Phoronix...



A fast compiler is *always* useful during development.

--
I prefer banana-flavored energy bars made from tofu.


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Re: To 64 or Not to 64?

2011-02-28 Thread Miles Bader
Ron Johnson  writes:
>> I do program development, compiles, etc. and have to say that for me
>> 64-bit is definitely faster, to wit:
>
> Have you tried Tiny CC?  When it's sufficient for the task, it's compile
> times are pretty fast.
>
> http://global.phoronix-test-suite.com/?k=profile&u=staalmannen-18107-15267-29041

Note that the guy who did that didn't use _any_ optimization flags --
not even -O -- so the result doesn't have much connection with reality
(without -O, many compilers won't even _try_ to produce good code).

Unfortunately that sort of idiocy seems all too typical for benchmarking
at Phoronix...

-Miles

-- 
Fast, small, soon; pick any 2.


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Re: To 64 or Not to 64?

2011-02-25 Thread Hugo Vanwoerkom

Ron Johnson wrote:

On 02/24/2011 02:01 PM, Hugo Vanwoerkom wrote:
[snip]


I do program development, compiles, etc. and have to say that for me
64-bit is definitely faster, to wit:


Have you tried Tiny CC?  When it's sufficient for the task, it's compile 
times are pretty fast.


http://global.phoronix-test-suite.com/?k=profile&u=staalmannen-18107-15267-29041 



Have not tried Tiny CC. Almost all my stuff involves Qt, needs g++

Hugo


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Re: To 64 or Not to 64?

2011-02-24 Thread Ron Johnson

On 02/24/2011 02:01 PM, Hugo Vanwoerkom wrote:
[snip]


I do program development, compiles, etc. and have to say that for me
64-bit is definitely faster, to wit:


Have you tried Tiny CC?  When it's sufficient for the task, it's 
compile times are pretty fast.


http://global.phoronix-test-suite.com/?k=profile&u=staalmannen-18107-15267-29041
--
"The normal condition of mankind is tyranny and misery."
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Re: To 64 or Not to 64?

2011-02-24 Thread Ron Johnson

On 02/24/2011 01:00 PM, Andrei Popescu wrote:

On Mi, 23 feb 11, 17:19:34, Ron Johnson wrote:

On 02/23/2011 05:07 PM, Andrei Popescu wrote:

On Mi, 23 feb 11, 16:21:27, Ron Johnson wrote:


There is a 64-bit kernel for the 32-bit distro.  It would make
installing the nvidia driver impossible thru the Debian package, but
it *is* doable via much manual intervention.


Care to elaborate on this? I have squeeze running fine with
linux-image-2.6.32-5-amd64 and nvidia-glx.



32-bit userland or 64-bit userland?


32-bit userland, installed in late freeze.



Very interesting.  It wasn't like that a couple of years ago.

--
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Re: To 64 or Not to 64?

2011-02-24 Thread Hugo Vanwoerkom

David Baron wrote:

I am currently running Sid, 32-bit with recent i686 32 bit kernels.
Here is my cpu: ~$ lscpu
Architecture:  i686
CPU op-mode(s):32-bit, 64-bit
CPU(s):2
Thread(s) per core:2
Core(s) per socket:1
CPU socket(s): 1
Vendor ID: GenuineIntel
CPU family:15
Model: 4
Stepping:  3
CPU MHz:   3000.282
L1d cache: 16K
L2 cache:  2048K

Should I go to a 64-bit kernel? Benefits vs. Risks?
Will 64bit enable kvm functionality on this box?

Will this work with existing packages which could then be changed to 64 bit 
piecemeal or if taking the plunge, must/should redo everything?





Here is mine (4GB memory):

Architecture:  x86_64
CPU op-mode(s):64-bit
CPU(s):2
Thread(s) per core:1
Core(s) per socket:2
CPU socket(s): 1
NUMA node(s):  1
Vendor ID: AuthenticAMD
CPU family:16
Model: 6
Stepping:  2
CPU MHz:   3000.399
Virtualization:AMD-V
L1d cache: 64K
L1i cache: 64K
L2 cache:  1024K

I do program development, compiles, etc. and have to say that for me 
64-bit is definitely faster, to wit:

http://debian-oaxaca.blogspot.com/
That graph takes 8.676 secs to execute on Sid amd64 and 16.444 secs on 
Sid 686-bigmem. Same program, same data.


