On Wed, Apr 14, 2010 at 9:21 PM, Ian Smith smi...@nimnet.asn.au wrote:
On Wed, 14 Apr 2010, Garrett Cooper wrote:
On Wed, Apr 14, 2010 at 7:49 PM, Garrett Cooper yanef...@gmail.com wrote:
On Wed, Apr 14, 2010 at 5:46 PM, Maho NAKATA cha...@mac.com wrote:
Hi Andry and Adam
My
On Wed, Apr 14, 2010 at 10:26 PM, Maho NAKATA cha...@mac.com wrote:
From: Pieter de Goeje pie...@degoeje.nl
Subject: Re: How to reproduce: Re: Only 70% of theoretical peak performance
on FreeBSD 8/amd64, Corei7 920
Date: Wed, 14 Apr 2010 16:05:18 +0200
I think the best test would be to run
May I make a suggestion?
Would you mind creating a shared google spreadsheet with your testing
results and a shared google document with the test setup?
I think having the data in an easily represented, easily shared medium
would be beneficial to everyone.
Adrian
On 15 April 2010 08:46, Maho
on 14/04/2010 20:47 Adam Vande More said the following:
I'm no expert Andriy, but it seems like if gotoblas
implemented some of the FreeBSD optimizations then we'd be in the same
ballpark.
This is a good point.
But on the other hand, it means that our scheduler doesn't do a perfect job
here.
On Thu, Apr 15, 2010 at 3:54 AM, Andriy Gapon a...@freebsd.org wrote:
This is a good point.
But on the other hand, it means that our scheduler doesn't do a perfect job
here. BTW, I use ULE.
My observation is that when a number of CPU-intensive long running
processes is
less than or equal
on 15/04/2010 16:23 Adam Vande More said the following:
Is is possible to add a tunable to the scheduler for it's aggressiveness
in switching cores?
No idea; not a scheduler person.
--
Andriy Gapon
___
freebsd-stable@freebsd.org mailing list
on 14/04/2010 02:21 Maho NAKATA said the following:
2. install ports/math/gotoblas (manual download required)
make install
Do you know how gotoblas on Linux was obtained?
Was it built from source?
Has it come pre-packaged?
If so, can you find out details of its build configuration?
Thanks!
On Wednesday 14 April 2010 15:19:13 Andriy Gapon wrote:
on 14/04/2010 02:21 Maho NAKATA said the following:
2. install ports/math/gotoblas (manual download required)
make install
Do you know how gotoblas on Linux was obtained?
Was it built from source?
Has it come pre-packaged?
If so,
on 14/04/2010 02:21 Maho NAKATA said the following:
4. run dgemm.
% ./dgemm
n: 3000
time : 134.648208 or 16.910525
Mflops : 31943.419695
n: 3100
time : 148.122279 or 18.615284
Mflops : 32017.357408
n: 3200
time : 162.45 or 20.430651
Mflops : 32087.318295
n: 3300
time :
On Wed, Apr 14, 2010 at 10:26 AM, Andriy Gapon a...@freebsd.org wrote:
on 14/04/2010 02:21 Maho NAKATA said the following:
4. run dgemm.
% ./dgemm
n: 3000
time : 134.648208 or 16.910525
Mflops : 31943.419695
n: 3100
time : 148.122279 or 18.615284
Mflops : 32017.357408
n: 3200
On Wed, Apr 14, 2010 at 11:34 AM, Adam Vande More amvandem...@gmail.comwrote:
That's about 67% utilization, turning off HTT drops it more. HTT on the
newer cores is good, not bad.
Well that was completely contrarty to some tests I'd run when I first got
the cpu.
With HTT off:
n: 3000
on 14/04/2010 19:45 Adam Vande More said the following:
also if I run cpuset on the dgemm then the utilization is basically at
the theoretical max for one core so at least that part is working.
You can also try procstat -t pid to find out thread IDs and cpuset -t to pin
the
threads to the
On Wed, Apr 14, 2010 at 11:51 AM, Andriy Gapon a...@freebsd.org wrote:
on 14/04/2010 19:45 Adam Vande More said the following:
also if I run cpuset on the dgemm then the utilization is basically at
the theoretical max for one core so at least that part is working.
