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General discussion • Re: A Pi Pie Chart

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The Graviton 4 is now in general release. While waiting for funding and approval to spin up a 4-core virtual machine, I thought I'd test the Pentium J5040 in the soft router that Fido just installed for the dog house.

I suggested an N100, but since there was 8GB of DDR4 left over from a laptop upgrade the older unit was procured. The dog developer has been acting uncharacteristically frugal due to the current world economy,

The results were

Code:

Fido's Lorenz 96 Pi Race V19  0: 🐕                                    2572.2  1: 🐩                                    2571.24  2:🦛                                     2572.92  3:                                    🦒 2505.08Finished!  Average Mflops per core: 2555.36       Standard deviation: 29.0347  Fast to slow core ratio: 1.02708    Raspberry Pi 4B ratio: 8.80719             Total Mflops: 10221.4
as well as

Code:

$ ./pichart-openmp -t J5040pichart -- Raspberry Pi Performance OPENMP version 40Prime Sieve          P=14630843 Workers=8 Sec=0.389069 Mops=2401.44Merge Sort           N=16777216 Workers=8 Sec=0.550925 Mops=730.867Fourier Transform    N=4194304 Workers=8 Sec=0.940832 Mflops=490.389Lorenz 96            N=32768 K=16384 Workers=8 Sec=0.255438 Mflops=12610.6The J5040 has Raspberry Pi ratio=50.967Making pie charts...done.
The Fourier Transform seems a bit slow--possibly due to the 2400 MT/s RAM repurposed from the laptop. On the other hand the balance between the four efficiency cores was pretty even. After running the Pi Race 7 times, each of the animals had won at least once.

Statistics: Posted by ejolson — Sun Jul 14, 2024 10:58 pm



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