srch

Hi all, the solver for my project (1Mio DOFs) is using the direct Sparse Matrix solver.

) The sparse solver is a frontal type solver that has been optimized for sparsely populated matrices like those found in finite element analysis. From: ANSYS ...

14.06.2021 · MUltifrontal Massively Parallel Sparse direct solver (or MUMPS) is a sparse solver that is optimized for solving the system of equations in parallel. …

Sparse Solver Memory Usage Example 1 (cont.) ANSYS 6.0 memory allocation. Initial memory increased to 800 Mbytes. 800 Mbytes exceeds. Optimal I/ ...

• Sparse, PCG and ICCG solvers cover 95% of all ANSYS applications • Sparse solver is now default in most cases for robustness and efficiency reasons Solver Usage: Choices • Sparse direct solver ( BCSLIB ) • PCG solver (PowerSolver) • Frontal solver • ICCG • JCG Listed by order of usage popularity

Oct 04, 2016 · 1) I choose Direct sparse solver as an equation solver and for equilibrium equation solver NR. Basically , Where does the program use the Sparse Solving technique, and where the Newton Raphson ? Condition 2: 2) I choose PCG solver (or any iterative solver) for equation solver and again NR for the equilibrium equations.

02.11.2021 · Hi @bharath_reddy1 also did the linear solve (large deflections turned off) use the Iterative solver? It requires about an order of magnitude less RAM than the Direct (Sparse) does. You can try specifying the solver type to be Iterative in the Details of the Analysis Settings, on the large deflection model, and see if it will solve or not.

06.08.2021 · As you note, the direct solver, also called the SPARSE SOLVER, uses LU decomposition to solve the stiffness matrix equation. The PCG solver uses an iterative algorithm to solve the stiffness matrix equation. In a linear analysis, that is done once.

MUltifrontal Massively Parallel Sparse direct solver (or MUMPS) is a sparse solver that is optimized for solving the system of equations in ...

ANSYS Inc. Canonsburg, PA, USA Abstract—As hardware accelerators and especially GPUs be-come more and more popular to accelerate the compute intensive parts of an algorithm, standard high performance computing packages are starting to benefit from this trend. We present the first GPU acceleration of the ANSYS direct sparse solver.

Reduces disk I/O requirement relative to sparse solver. Best for large models with solid elements and fine meshes. Most robust iterative solver in ANSYS.

In recent years the addition of the Boeing sparse matrix library for modal and static analysis, and a proprietary preconditioned conjugate gradient solver as ...

The sparse solver is a frontal type solver that has been optimized for sparsely populated matrices like those found in finite element analysis. It is recommended for nonlinear problems and is well suited for ill-conditioned problems. The PCG solver (also known as the Power Solver) is an iterative conjugate gradient solver.

• Sparse, PCG and ICCG solvers cover 95% of all ANSYS applications • Sparse solver is now default in most cases for robustness and efficiency reasons Solver Usage: Choices • Sparse direct solver ( BCSLIB ) • PCG solver (PowerSolver) • Frontal solver • ICCG • JCG Listed by order of usage popularity

The sparse direct solver is the default solver for all analyses, with the exception of modal/buckling analyses. For modal/buckling analyses, there is no default solver. must specify a solver with the MODOPTor BUCOPTcommand. The specified solver automatically chooses

Basically , Where does the program use the Sparse Solving technique, and where the Newton Raphson ? Condition 2: 2) I choose PCG solver (or any ...

sparse-direct-solver. Discussion List. A. Does non-linear analysis in ANSYS also make use of direct solvers or not? Accepted Answer 689 views 56 comments. 0 points. Most recent by peteroznewman December 2021 Structures. Howdy, Stranger! It looks like you're new here.

The sparse solver is a frontal type solver that has been optimized for sparsely populated matrices like those found in finite element analysis. It is recommended for nonlinear problems and is well suited for ill-conditioned problems. The PCG solver (also known as the Power Solver) is an iterative conjugate gradient solver.

6 strength sparse solver, and hence the ability for solving large user-specified cross sections. It is possible to specify the mesh quality for the section solution. The cross sections can also be comprised of a number of orthotropic materials, allowing for analysis of sandwich and built-up cross sections.

The ANSYS program offers a large number of iterative solvers as alternatives to the direct solvers (sparse solver). These alternatives in many cases can ...