bdarla
Machine Learning in Elixir: error thrown in code snippet (page 44)
Running the code snippet of Chapter 2 on page 44 of version B1.0, I get the following error:
Evaluation process terminated - an exception was raised:
** (FunctionClauseError) no function clause matching in String.graphemes/1
(elixir 1.15.2) lib/string.ex:1934: String.graphemes(:ok)
(benchee 1.1.0) lib/benchee/utility/erlang_version.ex:100: Benchee.Utility.ErlangVersion.parse_erlang_version/1
(benchee 1.1.0) lib/benchee/utility/erlang_version.ex:84: Benchee.Utility.ErlangVersion.includes_fixes_from?/2
(benchee 1.1.0) lib/benchee/benchmark/repeated_measurement.ex:60: Benchee.Benchmark.RepeatedMeasurement.determine_resolution_adjustment/2
(benchee 1.1.0) lib/benchee/benchmark/repeated_measurement.ex:42: Benchee.Benchmark.RepeatedMeasurement.determine_n_times/5
(benchee 1.1.0) lib/benchee/benchmark/runner.ex:226: Benchee.Benchmark.Runner.measure_runtimes/4
(benchee 1.1.0) lib/benchee/benchmark/runner.ex:102: Benchee.Benchmark.Runner.measure_scenario/2
(elixir 1.15.2) lib/task/supervised.ex:101: Task.Supervised.invoke_mfa/2
I run the code on an Apple Silicon M2 and I use Elixir 1.15.4 and Erlang/OTP 26.
I have not found any solution to this issue yet.
Marked As Solved
johnmacshea
I had the same issue with Benchee - I saw someone mention in the elixir forum that Benchee was crashing the LiveBook cells a while back. I’m also on Apple Silicon - LiveBook v0.9.3, Elixir v1.14.2.
I was curious so:
{exla_time, exla_result} = :timer.tc(fn →
apply(EXLA.jit(&Softmax.softmax/1), [tensor])
end)
{standard_time, standard_result} = :timer.tc(fn →
Softmax.softmax(tensor)
end)
IO.puts “exla is #{standard_time/exla_time} times faster”
result (one run):
exla is 66.25130208333333 times faster
On multiple runs its between 450 and 500 times faster.
Also Liked
bdarla
Update:
By visiting the Elixir forum, I discovered that with switching to Benchee from the master branch on GitHub, the problem is solved.
Hence, I modified initial setup cell to:
Mix.install([
{:nx, "~> 0.5"},
{:exla, "~> 0.5"},
{:benchee, github: "bencheeorg/benchee", override: true},
])
For the record, the improvement I noted was 337 times faster. I guess this is without using GPU, yet.
Popular Pragmatic Bookshelf topics
Modern front-end development for Rails, second edition - Struggling to get the first chapter to work
Other popular topics
Categories:
Sub Categories:
Popular Portals
- /elixir
- /rust
- /wasm
- /ruby
- /erlang
- /phoenix
- /keyboards
- /python
- /js
- /rails
- /security
- /go
- /swift
- /vim
- /clojure
- /emacs
- /java
- /haskell
- /svelte
- /onivim
- /typescript
- /kotlin
- /c-plus-plus
- /crystal
- /tailwind
- /react
- /gleam
- /ocaml
- /elm
- /flutter
- /vscode
- /ash
- /html
- /opensuse
- /zig
- /centos
- /deepseek
- /php
- /scala
- /react-native
- /lisp
- /sublime-text
- /textmate
- /nixos
- /debian
- /agda
- /django
- /kubuntu
- /deno
- /arch-linux
- /nodejs
- /ubuntu
- /revery
- /manjaro
- /spring
- /diversity
- /lua
- /julia
- /markdown
- /slackware
Devtalk Sponsors
Practical resources that improve the lives of professional developers.
We build trusted fault-tolerant systems that scale to billions of users.
Real-time error tracking, performance insights, and observability for devs.
Supporting innovation across the BEAM ecosystem.
We build reliable cloud platforms for business-critical systems.
Develop your skills with books, videos, and courses.
Catch errors, track performance, monitor hosts and more.
Enabling companies to succeed by building software people love.
Courses that move you from confusion to "Aha, now I get it!"