Fix

Author: DilumAluthge

src/slurmmanager.jl

@@ -212,11 +212,11 @@ function Distributed.launch(manager::SlurmManager, params::Dict, instances_arr::
         exehome = params[:dir]
         exename = params[:exename]
         exeflags = params[:exeflags]
-        custom_worker_flag = params[:custom_worker_flag]
-
-        _srun_cmd_without_env = `srun -D $exehome $exename $exeflags $custom_worker_flag`
 
         @static if Base.VERSION >= v"1.6.0"
+          custom_worker_flag = params[:custom_worker_flag]
+          _srun_cmd_without_env = `srun -D $exehome $exename $exeflags $custom_worker_flag`
+
           # Pass the key-value pairs from `params[:env]` to the `srun` command:
           env2 = _new_environment_additions(Dict{String,String}(params[:env]))
           srun_cmd_with_env = addenv(_srun_cmd_without_env, env2)
@@ -225,7 +225,11 @@ function Distributed.launch(manager::SlurmManager, params::Dict, instances_arr::
           if haskey(params, :env)
             @warn "SlurmClusterManager.jl does not support params[:env] on Julia 1.5 and earlier" Base.VERSION
           end
-          srun_cmd_with_env = _srun_cmd_without_env
+          if haskey(params, :custom_worker_flag)
+            @warn "SlurmClusterManager.jl does not support params[:custom_worker_flag] on Julia 1.5 and earlier" Base.VERSION
+          end
+
+          srun_cmd_with_env = `srun -D $exehome $exename $exeflags --worker`
         end
 
         # Pass cookie as stdin to srun; srun forwards stdin to process