[gmx-developers] Gromacs hardware

Erik Lindahl lindahl at sbc.su.se
Tue Apr 26 12:02:34 CEST 2005

Hi Brendan,

You're certainly more than welcome to try it - we just wanted to make  
sure you knew the current situation before putting a lot of work into  

In a way, the single-instruction-multiple-data instructions we use in  
the SSE and Altivec inner loop implementations are similar to DSP  
chips. At least the G4 (Altivec) is used pretty heavily for DSP  
applications too, IIRC.



On Apr 25, 2005, at 10:27 PM, Brendan Moran wrote:

> Brendan Moran wrote:
>>  The benefit is parallelism, and preprogramming.  The opteron is  
>> going to be doing a lot of pushing variables around, and that  
>> takes time.  An FPGA based processor might be able to handle that  
>> portion better, though it will never compare with the raw power  
>> available from a true CPU.
> I should point out that I never thought that the coprocessor would  
> be doing all the work.  It would just be a tool to operate the most  
> time consuming part of the gmx algorithm, as outlined by Erik
> --
> Brendan Moran
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