[Python-talk] Profile results... Better pack?

[bruce.labitt at autoliv.com]

Hmm, ~14.7 sec per FFT cycle - not so good.

Client side: (python/numpy)

2.75 sec creating random data, slower than I thought
7.00 sec packing data
1.7 sec  sending data = very good > 700 Mibps

Server side: (C/C++/OpenMP)

1.72 sec unpack and move data to fft membuf
0.22 sec FFT !
0.36 sec data move so I can use OpenMP next step
0.23 sec mag square with OpenMP
0.08 sec FFTshift OpenMP
0.21 sec refilter, dBs, pack & send to client

I guess first order of business is to work on packing...

Is there a faster packer?  I need to generate a string that is the 
concatenation of:

1 16 bit number byte swapped + 1084200 doubles byte swapped

The byte swapping is to get into network order.

Can I use the module array?


Bruce Labitt
Autoliv Electronics
1011B Pawtucket Blvd, PO Box 1858
Lowell, MA  01853

Email: bruce.labitt at autoliv.com. 
Tel:  (978) 674-6526
Fax: (978) 674-6581 

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