xiaochiyue

Is it possible to use mixed-precision strategy on AMGX?

1

Supposing I used PCG(in double precision) as solver, and AMG(in single precision) as preconditioner, I would expect to have good performance for large scale matrix?

Mixed precision modes not currently supported for CUDA 10.1 or later?

2

Good day, everyone! I run an example, and get below amgx exception: https://img-blog.csdnimg.cn/9f0daeaaec4743ef8c3f392b0c557f79.png

What are the best practices for using AMGX scalers? Is using a scaler always beneficial?

1

Dear, AMGX 2.4.0 has three scalers: binormalization, diagnostic_Symmetric, and nbinormalization., which scaler is most suitable for the Poisson equation? Regards, xg

How to implement the caching of AMG preconditioner?

3

Dear, In the SIMPLE iterations of CFD simulation, the coefficient matrix A of the pressure Poisson equation changes slowly. Utilizing the AMG preconditioner configuration from previous iterations (caching the AMG...