PCGLSS
Solver |
| • |
Extremely
fast, parallel, iterative and direct solver capable of handling
models over 7 million degrees of freedom on a Pentium PC |
| • |
Multi-mode
solver using either an iterative (Preconditioned Conjugate
Gradient) or direct solution technique |
| • |
The
iterative solver mode requires less physical memory and disk
storage than direct solver mode |
• |
Automatically
selects the most efficient mode of operation based on available
resources |
| • |
Advanced
preconditioner is optimized for all element types |
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Available
in all linear and nonlinear static solutions |
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Supports
multiple processors (parallel processing) |
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Especially
effective for large models comprised mainly of parabolic tetrahedron
elements (CTETRA) |
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User
controllable performance and accuracy |
| • |
Accuracy
measure output |
| • |
Supported
in all NEi
Nastran
solutions except direct transient and direct frequency response |
| • |
Windows,
Linux, and Unix versions |
 |
 |
Modal Frequency Response Analysis of an Automotive
Frame: 3,163,596 DOF. Total Solution time:
3.2 hr. (75 modes) and 7.5 hr. (150 modes). Run on a
dual Intel Xeon + 3.2 GHz CPU with 3GB of RAM. |
|
PSS
Solver (x64 Windows) |
| • |
Extremely
fast parallel direct solver capable of handling models over
15 million degrees of freedom |
| • |
Increased
efficiency and performance using supernode techniques with
update and pipelining parallelism |
| • |
Supernode
pivoting ensures numerical stability and scalability during
factorization |
• |
Parallel
scalability is nearly independent of the shared-memory multiprocessing
architecture (performance increases of seven using eight processors
have been observed) |
| • |
Handles
non-positive definite matrixes |
| • |
Accuracy
measure output |
| • |
Supported
in all NEi
Nastran solutions |
VSS
Solver |
| • |
Based
on NASA Vector Sparse Solver technology |
| • |
Handles
a wide range of model sizes |
| • |
Uses
advanced reordering methods automatically selecting the most
efficient one |
| • |
Handles
non-positive definite and ill-conditioned matrixes |
| • |
Accuracy
measure output |
| • |
Supported
in all NEi
Nastran
solutions |
| • |
Windows,
Linux, and Unix versions |
 |
 |
Cargo Ship Linear Static Analysis:
10,963,000 DOF. Total Solution time: 3.58 hr. Run on
an Intel Itanium 2 1.0 Ghz CPU with 6GB of RAM in 64-bit
NEi Nastran for Linux. |
|