Re: Cryogenic: Enabling Power-Aware Applications on Linux

2014-04-12 Thread H. Peter Anvin
On 04/12/2014 04:36 AM, Pavel Machek wrote: >> >>> Hmm, but the API needs redoing, anyway, fcntl()? >> >> Depends --- while I like the idea, I did not hear enough to be >> certain that having this feature embedded in such a non-modular >> way was already the consensus (and I do not see a reasonable

Re: Cryogenic: Enabling Power-Aware Applications on Linux

2014-04-12 Thread Pavel Machek
Hi! > >> Yes, it depends on the device, but we have demonstrated power > >> savings for two different types of devices using two different > >> measurement setups performed by two independent groups. Some > >> of the measurements are available on the website, the second > >> set should become ava

Re: Cryogenic: Enabling Power-Aware Applications on Linux

2014-04-11 Thread David Lang
On Sat, 12 Apr 2014, Christian Grothoff wrote: On 04/12/2014 12:05 AM, Pavel Machek wrote: Hi! Cryogenic is the result of my Master's Thesis, completed at the Technical University of Munich under the supervision of Christian Grothoff. You can find more information about Cryogenic at https:/

Re: Cryogenic: Enabling Power-Aware Applications on Linux

2014-04-11 Thread Christian Grothoff
On 04/12/2014 12:05 AM, Pavel Machek wrote: > Hi! > Cryogenic is the result of my Master's Thesis, completed at the Technical University of Munich under the supervision of Christian Grothoff. You can find more information about Cryogenic at https://gnunet.org/cryogenic >

Re: Cryogenic: Enabling Power-Aware Applications on Linux

2014-04-11 Thread Pavel Machek
Hi! > >> Cryogenic is the result of my Master's Thesis, completed at the Technical > >> University > >> of Munich under the supervision of Christian Grothoff. You can find more > >> information > >> about Cryogenic at https://gnunet.org/cryogenic > > > > Do you have any measurements how much po

Re: Cryogenic: Enabling Power-Aware Applications on Linux

2014-04-11 Thread Christian Grothoff
On 04/11/2014 12:19 PM, Pavel Machek wrote: > Hi! > >> Cryogenic is the result of my Master's Thesis, completed at the Technical >> University >> of Munich under the supervision of Christian Grothoff. You can find more >> information >> about Cryogenic at https://gnunet.org/cryogenic > > Do you

Re: Cryogenic: Enabling Power-Aware Applications on Linux

2014-04-11 Thread Pavel Machek
Hi! > Cryogenic is the result of my Master's Thesis, completed at the Technical > University > of Munich under the supervision of Christian Grothoff. You can find more > information > about Cryogenic at https://gnunet.org/cryogenic Do you have any measurements how much power it actually saves?

Re: Cryogenic: Enabling Power-Aware Applications on Linux

2014-03-20 Thread Joe Perches
On Thu, 2014-03-20 at 13:31 -0700, H. Peter Anvin wrote: > On 03/19/2014 08:55 AM, Alejandra Morales wrote: > > 1) Open the character device corresponding to the active interface that is > > sending > > the packets, which we need to know beforehand. > > 2) Within the main loop, and before the tran

Re: Cryogenic: Enabling Power-Aware Applications on Linux

2014-03-20 Thread H. Peter Anvin
On 03/19/2014 08:55 AM, Alejandra Morales wrote: > 1) Open the character device corresponding to the active interface that is > sending > the packets, which we need to know beforehand. > 2) Within the main loop, and before the transmission, calculate the delay and > the > timeout and pass it to C

Cryogenic: Enabling Power-Aware Applications on Linux

2014-03-19 Thread Alejandra Morales
Dear all, Cryogenic is a Linux kernel module that allows to reduce energy consumption by means of enabling cooperative clustering of I/O operations among the various applications that make use of the same hardware device. In order to achieve this target, Cryogenic provides an API that enables appl