Gateless Gate Sharp 1.3.8: 30Mh/s (Ethash) on RX 480!

[lexele]

With default setting from your .bat, on polaris cards I'm very close to claymore on eth, but my 290x is almost 3mh behind.

[WBF1]

some additional info:

R9 390 with gateless gate & ethash-new = 31.9-32 mhs. xI of 1920, worksize 192, 2 threads

This is the same or better performance I get from Claymore. I am getting slowly increasing HW errors, but no rejected shares or issues shown at the pool side.

This card has +6.5% core clock and 1550 mhz memclock. Drivers are 17.3.2 on Windows 8.1.

[toptek]

zawawa

Does this do what CM 12.4 does yet for ZEC if so , could you give me some tips on how to hit 306 Sol on a 480 8gb at stock setting ? ... CM does that on my 480 8gb at stock no molded bios ..

but

This matches CM's eth miner   at stock setting nice work ..... so I'm gonna start using it when I ETH mine ... and ask to have it added to http://ethosdistro.com/

[joaocha]

On latest drivers, the eth-new works far better them 16.x or lower

[cryptominer420]

I just uploaded a new pre-release:

https://github.com/zawawawa/gatelessgate/releases/tag/v0.1.3-pre4

There are some performance improvements, and ethash-new.cl was added as an experimental feature.
Let me know how that works.

This one works on ubiqpool.io using my old 7870XT

[joaocha]

2 threads dont change too much thing at all...only hardware errors

Just use Xi - 512
and gpu threads  - 1

avoid a lot of hw errors

[cryptominer420]

on 7870XT I am using XI 1512 and -g 2 and it is doing 23MH mining UBIQ 1 HW error in the last hr.

[nerdralph]

some additional info:

R9 390 with gateless gate & ethash-new = 31.9-32 mhs. xI of 1920, worksize 192, 2 threads

This is the same or better performance I get from Claymore. I am getting slowly increasing HW errors, but no rejected shares or issues shown at the pool side.

This card has +6.5% core clock and 1550 mhz memclock. Drivers are 17.3.2 on Windows 8.1.

Sgminer has always been faster than claymore on my 290x on Linux/fglrx.  It's on Polaris where it is slightly behind.

[joaocha]

Zawawa didnt even touch the kernel,and it is fast as claymore on my 390, im sure if he give a week on it, it ill beat claymore

[Superdawg]

i'm getting about 2 mh/s less than genoil miner over 4 cards.

Genoil's gives me about 90 mh/s on 4 rx 480 stock no bios mods
this one says about 88, maybe a bit less.

[zawawa]

I just pushed to the repo an optimized GCN assembly version of ethash-new.cl for RX 470/480.
Each card should get a 1Mh/s boost with it. If this actually works, then I will extend its support to GCN1/GCN3 devices.
(I sold all of my GCN2 cards a while back...)

[laik2]

I just pushed to the repo an optimized GCN assembly version of ethash-new.cl for RX 470/480.
Each card should get a 1Mh/s boost with it. If this actually works, then I will extend its support to GCN1/GCN3 devices.
(I sold all of my GCN2 cards a while back...)

Excellent, but what settings are best to achieve those speeds?
I have tried 1 gpu thread WS=192, xI: 1024 but speed is lower

[zawawa]

I just pushed to the repo an optimized GCN assembly version of ethash-new.cl for RX 470/480.
Each card should get a 1Mh/s boost with it. If this actually works, then I will extend its support to GCN1/GCN3 devices.
(I sold all of my GCN2 cards a while back...)

That's not optimized - you flipped the SLC and GLC bits, which will likely make it a tad SLOWER; it did when I tried that.

That's what I thought as well, but the miner was actually running faster, though.
Let me double check...

[zawawa]

I run the same experiment one more time, and I confirmed that ethash-new.cl actually runs faster with the GLC and SLC bits on.