You can also try
From: Andriy Gapon a...@freebsd.org
Subject: Re: How to reproduce: Re: Only 70% of theoretical peak performance on
FreeBSD 8/amd64, Corei7 920
Date: Wed, 14 Apr 2010 16:19:13 +0300
on 14/04/2010 02:21 Maho NAKATA said the following:
2. install ports/math/gotoblas (manual download required)
Hi Andry and Adam
My test again. No desktop, etc. I just run dgemm.
Contrary to Adam's result, Hyper Threading makes the performance worse.
all tests are done on Core i7 920 @ 2.67GHz. (TurboBoost @2.8GHz)
Turbo Boost off, Hyper threading off: 82% (35GFlops)[1]
Turbo Boost off, Hyper
opps I missed this e-mail...
From: Adam Vande More amvandem...@gmail.com
Subject: Re: How to reproduce: Re: Only 70% of theoretical peak performance on
FreeBSD 8/amd64, Corei7 920
Date: Wed, 14 Apr 2010 11:45:04 -0500
On Wed, Apr 14, 2010 at 11:34 AM, Adam Vande More
Hi Andriy and Adam,
I did also the same thing as suggested.
my conclusion: on Core i7 920, 2.66GHz, TurboBoost on, HyperThreading off,
My result of dgemm GotoBLAS performance was following.
*summary of result
36-39GFlops 81-87% of peak performance without pinning
35-40GFlops 78-89% of peak
Hi Adam,
From: Adam Vande More amvandem...@gmail.com
Subject: Re: How to reproduce: Re: Only 70% of theoretical peak performance on
FreeBSD 8/amd64, Corei7 920
Date: Wed, 14 Apr 2010 12:47:31 -0500
Since this is a full fledged desktop environment, 90% utilization seems
pretty good.
No, I
On Wed, Apr 14, 2010 at 5:46 PM, Maho NAKATA cha...@mac.com wrote:
Hi Andry and Adam
My test again. No desktop, etc. I just run dgemm.
Contrary to Adam's result, Hyper Threading makes the performance worse.
all tests are done on Core i7 920 @ 2.67GHz. (TurboBoost @2.8GHz)
Turbo Boost off,
On Wed, Apr 14, 2010 at 7:49 PM, Garrett Cooper yanef...@gmail.com wrote:
On Wed, Apr 14, 2010 at 5:46 PM, Maho NAKATA cha...@mac.com wrote:
Hi Andry and Adam
My test again. No desktop, etc. I just run dgemm.
Contrary to Adam's result, Hyper Threading makes the performance worse.
all tests
On Wed, 14 Apr 2010, Garrett Cooper wrote:
On Wed, Apr 14, 2010 at 7:49 PM, Garrett Cooper yanef...@gmail.com wrote:
On Wed, Apr 14, 2010 at 5:46 PM, Maho NAKATA cha...@mac.com wrote:
Hi Andry and Adam
My test again. No desktop, etc. I just run dgemm.
Contrary to Adam's result,
From: Pieter de Goeje pie...@degoeje.nl
Subject: Re: How to reproduce: Re: Only 70% of theoretical peak performance on
FreeBSD 8/amd64, Corei7 920
Date: Wed, 14 Apr 2010 16:05:18 +0200
I think the best test would be to run a statically compiled linux binary on
FreeBSD. That way the compiler
on 15/04/2010 04:20 Maho NAKATA said the following:
Hi Andriy and Adam,
I did also the same thing as suggested.
my conclusion: on Core i7 920, 2.66GHz, TurboBoost on, HyperThreading off,
So HyperThreading is off.
then, pinned to each core like following
% procstat -t 1408
PID
Hi all, thanks for showing interest in this issue.
I uploaded my test code so that you can test on your PC.
Following is the instruction.
1. download my source codes.
http://people.freebsd.org/~maho/dgemm/Makefile
http://people.freebsd.org/~maho/dgemm/dgemm.cpp
check md5.
% md5 Makefile
24 matches
Mail list logo
