MAGMA Forum

Are you following the steps using CMake in README-Windows? Can you be more specific about what happened and when the error occurred?
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Yes, though since Apple has stopped supporting NVIDIA cards on MacOS Mojave (10.14), anything using CUDA is limited to MacOS 10.13 and older (as I understand it). Compiling MAGMA on MacOS is similar to on Linux. I use the gcc & gfortran compilers from HPC MacOS X: http://hpc.sourceforge.net/ Follow ...

From a magma/build directory, try:
This assumes CMake >= 3.4.
See https://blog.kitware.com/create-dlls-on ... l-feature/

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I haven't seen this, but usually use the Makefile, not CMake. When I use CMake on Windows, I use MS Visual Studio (the free version works fine). I gather you run CMake to configure MAGMA. What build system do you use after configuring with CMake: Makefile, MS Visual Studio, ...?
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Because of the complexity of managing an array distributed across multiple GPUs, we don't currently have a version of sygvdx_m where the matrix is given on the GPUs (i.e., sygvdx_mgpu).

I do recommend trying the 2-stage version, dsygvdx_2stage_m, which is often faster.

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First, in the future, please start a new topic, rather than replying to a 7 year old topic. Your variable names seem mixed up: there are M rows and N cols in C. You are adding beta*C multiple times. Normally I use i for rows, j for cols. Unfortunately k is used for dimension, so we need something el...

On second glance, it doesn't appear that CFLAGS is propagated to CXXFLAGS by CMake, and it won't propagate to Fortran or NVCC for CUDA. Even worse, it doesn't seem that CMake picks up NVCCFLAGS from the environment, so there doesn't appear to be a way to override or append to it, without editing CMa...

That should work. Ideally, CMake would detect 64-bit BLAS, which we do in some other projects (BLAS++) but not yet in MAGMA.
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If you compiled without CMake, then editing magma_mangling.h as you describe should work. But as you noticed, CMake #defines its own mangling macro, called MAGMA_GLOBAL, in the file magma_mangling_cmake.h. The quickest hack to do would be comment out magma_mangling_cmake (or #undef MAGMA_GLOBAL), an...

That seems fine for testing. MAGMA doesn't do anything to detect or prevent faults from bit flips. If the bit happens to be low-order (like 0.00000001), then the difference will be negligible, but if the bit happens to be high-order (like 1.) or an exponent bit, the error is likely to be significant...