circuit simulation, Kiran Gullapalli, Freescale Semiconductor, Inc.
Name FullChip
Group Freescale
Matrix ID 2380
Num Rows 2,987,012
Num Cols 2,987,012
Nonzeros 26,621,983
Pattern Entries 26,621,990
Kind Circuit Simulation Problem
Symmetric No
Date 2011
Author K. Gullapalli
Editor T. Davis
Structural Rank 2,987,012
Structural Rank Full true
Num Dmperm Blocks 35
Strongly Connect Components 35
Num Explicit Zeros 7
Pattern Symmetry 100%
Numeric Symmetry 0.6%
Cholesky Candidate no
Positive Definite no
Type real
Download MATLAB Rutherford Boeing Matrix Market
Full-chip circuit simulation matrix from Kiran Gullapalli, Freescale  
Semiconductor, Inc.                                                   
This is a full-chip (everything that is actually built in silicon is  
in the netlist), for an automotive part.  For simulation, the         
flash-memory and sram-memory cores are removed. But everything else is
in the matrix.                                                        
The chip takes an external battery (voltage source), but has internal 
voltage generators. the node of the external battery can be removed   
from the matrix. but the internal generators create some VERY HIGH    
degree nodes. So, there are about 6 nodes with degree greater than    
1000 (actually, the degree is 2M+ for 2 of these).                    
After ordering, nnz(L+U) = 200,180,468, with about 1.03793E+11        
flops (a += b * c is counted as one flop).