llrCUDA Version 3.8.7 is released!

[Honza]

I've managed to install WSL / Ubuntu.


Running test.
./sllrCUDA -d -q"6171*2^1658919+1"

After a minut of so, it printed actual start of a test.
Starting Proth prime test of 6171*2^1658919+1
Using complex irrational base DWT, FFT length = 229376, a = 7
Iteration: 1 / 1658930 [0.00%].

After another minute of so, it finaly got going with ETA about 10 minutes (CPU AMD 5950X is finished in ~3 minutes)

About halfway finished, it catched error.

Starting Proth prime test of 6171*2^1658919+1
Using complex irrational base DWT, FFT length = 229376, a = 7
Gerbicz error check passed at iteration 1000013.

[Honza]

I did another test, same error after couple of minutes

(ETA on RTX 2080 about 35 minutes, test finished on AMD 3950X in 12 minutes)

root@Honza:/mnt/d/_ubuntu/llrcuda387slinux64# ./sllrCUDA -d -q"2511*2^3349104+1"
Starting Proth prime test of 2511*2^3349104+1
Using complex irrational base DWT, FFT length = 458752, a = 5
Gerbicz error check passed at iteration 1000012.

[slandrum]

Originally Posted by Honza

I did another test, same error after couple of minutes

(ETA on RTX 2080 about 35 minutes, test finished on AMD 3950X in 12 minutes)

root@Honza:/mnt/d/_ubuntu/llrcuda387slinux64# ./sllrCUDA -d -q"2511*2^3349104+1"
Starting Proth prime test of 2511*2^3349104+1
Using complex irrational base DWT, FFT length = 458752, a = 5
Gerbicz error check passed at iteration 1000012.

I don't see any error. The last line said that it ran a test looking for errors, and the test passed - meaning it didn't find any errors. If it had detected an error, the test would have failed.

[Honza]

Originally Posted by slandrum

I don't see any error. The last line said that it ran a test looking for errors, and the test passed - meaning it didn't find any errors. If it had detected an error, the test would have failed.

My bad, wrong interpretation.
What got me confused again is that it stays there for a while before printing anything else.
Those pauses between stages are unusuall comparing to CPU LLR and in contrast with GPU version exepected to be faster or at least not having (longer) pauses.

./sllrcuda -d -q"1095*2^330702+1"
Starting Proth prime test of 1095*2^330702+1
Using complex irrational base DWT, FFT length = 40960, a = 13
1095*2^330702+1 is prime! (99555 decimal digits) Time : 177.281 sec.

OK, Linux version can run on WSL.
I don't have a way to test it's performance to native Win binary.
It's considerably slower and less emergy efficient comparing to CPU.
(haven't tryed giant candidates like SoB)