Sunday, February 10, 2008

Testing the Network Speed: The netcat way

Testing your core network speed is essential to describe possible bottlenecks.

Here is practical way to do this;

nc is a golden linux tool which stands for netcat.
On the receiver side;
# nc -l -p6666 > /dev/null is the listened IP address.

On the transmitter side;
# dd if=/dev/zero bs=1024k count=1024 | nc 6666

At the end of pumping of the zeros "dd" shows total used time and bw/s values.
If not, you can use the "time" command before the dd to do this.

Intel stretches HPC dev tools across chubby clusters

SC11 Supercomputing hardware and software vendors are getting impatient for the SC11 supercomputing conference in Seattle, which kick...