Hi Rucha!
Great start. Whenever you have some code ready for the parser part, please
share the repository and the branch onto which you are pushing your code.
We should discuss implementation details once you have managed to get the
grammar to work. Remember to include test cases to show that
i didn't read the code yet, but some min/max problems can add restrictions
about variables, for example you could set that variables are =0
must check but well that's a nice step guy :) a nice work :)
2014-08-04 13:31 GMT-03:00 Anshu Avinash anshu.avinas...@gmail.com:
Hi all,
Here is a blog
Hi all,
Here is a blog post describing my progress so far:
http://igniting.in/gsoc2014/2014/08/04/progress-so-far/
Comments and suggestions are welcome.
Regards
Anshu Avinash
On Wed, Jul 9, 2014 at 1:14 AM, Roberto Spadim robe...@spadim.com.br
wrote:
please include the output
if you have time, you could take a look at linear programming
lpsolve is a well know library, i used it a lot some years ago, there's
others libs but this one is well known, http://lpsolve.sourceforge.net/5.5/
maybe it give better results, instead of trying to solve a equation you
execute a
Hi all,
This week's blog post is at:
http://igniting.in/gsoc2014/2014/07/08/solving-linear-equations/ . Sorry
for the delay.
Suggestions for an approach to solve the system of linear equations are
welcome.
Regards
Anshu Avinash
On Mon, Jun 23, 2014 at 7:39 PM, Roberto Spadim
could you 'display' the dataset you used with octave?
2014-07-08 13:55 GMT-03:00 Anshu Avinash anshu.avinas...@gmail.com:
Hi all,
This week's blog post is at:
http://igniting.in/gsoc2014/2014/07/08/solving-linear-equations/ . Sorry for
the delay.
Suggestions for an approach to solve the
Hi all,
You can download it here (
https://drive.google.com/file/d/0B7NiQb4EbbUVNVJFZ2xkRVR3Ylk/edit?usp=sharing).
It is around 26M. I have added the link on blog too.
Regards
Anshu
On Tue, Jul 8, 2014 at 10:38 PM, Roberto Spadim robe...@spadim.com.br
wrote:
could you 'display' the dataset
just to understand...
--- the solve_equation part, today only used to save information:
std::ofstream datafile;
char file_name[100];
my_snprintf(file_name, 100,
/tmp/mariadb_cost_coefficients_%lu.txt, thread_id);
datafile.open(file_name, std::ios::app);
for(int i=0; i MAX_CONSTANTS;
Hi,
The idea is we know the total time the query took, and how many times an
operation was performed. For example, consider the case of 'read_time'. We
know how many times an index read took place, but don't know how much time
does it take to do an index read. By solving these equations, we are
ops, linear equation
2014-07-08 15:47 GMT-03:00 Roberto Spadim robe...@spadim.com.br:
going back...
a1t1 + a2t2 + … + a130t130= ttotal
a1, t1...
a1 is something you don't know
t1 is the coefficients[i]?
it's a first order equation, right?
2014-07-08 15:20 GMT-03:00 Anshu Avinash
Hi,
a1, a2, ..., a130 are coefficients. t1, t2, .., t130 are unknowns. We need
130 linearly independent equations to solve for these variables. We can
never get 130 linearly independent equations as some of the coefficients
would be 0 every time. Hence, we get an approximate solution by forming
a1,a2 is what your solve equation function is saving?
and you want know t1,t2,t3..t130, to understand how much time each
'read function' take, that's it?
doing this, what's the next step? this is a start point to select
what's better? index vs table scan?
2014-07-08 15:54 GMT-03:00 Anshu
check lapack lib, i used it some years ago, and it solve linear
equations, at least you don't waste time with 'how to solve linear
equations', if you want to study :) lapack was a nice lib, at least i
used without problems
2014-07-08 16:04 GMT-03:00 Roberto Spadim robe...@spadim.com.br:
a1,a2 is
http://www.netlib.org/lapack/lapacke.html
a C api to lapack
2014-07-08 16:23 GMT-03:00 Roberto Spadim robe...@spadim.com.br:
check lapack lib, i used it some years ago, and it solve linear
equations, at least you don't waste time with 'how to solve linear
equations', if you want to study :)
please include the output (solutions.txt) link too, to check what happened
2014-07-08 16:24 GMT-03:00 Roberto Spadim robe...@spadim.com.br:
http://www.netlib.org/lapack/lapacke.html
a C api to lapack
2014-07-08 16:23 GMT-03:00 Roberto Spadim robe...@spadim.com.br:
check lapack lib, i used it
Hi all,
You can find this week's blog entry at:
http://igniting.in/2014/06/23/work-before-mid-term/
Suggestions/reviews are welcome.
