Fix SSS population padding

D2Q9 and D3Q27 worked by coincidence, should now work for all lattices.

2 files changed, 2 insertions, 2 deletions

diff --git a/lid_driven_cavity/cpp/config.py b/lid_driven_cavity/cpp/config.py
index 0ea626b..63386f6 100644
--- a/lid_driven_cavity/cpp/config.py
+++ b/lid_driven_cavity/cpp/config.py
@@ -8,7 +8,7 @@ precision  = 'double'
 streaming  = 'SSS'
 
 ## 3D LDC
-#descriptor = D3Q27
+#descriptor = D3Q19
 #geometry   = Geometry(64, 64, 64)
 #tau        = 0.6
 #precision  = 'double'
diff --git a/lid_driven_cavity/cpp/ldc.cpp.SSS.mako b/lid_driven_cavity/cpp/ldc.cpp.SSS.mako
index ed2f938..eb041e5 100644
--- a/lid_driven_cavity/cpp/ldc.cpp.SSS.mako
+++ b/lid_driven_cavity/cpp/ldc.cpp.SSS.mako
@@ -98,7 +98,7 @@ padding = (max(geometry.size_x,geometry.size_y,geometry.size_z)+1)**(descriptor.
     ${float_type}* f[${descriptor.q}];
 
 % for i, c_i in enumerate(descriptor.c):
-    f[${i}]  = f_aa.get() + ${layout.pop_offset(i) + padding};
+    f[${i}]  = f_aa.get() + ${padding + layout.pop_offset(i, 2*padding)};
 % endfor
 
     std::vector<std::size_t> ghost;