From fbfb8d6cb817377443307339b08cde56eedb7a71 Mon Sep 17 00:00:00 2001
From: Katharine Hyatt <kslimes@gmail.com>
Date: Tue, 20 Oct 2026 14:02:42 +0200
Subject: [PATCH] use tforeach in vomps

---
 src/algorithms/approximate/vomps.jl | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/src/algorithms/approximate/vomps.jl b/src/algorithms/approximate/vomps.jl
index 361c846cc..adb84f6f0 100644
--- a/src/algorithms/approximate/vomps.jl
+++ b/src/algorithms/approximate/vomps.jl
@@ -114,8 +114,8 @@ function localupdate_step!(
     allocator = default_allocator(state.mps, scheduler)
     tforeach(eachsite(state.mps); scheduler) do site
         local AC, C
-        @sync begin
-            Threads.@spawn begin
+        tforeach(1:2; scheduler) do half
+            if isone(half)
                 AC = map(1:size(state.mps, 1)) do row
                     AC_projection(
                         CartesianIndex(row, site), state.mps, state.operator, state.envs;
@@ -123,8 +123,7 @@ function localupdate_step!(
                     )
                 end
                 circshift!(AC, 1)
-            end
-            Threads.@spawn begin
+            else
                 C = map(1:size(state.mps, 1)) do row
                     C_projection(
                         CartesianIndex(row, site), state.mps, state.operator, state.envs;