Anything further that can be done for VLIW hardware? 50Kh/s is a tremendous step up and almost puts neoscrypt on a par efficiency wise with Diamond and probably better than the best scrypt coins, but 50 Kh/s isn’t good enough when people with 1 generation newer hardware are hitting 200+.

I’d upgrade my cards if I could, but I can’t until probably February.

Wolf0? Love your desktop images btw. There was a rumor you might be working on a VLIW kernel. Any progress?

What if we have a mult-card setup with both GCN and pre-GCN cards?

insanid, at the moment, optimize for the GCN card and whatever you get with the pre-GCN card is gravy. Or mine something else with the pre-GCN cards. DMD is good to mine. You won’t get a lot of coins, but at least it’ll cover the electric bill. At the moment, mining neoscrypt with pre-GCN cards is a losing prospect. Per card, per day, you’re looking at maybe 1 FTC, 200 PXC, or maybe 800 UFO. You’ll be lucky to hit 10,000 satoshi in value (per card). Mine Diamond. You’ll only get about 1 a day, but it’s worth 40,000+.

I’m not trying to bash neoscrypt, and I’m certainly not trying to bash the developers who have made some really positive strides over the last week or so. I’m a long time miner of PXC, and I’m really hoping to continue mining it, and now FTC and UFO also. But right now, I’m not buying new graphics cards, and just doing the math, neoscrypt on pre-GCN hardware doesn’t make any sense. Hopefully that will change.

Here you guys go: https://ottrbutt.com/tmp/neoscrypt.cl

Wolf0, that one didn’t help on pre-GCN cards, at least on mine. Hashrate went from 16.5 Kh/s to 13 Kh/s. Not that you said it would help old cards, but for those of us with older hardware, this appeared to be a step in the wrong direction.

I updated my drivers from 14.4 to 14.9 on an HD 6950 with shaders unlocked (Windows 7 64 bit). My hashrates increased a little, but I stopped getting accepteds. I tried Wolf0s’ sgminer build, and cgminer 3.7.8. I even tried redownloading sgminer to start with a clean slate.

I am using GPU_MAX_ALLOC_PERCENT=100

GPU_USE_SYNC_OBJECTS=1

I tried reducing intensity, lowering -w, and some other stuff.

I uninstalled the 14.9 and reinstalled 13.12 drivers (I didn’t really love 14.4) and I get accepteds again.

Still at 16 Kh/s when newer cards get almost 10X that. On both scrypt and groestl, HD 6950s are good for about 1/2 what a 290X gets (450 Kh/s scrypt and 7.5 Mh/s groestl.) But it is much better than it was, so thanks Wolf0 and Ghostlander. Hopefully we’ll get up to 50-75 Kh/s soon on the older hardware.

3.7.7c still has miserable performance on HD 6950. Can someone please add support for VLIW cards? I would be happy to test or provide log files.

Thanks.

Tried lizhi’s new 3.7.7b with Radeon HD 6950

-g 2 -w 64 -I 14 = 4.45 KHS. WU = 4.1 2.04 KHS at the pool. Extremely unstable. Screen flickering… Had a hard time killing it.

-g 2 -w 64 -I 12 = 3.2 KHS. WU = 3.7. 2.99 KHS at the pool… Laggy, but stable (normal for mining).

-g 1 -w 64 -I 12 = 3.2 KHS. WU = 3.7. 3.1 KHS at the pool. Mining

-g 1 -w 48 -I 12 = GPU failure.

-g 1 -w 32 -I 12 = 3.92 KHS. WU = 4.3. 3.3 KHS at the pool. Mining.

-g 2 -w 32 -I 12 = 4.0 KHS. WU = 1.8. 2.6 KHS at the pool. Mining.

-g 1 -w 32 -I 10 = 1.9 KHS. WU - 1.9. 1.75KHS at the pool. Almost usable as a PC while mining.

-g 1 -w 24 -I 12 = GPU failure.

-g 1 -w 16 -I 12 = 2.8 KHS. WU = 2.5. 3.0 KHS at the pool. Mining.

Slightly better numbers, but not significantly. Stability seems a little better.

Going as low as -I 8 reduces the performance down to 1.0 KHS. cgminer won’t even start lower than that. That’s about 1/10th the performance of CPU mining, and even at that low of an intensity setting, it still renders the PC virtually unusable.

Here’s the thing - I’ve got my core clock at 900, it really doesn’t like going much higher, even with a little extra vCore. The GPU never gets hotter than 74C, The fan doesn’t even spin up at all, even at -I 14, so maybe it’s not using much power. But at the same time, it renders Windows nearly unusable. Clearly, it’s using all available resources, but it’s not using them effectively.

I haven’t seen anyone post good results using HD5000/HD6000 hardware. I have seen I guess 3 or 4 people say they’re getting similar results to what I’m getting. If I had to guess, the code just will not perform on VLIW hardware.

I don’t think I’m going to buy new GPUs just to continue mining PXC. I’d have to get 50 blocks a day for 6 months to pay for them.

