CCminer(SP-MOD) Modded GPU kernels.

[ryen123]

Commit 723, Win 7.

Unreal Quark hashrate from 1x 750Ti [-g 3 -i 22]

[rednoW]

All this threading is just playing with numbers, pools show real performance drop ...

[ryen123]

All this threading is just playing with numbers, pools show real performance drop ...

So far it does improve performance. My 5 min-average went from ~6.5 MHs to ~7.2 MHs. Just not what's reported on ccminer window.

[sp_]

I think the stats are broken again in the last commit.

[sp_]

CCMINER -g 3 -i 22 --

For me that only does 37.3 per rig and and it's not even fluctuating. Without using -g and with -i 23.6 I get 37.6 per rig of Gigabyte OC cards with +140 on the core.
For some reason I was unable to find any algo which resulted in more hash using -g.  

On my windows 8 installation, anything above -i 22 is crashing the miner.

[sp_]

All this threading is just playing with numbers, pools show real performance drop ...

So far it does improve performance. My 5 min-average went from ~6.5 MHs to ~7.2 MHs. Just not what's reported on ccminer window.

I have also messured a increased performance on the pool when mining quark around 5-10%

What cpu's are you running with? How many cores?

[rednoW]

What cpu's are you running with? How many cores?

It's old athlon 64 x2 dual core running 3ghz

[sp_]

What cpu's are you running with? How many cores?

It's old athlon 64 x2 dual core running 3ghz

I think the problem is that you are using the 750 (512 shaders, 1gb memory) card. The card is out of resources, and is unable to increase the speed with more threads.

[ryen123]

All this threading is just playing with numbers, pools show real performance drop ...

So far it does improve performance. My 5 min-average went from ~6.5 MHs to ~7.2 MHs. Just not what's reported on ccminer window.

I have also messured a increased performance on the pool when mining quark around 5-10%

What cpu's are you running with? How many cores?

Mne's a i7-4770k. I have the ccminer running in realtime mode.

[sp_]

All this threading is just playing with numbers, pools show real performance drop ...

So far it does improve performance. My 5 min-average went from ~6.5 MHs to ~7.2 MHs. Just not what's reported on ccminer window.

I have also messured a increased performance on the pool when mining quark around 5-10%
What cpu's are you running with? How many cores?

Mne's a i7-4770k. I have the ccminer running in realtime mode.

CPU usage is up significantly when using multiple threads, How much load on the i7?

[MaxDZ8]

I think the problem is that you are using the 750 (512 shaders, 1gb memory) card. The card is out of resources, and is unable to increase the speed with more threads.

How is this happening?

[ryen123]

Also getting loads of errors.

[sp_]

Also getting loads of errors.

Yes working to fix this. In benchmark mode it works fine and the hashrate is higher. You need to mine with a high difficulty to reduce the errors. for one card set the password to f.ex -p d=0.05
I have confirmed that two threads on the same gpu produce 2 different valid hashes (benchmarkmode) But for some reason the pool connection is causing problems...

[ryen123]

CPU usage is up significantly when using multiple threads, How much load on the i7?

CPU usage somewhere between 7 to 13% (VARDIFF)

Edit: With d=0.05, constant cpu usage around 13%.

[sp_]

I think the problem is that you are using the 750 (512 shaders, 1gb memory) card. The card is out of resources, and is unable to increase the speed with more threads.

How is this happening?

I guess the driver will have to wait until a cudacore is available in order to compute the 2nd hash.

The gtx 980x has 2048 cuda cores, but I only use 512 (threads per block). With the -g 4 parameter, all the cudacores will be used. So the highend cards will get the most speedincrease. But with validation errors, the rate on the pool will be lower. (These has to be removed)

[sp_]

CPU usage is up significantly when using multiple threads, How much load on the i7?

CPU usage somewhere between 7 to 13% (VARDIFF)
Edit: With d=0.05, constant cpu usage around 13%.

Interesting, Is the load spread across the cpu's? or do you have one cpu that takes most of the load?

[ryen123]

CPU usage is up significantly when using multiple threads, How much load on the i7?

CPU usage somewhere between 7 to 13% (VARDIFF)
Edit: With d=0.05, constant cpu usage around 13%.

Interesting, Is the load spread across the cpu's? or do you have one cpu that takes most of the load?

It looks to me like most of the load is across 3 threads.

[rednoW]

I think the problem is that you are using the 750 (512 shaders, 1gb memory) card. The card is out of resources, and is unable to increase the speed with more threads.

So why miner stats show high hashrate? You should fix it I think. If you will fix the stats you will see real situation with performance.

[sp_]

I think the problem is that you are using the 750 (512 shaders, 1gb memory) card. The card is out of resources, and is unable to increase the speed with more threads.

So why miner stats show high hashrate? You should fix it I think. If you will fix the stats you will see real situation with performance.

The stats needs to be fixed, and the cpu validation errors needs to be gone. Working on it..

[sp_]

CPU usage is up significantly when using multiple threads, How much load on the i7?

CPU usage somewhere between 7 to 13% (VARDIFF)
Edit: With d=0.05, constant cpu usage around 13%.

Interesting, Is the load spread across the cpu's? or do you have one cpu that takes most of the load?

It looks to me like most of the load is across 3 threads.

This is as expected. Each gpu thread is assigned a cpu if available.