ArrayFire Users

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Welcome to the ArrayFire Users Group. This is our primary mailing list and forum for technical discussions about ArrayFire.

Feel free to post here about issues, new feature requests etc.

When creating a post about an error, please try to include the following:

Output from af::info
If af::info is not available, please enter OS, ArrayFire Commit ID (7 character alphanumeric code), Device name/model number, backend used
Any relevant information/code to reproduce the error

We may ask you to create issues on our GitHub repository.

ArrayFire binaries/installers are available at: http://arrayfire.com/download/

ArrayFire build instructions are available at: https://github.com/arrayfire/arrayfire/wiki

For blogs, examples, benchmarks etc visit http://arrayfire.com/blog/

For consulting, support or training opportunities, visit http://arrayfire.com/.

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Alex Shroyer

Jan 11

How to free sparse array?

Hi, I'm wondering why the memory seems to not be freed in this example, and how to free memory

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How to free sparse array?

Hi, I'm wondering why the memory seems to not be freed in this example, and how to free memory

Jan 11

Avinash Rangarajan, uma...@gmail.com2

Jan 5

createStridedArray()

Hey Avinash, You should include af/internal.h in your file. This is a special header so you need so

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createStridedArray()

Hey Avinash, You should include af/internal.h in your file. This is a special header so you need so

Jan 5

Alex Shroyer

12/17/21

How do you know how much data your GPU can handle?

I have an old GPU with 4GB on-device, but when I tried to do an ArrayFire operation on an array of

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How do you know how much data your GPU can handle?

I have an old GPU with 4GB on-device, but when I tried to do an ArrayFire operation on an array of

12/17/21

Alex Shroyer, John Melonakos3

12/6/21

row-major matmul?

Great! On Mon, Dec 6, 2021 at 1:33 PM Alex Shroyer <ashroyer@gmail.com> wrote: Ah, here it is:

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row-major matmul?

Great! On Mon, Dec 6, 2021 at 1:33 PM Alex Shroyer <ashroyer@gmail.com> wrote: Ah, here it is:

12/6/21

Alex Shroyer, … John Melonakos6

12/5/21

How is af_array data arranged in memory?

Wonderful, let us know if you have any other questions. On Sun, Dec 5, 2021 at 12:12 PM Alex Shroyer

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How is af_array data arranged in memory?

Wonderful, let us know if you have any other questions. On Sun, Dec 5, 2021 at 12:12 PM Alex Shroyer

12/5/21

Theodoulis, John Melonakos2

11/29/21

Status of ArrayFire ML and Automatic Differentiation

Facebook picked up ArrayFire-ML and has added a ton of features in the Flashlight project, built

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Status of ArrayFire ML and Automatic Differentiation

Facebook picked up ArrayFire-ML and has added a ton of features in the Flashlight project, built

11/29/21

morteza Namvar

11/29/21

Non-blocking data transfer between device and host

Hi everybody Is it possible to use non-blocking data transfer between host and device in ArrayFire?

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Non-blocking data transfer between device and host

Hi everybody Is it possible to use non-blocking data transfer between host and device in ArrayFire?

11/29/21

Muhammad Hassan Khan

11/17/21

Using ArrayFire with Boost Compute Library

Hi, I am trying to run a code which uses functions from both boost compute library and arrayfire

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Using ArrayFire with Boost Compute Library

Hi, I am trying to run a code which uses functions from both boost compute library and arrayfire

11/17/21

Alex Shroyer, uma...@gmail.com5

10/25/21

Trouble translating to C API

Thanks Umar, that makes sense. On Monday, October 25, 2021 at 12:02:11 PM UTC-4 uma...@gmail.com

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Trouble translating to C API

Thanks Umar, that makes sense. On Monday, October 25, 2021 at 12:02:11 PM UTC-4 uma...@gmail.com

10/25/21

Dhia Slama

10/23/21

Indexing issue

Hi, I have an issue converting loops in c++ code into vectorized arrayfire arrays : for (int k = 0; k

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Indexing issue

Hi, I have an issue converting loops in c++ code into vectorized arrayfire arrays : for (int k = 0; k

10/23/21

Alex Shroyer, … uma...@gmail.com5

10/23/21

libafcpu.so.3: cannot open shared object file

Thanks, I installed in /opt/arrayfire to keep things simpler for now. It might have been that I only

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libafcpu.so.3: cannot open shared object file

Thanks, I installed in /opt/arrayfire to keep things simpler for now. It might have been that I only

10/23/21

Mpereke Evans, Pradeep Garigipati3

10/19/21

error af::replace(af::array&, af::array const&, double const&) in /opt/arrayfire/lib64/libafcuda.so.3

A workaround to this problem is to use a the "select" function instead of "replace

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error af::replace(af::array&, af::array const&, double const&) in /opt/arrayfire/lib64/libafcuda.so.3

A workaround to this problem is to use a the "select" function instead of "replace

10/19/21

vduva...@gmail.com, Pradeep Garigipati4

10/5/21

On Windows in VisualStudio 2019 when using af.lib only CUDA GPU shows up...

If you are trying to ascertain available devices per backend and switch if one backend doesn't

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On Windows in VisualStudio 2019 when using af.lib only CUDA GPU shows up...

