Re: Energy consumption of XL216-series
Posted: Fri Feb 10, 2017 11:45 am
Hi Chris,
Yes - you should set the clock speed of the switch lower - it will help.
Transfer rate through the switch is linear in the clock speed.
The tile-to-tile limit is ClockSpeed x 4 bytes per second.
So the default speed is 500 x 4 = 2 Gbytes per second. Not many applications need that, and you can for example reduce it by a factor of 10 to 200 Mbytes per second, and reduce the power consumption significantly. Alternatively, you can speed the clock up when you need it and slow it down a factor 100 when you don't need it.
This is only for tile-to-tile communication; it does not affect communication between "logical" cores.
Cheers,
Henk
Yes - you should set the clock speed of the switch lower - it will help.
Transfer rate through the switch is linear in the clock speed.
The tile-to-tile limit is ClockSpeed x 4 bytes per second.
So the default speed is 500 x 4 = 2 Gbytes per second. Not many applications need that, and you can for example reduce it by a factor of 10 to 200 Mbytes per second, and reduce the power consumption significantly. Alternatively, you can speed the clock up when you need it and slow it down a factor 100 when you don't need it.
This is only for tile-to-tile communication; it does not affect communication between "logical" cores.
Cheers,
Henk