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Up Topic The Rybka Lounge / Computer Chess / iPad Pro 2021 Version with M1 Chip
- - By Milton (***) Date 2021-04-23 05:06
The new iPad Pro using the Apple M1 chip will be released in two configurations --  either with 8GB or 16 GB of RAM.
Factoring out the high cost of the 16 GB RAM version (which will also include either 1TB or 2TB of storage space), would you expect the 16 GB RAM version to benchmark significantly better than the 8 GB RAM version for chess apps such as "SmallFish Chess for Stockfish"?  Thanks.
Parent - - By MrKris (***) Date 2021-04-24 03:10

> would you expect the 16 GB RAM version to benchmark significantly better than the 8 GB RAM version for chess apps such as "SmallFish Chess for Stockfish"?  Thanks.


NPS should be about  the same.

Remember the iPad M1's will be lowest power, fewest GHz, and slowest Sf benchmark of the M1's because of the Pad's smaller size - less to dissipate heat and smaller battery.

http://talkchess.com/forum3/viewtopic.php?f=2&t=75911&start=10
Benchmarks on a MacBook Air 16GB 8-core GPU
Stockfish compiled for M1 Apple Silicon, commit f9595828eb7e5e970b0be3ee5f84ddd726845523 Wed 11 Nov
Code: Select all
bench 2408119
bench 64 1 20    2270034
bench 64 2 20    4503092
bench 64 4 20    9069926
bench 64 6 20   10820178
bench 64 8 20   12438598 **

lc0, compiled for M1 running on CPU using Apple's Accelerate framework, output of benchmark first position only:
--backend=blas --weights=J92-330   97 *
--backend=blas --weights=T70net-703810   1703

lc0, compiled for M1 running on GPU using OpenCL, output of benchmark first position only:
--backend=opencl --weights=J92-330     104 *
--backend=opencl --weights=T70net-703810   3431


Here:
Ryzen 2700X desktop 8c/16threads: above & 16x hash:
bench 64 8 20   14872840     bench 1024 8 20  14988769 **
bench 64 16 20 21395637     bench 1024 16 20 20376501

             lc0 blas  J94-100      0 * (?! it gets up to 71, I forget how long though ?!)
lc0 cuda-fp16  J94-100 7980 *

* lc0 on blas/opencl will be much weaker than Stockfish on the same machine for M1.
It takes a large net and cudnn or cuda and a RTX (like my 7980 lc0 bench, not the M1's lc0 benches 97/104 above) to keep up with Stockfish - see: http://rybkaforum.net/cgi-bin/rybkaforum/topic_show.pl?tid=33879 with cudnn-fp16 (=cuda-fp16).

- - - - - - - -
I cannot find any M1 GHz data except for all models max. 3.2 GHz.
Wild guess: at worst iPad Sf benchmark 1/2 of the MacBook Air above, if so these might come into consideration for the Windows software library (though Lc0 really is only for an RTX, these do not have it):

$580 https://www.newegg.com/pure-silver-acer-swift-3-sf314-42-r7lh-mainstream/p/N82E16834316931?Item=N82E16834316931&quicklink=true

$600 https://www.newegg.com/indie-black-asus-vivobook-s513ia-db51-mainstream/p/N82E16834235483?Item=N82E16834235483
Parent - By Milton (***) Date 2021-04-24 21:47
Thanks very much for the information! I have pretty much decided to get a new iPad Pro with the improved 12.9" screen.  My main decision is whether it would be worth it to pay extra for the 16 GB RAM version based on how much better it would be for chess apps. Based on your input, I am inclined to save my money and get the model with 8 GB RAM and 256 GB storage. Thanks again!

Milton
Up Topic The Rybka Lounge / Computer Chess / iPad Pro 2021 Version with M1 Chip

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