Problem Sizes and Parameters in NAS Parallel Benchmarks

The following two tables contain a summary of problem sizes and parameters for classes defined in NPB 3.3 and NPB 3.3-MZ.

Table 1: Problem sizes and parameters for each of the classes defined in NPB 3.3.  Empty cells in the table indicate undefined problem sizes.
Benchmark Parameter Class S Class W Class A Class B Class C Class D Class E
CG no. of rows 1400 7000 14000 75000 150000 1500000 9000000
no. of nonzeros 7 8 11 13 15 21 26
no. of iterations 15 15 15 75 75 100 100
eigenvalue shift 10 12 20 60 110 500 1500
EP no. of random-number pairs 224 225 228 230 232 236 240
FT grid size 64 x 64 x 64 128 x 128 x 32 256 x 256 x 128 512 x 256 x 256 512 x 512 x 512 2048 x 1024 x 1024 4096 x 2048 x 2048
no. of iterations 6 6 6 20 20 25 25
IS no. of keys 216 220 223 225 227 231
key max. value 211 216 219 221 223 227
MG grid size 32 x 32 x 32 128 x 128 x 128 256 x 256 x 256 256 x 256 x 256 512 x 512 x 512 1024 x 1024 x 1024 2048 x 2048 x 2048
no. of iterations 4 4 4 20 20 50 50
BT grid size 12 x 12 x 12 24 x 24 x 24 64 x 64 x 64 102 x 102 x 102 162 x 162 x 162 408 x 408 x 408 1020 x 1020 x 1020
no. of iterations 60 200 200 200 200 250 250
time step 0.01 0.0008 0.0008 0.0003 0.0001 0.00002 0.000004
(BT-IO) write interval 5 5 5 5 5 5 5
Gbytes written 0.0008 0.022 0.42 1.7 6.8 135.8 2122.4
LU grid size 12 x 12 x 12 33 x 33 x 33 64 x 64 x 64 102 x 102 x 102 162 x 162 x 162 408 x 408 x 408 1020 x 1020 x 1020
no. of iterations 50 300 250 250 250 300 300
time step 0.5 0.0015 2.0 2.0 2.0 1.0 0.5
SP grid size 12 x 12 x 12 36 x 36 x 36 64 x 64 x 64 102 x 102 x 102 162 x 162 x 162 408 x 408 x 408 1020 x 1020 x 1020
no. of iterations 100 400 400 400 400 500 500
time step 0.015 0.0015 0.0015 0.001 0.00067 0.0003 0.0001
UA no. of elements 250 700 2400 8800 33500 515000
no. of mortar points 11600 26700 92700 334600 1262100 19500000
levels of refinements 4 5 6 7 8 10
no. of iterations 50 100 200 200 200 250
heat source radius 0.04 0.06 0.076 0.076 0.067 0.046
DC input tuples 103 105 106 107
no. of dimensions 5 10 15 20
Table 2: Problem sizes and parameters for each of the classes defined in NPB 3.3-MZ.
Problem Class BT-MZ LU-MZ SP-MZ Aggregated Grid Size Memory Requirement (approx.)
  no. zones no. iters no. zones no. iters no. zones no. iters    
Class S 2 x 2 60 4 x 4 50 2 x 2 100 24 x 24 x 6 1 MB
Class W 4 x 4 200 4 x 4 300 4 x 4 400 64 x 64 x 8 6 MB
Class A 4 x 4 200 4 x 4 250 4 x 4 400 128 x 128 x 16 50 MB
Class B 8 x 8 200 4 x 4 250 8 x 8 400 304 x 208 x 17 200 MB
Class C 16 x 16 200 4 x 4 250 16 x 16 400 480 x 320 x 28 0.8 GB
Class D 32 x 32 250 4 x 4 300 32 x 32 500 1632 x 1216 x 34 12.8 GB
Class E 64 x 64 250 4 x 4 300 64 x 64 500 4224 x 3456 x 92 250 GB
Class F 128 x 128 250 4 x 4 300 128 x 128 500 12032 x 8960 x 250 5.0 TB

Open Source Software

Open Source for NASA means enhanced software quality through community review and development, enhanced collaboration through sharing of NASA-originated software, and more efficient and effective dissemination of research products (such as software) to the public.

As part of the effort to create an Open Source option, NASA formed a cross-agency legal team - this team created the NASA Open Source Agreement (NOSA) for Open Source releases.

NOSA is endorsed by the Open Source Initiative, and is the chief overseer of NASA's Open Source definitions and usage agreements.

Open Source Resources

The following is a list of relevant resources on NASA Open Source:

Developing An Open Source Option for NASA Software (PDF version 209KB)
This NAS technical report provides background material on why an Open Source option is appropriate for NASA.

NASA Space Act (NASA Charter)
The NASA charter: the agency shall "provide for the widest practicable and appropriate dissemination of information concerning its activities and the results thereof."

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