If you are trying to ascertain available devices per backend and switch if one backend doesn't

10/5/21

vduva...@gmail.com, Pradeep Garigipati3

10/4/21

Placing < windows.h> before <arrayfire.h> causes compilation errors

Thank you Pradeep. That solved this issue. On Monday, October 4, 2021 at 12:27:46 AM UTC-4 Pradeep

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Placing < windows.h> before <arrayfire.h> causes compilation errors

Thank you Pradeep. That solved this issue. On Monday, October 4, 2021 at 12:27:46 AM UTC-4 Pradeep

10/4/21

thomas d, Pradeep Garigipati2

10/4/21

arrayfire on nvidia jetson xavier cuda 10.2

Hello Thomas, Are you referring to the tegra x1 sh file for version 3.5.1 ? On Mon, Oct 4, 2021 at 6:

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arrayfire on nvidia jetson xavier cuda 10.2

Hello Thomas, Are you referring to the tegra x1 sh file for version 3.5.1 ? On Mon, Oct 4, 2021 at 6:

10/4/21

Muneer, … John Melonakos6

9/27/21

Partial sorting of an array

I saw that this thread is the 26th reference in a recently published paper, https://arxiv.org/pdf/

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Partial sorting of an array

I saw that this thread is the 26th reference in a recently published paper, https://arxiv.org/pdf/

9/27/21

Chen Larry, ste...@arrayfire.com2

9/16/21

cannot find entry point on windows

You need to add the ArrayFire libraries to the PATH for runtime linking, usually at "C:\Program

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cannot find entry point on windows

You need to add the ArrayFire libraries to the PATH for runtime linking, usually at "C:\Program

9/16/21

Mpereke Evans, Pradeep Garigipati3

9/14/21

GLX: Failed to make context currentX Error of failed request: GLXBadContextTag

Hi Pradeep I found that a workaround to the problem was to also create a dummy af::window in the main

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GLX: Failed to make context currentX Error of failed request: GLXBadContextTag

Hi Pradeep I found that a workaround to the problem was to also create a dummy af::window in the main

9/14/21

Some Body

9/13/21

Raytracing in a weekend using ArrayFire

Is it possible? The original "raytracing in a weekend" (https://raytracing.github.io/) runs

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Raytracing in a weekend using ArrayFire

Is it possible? The original "raytracing in a weekend" (https://raytracing.github.io/) runs

9/13/21

Chen Larry

9/11/21

Can Arrayfire function called from pure c++?

I want to use ArrayFire in my current c++ project, can I just build arrayfire part as a .lib, and

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Can Arrayfire function called from pure c++?

I want to use ArrayFire in my current c++ project, can I just build arrayfire part as a .lib, and

9/11/21

Avinash Rangarajan, Pradeep Garigipati6

8/16/21

shift operation of independent column

Thanks for detail explanation and effort for letting the right way to use gfor and shift. Regards R

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shift operation of independent column

Thanks for detail explanation and effort for letting the right way to use gfor and shift. Regards R

8/16/21

Pietro Mele

7/21/21

Can run ArrayFire on my CPU only, not on the intergrated GPU

I could build all the examples of the ArrayFire project (except the CUDA ones, having an AMD APU).

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Can run ArrayFire on my CPU only, not on the intergrated GPU

I could build all the examples of the ArrayFire project (except the CUDA ones, having an AMD APU).

7/21/21

Philip Murray

7/16/21

Wondering about performance cost for AF to allocate memory for matmul return

Hi, I am using Arrayfire C++ with a cuda backend. For a C = AB matrix multiplication, in cublas you

unread,

Wondering about performance cost for AF to allocate memory for matmul return

Hi, I am using Arrayfire C++ with a cuda backend. For a C = AB matrix multiplication, in cublas you

7/16/21

Avinash Rangarajan, Pradeep Garigipati10

7/8/21

inconsistency in timing af::where

JIT helps with combining multiple individual operations into a single GPU kernel. For example,

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inconsistency in timing af::where

JIT helps with combining multiple individual operations into a single GPU kernel. For example,

7/8/21

Joe Georger, … Pradeep Garigipati4

7/7/21

host pointer to complex array?

That is unexpected, here is a full blown standalone example code (followed by the sample output) that

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host pointer to complex array?

That is unexpected, here is a full blown standalone example code (followed by the sample output) that

7/7/21

Sue Park, Pradeep Garigipati2

6/22/21

Bessel function

Hello Sue, During our move from closed source to open source with the 3.0 version, we had to drop

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Bessel function

Hello Sue, During our move from closed source to open source with the 3.0 version, we had to drop

6/22/21

Chi Ng, Pradeep Garigipati2

6/21/21

how to remove element from array ?

Hello Chi, Exact operation is not possible via function/array-method I believe, but an equivalent

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how to remove element from array ?

Hello Chi, Exact operation is not possible via function/array-method I believe, but an equivalent

6/21/21

Haydn Vestal, Pradeep Garigipati2

6/21/21

ArrayFire on M1 Mac

Hey Haydn, I don't think any of our team members tried building on M1 directly. If required

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ArrayFire on M1 Mac

Hey Haydn, I don't think any of our team members tried building on M1 directly. If required

6/21/21

Gennadiy Rishkin, Pradeep Garigipati2

6/21/21

Krylov Subspace Solvers and Preconditioners

Hello, Given below is entire set of linear algebra functions we currently have in arrayfire https://

unread,

Krylov Subspace Solvers and Preconditioners

Hello, Given below is entire set of linear algebra functions we currently have in arrayfire https://

6/21/21

Avinash Rangarajan, uma...@gmail.com3

6/17/21

indexing inside gfor

I could see only diff1 and diff2 functions. Further, inside a gfor for an dimensional array, i like

unread,

indexing inside gfor

I could see only diff1 and diff2 functions. Further, inside a gfor for an dimensional array, i like

6/17/21