diff --git a/examples/01_parallel_mpo_sum_2d_hubbard_conserve_momentum.jl b/examples/01_parallel_mpo_sum_2d_hubbard_conserve_momentum.jl
index 21291e1..9a32178 100644
--- a/examples/01_parallel_mpo_sum_2d_hubbard_conserve_momentum.jl
+++ b/examples/01_parallel_mpo_sum_2d_hubbard_conserve_momentum.jl
@@ -19,18 +19,18 @@ Run with:
 ```julia
 # Sequential sum over MPOs.
 # Uses the default `Sum=SequentialSum`.
-main(; Nx=8, Ny=4, maxdim=1000);
-main(; Nx=8, Ny=4, maxdim=1000, threaded_blocksparse=true);
+main(; Nx=8, Ny=4, nsweeps=10, maxdim=1000);
+main(; Nx=8, Ny=4, nsweeps=10, maxdim=1000, threaded_blocksparse=true);
 
 # Threaded sum over MPOs.
-main(; Nx=8, Ny=4, maxdim=1000, Sum=ThreadedSum);
-main(; Nx=8, Ny=4, maxdim=1000, Sum=ThreadedSum, threaded_blocksparse=true);
+main(; Nx=8, Ny=4, nsweeps=10, maxdim=1000, Sum=ThreadedSum);
+main(; Nx=8, Ny=4, nsweeps=10, maxdim=1000, Sum=ThreadedSum, threaded_blocksparse=true);
 
 # Distributed sum over MPOs, where terms of the MPO
 # sum and their environments are stored, updated,
 # and applied remotely on a worker process.
-main(; Nx=8, Ny=4, maxdim=1000, Sum=DistributedSum);
-main(; Nx=8, Ny=4, maxdim=1000, Sum=DistributedSum, threaded_blocksparse=true);
+main(; Nx=8, Ny=4, nsweeps=10, maxdim=1000, Sum=DistributedSum);
+main(; Nx=8, Ny=4, nsweeps=10, maxdim=1000, Sum=DistributedSum, threaded_blocksparse=true);
 
 # Using write-to-disk.
 main(; Nx=8, Ny=4, maxdim=1000, Sum=DistributedSum, disk=true, threaded_blocksparse=true);
@@ -41,6 +41,7 @@ function main(;
   Ny::Int,
   U::Float64=4.0,
   t::Float64=1.0,
+  nsweeps=10,
   maxdim::Int=3000,
   conserve_ky=true,
   seed=1234,
@@ -58,7 +59,6 @@ function main(;
 
   N = Nx * Ny
 
-  nsweeps = 10
   max_maxdim = maxdim
   maxdim = min.([100, 200, 400, 800, 2000, 3000, max_maxdim], max_maxdim)
   cutoff = 1e-6
diff --git a/examples/02_mpi_mpo_sum_2d_hubbard_conserve_momentum.jl b/examples/02_mpi_mpo_sum_2d_hubbard_conserve_momentum.jl
index f5ac35f..f86efc1 100644
--- a/examples/02_mpi_mpo_sum_2d_hubbard_conserve_momentum.jl
+++ b/examples/02_mpi_mpo_sum_2d_hubbard_conserve_momentum.jl
@@ -12,11 +12,11 @@ ITensors.Strided.disable_threads()
 """
 Run at the command line with 4 processes:
 ```julia
-mpiexecjl -n 2 julia -t2 02_mpi_run.jl --Nx 8 --Ny 4 --maxdim 1000
+mpiexecjl -n 2 julia -t2 02_mpi_run.jl --Nx 8 --Ny 4 --nsweeps 10 --maxdim 1000
 
-mpiexecjl -n 2 julia -t2 02_mpi_run.jl --Nx 8 --Ny 4 --maxdim 1000 --threaded_blocksparse true
+mpiexecjl -n 2 julia -t2 02_mpi_run.jl --Nx 8 --Ny 4 --nsweeps 10 --maxdim 1000 --threaded_blocksparse true
 
-mpiexecjl -n 2 julia -t2 02_mpi_run.jl --Nx 8 --Ny 4 --maxdim 1000 --disk true --threaded_blocksparse true
+mpiexecjl -n 2 julia -t2 02_mpi_run.jl --Nx 8 --Ny 4 --nsweeps 10 --maxdim 1000 --disk true --threaded_blocksparse true
 ```
 """
 function main(;
@@ -24,6 +24,7 @@ function main(;
   Ny::Int,
   U::Float64=4.0,
