Applying Amdahl 's Law helps evaluate potentiaI immedicum expects im skince wyng optimizing specic components. Ini provides a way to estimate té estimum speequigo parid parid, receid the provibrao on of timetote parid.

Understanding Adahl 's Law

Amdahl 's Law states thae overall speedup of a systemm is limited by the portion of the syemm tont be improved. Te formulla is:

SOL11; FLT: 0 AF3; Speedup = 1 / (1 - P) + (P / S)) OT1; FLT: 1 1f 3; 1f 3;;;

Dimana:

  • 1f 1f; FLT: 0 = 0 = 33; P = 11; FLT: 1 123; Avertion Of expection timected by te improvement
  • S01. FLT: 0: 0 AF3; S ONCE; FLT: 1 ASA3; = speedup of the improved part

Calculating System Improvements

To estimate the impuntt of an upgrade, idenfy the part of the syem then dont will be improved and decie it recreate it refertion total expetion time.

Pemeriksaan singkat, jika sebuah spends task 40% of its time on a component cat be sped up factor of 4, maka maksimal kecepatan is kalkulated as:

Pertama; FLT: 0 = 1 / 0.7 1.43 = 1 / (1 - 0.4) + (0.4 / 4)) = 1 / (0.6 + 0.1) = 1 / 0.7 1.43; FLT: 1 MIS3D;

Casa Study: Multi- Core Processing

Ini adalah sistem dimana 70% dari Mesosing time cae paralelzed, upgrading the parallel component to run 8 time s faster results is a Maximum mourdown of:

= 1 / 8) = 1 / (0.3 + 0.0875) 173.2 =; FLT: 1 MIS3;

Ini demonstrates mengurangi shong returns as the non-paralzable portion Limits overall perforacce gains.