LeelaSabaki v0.3.0 + Leela Zero 0.15 crash on macOS High Sierra (10.13.6 )

[tangjin]

Hi, yichuan
I want to run the LeelaSabaki on my Mac-pro, but the process LeelaSabaki and LeelaZero crashed about 5 seconds later.
Can you help me? Thank you very much !

1、LeelaSabaki v0.3.0
2、Leela Zero 0.15
3、macOS High Sierra (10.13.6 )
4、MacBook Pro (13-inch, 2018, Four Thunderbolt 3 Ports)
5、/data0/leela-zero/leelasabaki-macos --flat --heatmap /data0/leela-zero/src/leelaz -t 4 -w /data0/leela-zero/best-network --playouts 10 --noponder

Using 4 thread(s).
RNG seed: 9153934374649917980
Detecting residual layers...v1...256 channels...40 blocks.
Initializing OpenCL.
Detected 1 OpenCL platforms.
Platform version: OpenCL 1.2 (May 24 2018 22:33:53)
Platform profile: FULL_PROFILE
Platform name: Apple
Platform vendor: Apple
Device ID: 0
Device name: Intel(R) Core(TM) i5-8259U CPU @ 2.30GHz
Device type: CPU
Device vendor: Intel
Device driver: 1.1
Device speed: 2300 MHz
Device cores: 8 CU
Device score: 512
Device ID: 1
Device name: Intel(R) Iris(TM) Plus Graphics 655
Device type: GPU
Device vendor: Intel Inc.
Device driver: 1.2(Aug 14 2018 19:16:17)
Device speed: 1050 MHz
Device cores: 48 CU
Device score: 612
Selected platform: Apple
Selected device: Intel(R) Iris(TM) Plus Graphics 655
with OpenCL 1.2 capability.
Loaded existing SGEMM tuning.
Wavefront/Warp size: 8
Max workgroup size: 256
Max workgroup dimensions: 256 256 256

bash-3.2# ps aux|grep -i leela
root 3572 0.0 0.0 4267768 908 s001 S+ 9:36下午 0:00.00 grep -i leela
bash-3.2#

[yishn]

Does this problem only occur when using LeelaSabaki, or will Leela Zero crash as well when attached to Sabaki?

[tangjin]

When I used Sabaki and Leela Zero, I can play 3 steps, then the Leela Zero crashed, but the Sabaki was running.
Path: /data0/leela-zero/src/leelaz
Arguments: -g -t 4 -w /data0/leela-zero/best-network --playouts 1 --noponder

[yishn]

Then it's not a LeelaSabaki problem. There's most likely a problem in your Leela Zero binary. Can you try running Leela Zero in your Terminal to see if it crashes when you play some moves?

[tangjin]

When I used Leela Zero only, I can play many steps, the Leela Zero didn't crashed.
/data0/leela-zero/src/leelaz --noponder -t 4 --playouts 1 -w /data0/leela-zero/weights.txt

[yishn]

Ok, then I need more information on the crash: How do you know Leela Zero crashes; does its process simply disappear? Does Sabaki give any errors or is it stuck with a busy cursor? Did you wait for 37 seconds for Leela to respond? Also, is it normal for Leela Zero to answer at A16; this doesn't seem like a normal move?

[tangjin]

Hi, Yishn

1. It is stuck with a busy cursor, and the process disappear in my Terminal.
2. ps ax|grep leela, cannot find the process.
3. I wait for 120s
4. Leela Zero answered at A16, because I set the playouts=1 ?

Thank you.

[Jendker]

@tangjin I have exact same issue on High Sierra, sometimes even the whole system halts.
Calling it with your arguments:
leelaz --noponder -t 4 --playouts 1 -w weights
is fine, but normal functionality is not possible.

This problem was described in this issue: leela-zero/leela-zero#1677
Hopefully it will be fixed in the next version of leela-zero

[tangjin]

@Jendker Thanks a lot.

[Jendker]

I discussed the issue with OpenCL here: leela-zero/leela-zero#1951. The problem discussed in mentioned issue is already fixed, so the only solution is the driver fix, but as Apple is abandoning OpenCL (OpenCL is deprecated https://developer.apple.com/macos/whats-new/) this will likely not happen... Still, running on CPU works fine, so it's not that all bad.