RDNA 3?

[Magellan3s]

Has anyone been able to benchmark the 7900 xtx?

[James Heinrich]

Originally Posted by Magellan3s

Has anyone been able to benchmark the 7900 xtx?

If there are any mfakto or gpuowl benchmarks for 7900 (XT or XTX I don't care) I would desperately likely to see them, the numbers on my charts are more-or-less made up.

[Xyzzy]

https://old.reddit.com/r/Amd/comment...e_7xxx_series/

[M344587487]

I don't know what to make of that thread. Particularly this quote seems misguided:

...dual SIMD is useless for some (most) applications since the added second SIMD per CU doesn't support integer ops...

given that most applications are interested in fp AFAIK.

The locked PP sounds concerning, but from what I recall we could do as we pleased with Vega 10/20, and this quote:

There is some small sliver of hope that AMD will eventually unlock the PPtables, but looking at Vega10/20, that doesn't seem likely.

seems to contradict that. If they're wrong about that I'm not convinced they know what they're talking about.

...Also, indications are that they've moved instruction pipeline responsibilities to software, meaning you now need to carefully reorder instructions to not get pipeline stalls and/or provide hints (there's a new instruction for this specific purpose, s_delay_alu). Since many software kernels are hand-rolled in raw assembly, this is a potentially a huge pain point for developers - since this platform needs specific instructions that no other platform does....

Does this apply to gpuowl or mfakto? I don't think .cl files are assembly or that assembly is used at all but could be wrong.

[Magellan3s]

Originally Posted by James Heinrich

If there are any mfakto or gpuowl benchmarks for 7900 (XT or XTX I don't care) I would desperately likely to see them, the numbers on my charts are more-or-less made up.

7900 xtx

2022-12-28 01:30:43 GpuOwl VERSION v7.2-70-g212618e
2022-12-28 01:30:43 config: log 1000
2022-12-28 01:30:43 config:
2022-12-28 01:30:43 device 0, unique id ''
2022-12-28 01:30:43 gfx1100-0 77936867 FFT: 4M 1K:8:256 (18.58 bpw)
2022-12-28 01:30:43 gfx1100-0 77936867 OpenCL args "-DEXP=77936867u -DWIDTH=1024u -DSMALL_HEIGHT=256u -DMIDDLE=8u -DAMDGPU=1 -DMM_CHAIN=1u -DMM2_CHAIN=2u -DMAX_ACCURACY=1 -DWEIGHT_STEP=0.33644726404543274 -DIWEIGHT_STEP=-0.25174750481886216 -DIWEIGHTS={0,-0.44011820345520131,-0.37306474779553728,-0.29798072935699788,-0.21390437908665341,-0.11975874301407295,-0.014337887291734644,-0.44814572555075455,} -DFWEIGHTS={0,0.78609128957452257,0.5950610473469905,0.42446232150303748,0.2721098723818392,0.1360521812214803,0.014546452690911484,0.81207258201996746,} -cl-std=CL2.0 -cl-finite-math-only "
2022-12-28 01:30:44 gfx1100-0 77936867 OpenCL compilation in 1.07 s
2022-12-28 01:30:44 gfx1100-0 77936867 trig table : 65 points, cos 73.86 bits, sin 73.34 bits
2022-12-28 01:30:44 gfx1100-0 77936867 trig table : 257 points, cos 72.90 bits, sin 73.11 bits
2022-12-28 01:30:45 gfx1100-0 77936867 trig table : 262145 points, cos 72.03 bits, sin 72.56 bits
2022-12-28 01:30:45 gfx1100-0 77936867 maxAlloc: 0.0 GB
2022-12-28 01:30:45 gfx1100-0 77936867 You should use -maxAlloc if your GPU has more than 4GB memory. See help '-h'
2022-12-28 01:30:45 gfx1100-0 77936867 P1(0) 0 bits
2022-12-28 01:30:45 gfx1100-0 77936867 PRP starting from beginning
2022-12-28 01:30:45 gfx1100-0 77936867 OK 0 on-load: blockSize 400, 0000000000000003
2022-12-28 01:30:45 gfx1100-0 77936867 validating proof residues for power 8
2022-12-28 01:30:45 gfx1100-0 77936867 Proof using power 8
2022-12-28 01:30:46 gfx1100-0 77936867 OK 800 0.00% 1579c241dc63eca6 784 us/it + check 0.36s + save 0.11s; ETA 16:58
2022-12-28 01:30:54 gfx1100-0 77936867 10000 0.01% fc4f135f7cf4ad29 785 us/it
2022-12-28 01:31:02 gfx1100-0 77936867 20000 0.03% 3cd1bd9d5e09cbc5 788 us/it
2022-12-28 01:31:09 gfx1100-0 77936867 30000 0.04% c4e0ff35e3290d98 791 us/it
2022-12-28 01:31:17 gfx1100-0 77936867 40000 0.05% dffe1b1b0d748128 793 us/it
2022-12-28 01:31:25 gfx1100-0 77936867 50000 0.06% 52e286945371ed29 793 us/it
2022-12-28 01:31:33 gfx1100-0 77936867 60000 0.08% 0945da4dc08bdd95 795 us/it
2022-12-28 01:31:41 gfx1100-0 77936867 70000 0.09% 7131fa4eb77f4bb2 795 us/it

[axn]

Originally Posted by Magellan3s

7900 xtx

2022-12-28 01:30:43 GpuOwl VERSION v7.2-70-g212618e

Can you try running 2 parallel instances of gpuowl (you can use 77936923 for the second instance)? Would like to see what, if any, thruput gains we can get.

[M344587487]

Originally Posted by axn

Can you try running 2 parallel instances of gpuowl (you can use 77936923 for the second instance)? Would like to see what, if any, thruput gains we can get.

The results are from here: https://mersenneforum.org/showthread.php?t=28303

[preda]

Chips&Cheese benchmarking 7900xtx:

https://chipsandcheese.com/2023/01/0...-architecture/

[M344587487]

The ISA has been published, a nice light read at 600 pages: https://gpuopen.com/rdna3-isa-guide-now-available/