   t::Float64=1.0,
+  nsweeps=10,
   maxdim::Int=3000,
   conserve_ky=true,
   seed=1234,
@@ -39,7 +40,6 @@ function main(;
 
   N = Nx * Ny
 
-  nsweeps = 10
   max_maxdim = maxdim
   maxdim = min.([100, 200, 400, 800, 2000, 3000, max_maxdim], max_maxdim)
   cutoff = 1e-6
diff --git a/examples/02_mpi_run.jl b/examples/02_mpi_run.jl
index 7a9e83e..55eb31e 100644
--- a/examples/02_mpi_run.jl
+++ b/examples/02_mpi_run.jl
@@ -2,7 +2,7 @@
 include("02_mpi_mpo_sum_2d_hubbard_conserve_momentum.jl")
 
 # Run with:
-# mpiexecjl -n 2 julia 02_mpi_run.jl --Nx 8 --Ny 4 --maxdim 1000
+# mpiexecjl -n 2 julia 02_mpi_run.jl --Nx 8 --Ny 4 --nsweeps 10 --maxdim 1000
 
 using ArgParse
 function parse_commandline()
@@ -16,6 +16,10 @@ function parse_commandline()
     help = "Cylinder width"
     arg_type = Int
     required = true
+    "--nsweeps"
+    help = "Number of sweeps"
+    arg_type = Int
+    required = true
     "--maxdim"
     help = "Maximum bond dimension"
     arg_type = Int
@@ -35,6 +39,7 @@ args = parse_commandline()
 main(;
   Nx=args["Nx"],
   Ny=args["Ny"],
+  nsweeps=args["nsweeps"],
   maxdim=args["maxdim"],
   disk=args["disk"],
   threaded_blocksparse=args["threaded_blocksparse"],
diff --git a/test/test_mpi_example.jl b/test/test_mpi_example.jl
index 8f8bf2e..6f74747 100644
--- a/test/test_mpi_example.jl
+++ b/test/test_mpi_example.jl
@@ -16,10 +16,11 @@ using Test
     nprocs = 2
     Nx = 8
     Ny = 4
+    nsweeps = 2
     maxdim = 20
     mpiexec() do exe  # MPI wrapper
       run(
-        `$exe -n $(nprocs) $(Base.julia_cmd()) --threads $(Threads.nthreads()) $(joinpath(examples_dir, example_file)) --Nx $(Nx) --Ny $(Ny) --maxdim $(maxdim) --disk $(disk) --threaded_blocksparse $(threaded_blocksparse)`,
+        `$exe -n $(nprocs) $(Base.julia_cmd()) --threads $(Threads.nthreads()) $(joinpath(examples_dir, example_file)) --Nx $(Nx) --Ny $(Ny) --nsweeps $(nsweeps) --maxdim $(maxdim) --disk $(disk) --threaded_blocksparse $(threaded_blocksparse)`,
       )
     end
   end
diff --git a/test/test_sequential_threaded_distributed_example.jl b/test/test_sequential_threaded_distributed_example.jl
index e444ad3..e6d556f 100644
--- a/test/test_sequential_threaded_distributed_example.jl
+++ b/test/test_sequential_threaded_distributed_example.jl
@@ -11,6 +11,7 @@ using Test
     include(joinpath(examples_dir, example_file))
     Nx = 8
     Ny = 4
+    nsweeps = 2
     maxdim = 20
     Sums = (SequentialSum, ThreadedSum, DistributedSum)
     @testset "Sum type $Sum, threaded block sparse $threaded_blocksparse, write-to-disk $disk" for Sum in
@@ -21,7 +22,7 @@ using Test
       println(
         "\nRunning parallel test with $(Sum), threaded block sparse $threaded_blocksparse, write-to-disk $disk",
       )
-      main(; Nx, Ny, maxdim, Sum, disk, threaded_blocksparse)
+      main(; Nx, Ny, nsweeps, maxdim, Sum, disk, threaded_blocksparse)
     end
   end
 end