bugno comments

Results 25 comments of


                                            bugno

[MultiGPU] No convergence for Classical AMG with Cuda version>11.2 in my code when linked with AmgX (not reproduced in AmgX standalone)

To be sure, I just run again the poisson AmgXWrapper test with AmgX_CSR API on 2 GPUs with CUDA 11.4 and my configfile (with Classical AMG), and it works fine....

[MultiGPU] No convergence for Classical AMG with Cuda version>11.2 in my code when linked with AmgX (not reproduced in AmgX standalone)

Thanks, I will have a look and experiment with the amgx_spmv_test.c as soon as I get some time and will report.

[MultiGPU] No convergence for Classical AMG with Cuda version>11.2 in my code when linked with AmgX (not reproduced in AmgX standalone)

Just to say, the issue has gone with my code. And can't say why :-)

HYPRE Struct - problems using GPU-aware MPI

Hello, I have similar issues with Hypre (CG+Boomeramg, used through PETSc) with MPI Gpu-Aware. OpenMPI 4.x (no GPU Aware) -> OK for all my tests OpenMPI 4.x GPU Aware ->...

MPI Cuda-Aware enabled in Hypre ?

Hi Victor, Thanks for your help, sure I can share a PETSc reproducer. The Nsight profile above is from it: You would need to build PETSC 3.23.2 with Hypre 3.23...