MSC/NASTRAN V70.5.1 Million DOF Performance Data
This page contains graphs of CPU and Elapsed times for two models larger
than 1 million DOF. The runs were made by hardware vendors with specific
run specifications. Hardware vendors were also given the opportunity to
rerun the jobs with different command line paramters. Results of these
runs are labeled MODEL_opt in the graph.
Below is a summary of the test problems.
| Name |
Ndof |
Description |
SOL |
MEM |
SCR Disk |
I/O Transferred |
Comments |
| XXCMD |
1,519,472 |
Car Body |
103 |
400 Mb |
42.6 Gb |
2116 Gb |
1076 Modes |
| XXDMD |
1,920,855 |
Engine |
103 |
960 Mb |
29.9 Gb |
475 Gb |
17 Modes |
Comments are listed below: 
- The parameters for the optimized runs are vendor confidential.
- The number of solves is different for each vendor. This difference
is a result of the fact that shift logic is based on various module
times. The CPU and elapsed times (in seconds) as well as the number
of solves are shown in the following table:
| Vendor |
Hardware |
XXCMD |
XXDMD |
| CPU |
Elapsed |
# of Solves |
CPU |
Elapsed |
# of Solves |
| sun |
E6000 336MHz_opt |
|
|
|
70745 |
71416 |
16 |
| sun |
E4000 336MHz |
181043 |
253643 |
318 |
88068 |
243251 |
16 |
| sgi |
origin R12000 300MHz_opt |
63999 |
65685 |
369 |
46429 |
19591 |
15 |
| sgi |
origin R12000 300MHz |
69246 |
71987 |
330 |
35482 |
43163 |
21 |
| nec |
SX4_opt |
15044 |
17985 |
159 |
|
|
|
| nec |
SX4 |
20922 |
25789 |
321 |
22940 |
24180 |
29 |
| intel |
Dell WS610 |
188948 |
262413 |
320 |
97123 |
143429 |
16 |
| ibm |
RS6000/397 |
92486 |
167747 |
301 |
40535 |
100085 |
23 |
| ibm |
PWR 3 43P-260 |
83597 |
120168 |
301 |
43851 |
67897 |
16 |
| hp |
N4000 |
49164 |
52302 |
301 |
28916 |
24503 |
15 |
| digital |
ES40 EV6 500 |
68688 |
72917 |
318 |
33899 |
43458 |
15 |
| cray |
T94_opt |
16457 |
11685 |
187 |
11252 |
9841 |
16 |
| cray |
T94 |
14079 |
22391 |
328 |
10081 |
12674 |
15 |
| cray |
J90se_opt |
111027 |
47907 |
158 |
59480 |
36530 |
15 |
| cray |
J90se |
89692 |
92252 |
375 |
54722 |
55739 |
15 |
- The CPU time is greater than Elapsed for XXDMD on the N4000 even
though only 1 CPU was requested by MSC/NASTRAN. The reason that this
occurs is because the operating system used multiple CPUs for I/O even
though MSC/NASTRAN used only 1 CPU.
- XXDMD on the HP/N4000 was run with a patch for HPUX 11.0 MSC/NASTRAN
V70.5 executables for performance reasons.
|
