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===========================================================
This is recompile V5.10 of:
STREAM: Sustainable Memory Bandwidth in High Performance Computers
https://www.cs.virginia.edu/stream/
===========================================================
In package there are two versions, both compilled with -O3:
stream - standartd powerpc code
stream_spe - code for SPE embedded FPU ( A1222+ )
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Both stream and stream_spe are compilled from C source with unmodified ruleset
and should be compared with Standart results table:
The "standard" set of results presents the results of the C or Fortran versions
of the STREAM benchmark running with 64-bit data types on production hardware.
SPE version uses non-modified algorithm, but utilize embedded FPU instead of
standard powerpc FPU ( compilled with "-mcpu=8540 -mspe -mabi=spe
-mfloat-gprs=double". Only change in stream_spe.c source is printing of results
stored in embedded FPU via standard printf().
This benchmark is originally designed for multi-CPU, vectorized, 64-bit
floating-point data streams. With this benchmark we can compare how our
single-CPU, 32-bit machines without vectorization are able to manage such data.
Stream works on top of arrays with 10 million double-precision floating-pont
values.
Copy: a(i) = b(i)
Scale: a(i) = q * b(i)
Add: a(i) = b(i) + c(i)
Triad: a(i) = bÍi) + q*c(i)
Results of stream v5.10 cannot be compared with results from previous version
v5.7.
April 25th 2024
Sailor
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