home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: comp.benchmarks
- Path: sparky!uunet!think.com!ames!data.nas.nasa.gov!amelia.nas.nasa.gov!eugene
- From: eugene@amelia.nas.nasa.gov (Eugene N. Miya)
- Subject: [l/m 3/23/92] Linpack (9/28) c.be FAQ
- Keywords: who, what, where, when, why, how
- Sender: news@nas.nasa.gov (News Administrator)
- Organization: NAS Program, NASA Ames Research Center, Moffett Field, CA
- Date: Sat, 9 Jan 93 12:25:10 GMT
- Message-ID: <1993Jan9.122510.3066@nas.nasa.gov>
- Reply-To: eugene@amelia.nas.nasa.gov (Eugene N. Miya)
- Lines: 75
-
- 9 Linpack <This panel>
- 10
- 11 NIST source and .orgs
- 12 Measurement Environments
- 13 SLALOM
- 14
- 15 12 Ways to Fool the Masses with Benchmarks
- 16 SPEC
- 17 Benchmark invalidation methods
- 18
- 19 WPI Benchmark
- 20 Equivalence
- 21 TPC
- 22
- 23
- 24
- 25 Ridiculously short benchmarks
- 26 Other miscellaneous benchmarks
- 27
- 28 References
- 1 Introduction to FAQ chain and netiquette
- 2 Benchmarking Concepts
- 3 PERFECT
- 4
- 5 Performance Metrics
- 6 Temporary scaffold of New FAQ material
- 7 Music to benchmark by
- 8 Benchmark types
-
- The LINPACK benchmark is a very simple LU decomposition of a dense linear
- system (Gaussian elimination) by Jack Dongarra the developer of the
- LINPACK library and the netlib numerical software server.
-
- Ref: Dongarra's article in CACM on Netlib.
- And ACM SIGARCH Computer Architecture News and SIGNUM Newsletter.
-
- Advantages:
- Simple fairly portable FORTRAN. One of the shorter benchamrks.
- It is small enough to be carried on disk or in Jack's laptop without
- consuming too much porting time.
- A good attempt at experiment control, has stringent execution requirements.
-
- Dongarra also records the compiler options used to invoke the Fortran
- compilers. Record keeping is good. Reports are quickly available
- electronically and published with some frequency in Supercomputing Review.
-
- Disadvantages:
- Diminishing parallelism during the decomposition (as in all Gaussian
- elimination). It is perhaps too simple. Execution time is on the shorter
- side. It cannot characterize less numeric applications.
-
- NETLIB benchmark index (Linpack benchmark)
- netlib@ornl.gov
- send index from benchmark
- includes linpack (100x100,300x300,1000x1000).
-
- What is interesting about these sizes is that they are not
- the powers of 2 which characterize many benchmarks. Powers of 2
- can bias in favor of some architectures and bias against other
- architectures.
-
- ^ A
- s / \ r
- m / \ c
- h / \ h
- t / \ i
- i / \ t
- r / \ e
- o / \ c
- g / \ t
- l / \ u
- A / \ r
- <_____________________> e
- Language
-
-