Answer: close the program and reopen it.
Explanation: This is one of the 5 common problems in a computer. When a program wont load, Try closing and reopening the program.
Reboot the computer.
Check for known issues on the web or updates to the software.
Use Task Manager (Ctrl+Alt+DEL) if program is non-responsive to "end task."
You will need one head node, at least a dozen identical compute nodes, an Ethernet switch, a power distribution unit, and a rack. Determine the electrical demand, cooling and space required. Also decide on what IP address you want for your private networks, what to name the nodes, what software packages you want installed, and what technology you want to provide the parallel computing capabilities
Required: program to return the largest of three numbers.
pseudocode
input parameters, int A,B,C;
int T; // temporary storage
if (A>B) T=A;
else T=B;
if (T>C) print(T);
else print(C);