Compute Power XEON E5-2698 V3

[BHZ-GTR]

Hi Friends

I have a question َAbout Compute Power Xeon E5-2698 V3 ?

The computational power of a processor (Gflops And TFlops)

Please explain to me how can I calculate the computational power of a processor.

 

[Burpo]

http://www.cpubenchmark.net/cpu.php?cpu=Intel+Xeon+E5-2698+v3+@+2.30GHz

Download Passmark..

http://www.passmark.com/download/64bitsoftware.htm

 

[ShintaiDK]

Passmark is a terrible way of measuring that.

For gflops you can use linpack. But it depends if you want SP, DP, HP etc numbers.

 

[Burpo]

It's good for a quick comparison of other cpu's.

Please explain to me how can I calculate the computational power of a processor.

 

[ShintaiDK]

It's good for a quick comparison of other cpu's.

But doesnt tell anything about the potential with proper usage of new instructions. At best it can be used for legacy compare.

 

[Space69]

I have a question About Compute Power Xeon E5-2698 V3 ?

The computational power of a processor (Gflops And TFlops)

Please explain to me how can I calculate the computational power of a processor.

Theoretical sp (fp32) :

frequency * 8 (number of fp32 in AVX 2.0) * 2 (FMA instruction = fadd + fmul) * 2 (number of FMA units) * cores
2.3 * 8 * 2 * 2 * 16 = 1177Gflops

Theoretical dp (fp64) :

frequency * 4 (number of fp64 in AVX 2.0) * 2 (FMA instruction = fadd + fmul) * 2 (number of FMA units) * cores

The above is without the 5 cycles latency of the FMA units which obviously will have a large impact on the performance.

This is not achievable in reality, since Xeon's will lower the frequency when using AVX and not many algorithms contains 100% of unrelated FMA instructions.

 

[BHZ-GTR]

Thank You Very Much Friends.