20220731, 21:28  #672 
Dec 2011
After milion nines:)
627_{16} Posts 
e:\MTSIEVE\MTSIEVE233>kbbsieve P 100000 W1 k 77 b 2 B 200000
kbbsieve v1.1, a program to find factors of k*b^b+c numbers for fixed k and c = +1/1 199998 even terms removed Sieve started: 3 < p < 1e5 with 199998 terms (k = 77, 2 <= b <= 200000) (expecting 180913 factors) CTRLC accepted. Threads will stop after sieving to 100000 Decreasing worksize to 5024 since each chunk needs more than 5 seconds to test Sieve completed at p=100003. CPU time: 10.28 sec. (0.00 sieving) (1.11 cores) Fatal Error: Something is wrong. Counted terms (22861) != expected terms (22859) 
20220801, 03:53  #673  
"Mark"
Apr 2003
Between here and the
1101001010000_{2} Posts 
Quote:


20220801, 15:41  #674 
"Erling B."
Dec 2005
103 Posts 
Maybe this helps pepi37. I was running gfndsievecl. I found that if g is to low then the CPU will not load any work to GPU. The CPU will do the work without distributing work to GPU. (explains high CPU time and low or no GPU time) when I skip g command no work goes to GPU because default limit is to low. Not even g 100 moves the card to workload. When putting g 200 I start to see the CPU buffering up the extra work to GPU card. From 5% workload for g 200 to 8% for g 300. So maybe default g value should be somehow higher. I used S 10000

20220801, 18:09  #675  
"Mark"
Apr 2003
Between here and the
15120_{8} Posts 
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20220801, 21:10  #676  
Dec 2011
After milion nines:)
3^{2}·5^{2}·7 Posts 
Quote:
Thanks! 

20220814, 13:07  #677 
"Erling B."
Dec 2005
1100111_{2} Posts 
I am trying xyyxsievecl. I have some questions.
OpenCL Error: Out of resources in call to clEnqueueReadBuffer argument: factorCount Is this error a driver old hardware problem or wrong parameter setting ? I am not sure where to look. I did clean driver install. On command prompt I see "xyyxsieve v1.8" on screen when calling xyyxsievecl version (both versions under same folder) switch s b seems not to be working for me here. When calling xyyxsievecl the program works fine but only for cpu work. W1 and W2 are fine but not G or different M or any other parameters when I try to effect GPU. Most of the time I get blank screen for 2 second as the card try to start working and then this OpenCL error. When it is stable there is no workrate at GPU when running. I have Geforce GTX 760 card. The same PC works fine trying gfndsievecl for the gpu part. Last fiddled with by japelprime on 20220814 at 13:11 
20220815, 00:13  #678 
"Mark"
Apr 2003
Between here and the
1101001010000_{2} Posts 
This implies you do not have enough GPU memory. I believe there is a S option. Try reducing the number of steps per GPU execution

20220816, 20:46  #679 
"Erling B."
Dec 2005
103 Posts 

20220818, 19:11  #680 
Jun 2012
Boulder, CO
110100110_{2} Posts 
Another crash. This is with the latest SVN code.
Code:
$ ./srsieve2 W 36 P 1e12 n 3e6 N 10e6 o ferm81_3M_10M.txt s "81*2^n+1" srsieve2 v1.6.3, a program to find factors of k*b^n+c numbers for fixed b and variable k and n (b2) Removed 1750000 algebraic factors for 81*2^n+1 of the form (3^2)*2^(n/2)3*2^((n+2)/4))+1 when n%4=2 Sieving with generic logic for p >= 3 Sieve started: 3 < p < 1e12 with 5250001 terms (3000000 < n < 10000000, k*2^n+1) (expecting 5041260 factors) Sieving with single sequence c=1 logic for p >= 257 BASE_MULTIPLE = 30, POWER_RESIDUE_LCM = 720, LIMIT_BASE = 720 Split 1 base 2 sequence into 384 base 2^720 sequences. Legendre summary: Approximately 2 B needed for Legendre tables 1 total sequences 1 are eligible for Legendre tables 0 are not eligible for Legendre tables 1 have Legendre tables in memory 0 cannot have Legendre tables in memory 0 have Legendre tables loaded from files 1 required building of the Legendre tables 518400 bytes used for congruent q and ladder indices 295200 bytes used for congruent qs and ladders Segmentation fault 
20220818, 20:15  #681  
"Mark"
Apr 2003
Between here and the
2^{4}·421 Posts 
Quote:


20220818, 20:57  #682 
Jun 2012
Boulder, CO
2·211 Posts 
