SSE 128bit randomgenerator(s)

[daydreamer]

making 128bit randomgenerator(s)

[daydreamer]

I decided to try alternative fast gp reg unrolled 4 times
using mul instead of pmuludq,is there any way to use edx result for randomize it more?

[daydreamer]

I have 128bit SSE2 simple randomgenerator in macro

unrolled it 8 times in loop few million times
and checks for primes and add together primes
could you check timings please?

[mineiro]

Code Select Expand


$ wine cmd.exe
Microsoft Windows 6.1.7601
Z:\home\mineiro\Documentos>1th.exe
1# program
the RND's
sum of random primes :583603954
27
Ms : 315
Ms composites :0
Press any key to continue ...

Z:\home\mineiro\Documentos>1th.exe
1# program
the RND's
sum of random primes :583603954
27
Ms : 318
Ms composites :0
Press any key to continue ..

Z:\home\mineiro\Documentos>1th.exe
1# program
the RND's
sum of random primes :583603954
27
Ms : 338
Ms composites :0
Press any key to continue ..


[HSE]

Well...not so random:

Code Select Expand

1# program
the RND's
sum of random primes :583603954
27
Ms : 468
Ms composites :0
Press any key to continue ...

[daydreamer]

Code Select Expand

1# program
the RND's
sum of random primes :583603954
27
Ms : 391
Ms composites :0
Press any key to continue ...
I can also use random seed,but for timings it will become random add together or not,could randomize timings some without same seeds

with before also generating primes,it took several seconds

[daydreamer]

probably can go faster

[HSE]

Code Select Expand

1# program
the RND's
sum of random primes :583610108
27
Ms : 577
Ms composites :-2029479
Press any key to continue ...

Ms : 592
Ms composites :-2081178

Ms : 562
Ms composites :-2116059

Ms : 561
Ms composites :-2141363

Ms : 577
Ms composites :-2176416

[daydreamer]

its really fast now

Code Select Expand

1# program
the RND's
sum of random primes :583610108
27
Ms : 156
Ms composites :-1527477187
Press any key to continue ...
but maybe slower on older cpus
changed align 64 above loops and removed two .IFs
started with over 2000+ms,when it took most time pre-generate primes

[LiaoMi]

Hi daydreamer,

1# program
the RND's
sum of random primes :583610108
27
Ms : 125
Ms composites :-71800812
Press any key to continue ...

1# program
the RND's
sum of random primes :583610108
27
Ms : 125
Ms composites :-71843093
Press any key to continue ...   

1# program
the RND's
sum of random primes :583610108
27
Ms : 140
Ms composites :-71870625
Press any key to continue ... 

my timing results are always in two variations 140 - 125, is this normal? What algorithm was taken as a basis? Is it possible to check the randomness of the distribution of numbers?

[daydreamer]

LiaoMi
The First posted earlier was inspired by Hutch 64bit random pad ,somewhere he had some program that you could test random quality
I had both rdtsc and get milliseconds to randomizer it

Its the usual windows milliseconds clock from startup I use
The later Unrolled 128bit generator Is based on fast simple rnd generator for texture generating

[hutch--]

The app you are looking for is called ENT written by John Walker. Its freeware.

[daydreamer]

The app you are looking for is called ENT written by John Walker. Its freeware.

Thanks hutch 
Is there a way to combine several different rnd generators for quality, instead of quantity?

wish to add one test to rnd generators: randomness/speed ratio

[daydreamer]

Seem solution to better randomness is right there,looking at low compression ratio for. Primes.inc