Ubuntu 20 : 

Installing Cilk in your home directory

1. Download cilk-5.4.6.tar.gz 
	from http://jatinga.iitg.ernet.in/~asahu/cs431/cilk-5.4.6.tar.gz
2. unzip in your home 
	$ tar -xvzf cilk-5.4.6.tar.gz 

3. Issue these following command to configure and Make

	$./configure --prefix=$HOME/cilk-5.4.6/ CFLAGS="-D_XOPEN_SOURCE=600 -D_POSIX_C_SOURCE=200809L -D_Float128=double -fgnu89-inline"
	$make; make install

4. Run example matmul.cilk and make file is given.
	http://jatinga.iitg.ernet.in/~asahu/cs431/cilkmatmultest/

5. test matmul progam
	$ cd cilkmatmultest
	$ make
    runninhg cilk matmulprogram for size 30 on 16 thread
	$ ./matmul -nproc 16 30