Primecoin GPU miner for nVidia - Now free for 750ti

Marketplace Primecoin
41

I’ve never seen anything like this. Maybe run it in GDB so we can at least get a location of the crash?

42

@jonpry

Help please, I received the following error below while attempting to run the program on Fedora 18:
OpenCL error at platform_ids: -1001

Am I missing a library for Nvidia’s OpenCL runtime?

43

I’m ready to release open source GPU miner for beta testing, but can’t thread… restriction for newbies=) What I must do for thread start access rights getting ?

44

@SuperComputer

I have not tried on Fedora. I am using the Nvidia binary drivers from the NV website instead of debian packages. On debian if you try to use the packaged drivers there is a whole myriad of stuff that must be installed. In particular the opencl-icd’s. If fedora has some version of clinfo you can check to make sure your GPU is being detected as an available processing device. It may also freak out if there is a non GPU opencl device, but I can fix that.

45

[quote=“jonpry, post:44, topic:2147”]@SuperComputer

I have not tried on Fedora. I am using the Nvidia binary drivers from the NV website instead of debian packages. On debian if you try to use the packaged drivers there is a whole myriad of stuff that must be installed. In particular the opencl-icd’s. If fedora has some version of clinfo you can check to make sure your GPU is being detected as an available processing device. It may also freak out if there is a non GPU opencl device, but I can fix that.[/quote]

Awesome, thank you. It was a bad library path in the following file:
/etc/OpenCL/vendors/nvidia.icd

46

@eXtremal.ik7

I found your code at https://github.com/eXtremal-ik7/xpmminer/tree/master/src/OpenCL some of it is pretty good. What are you doing in FermatTest384 with the precomputed values? This reduces number of times through the loop somehow?

47

GTX 780 Ti Classified @ 1.084 GHz (Kepler)

Val/h: 3.34795260 - PPS: 51 - SPS: 287.59017944 - ACC: 0 - Primorial: 41 Chain/Hr: 6: 133.00 7: 12.84 8: 1.83

New Block: 492397 - Diff: 10.68791342 / 7.00000000
Valid/Total shares: [ 15 / 16 ] - Max diff: 8.16436386
6ch/h: 129.40433351 - 145 [ 46 / 45 / 54 ]
7ch/h: 12.49421151 - 14 [ 5 / 6 / 3 ]
8ch/h: 1.78488736 - 2 [ 0 / 2 / 0 ]
Share Value submitted - Last Block/Total: 0.00000000 / 3.64999938
Current Primorial Value: 41

Not looking too good for the fastest Kepler card.

48

Only using 5 SMX though.

49

GTX 750 Ti @ 1.254 GHz (Maxwell)

Val/h: 2.70819187 - PPS: 89 - SPS: 495.82644653 - ACC: 0 - Primorial: 41 Chain/Hr: 6: 238.32 7: 21.67 8: 1.08

New Block: 492494 - Diff: 10.68797654 / 7.00000000
Valid/Total shares: [ 21 / 21 ] - Max diff: 8.42951488
6ch/h: 240.45310160 - 226 [ 79 / 75 / 72 ]
7ch/h: 21.27903554 - 20 [ 9 / 8 / 3 ]
8ch/h: 1.06395178 - 1 [ 1 / 0 / 0 ]
Share Value submitted - Last Block/Total: 0.00000000 / 2.49999952
Current Primorial Value: 41

Looking good for little Maxwell

50

Yes, it reduces total number of times (16 + 384/4 = 112) and removes threads divergence, speedup about 50% compare to /standard/ version.

51

Yes, if you optimize your code for big Kelper, the Primecoin mining throughput will be at least 4x that of little Maxwell’s.

52

Yes, it reduces total number of times (16 + 384/4 = 112) and removes threads divergence, speedup about 50% compare to /standard/ version.[/quote]

Thanks! eXtremal.ik7!!

53

any updates to nvidia miner?

54

./jhprimeminer1.02 -o http://ypool.net:10034 …

SM#:2 Thread: 163 Origin: ba267183cf2224726e8f8bdaebbd1cdf1a58e7f11b0013511993f95e41cad052822645bb5e052a600
Error: -9999
Type: 2
Name: fermat
OpenCL error at clQueue_wait: -9999

SM#:1 Thread: 407 Origin: 6f07ab39614b78f0e7c7c0f0a705132da5558ff8c186cbe5cd8550fa0a567a07445c7a420bef09e000
Error: -9999
Type: 2
Name: fermat
OpenCL error at clQueue_wait: -9999

55

@Supercomputer

I have seen this bug occasionally. Does restarting the miner fix the problem?

56

Yes, it resolves the issue after restarting the miner, but it happens frequently and usually within a few minutes into mining. I have not yet exceeded 90 minutes of running the miner without it crashing.

57

I run the miner from within a script that restarts it. So mostly I just try to catch errors and exit. This is a bigger problem if the miner is not exiting. I figure if it restarts 1 time per hour you losing about 1 second of mining capacity which just doesn’t seem like a problem to me. I can try increasing some things. Fermat goes nuts if too many primes are found in the sieve.

58

I will use your provided script and give it a try.

59

if this is freq enuff, can make use of cronjob to kill and restart the script every 1 hour.

However, any plans to fix this bug or any new updates ?

60

any ways to overclock 750ti?