My settings are way off? I’ve tried alot of settings. How do you know what settings I’ve tried? I only mentioned that it renders the PC unusable even at relatively low intensity settings like -I 8, while CPU mining 4 times as fast is only minimally noticeable, I can leave minerd running all day long, and use the computer for everything except gaming or using flash while mining…

I’m a newbie here. I’m not a newbie to mining. I have tried more than reasonable troubleshooting.

I’ve been trying this for about 3 weeks, since 3.7.5 was just released. I’ve tried numerous settings. I’ve tried both 13.12 drivers and 14.4 drivers. I’ve tried installing the sdk to see if that helped. I’ve tried making the bin on 13.12 drivers and using it with identical parameters using 14.4. I’ve tried alot of things.

I’m open minded, and I want this to work. so I just tried your settings, -g 2 -w 24 -I 14. My GPU won’t start at those settings. -w 24 is the problem. it causes:

Error -54: Enqueueing kernel onto command queue. (clEnqueueNDRandKernel)

GPU 0 failure, disabling!

GPU 0 failure, disabling!

Thread 1 failure, exiting

Thread 0 failure, exiting

If I make the settings -g 2 -w 32 -I 14, it starts succesfully and mines at 3.8 KHS, a new record for me, but still less effective than CPU mining, and it renders the PC unusable. With these settings, driver does appear to make a difference. The 14.4 driver only gets 2.4 KHS and is noticeably more laggy, like borderline unstable even.

-g 2 -w 64 -I 14 yields 4.188 KHS. Better. Finally have performance equal to a core 2 duo CPU mining. Probably using twice the power to do it. Laggy as hell, even on the 13.12 drivers. cgminer became unresponsive after a while. I think it was still mining, but cgminer stopped updating the screen, and I couldn’t even quit, had to hit the red x to get it to stop. Still nowhere near a 6 core amd CPU for productivity or efficiency.

-g 2 -w 64 -I 12 yields 3.23 KHS, seems stable, but pointless.

-g 2 -w 128 -I 12 yields 3.0 KHS, not helpful.

-g 2 -w 128 -I 14 yields 4.0 KHS, then the graphics driver (13.12) blew up.

I’ll try anything you gentlemen suggest, but if I can’t get at least 15 KHS when newer cards are hitting close to 50, this is pointless. There is something wrong with the with how this miner/kernel interact with older radeons. Hopefully, it can be fixed. if not, I understand, and I’ll move on.

Edit - I 14 appears to produce less accepted shares. Hashrate measured at the pool is higher with -I 12.

I have two PCs with Radeon HD6950s, shaders unlocked. They’re not cutting edge, but they are decent miners. Slightly overclocked, they get about 450 KHS scrypt mining each, or about 7.5 MHS each mining Goestl.

The PCs are running Windows 7 X64. One has 13.12 drivers, one has 14.4. That really doesn’t seem to matter, at least on my two PCs. Swapping bin files had no impact.

I have tried the Neoscrypt GPU miner, versions 3.7.5 and 3.7.7b. I get accepted shares, and I can solo mine, but the mining is at very low hash rates.

After reading through this whole thread more than twice in case I missed something, I have tried a variety of different settings. The best I can get with HD6950s is about 3 KHS, and it renders the PC unusable, even at relatively low -I settings (-I 8. I get similar performance (~2 KHS) per core CPU mining, and the PC is pretty usable while minerd is running. So at the moment, CPU mining is about 4 times more productive and uses about 1/3 of the power as GPU mining on my hardware. But CPU mining is never going to be productive when most other miners are using GPUs at 25-50 KHS.

This is going to alienate me from Neoscrypt if this is not addressed. Since this beta has been release, difficulty has gone up, and that’s only going to get worse when there is widespread adoption of the GPU miner. I’m not going to buy new GPUs just to mine PXC, or FTC for that matter.

I’m not whining, it’s just a simple decision based on the relative performance of my hardware. Some of the comments here have been “when are we going live?” If this doesn’t get fixed, I’m not going to be able to reasonably compete any more, and I’ll have to find something else to mine where my hardware is competitive (like Groestl), and so will anyone else mining with similar hardware.

I don’t particularly want to abandon PXC, I’d much rather stay. If I can help the developers to resolve the performance issue by testing or providing log files or whatever, I’d be happy to, just let me know what I can do.

I am assuming your using the latest version (3.7.7b at this time).

This looks like it works - didn’t wait to find a block, it could take a while, but it’s mining, and I get accepted shares at pools:

cgminer.exe --neoscrypt -o 127.0.0.1:9554 -u yourrpcuser -p yourrpcpassword -o stratum+tcp://stratum.morehash.pw:3336 -u yourwalletaddress -p anything -I 10

You’re going to need to look at your phoenixcoin.conf file to get your rpcuser and rpcpassword. The .conf file lives in a folder called data, which isn’t in a standard location. Mine is on my desktop - no idea why it’s there, I didn’t even think that would work, but it does. If you don’t have a phoenixcoin.conf, your going to need to make one to solo mine.

The second pool settings will be your failover, and let you get work using longpoll. I don’t know if it helps performance-wise or not, but it makes me feel better when cgminer says “connected to… with LP” than when it says “connected to … without LP”

Good luck!