With the GLC and SLC bits on:



With the GLC and SLC bits off:



The .bat file:

Code:

@echo off
set GPU_FORCE_64BIT_PTR 0
set GPU_MAX_HEAP_SIZE 100
set GPU_USE_SYNC_OBJECTS 1
set GPU_MAX_ALLOC_PERCENT 100
set GPU_SINGLE_ALLOC_PERCENT 100
gatelessgate.exe --gpu-platform 1 -k ethash-new -o stratum+tcp://eu1.ethermine.org:4444 -u 0x91fa32e00b0f365d629fb625182a83fed61f0642.gatelessgate -p x --xintensity 4620 --worksize 192 --gpu-threads 2 --no-extranonce
pause

I ran this experiment on Windows 10 with stock RX 480 and AMD  Crimson Software 16.9.2 as usual.
@laik2 It would be great if you could try the above settings as well. I am puzzled by the results myself...

[laik2]

Tried default config, xI 2048, xI 1024, gpu-threads 2,1...every time the windows crashed, I'm sorry but I can't test due to unknown reason...I don't like windows environment at all.
On linux it's doing ~ claymore.

[SunStruck]

The .bat file:

Code:

@echo off
set GPU_FORCE_64BIT_PTR 0
set GPU_MAX_HEAP_SIZE 100
set GPU_USE_SYNC_OBJECTS 1
set GPU_MAX_ALLOC_PERCENT 100
set GPU_SINGLE_ALLOC_PERCENT 100
gatelessgate.exe --gpu-platform 1 -k ethash-new -o stratum+tcp://eu1.ethermine.org:4444 -u 0x91fa32e00b0f365d629fb625182a83fed61f0642.gatelessgate -p x --xintensity 4620 --worksize 192 --gpu-threads 2 --no-extranonce
pause

I ran this experiment on Windows 10 with stock RX 480 and AMD  Crimson Software 16.9.2 as usual.
@laik2 It would be great if you could try the above settings as well. I am puzzled by the results myself...

--gpu-platform 0 , no ?

still cant connect to suprnova eth tho.. very odd.

[nerdralph]

I just pushed to the repo an optimized GCN assembly version of ethash-new.cl for RX 470/480.
Each card should get a 1Mh/s boost with it. If this actually works, then I will extend its support to GCN1/GCN3 devices.
(I sold all of my GCN2 cards a while back...)

That's not optimized - you flipped the SLC and GLC bits, which will likely make it a tad SLOWER; it did when I tried that.

I was expecting just SLC (bypass L2) to help, though I recall Wolf's comments about GLC (bypass L1) actually helping.  I'd even expect GLC to hurt performance if you weren't very careful to ensure data was read in 64-byte chunks.

p.s.  There's also some easy optimizations to do with instruction reordering (though they might not make much difference in performance).  For example:

Code:

/*d11c6a3e 01a9013c*/ v_addc_u32      v62, vcc, v60, 0, vcc
/*2a7e62b2         */ v_xor_b32       v63, 50, v49
/*dc5c0000 4000003d*/ flat_load_dwordx4 v[64:67], v[61:62] slc glc
/*dc5c0000 3b00003b*/ flat_load_dwordx4 v[59:62], v[59:60] slc glc
/*bf8c0171         */ s_waitcnt       vmcnt(1) & lgkmcnt(1)

The v_xor_b32 can be moved to after the flat_load_dwordx4.

[nerdralph]

I just pushed to the repo an optimized GCN assembly version of ethash-new.cl for RX 470/480.
Each card should get a 1Mh/s boost with it. If this actually works, then I will extend its support to GCN1/GCN3 devices.
(I sold all of my GCN2 cards a while back...)

I probably wouldn't even bother with Southern Islands; no flat_ instructions.  It should be reasonably easy to write a single kernel for Sea Islands and later, with the main differences being for the ABI changes for kernel parameter passing.

[nerdralph]

Just cloned the repo to do a linux build then noticed the autotools requirement.  Ugh.  I much prefer it when developers run autoreconf, and check the configure script into the repo.  Then to build it's just the usual ./configure;make

[zawawa]

Just cloned the repo to do a linux build then noticed the autotools requirement.  Ugh.  I much prefer it when developers run autoreconf, and check the configure script into the repo.  Then to build it's just the usual ./configure;make

I will probably switch to CMake + ninja sooner than later. This whole autotools thing is too archaic to my taste.