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MAGMA User

1–30 of 205

Welcome to the MAGMA User Forum.

http://icl.utk.edu/magma/

The MAGMA project aims to develop a dense linear algebra library similar to LAPACK but for heterogeneous/hybrid architectures, starting with current "Multicore+GPU" systems.

For bug reports, please file an issue on GitHub. This helps us track the status.

https://github.com/icl-utk-edu/magma/issues

Note this MAGMA is different than the Magma Computational Algebra System. For help with that system, see http://magma.maths.usyd.edu.au/magma/

0 selected

Gabi Teodoru, … Natalie Beams9

May 13

Wrong result on QR decomposition when cols > 32 with magma_dgeqrf_gpu and magma_dgeqrf_gpu3

Thank you so much! Yes, I've switched to version 3 and put for( int i=0; i < k-nb; i += nb ) {

unread,

Wrong result on QR decomposition when cols > 32 with magma_dgeqrf_gpu and magma_dgeqrf_gpu3

Thank you so much! Yes, I've switched to version 3 and put for( int i=0; i < k-nb; i += nb ) {

May 13

Guilherme Fernandes de Souza Miguel, Natalie Beams2

Apr 14

Netlib Lapack function name in Magma

LAPACK provides both dgels and dgelss. They are both solvers for underdetermined/overdetermined

unread,

Netlib Lapack function name in Magma

LAPACK provides both dgels and dgelss. They are both solvers for underdetermined/overdetermined

Apr 14

Kiran V, Mark Gates8

Mar 14

New to Magma - scheduling on CPU + GPU

Yes, for an APU (CPU + GPU combo sharing memory), a CPU + GPU implementation could (theoretically) be

unread,

New to Magma - scheduling on CPU + GPU

Yes, for an APU (CPU + GPU combo sharing memory), a CPU + GPU implementation could (theoretically) be

Mar 14

Gianluca Frazzei, Mark Gates4

Mar 10

Info about magmaf_zgeev_gpu

Hi Gianluca, Can you provide some more specifics? What kind of machine are you running on (what CPU,

unread,

Info about magmaf_zgeev_gpu

Hi Gianluca, Can you provide some more specifics? What kind of machine are you running on (what CPU,

Mar 10

Yeonjun Jeong, Andrew Cunningham9

Feb 12

dx -> dy using magma_dcopyvector yields zero values for dy

Great! I used Magma for some crusty legacy Fortran F77 code a couple of years ago and had some great

unread,

dx -> dy using magma_dcopyvector yields zero values for dy

Great! I used Magma for some crusty legacy Fortran F77 code a couple of years ago and had some great

Feb 12

Chainey Ryan, … Andrew Cunningham19

Feb 11

Missing libraries for compiling examples

That worked! Thank you so much for the help On Tuesday, February 11, 2025 at 12:35:30 PM UTC-4

unread,

Missing libraries for compiling examples

That worked! Thank you so much for the help On Tuesday, February 11, 2025 at 12:35:30 PM UTC-4

Feb 11

Roland Greffe, … Andrew Cunningham6

Feb 5

MAGMA ZGESV wrong answer

Hi Natalie, Thank you so much for your time ! It was indeed the issue. I forgot that Magma used

unread,

MAGMA ZGESV wrong answer

Hi Natalie, Thank you so much for your time ! It was indeed the issue. I forgot that Magma used

Feb 5

justin greige (GreigeJ), … Andrew Cunningham31

Jan 31

Setting up MAGMA on Windows

Nice! I will download and build the new magma version Quick question about compiling the example_v2.

unread,

Setting up MAGMA on Windows

Nice! I will download and build the new magma version Quick question about compiling the example_v2.

Jan 31

spyros Liolis, Mark Gates4

Jan 29

The testing_zgetrf use only 1 thread in cpu.

I would also add that my system is linux rocky8. Στις Δευτέρα 27 Ιανουαρίου 2025 στις 5:40:34 μ.μ.

unread,

The testing_zgetrf use only 1 thread in cpu.

I would also add that my system is linux rocky8. Στις Δευτέρα 27 Ιανουαρίου 2025 στις 5:40:34 μ.μ.

