Issues building and runnning

[Nitin-Pendekanti]

While running using command

g++ -std=c++11 main.cpp

I get

main.cpp:64:10: fatal error: mpi.h: No such file or directory
   64 | #include <mpi.h>
      |          ^~~~~~~
compilation terminated.

When typing make i get

CC -std=c++11 -g -O3 -xHost -fopenmp -DDONT_CREATE_DIAG_FILES -c -o main.o main.cpp
make: CC: Command not found
make: *** [Makefile:47: main.o] Error 127

[AshwinAmbal]

While doing the make, you can change CC to mpicc in the Makefile and it will work. You can also remove the -xHost command if it isn't available and that will fix it as well. Hope this helps.