Makefile was fixed. Smaller problem size is defined in config.txt for laminar flow case.

Author: Kairzhan

examples/laminar/config.txt

@@ -1,13 +1,13 @@
 #####################
 case=channel
 
-xwidth=128
-ywidth=128
-zwidth=128
+xwidth=64
+ywidth=32
+zwidth=32
 
-nx=128
-ny=128
-nz=128
+nx=64
+ny=32
+nz=32
 
 restart=0
 nrestart=0
@@ -31,7 +31,7 @@ visc=0.166
 
 ambient_fx=0.0
 ambient_fy=0.0
-ambient_fz=8.10546875e-06
+ambient_fz=3.2421875e-5
 
 periods_x=0
 periods_y=1

examples/laminar/velprof.plt

@@ -10,9 +10,9 @@ set key top left font ",16"
 
 u0=0.1
 visc=0.166
-L=128
+L=64
 F=8.10546875e-06
-nx=128
+nx=64
 dx=L/nx
 
 set xrange [0:1]

src/Makefile

@@ -2,8 +2,8 @@
 CC=mpic++
 
 # host cpu architecture
-CPU_ARCH=zen3
-#CPU_ARCH=native
+#CPU_ARCH=zen3
+CPU_ARCH=native
 
 # uncomment PREC4 for single precision
 CFLAGS=-O3 --c++20 -tp=${CPU_ARCH} -gpu=ptxinfo -g -Wall -Wno-unused-parameter -Minfo #-DPREC4=1

src/numerics.h

@@ -1,6 +1,8 @@
 #ifndef NUMERICS_H_
 #define NUMERICS_H_
 
+#include <string>
+
 #include "precision.h"
 
 namespace Numerics {