Jan 29

Sam Austin, Natalie Beams3

Jan 16

Induced Dimension Reduction (IDR) solver in MAGMA

Thanks for your informative reply! That clears things up for me. Sam On Thursday, January 16, 2025 at

unread,

Induced Dimension Reduction (IDR) solver in MAGMA

Thanks for your informative reply! That clears things up for me. Sam On Thursday, January 16, 2025 at

Jan 16

Amore, … Mark Gates10

Jan 16

How to add MAGMA library into nvfortran compiler

Thanks for the link to the document you are following. `make` would generally produce both libmagma.

unread,

How to add MAGMA library into nvfortran compiler

Thanks for the link to the document you are following. `make` would generally produce both libmagma.

Jan 16

Giacomo Mulas, … Mark Gates15

12/11/24

magma_zgemm inconsistent with BLAS standard zgemm on largish matrices?

You can look at <T>LAPACK for multi-precision (CPU-only). It is templated on the data type, so

unread,

magma_zgemm inconsistent with BLAS standard zgemm on largish matrices?

You can look at <T>LAPACK for multi-precision (CPU-only). It is templated on the data type, so

12/11/24

Yeonjun Jeong, Mark Gates5

12/9/24

Subset of Columns of a Given Matrix on GPU

Thank makes sense. Thank you. Yeonjun On Monday, December 9, 2024 at 12:52:55 PM UTC-6 mga...@icl.utk

unread,

Subset of Columns of a Given Matrix on GPU

Thank makes sense. Thank you. Yeonjun On Monday, December 9, 2024 at 12:52:55 PM UTC-6 mga...@icl.utk

12/9/24

Danesh Daroui, … Natalie Beams11

12/5/24

Data transfer to GPU fails - getrf + getri error

Hi Natalie, Thanks a lot for your help. The problem is solved when I use "nc = nCells * ldda

unread,

Data transfer to GPU fails - getrf + getri error

Hi Natalie, Thanks a lot for your help. The problem is solved when I use "nc = nCells * ldda

12/5/24

11/25/24

MAGMA on NSF Access resource providers?

Just answering my own question, long after I asked it :). Yes -- MAGMA is installed on some of the

unread,

MAGMA on NSF Access resource providers?

Just answering my own question, long after I asked it :). Yes -- MAGMA is installed on some of the

11/25/24

11/25/24

large matrix multiplication

Hello, I'm looking for some feedback to see if I'm thinking about this the right way. I have

unread,

large matrix multiplication

Hello, I'm looking for some feedback to see if I'm thinking about this the right way. I have

11/25/24

Federico Cipolletta, Mark Gates3

10/25/24

Using magmaf_dsyevd_m to find eigenvalues of random matrix with multiple GPUs

Thank you for your answer, Mark. Indeed, I am using magma_dsyevd_m (which should be one of the subs

unread,

Using magmaf_dsyevd_m to find eigenvalues of random matrix with multiple GPUs

Thank you for your answer, Mark. Indeed, I am using magma_dsyevd_m (which should be one of the subs

10/25/24

Xuanhao Bao, Ahmad Abdelfattah2

10/24/24

magma_dgesv_batched_small

Hi, The short answer is: you should use magma_dgesv_batched. It calls magma_dgesv_batched_small

unread,

magma_dgesv_batched_small

Hi, The short answer is: you should use magma_dgesv_batched. It calls magma_dgesv_batched_small

10/24/24

Danesh Daroui, Mark Gates5

10/14/24

Memory access on GPU (device) to avoid host-device transfer

Hi Danesh, On Mon, Oct 14, 2024 at 3:53 AM Danesh Daroui <danesh...@gmail.com> wrote: Hi

unread,

Memory access on GPU (device) to avoid host-device transfer

Hi Danesh, On Mon, Oct 14, 2024 at 3:53 AM Danesh Daroui <danesh...@gmail.com> wrote: Hi

10/14/24

黄一旻, Mark Gates2

10/13/24

Problem when building MAGMA with ./tools/codegen.py

It's hard to know without seeing more of your compilation and your make.inc file. The error

unread,

Problem when building MAGMA with ./tools/codegen.py

It's hard to know without seeing more of your compilation and your make.inc file. The error