Regards
Anshu Avinash
On Mon, Jun 9, 2014 at 7:30 PM, Roberto Spadim robe...@spadim.com.br
wrote:
Well i wws reading your posts
Do you need big data to test
Sorry this page does not exist =(
2014-06-23 8:07 GMT-03:00 Anshu Avinash anshu.avinas...@gmail.com:
Hi all,
You can find this week's blog entry at:
http://igniting.in/2014/06/23/work-before-mid-term/
Suggestions/reviews are welcome.
Regards
Anshu Avinash
On Mon, Jun 9, 2014 at 7:30
Hi,
Sorry for the confusion, this is the new link:
http://igniting.in/gsoc2014/2014/06/23/work-before-mid-term/
Thanks for pointing out.
Regards
Anshu
On Mon, Jun 23, 2014 at 7:32 PM, Roberto Spadim robe...@spadim.com.br
wrote:
Sorry this page does not exist =(
2014-06-23 8:07 GMT-03:00
MDEV.
it's nice to put full name (MDEV-350), since google and others search
engines help when someone try to find information about mdev 350
text is ok :)
2014-06-23 11:04 GMT-03:00 Anshu Avinash anshu.avinas...@gmail.com:
Hi,
Sorry for the confusion, this is the new link:
Well i wws reading your posts
Do you need big data to test read and scan times?
Em segunda-feira, 9 de junho de 2014, Anshu Avinash
anshu.avinas...@gmail.com escreveu:
Hi all,
You can find this week's blog entry at
http://igniting.in/gsoc2014/2014/06/09/more-coding/. I'm now maintaining
Hi all,
You can find my this week's blog entry at
http://igniting.in/gsoc2014/2014/05/25/coding-things-up/ . I have created a
branch on launchpad for my work:
http://bazaar.launchpad.net/~igniting/maria/maria/revision/4211 . You can
give your suggestions/reviews either on this thread or as a
Hi all,
This week's blog entry would get delayed by couple of days. I have started
coding though and would like to give heads up on what I'm doing.
I've looked at the diffs for Cost model project of mysql:
http://bazaar.launchpad.net/~mysql/mysql-server/5.7/revision/7596 and
wow a big work, congratulation guy, i will read part by part
to better understand mariadb code
2014-05-19 16:33 GMT-03:00 Anshu Avinash anshu.avinas...@gmail.com:
Hi all,
This week's blog entry would get delayed by couple of days. I have started
coding though and would like to give heads up
Hi all,
You can find my blog entry for this week at
http://igniting.in/gsoc2014/2014/05/11/first-steps/ .
Regards
Anshu Avinash
On Thu, May 8, 2014 at 11:46 PM, Anshu Avinash anshu.avinas...@gmail.comwrote:
Hi all,
Sorry for the irregular updates. I had been busy for last couple of days
Hi, Anshu!
How are you doing? Any progress so far?
On Apr 30, Anshu Avinash wrote:
And, by the way, when you start coding (May 19) or earlier, as you
prefer, I would like to start seeing some kind of weekly updates from
you. In email or in your blog - whatever you feel more comfortable
Hi!
On 8 May 2014, at 22:33, Sergei Golubchik s...@mariadb.org wrote:
Hi, Anshu!
How are you doing? Any progress so far?
On Apr 30, Anshu Avinash wrote:
And, by the way, when you start coding (May 19) or earlier, as you
prefer, I would like to start seeing some kind of weekly updates
Hi, Anshu!
So, how do we start?
I see you're often present on irc, which is great.
You've looked at the code, what do you think?
Do you understand how different parts of this feature fit together?
We can start from just one constant (global or per-engine) and see how
it'll work.
And, by the
Hi,
I had been busy with my exams (which got finished today). I'll come up with
more detailed working plan and doubts in a couple of days.
On Tue, Apr 29, 2014 at 11:28 PM, Sergei Golubchik s...@mariadb.org wrote:
Hi, Anshu!
So, how do we start?
Till now, I have not done much. I had
Hi, Anshu!
On Apr 30, Anshu Avinash wrote:
You've looked at the code, what do you think?
Do you understand how different parts of this feature fit together?
We can start from just one constant (global or per-engine) and see how
it'll work.
I had started exploring tmptable_create_cost.
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