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May 14 2019 01:33

poulson closed #276
May 14 2019 01:33

poulson commented #276
May 14 2019 01:30

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May 10 2019 21:37

jedbrown commented #276
May 10 2019 21:25

poulson commented #276
May 10 2019 21:21

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May 10 2019 17:08

poulson commented #276
May 10 2019 17:03

tesch1 opened #276
Apr 10 2019 13:18

JM1 commented #275
Apr 10 2019 13:16

JM1 synchronize #275
Apr 10 2019 08:56

JM1 opened #275
Mar 06 2019 03:47

Raviteja1996 closed #274
Mar 05 2019 05:46

Raviteja1996 opened #274
Feb 11 2019 21:53

BenBrock commented #228
Feb 11 2019 21:52

BenBrock commented #228
Feb 11 2019 21:51

poulson commented #228
Feb 11 2019 21:50

poulson commented #228
Feb 11 2019 21:45

BenBrock commented #228
Jan 23 2019 23:57

adambaskerville commented #273

Carlos Borges

@cecborges_twitter

I am

Jack Poulson

@poulson

I thought you were in academia? ;-)

Carlos Borges

@cecborges_twitter

I am

Jack Poulson

@poulson

you have to ask for permission to release open source?

Carlos Borges

@cecborges_twitter

I am at ICES. I worked with George

Jack Poulson

@poulson

fair enough

Carlos Borges

@cecborges_twitter

I don't know if he wants to release it. I think he wants it. But I would not release it before asking him

Jack Poulson

@poulson

ah, fair enough if it is existing project

I would worry more about whether Elemental is the right place to release rather than if it should be released though

Carlos Borges

@cecborges_twitter

It is a existing project. We are implementing FAIMS(method for solving inverse scattering problems) at 3D with several processors. BTW, why are you shipping elemental to use with openblas?

I am writing the entire method with elemental instead of Petsc.

Jack Poulson

@poulson

What is wrong with OpenBLAS?

I assume you are implicitly asking why not BLIS?

Carlos Borges

@cecborges_twitter

yes

Jack Poulson

@poulson

(the answer is that OpenBLAS is in more package managers and BLIS is harder to configure)

Carlos Borges

@cecborges_twitter

Also, I don't know if you had this problem, but if I run elemental using more than one processor with multiple threads it is breaking(with openblas). I can actually send you the error output.

I can run using mip with several processors, but if I don't set openblas_num_threads=1 I get some memory problems. Any ideas of what it can be?

Sorry if I look like an idiot in this one. It is just that I can't get it to work in any way possible.

Jack Poulson

@poulson

What build configuration did you use?

There is no reason to feel ashamed.

Could you file a detailed GitHub issue?

Carlos Borges

@cecborges_twitter

I can. I am running some tests right now but I will do it tomorrow.

Jack Poulson

@poulson

No worries.

Carlos Borges

@cecborges_twitter

Thanks for the help.

Jack Poulson

@poulson

Btw, you may want to look at my randomized column pivoted QR

It includes some random projections and could be used as a template for contributing randomized QR

Carlos Borges

@cecborges_twitter

I will take a look. Is it committed to the website? The one that I implemented takes functions as input.

I need to use functions because my matrix vector multiplication actually is a integral operator.

Jack Poulson

@poulson

it's here: https://github.com/elemental/Elemental/blob/master/include/El/lapack_like/factor/qr/ProxyHouseholder.hpp

Carlos Borges

@cecborges_twitter

I have also another question regarding the command resize for a a distributed matrix. I would expect it to work similarly to matlab, I mean if you have a 3 x3 matrix and try to resize to a 9x1 matrix, the command would stack the columns of the matrix. Is this what I should expect? I believe that in some of the col and row aligns it was not working like that.

Jack Poulson

@poulson

the Gemm calls can be replaced with std::function calls similar to the way I implemented FGMRES

ah, that would be reshape

which does not exist in Elemental

at least, I don't think I ever implemented it

err, actually I did implement Reshape

Carlos Borges

@cecborges_twitter

I implemented using bind, instead of function, but the code is very similar

Jack Poulson

@poulson

https://github.com/elemental/Elemental/blob/master/include/El/blas_like/level1/Reshape.hpp

Carlos Borges

@cecborges_twitter

Ah ok. I actually made a copy of the matrix using <T,CIRC,CIRC> and them I used resize on this copy and this gives me the same as reshape.

DistMatrix<T,El::CIRC,El::CIRC> C_copy(C.Height(),C.Width(),g);
C_copy=C;
C_copy.Resize(C_copy.Height()*C_copy.Width(),1);

Jack Poulson

@poulson

I would highly recommend calling Reshape instead

The CIRC,CIRC distribution puts the entire matrix on one process

Carlos Borges

@cecborges_twitter

Thanks I will do that, and it also saves me some trouble in having to change the distribution.

Jack Poulson

@poulson

please feel free to ask any questions if you run into anymore road blocks

Carlos Borges

@cecborges_twitter

thank you very much.

i started working on it last year but didn't find much material online.

Demian Wassermann

@demianw

Hi! I'm trying to install Elemental into an Anaconda environment python 3.5. After succesfully checking the python options building and installing with CMAKE, the Elemental python module seems to not be there. Any ideas on this? Thanks!

Jack Poulson

@poulson

This is good motivation to push out the Anaconda package being discussed at elemental/Elemental#207

What CMake configuration flags did you use?

the usual issue is that you need to make sure your PYTHONPATH includes the Python installation directory

Also DYLD_LIBRARY_PATH needs to be set: http://libelemental.org/documentation/dev/build.html#mac-os-x