macOS can't compile from source or benchmark vdf

[heavyarms2112]

sudo ./bin/benchmark-vdf

Failed to create dirty io scheduler thread 1005, error = 35 ./bin/benchmark-vdf: line 10: 1492 Abort trap: 6 $ARWEAVE foreground $ARWEAVE_OPTS -run ar benchmark_vdf

hardware: Mac mini m2
OS version: 13.2.1

Also on compilation from source hit the below error message.

===> ar_weave:test/0 calls undefined function eunit:test/1 ===> Release successfully assembled: _build/default/rel/arweave ===> Unable to copy from /Users/rjxm2/miners/arweave/arweave/apps/arweave/lib/RandomX/build/randomx-benchmark to /Users/jdoe/miners/arweave/arweave/_build/default/rel/arweave/bin/randomx-benchmark because of {copy_failed, "/Users/jdoe/miners/arweave/arweave/apps/arweave/lib/RandomX/build/randomx-benchmark", "/Users/jdoe/miners/arweave/arweave/_build/default/rel/arweave/bin/randomx-benchmark", enoent}

[JamesPiechota]

Yeah you can ignore those. MacOS isn't really supported. We can only confirm that the arweave node runs as a VDF server - but beyond that it should be considered unsupported (e.g. the benchmark-xxx tools may not work)

[heavyarms2112]

Yeah you can ignore those. MacOS isn't really supported. We can only confirm that the arweave node runs as a VDF server - but beyond that it should be considered unsupported (e.g. the benchmark-xxx tools may not work)

what's the link for VDF server then? Is there precompiled binary?
this is what I'm trying to run in first place.

[JamesPiechota]

Does bin/start not work? If not then can you upload the output from that?

There is no precompiled vdf binary. Only the instructions for compiling from source - but they have only been tested against bin/start. The benchmark binaries you've listed above haven't been tested on macos.

[heavyarms2112]

./bin/start won't work either. It throws the same error message

+ cp /Users/rjxm2/miners/arweave/arweave/_build/default/rel/arweave/bin/arweave /Users/rjxm2/miners/arweave/arweave/bin/arweave-dev
+ ln -s /Users/rjxm2/miners/arweave/arweave/_build/default/rel/arweave/releases /Users/rjxm2/miners/arweave/arweave/releases
+ ln -s /Users/rjxm2/miners/arweave/arweave/_build/default/rel/arweave/lib /Users/rjxm2/miners/arweave/arweave/lib

Arweave launch script: /Users/rjxm2/miners/arweave/arweave/bin/arweave-dev
Arweave launch options: +Ktrue +A1024 +SDio1024     +MBsbct 103424 +MBsmbcs 10240 +MBlmbcs 410629 +MBmmmbc 1024 +MBas aobf     +sbwtvery_long +sbwtdcpuvery_long +sbwtdiovery_long     +swtvery_low +swtdcpuvery_low +swtdiovery_low +Bi
-h
Custom Erlang Options: 
Launching Erlang Virtual Machine...
Exec: /opt/homebrew/Cellar/erlang/26.2.5/lib/erlang/erts-14.2.5/bin/erlexec -boot /Users/rjxm2/miners/arweave/arweave/releases/2.7.4/start -mode embedded -boot_var SYSTEM_LIB_DIR /opt/homebrew/Cellar/erlang/26.2.5/lib/erlang/lib -config /Users/rjxm2/miners/arweave/arweave/releases/2.7.4/sys.config -args_file /Users/rjxm2/miners/arweave/arweave/releases/2.7.4/vm.args -- console +Ktrue +A1024 +SDio1024 +MBsbct 103424 +MBsmbcs 10240 +MBlmbcs 410629 +MBmmmbc 1024 +MBas aobf +sbwtvery_long +sbwtdcpuvery_long +sbwtdiovery_long +swtvery_low +swtdcpuvery_low +swtdiovery_low +Bi -run ar main disable randomx_jit -h
Root: /Users/rjxm2/miners/arweave/arweave
/Users/rjxm2/miners/arweave/arweave
Failed to create dirty io scheduler thread 1005, error = 35
./bin/start: line 50:  2448 Abort trap: 6           $ARWEAVE $ARWEAVE_COMMAND $ARWEAVE_OPTS ${ERLANG_ARGS[@]} -run ar main $RANDOMX_JIT ${ARWEAVE_ARGS[@]}
Arweave Heartbeat: The Arweave server has terminated. It will restart in 15 seconds.
Arweave Heartbeat: If you would like to avoid this, press control+c to kill the server.```

[heavyarms2112]

this is specific to erlang which I'm sure ./bin/start would also use.

[JamesPiechota]

this is specific to erlang which I'm sure ./bin/start would also use.

Oh cool - so you know what the problem is?

[heavyarms2112]

this is specific to erlang which I'm sure ./bin/start would also use.

Oh cool - so you know what the problem is?

what I meant is this issue would pop up on running /bin/start as well as shown above.

[JamesPiechota]

If you go into your /Users/rjxm2/miners/arweave/arweave/ directory and run:

1. git status
2. git submodule status

What do they print?

