MAGMA Forum

Yes, magma_dmalloc is just a wrapper around cudaMalloc. It is type-safe (you don't need to use sizeof(double) as you do with cudaMalloc), but otherwise nothing special going on. If you call asynchronous MAGMA routines that take a magma_queue, use the stream from the magma_queue to call CUDA function...

I'm not sure what you mean by "the arrays created by MAGMA routines". Do you mean arrays allocated by, say, magma_dmalloc? Yes, that's just a chunk of memory on the GPU, so you can process it equally well with MAGMA, cuBLAS, and your own custom CUDA kernels. It sounds like checking the coefficients ...

You need to have a Bitbucket account to post bug reports. I posted this there for tracking:
https://bitbucket.org/icl/magma/issues/ ... es-nans-on

-mark

Use magma_dgemm. It is simply a wrapper around cublasDgemm. magmablas_dgemm is MAGMA's own implementation, which dates back to the Fermi architecture. NVIDIA adapted this implementation for the cublasDgemm, and further optimized it. We keep the code around in case someone wants an open-source implem...

I think you are on the wrong forum. This forum is for MAGMA, the GPU library for linear algebra (http://icl.utk.edu/magma/). It sounds like you want MAGMA, the computational algebra system (http://magma.maths.usyd.edu.au/magma/).
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Yes, unfortunately here the time gets rounded down. But the performance is reflected in the Gflop/s rate. You can compute the approximate time using the formula:

2/3 n^3 * batch_count / (gflop/s)

For instance

2/3 * 100^3 * 500 / 158.36e9 = 0.0021 sec.

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MAGMA 1.0 is quite old, so I personally wouldn't bother. If you insist, there are MAGMA_VERSION_MAJOR, _MINOR, and _MICRO macros. See include/magma_types.h. clMAGMA is not actively maintained — even AMD's clBLAS is a couple years old at this point. clMAGMA uses HAVE_clAmdBlas or HAVE_clBLAS macros, ...

This forum is for the MAGMA linear algebra library for GPUs (http://icl.utk.edu/magma/). It doesn't solve polynomial equations. Perhaps you are intending the Magma Computational Algebra System (http://magma.maths.usyd.edu.au/magma/).
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When using xlf, use -DNOCHANGE instead of -DADD_ in the make.inc file when compiling MAGMA. Then it will use the correct Fortran naming convention for IBM's Fortran. Ideally, the whole software stack — e.g., BLAS, LAPACK, MAGMA, your application — are compiled using the same set of compilers (e.g., ...

We'll look into it, though it might take a little while as we don't have any Windows machines readily setup for testing. All our development is on Linux and macOS.
-mark