Contents - Raspberry PI Community Projects

Machine precision: 15 digits.
Array size 200 X 200.
Average rolled and unrolled performance:
Reps Time(s) DGEFA DGESL OVERHEAD KFLOPS
8 0.51 90.20% 3.92% 5.88% 22888.889
16 1.02 89.22% 4.90% 5.88% 22888.889
32 2.05 90.24% 3.41% 6.34% 22888.889
64 4.08 91.42% 2.94% 5.64% 22829.437
128 8.16 91.54% 2.94% 5.51% 22799.827
256 16.31 91.35% 2.76% 5.89% 22903.800
Full hardware floating point on Raspbian (-mfloat-abi=hard -mfpu=vfp) and
arm_freq=700
Memory required: 315K.
LINPACK benchmark, Double precision.
Machine precision: 15 digits.
Array size 200 X 200.
Average rolled and unrolled performance:
Reps Time(s) DGEFA DGESL OVERHEAD KFLOPS
16 0.58 89.66% 3.45% 6.90% 40691.358
32 1.17 87.18% 4.27% 8.55% 41071.651
64 2.32 88.36% 3.02% 8.62% 41459.119
128 4.67 88.22% 3.43% 8.35% 41071.651
256 9.33 88.85% 3.32% 7.82% 40880.620
512 18.63 89.00% 2.95% 8.05% 41047.675
Full hardware floating point on Raspbian (-mfloat-abi=hard -mfpu=vfp) and
arm_freq=1000 and core_freq=500
Memory required: 315K.
LINPACK benchmark, Double precision.
Machine precision: 15 digits.
Array size 200 X 200.
Average rolled and unrolled performance:
Reps Time(s) DGEFA DGESL OVERHEAD KFLOPS
32 0.79 89.87% 0.00% 10.13% 61896.714
64 1.58 89.24% 1.27% 9.49% 61463.869
128 3.16 90.19% 1.90% 7.91% 60407.789
256 6.32 88.13% 3.80% 8.07% 60511.761
512 12.65 87.83% 3.56% 8.62% 60825.836
Full hardware floating point on Gentoo with more compiler optimizations (gcc-4.6.3 -
Ofast -fno-fast-math), default clocks
Memory required: 315K.
LINPACK benchmark, Double precision.
Machine precision: 15 digits.
Array size 200 X 200.
Average rolled and unrolled performance: