Comment Comment by bluescarni Go and measure it yourself, if you have one :)https://github.com/Mysticial/Flops/You can also get a theoretical computation of the Flops, which matches nicely with the experimental measurement. You have to take into account:- the clock frequency (~3.9 GHz on multithreaded workloads on my machine)- the number of cores (16)- the reciprocal throughput of the FMA instruction (~.5, that is, 2 instructions per clock cycle)- the number of flops per instruction (2 for the FMA instruction, that is, 1 multiply + 1 add)- the SIMD vector width (4 for double, 8 for float).Putting it together:3.9e9 * 16 * 2 * 2 * 4 = 998.4 GFlops (double)3.9e9 * 16 * 2 * 2 * 8 = 1996.8 GFlops (single)The measured values on my machine are a bit different, but close (1070 and 2151 respectively).References:https://www.agner.org/optimize/instruction_tables.pdfhttps://www.agner.org/forum/viewtopic.php?t=56https://gadgetversus.com/processor/amd-ryzen-9-5950x-gflops-... parent bluescarni 4 years ago
https://github.com/Mysticial/Flops/
You can also get a theoretical computation of the Flops, which matches nicely with the experimental measurement. You have to take into account:
- the clock frequency (~3.9 GHz on multithreaded workloads on my machine)
- the number of cores (16)
- the reciprocal throughput of the FMA instruction (~.5, that is, 2 instructions per clock cycle)
- the number of flops per instruction (2 for the FMA instruction, that is, 1 multiply + 1 add)
- the SIMD vector width (4 for double, 8 for float).
Putting it together:
3.9e9 * 16 * 2 * 2 * 4 = 998.4 GFlops (double)
3.9e9 * 16 * 2 * 2 * 8 = 1996.8 GFlops (single)
The measured values on my machine are a bit different, but close (1070 and 2151 respectively).
References:
https://www.agner.org/optimize/instruction_tables.pdf
https://www.agner.org/forum/viewtopic.php?t=56
https://gadgetversus.com/processor/amd-ryzen-9-5950x-gflops-...