[JamesPiechota]

Ah also, what does ulimit -n show? Arweave still needs the file descriptors to be increased on MacOS, but it's trickier to do.

We usually just do the ulimit -n 9000000 in the same session as the invocation e.g.:

ulimit -n 9000000; ./bin/start

[heavyarms2112]

changing ulimit won't help I guess but I'll try anyways

I think it's related to kern.num_taskthreads which is set to 2048 per process. Are we requesting for more than that for erlang vm?

[heavyarms2112]

Yup didn't help

Launching Erlang Virtual Machine...
Exec: /opt/homebrew/Cellar/erlang/26.2.5/lib/erlang/erts-14.2.5/bin/erlexec -boot /Users/rjxm2/miners/arweave/arweave/releases/2.7.4/start -mode embedded -boot_var SYSTEM_LIB_DIR /opt/homebrew/Cellar/erlang/26.2.5/lib/erlang/lib -config /Users/rjxm2/miners/arweave/arweave/releases/2.7.4/sys.config -args_file /Users/rjxm2/miners/arweave/arweave/releases/2.7.4/vm.args -- console +Ktrue +A1024 +SDio1024 +MBsbct 103424 +MBsmbcs 10240 +MBlmbcs 410629 +MBmmmbc 1024 +MBas aobf +sbwtvery_long +sbwtdcpuvery_long +sbwtdiovery_long +swtvery_low +swtdcpuvery_low +swtdiovery_low +Bi -run ar main
Root: /Users/rjxm2/miners/arweave/arweave
/Users/rjxm2/miners/arweave/arweave
Failed to create dirty io scheduler thread 1005, error = 35
./bin/start: line 50:  9064 Abort trap: 6           $ARWEAVE $ARWEAVE_COMMAND $ARWEAVE_OPTS ${ERLANG_ARGS[@]} -run ar main $RANDOMX_JIT ${ARWEAVE_ARGS[@]}
Arweave Heartbeat: The Arweave server has terminated. It will restart in 15 seconds.
Arweave Heartbeat: If you would like to avoid this, press control+c to kill the server.
^C
sh-3.2# ulimit -n
9000000
sh-3.2# git status
On branch master
Your branch is up to date with 'origin/master'.

nothing to commit, working tree clean
sh-3.2# git submodule status
 913873c13a2dffb7c4188c39b4eb188f912f523e apps/arweave/lib/RandomX (v1.0.3-210-g913873c)

[heavyarms2112]

Looks like I could get some success.
I reduced the number of erlang threads in arweave's env variable for erlang. Looks like I hit a thread limit obviously as mentioned in my previous post.

unfortunately, the kern.num_taskthreads is a read only variable and can't be modified. Is 512 value below acceptable?
+Ktrue +A512 +SDio512

Arweave launch script: /Users/rjxm2/miners/arweave/arweave/bin/arweave-dev
Arweave launch options: +Ktrue +A512 +SDio512     +MBsbct 103424 +MBsmbcs 10240 +MBlmbcs 410629 +MBmmmbc 1024 +MBas aobf     +sbwtvery_long +sbwtdcpuvery_long +sbwtdiovery_long     +swtvery_low +swtdcpuvery_low +swtdiovery_low +Bi +S 16:16
Exec: /opt/homebrew/Cellar/erlang/26.2.5/lib/erlang/erts-14.2.5/bin/erlexec -noinput +Bd -boot /Users/rjxm2/miners/arweave/arweave/releases/2.7.4/start -mode embedded -boot_var SYSTEM_LIB_DIR /opt/homebrew/Cellar/erlang/26.2.5/lib/erlang/lib -config /Users/rjxm2/miners/arweave/arweave/releases/2.7.4/sys.config -args_file /Users/rjxm2/miners/arweave/arweave/releases/2.7.4/vm.args -- foreground +Ktrue +A512 +SDio512 +MBsbct 103424 +MBsmbcs 10240 +MBlmbcs 410629 +MBmmmbc 1024 +MBas aobf +sbwtvery_long +sbwtdcpuvery_long +sbwtdiovery_long +swtvery_low +swtdcpuvery_low +swtdiovery_low +Bi +S 16:16 -run ar benchmark_vdf
Root: /Users/rjxm2/miners/arweave/arweave
/Users/rjxm2/miners/arweave/arweave
=INFO REPORT==== 27-Aug-2024::21:58:41.653441 ===
    alarm_handler: {set,{system_memory_high_watermark,[]}}


VDF step computed in 0.86 seconds.

[os_mon] memory supervisor port (memsup): Erlang has closed
[os_mon] cpu supervisor port (cpu_sup): Erlang has closed

[JamesPiechota]

Yep for a VDF server +A512 +SDio512 or even lower is fine

[JamesPiechota]

If you want to open a PR against https://github.com/ArweaveTeam/arweave/blob/master/README.md with troubleshooting tips, I can merge it.

[JamesPiechota]

Also you can override the Erlang VM flags using the -- syntax (if you want to avoid modifying arweave.env):

./bin/start +A512 +SDio512 -- [normal arweave launch flags]