Topic: CCminer(SP-MOD) Modded NVIDIA Maxwell / Pascal kernels. - page 956. (Read 2347664 times)

Keep on the good work!

Transaction ID: f1d3e7bd537cb79fc454cca016e9877c5b4c32223d657a8e8cd26a6c0bf04c51-000

New 1.5.66 version downloaded from https://github.com/sp-hash/ccminer/releases/download/1.5.66/release66.7z is showing 1.5.65 (ccminer.exe -V)...

Yup you can gain efficiency by lowering the TDP slider. However you lose hashrate and clockspeed doing it to the point where it's not even worth buying the bigger cards anymore. Running a 970 at 960 speeds is kinda pointless.


Yeah I use wood too. Wood has a pretty high point of catching fire. It's a great insulator against electricity and heat up till that point.

yes, I think DJM34 did a full rewrite to reach the number he has now. I am only increasing the hashrate in small steps.

Another binary:

- Faster lyra2v2 on gtx 750ti (+5%)
- Faster quark. (Pallas)
- Fixed crash in the whirlpoolx algo on linux(T Nelson)
- Other stability fixes by T Nelson.
- Fixed broken hash in cuda 7.0 (x11) (but cuda 7 is slower)

1.5.66(sp-MOD) is available here: (07-09-2015)

https://github.com/sp-hash/ccminer/releases/

The sourcecode is available here:

https://github.com/sp-hash/ccminer

My 970 is doing 9.85MHASH with the opensource kernal. And the 980 around 12 I think. Not tested. And I have removed the shfl instruction from the djm34's implementation, so you can try to convert it to opencl. he-he

Pretty good when the opensource kernal is doing 4MHASH on the r9 280x

This is what the scrypt miners did with their 6x 280x rigs.. X11,quark and lyra2v2 use less memory and power, so not so much heat is generated.

Djm34 posted this pic:

His private kernal is doing 15,4MHASH on the 980

The 980ti is doing 15.7 MHASH with the opensource kernal. core@1270 mhz mem 1600

I have submitted now. I was unable to find the right launch config for the 970, so this optimalization is just for the 750ti.

With tpb52=9  and the 50 kernal the 970  was just abit slower. But I had to case in the code and run seperate code for compute 52 devices.

Hijacking SP_'s thread again (sorry), but you guys started it ;-)

I just finished filling my rig up with 750Tis (Gigabyte, 4 windforce OC, 2 LP) and I'm starting to see interesting heat patterns: the cards on the left suck air from the back of their neighbor and are significantly hotter. I can guess which card is where just by looking at the temperatures and fan speeds... The windforce are handling it like champs (hottest at 57°C), but the LP are struggling (hottest at 68°). I put some case fans I had laying around on top of the cards, which brought them to 50/60, but I'd like a cleaner solution.

I'm contemplating 3 options and I'd like your input on which you think is the best one, or even a different one:
- Build a larger rig so I can spread the cards more (3cm between cards on the current one) - not sure it would change much: the cards don't dissipate enough to create a real convection movement between them
- Put a big dumb house fan in front of it and blow on the entire rig - simple, efficient, really ugly
- Encase the rig and control the air movement by letting air enter at the bottom and extracting it at the top with standard computer fans (I'm thinking 5*140mm, directly above the cards) - interesting from an engineering standpoint, would even allow me to filter the intakes to limit dust buildup. But aerodynamics are hard, especially when there's a big mess of cables in the middle...

What do you think?

In the optimalization i use half of the registers and more level1 cache. Will submit soon.

Great!
If i can help, just ask.

I have one, it is a 1x PCIe slot to 4x 1x PCIe slot multiplier.  It worked in one of my motherboards.  I was able to mine script with CudaMiner and a GTX 520 (21kh/s) in the motherboard, and a GTX 550ti (90kh/s) and a 9800+ GTX (14kh/s) on the multiplier.  Unfortunately, I have not been able to get any cards of the 700 series to work with it, nor any AMD cards.  I may experiment some more, but it was sent with no documentation, and I have small expectations.  The adapter that you linked appears to be the same model that I have, or very similar.

If you look, there is a manufacturer of these items that tailored their product specifically for GPUs and mining.  The price, however, is much higher.

--scryptr

I have a 200KHASH lyra improvement ready for the 750ti. (+5%)

but it is slower on the 970. Need to tweak it some more

I saw couple of guys mentioned here PCIe port multipliers.
Does anybody have a first hand experience with them?
I tried this one: http://www.amazon.com/PCI-E-Express-Port-Riser-Switch/dp/B00TR01QJ8
and it didn't work for me (Win8.1x64 ASRock Fatal1ty Z87 Killer 7xPCIe) so I ended up returning the switch/port-multiplier.
The goal was to have a 10x GPU miner but I had to settle with a 7x GPU one.

and make sure it is a "one rail" psu with only one line otherwise cable/power usage won't be sufficient... (molex/sata are mostly to power hdd/fans...)

MOLEX to PCIe ADAPTER--

If you have anything bigger than a 750ti, the 2-MOLEX to 1-PCIe adapters are dangerous.  I used one to power an AMD 280x and it melted.       --scryptr

I would not use unpowered risers in any case. There's just no good reason to run 450W through the MB
if it can be avoided.

I haven't found a power spec on molex connectors but the adapters that came with my GPU mapped
2 molex connectors to 1 8 pin PCIe power connector. 2 extra molex connectors on the MB to power 6
slots just doesn't seem adequate.

I went with the reference design, as that gives the best power draw. Even the reference ACX's have 1 6-pin and 1 8-pin pci-e connector.

One thing I've learnt is the extra juice doesn't really help at all.

I'm doing 30 mh/s on one of my ti's and 29 mh/s on the other (Quark). 1481 Mhz and 1477 Mhz respectively.