General Sparse Matrix Description

Typical Sparse Matrix Description

• IA - contains pointers to beginning of each row of sparse matrix.
• JA - contains column number for each nonzero in sparse matrix.
• A - contains nonzero values.

Typical Description of Sparse Matrices in Cm

• ISC --> JA (C = column)
• ISR --> IA (R = row)
• A

Description of Matrices

• GKK - constraint reduced global stiffness matrix for given problem type - taken from GK by adjusting rows to account for boundary conditions.
• GD - global damping matrix (1st order time derivatives) or domain integrals or dipole source terms.
• GK - global stiffness mtrix (zeroth order time derivatives) - global matrix with no BCs set.
• GM - global mass matrix (2nd order time derivatives)
• GMM - constraint reduced global mass matrix

GQ - RHS matrix