demandCPU.c File Reference

Functions
int	main (int argc, char *argv[])
	a dummy program to increase the load on a CPU. More...

Function Documentation

main()

int main	(	int	argc,
		char *	argv[]
	)

a dummy program to increase the load on a CPU.

The main intend is to compile the ATLAS library on Intel CPU where the usual cpupower frequency-set -g performance does not avoid throttling the CPU's, such that the usual rpmbuild of the ATLAS library refuses to start compilation. If we load all cores with a dummy program like this one here, we can configure the compile-installation

of the ATLAS library with 'configure –cripple-atlas-performance..' and still

get a reliable performance tuning.

Usage: make demandCPU ./demandCPU & ./demandCPU & ./demandCPU & ./demandCPU & ./demandCPU & ./demandCPU &

make/install ATLAS here as detailed in LN-MPIA-MAN-ICS-010

pkill demandCPU

Since

2017-09-07

Author

R. J. Mathar