try to fix ci...

.github/workflows/julia-tests.yaml

@@ -2,8 +2,6 @@
 # Julia Tests
 
 name: Correctness - Julia
-env:
- JULIA_NUM_THREADS: 2
 on:
  push:
  branches: ['main']
@@ -12,6 +10,8 @@ on:
 
 jobs:
  test:
+ env:
+ JULIA_NUM_THREADS: 2
  runs-on: ubuntu-latest
  steps:
  - uses: actions/checkout@v2

src/SimulationService.jl

@@ -71,7 +71,6 @@ end
 
 #-----------------------------------------------------------------------------# start!
 function start!(; host=SIMSERVICE_HOST, port=SIMSERVICE_PORT, kw...)
- Threads.nthreads() > 1 || error("Server require `Thread.nthreads() > 1`. Start Julia via `julia --threads=auto`.")
  SIMSERVICE_ENABLE_TDS || @warn "TDS is disabled. Some features will not work."
  stop!() # Stop server if it's already running
  server_url[] = "http://$host:$port"
@@ -91,7 +90,12 @@ function start!(; host=SIMSERVICE_HOST, port=SIMSERVICE_PORT, kw...)
  # Oxygen.mergeschema(swagger)
 
  # server:
- Oxygen.serveparallel(; host, port, async=true, kw...)
+ if Threads.nthreads() > 1 # true in production
+ Oxygen.serveparallel(; host, port, async=true, kw...)
+ else
+ @warn "Server starting single-threaded. This should only be used for testing. Try starting Julia via `julia --threads=auto`."
+ Oxygen.serve(; host, port, async=true, kw...)
+ end
 end
 
 #-----------------------------------------------------------------------------# stop!