book.05 recommendation systems performance comparison with V2

[dzhwinter]

• CPU version loss convergence comparison (Book05 recommendation systems: CPU version loss convergence comparison. #7167)
• GPU version loss convergence comparison (Book05 recommendation systems: GPU version loss convergence comparison. #7168)
• CPU version speed comparison and enhancement (Book05 recommendation systems: CPU version speed comparison and enhancement. #7169)
• GPU version speed comparison and enhancement (Book05 recommendation systems: GPU version speed comparison and enhancement. #7170)

[typhoonzero]

Ref: #6601

[typhoonzero]

CPU

• Both v2 and fluid, cost shakes around 1.2 ~ 5.0, that is because of the model definition, we assume the cost is very near.

pass	cost fluid	cost v2
0	6.229977	4.427635
1	4.487157	4.382707
2	4.222117	4.158451
3	4.245110	4.130317
4	4.100204	4.144413

Time CPU:

• fluid 1 pass: 181.303029s
• v2 1 pass: 246.980717s

Time GPU:

• fluid 1 pass: 193.872574s GPU utility 35%~43%
• v2 1 pass: 57.742999s GPU utility 6% ~ 16%

[dzhwinter]

The benchmark job has been done.