Hugo


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Re: To 64 or Not to 64?

2011-02-24 Thread Andrei Popescu
On Mi, 23 feb 11, 17:19:34, Ron Johnson wrote:
> On 02/23/2011 05:07 PM, Andrei Popescu wrote:
> >On Mi, 23 feb 11, 16:21:27, Ron Johnson wrote:
> >>
> >>There is a 64-bit kernel for the 32-bit distro.  It would make
> >>installing the nvidia driver impossible thru the Debian package, but
> >>it *is* doable via much manual intervention.
> >
> >Care to elaborate on this? I have squeeze running fine with
> >linux-image-2.6.32-5-amd64 and nvidia-glx.
> >
> 
> 32-bit userland or 64-bit userland?

32-bit userland, installed in late freeze.

Regards,
Andrei
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Re: To 64 or Not to 64?

2011-02-23 Thread Ron Johnson

On 02/23/2011 05:07 PM, Andrei Popescu wrote:

On Mi, 23 feb 11, 16:21:27, Ron Johnson wrote:


There is a 64-bit kernel for the 32-bit distro.  It would make
installing the nvidia driver impossible thru the Debian package, but
it *is* doable via much manual intervention.


Care to elaborate on this? I have squeeze running fine with
linux-image-2.6.32-5-amd64 and nvidia-glx.



32-bit userland or 64-bit userland?

--
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Milton Friedman


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Re: To 64 or Not to 64?

2011-02-23 Thread Andrei Popescu
On Mi, 23 feb 11, 16:21:27, Ron Johnson wrote:
> 
> There is a 64-bit kernel for the 32-bit distro.  It would make
> installing the nvidia driver impossible thru the Debian package, but
> it *is* doable via much manual intervention.

Care to elaborate on this? I have squeeze running fine with 
linux-image-2.6.32-5-amd64 and nvidia-glx.

Regards,
Andrei
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Re: To 64 or Not to 64?

2011-02-23 Thread Ron Johnson

On 02/23/2011 02:27 PM, David Baron wrote:

I am currently running Sid, 32-bit with recent i686 32 bit kernels.
Here is my cpu: ~$ lscpu
Architecture:  i686
CPU op-mode(s):32-bit, 64-bit
CPU(s):2
Thread(s) per core:2
Core(s) per socket:1
CPU socket(s): 1
Vendor ID: GenuineIntel
CPU family:15
Model: 4
Stepping:  3
CPU MHz:   3000.282
L1d cache: 16K
L2 cache:  2048K

Should I go to a 64-bit kernel? Benefits vs. Risks?
Will 64bit enable kvm functionality on this box?



What do you do with your PC?

If you're "just a desktop user", then I recommend sticking with 
32-bits (and a PAE kernel if you have gt 4GB RAM).



Will this work with existing packages which could then be changed to 64 bit
piecemeal or if taking the plunge, must/should redo everything?



There is a 64-bit kernel for the 32-bit distro.  It would make 
installing the nvidia driver impossible thru the Debian package, but 
it *is* doable via much manual intervention.



--
"The normal condition of mankind is tyranny and misery."
Milton Friedman


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Re: To 64 or Not to 64?

2011-02-23 Thread Aaron Toponce
On Wed, Feb 23, 2011 at 10:27:31PM +0200, David Baron wrote:
> Should I go to a 64-bit kernel? Benefits vs. Risks?
> Will 64bit enable kvm functionality on this box?

I've made these arguements on this list here before:

http://lists.debian.org/debian-user/2010/05/msg01055.html

In terms of enabling hardware virtualization, check the flags in
/proc/cpuinfo.

% egrep '(vmx|svm)' /proc/cpuinfo

> Will this work with existing packages which could then be changed to 64 bit 
> piecemeal or if taking the plunge, must/should redo everything?

If you make the move to 64-bit, then you will need to reinstall your
operating system, and pull the packages from the amd64 repository.

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o o o   . o .   . o o   o o .   o o o


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Re: To 64 or Not to 64?

2011-02-23 Thread Andrei Popescu
On Mi, 23 feb 11, 22:27:31, David Baron wrote:
> I am currently running Sid, 32-bit with recent i686 32 bit kernels.

Did you try the -amd64 flavour? How much RAM do you have?

Regards,
Andrei
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