BLASbench Home Page

Description:

Features:

The usage is as follows:

Usage: blasbench [-vatcs -x # -m # -e # -i #]
         -v AXPY dot product benchmark
         -a GEMV matrix-vector multiply benchmark
         -t GEMM matrix-matrix multiply benchmark
         -s Use single precision floating point data
         -c Use constant number of iterations
         -o Report Mflops/sec instead of MB/sec
         -e Repeat count per problem size
         -l Hold LDA and loop over sizes of square submatrices
         -i Maximum iteration count
         -x Number of measurements between powers of 2.
         -m Specify the log2(maximum problem size) in bytes
         -d Report/use dimension statistics instead of bytes

Default datatype   : double, 8 bytes
Default datatype   : float, 4 bytes
Defaults if to tty : -vat -x1 -m24 -e2 -i100000
Defaults if to file: -t   -x1 -m24 -e1 -i100000

The output looks like this:

                        float AXPY Cache Test

CSize   PSize   % Fit   Dim     Iters           Nansec  % Chng          MB/sec
-----   -----   -----   ----    ------          ------  ------          -------
256     256     100.00  32      100000           4.22   100.00          226.12
256     256     100.00  32      100000           4.19   99.40           227.49
384     384     100.00  48      66666            4.14   98.82           230.20
384     384     100.00  48      66666            4.12   99.36           231.68
512     512     100.00  64      49999            4.10   99.50           232.85
512     512     100.00  64      49999            4.09   99.92           233.04
768     768     100.00  96      33332            4.06   99.31           234.65
768     768     100.00  96      33332            4.09   100.64          233.17
1024    1024    100.00  128     24999            4.12   100.83          231.25
1024    1024    100.00  128     24999            4.06   98.37           235.09

Bug Reports

Bugs should be submitted to the LLCbench Mailing List.

Author

LLCbench was written by Philip J. Mucci of the Innovative Computing Laboratory.

Copyright

This software is COMPLETELY OPEN SOURCE. If you incorporate any portion of this software, I would appreciate an acknowledgement in the appropriate places. Should you find LLCbench useful, please considering making a contribution in the form of hardware, software or plain old cash.
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