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About time required for launching MAGMA kernels in host

Posted: Mon Dec 03, 2018 4:22 am
by lakenear
Hello everyone.

I am using MAGMA library, magma_dgels_gpu in more details, for obtaining least square solutions of an equation, 'Ax=b'.

During a profiling process of my algorithm, I have found that there is unignorable latency for launching MAGMA kernel, magm_dgels_gpu as shown in the attached file.

With regard to the mentioned issue above, I came up with two questions and hoped if I can have some advice thankfully.

1. Would there be any way of reducing the time for launching MAGMA kernel?

2. Can MAGMA kernel be called in device kernels by means of 'dynamic parallelism'?

Thank you for your help and time.

Best regards.