10/13/24

10/13/24

Hi all, I attempt to install magma in a conda environment, attachment is my make.inc file. Everything

unread,

Hi all, I attempt to install magma in a conda environment, attachment is my make.inc file. Everything

10/13/24

Rayeed Rahman, … Danesh Daroui4

10/11/24

Magma dgetrf + dgetrs does not match matlab LU decomp + FW/BW solve

Thank you very much for the suggestions. On Monday, October 7, 2024 at 5:01:55 PM UTC-4 danesh...@

unread,

Magma dgetrf + dgetrs does not match matlab LU decomp + FW/BW solve

Thank you very much for the suggestions. On Monday, October 7, 2024 at 5:01:55 PM UTC-4 danesh...@

10/11/24

Danesh Daroui, Ahmad Abdelfattah3

10/7/24

MAGMA build fails using CUDA toolkit 12.6 Update 2

Hi Ahmed, Thanks for your help. I cloned MAGMA from github and the problem is gone. Regards, Danesh

unread,

MAGMA build fails using CUDA toolkit 12.6 Update 2

Hi Ahmed, Thanks for your help. I cloned MAGMA from github and the problem is gone. Regards, Danesh

10/7/24

Pavel Stishenko, … Mark Gates4

9/11/24

hipErrorNoBinaryForGpu when built for HIP

Thanks for suggestion Mark. I have tried editing CMakeLists.txt as you said, but it didn't help I

unread,

hipErrorNoBinaryForGpu when built for HIP

Thanks for suggestion Mark. I have tried editing CMakeLists.txt as you said, but it didn't help I

9/11/24

Zgjim Rrustemi, Ahmad Abdelfattah5

9/3/24

Building MAGMA with Intel oneAPI

Hello Ahmad, I cloned magma from bitbucket with git, I'm using CUDA 12.6 with Intel oneAPI 2024.2

unread,

Building MAGMA with Intel oneAPI

Hello Ahmad, I cloned magma from bitbucket with git, I'm using CUDA 12.6 with Intel oneAPI 2024.2

9/3/24

Anurag Nimonkar

8/23/24

Cannot link MAGMA backend of SUNDIALS externally

Hi, A detailed description of my problem is posted here: ERROR SUMMARY : Building PION with SUNDIALS

unread,

Cannot link MAGMA backend of SUNDIALS externally

Hi, A detailed description of my problem is posted here: ERROR SUMMARY : Building PION with SUNDIALS

8/23/24

Pauleonix, … Ahmad Abdelfattah5

8/20/24

Compilation fails with CUDA 12.6

Thank you for raising the issue. A simple fix will soon be pushed. We have just moved to GitHub. The

unread,

Compilation fails with CUDA 12.6

Thank you for raising the issue. A simple fix will soon be pushed. We have just moved to GitHub. The

8/20/24

zeqe tolaj, Mark Gates3

8/19/24

Hi Mark, This is the link. ifx -o estm estm.f90 -I/home/srv/Desktop/magma-2.8.0/build/include -L/home

unread,

Hi Mark, This is the link. ifx -o estm estm.f90 -I/home/srv/Desktop/magma-2.8.0/build/include -L/home

8/19/24

Danesh Daroui, … Mark Gates5

8/9/24

Ada Lovelace graphic card - MAGMA supports?

For valid architectures, see https://docs.nvidia.com/cuda/cuda-compiler-driver-nvcc/#gpu-feature-list

unread,

Ada Lovelace graphic card - MAGMA supports?

For valid architectures, see https://docs.nvidia.com/cuda/cuda-compiler-driver-nvcc/#gpu-feature-list

8/9/24

Anurag Nimonkar, Ahmad Abdelfattah2

8/1/24

Can't find installation instructions for MAGMA

Hi, We can help only with the MAGMA installation. Was the MAGMA build complete? If yes, can you

unread,

Can't find installation instructions for MAGMA

Hi, We can help only with the MAGMA installation. Was the MAGMA build complete? If yes, can you

8/1/24

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