[Numpy-discussion] Accelerate your Python code with parallel processing

Matthieu Brucher matthieu.brucher@gmail....
Fri Jun 29 12:46:19 CDT 2007


Hi,

Is there a comparison with parallel libraries that can be branched on numpy
like MKL ? (and IPP for random number ?)

Matthieu

2007/6/29, Ronnie Hoogerwerf <rhoogerwerf@interactivesupercomputing.com>:
>
> I am an Application Engineer at Interactive Supercomputing and we are
> rolling out a beta version of our Star-P product for Python. We are actively
> looking for computationally intensive Python application to port to Star-P.
> Star-P is a parallel application development platform that allows users to
> tap into the power and memory of supercomputers from the comfort of the
> favorite desktop applications, in this case Python.
>
>
> Star-P is capable of both fine-grained parallel computation and
> embarrassingly parallel computation. The fine-grained mode of our
> Star-P Python implementation has been modeled on the Python NumPy package -
> for example:
>
>
> x = starp.random.rand(20000,20000)
> y = starp.linalg.inv(x)
>
>
> instead of
>
>
> x = numpy.random.rand(20000,20000)
> y = numpy.linalg.inv(x)
>
>
> Where the first couple of lines are executed on the Star-P parallel server
> in full C/MPI mode and the last couple of lines are executed on the desktop
> using Python.
>
>
> The embarrassingly parallel mode is capable of executing
> any Python module, although input and output parameters are currently
> limited to NumPy arrays, scalars, and strings - for example:
>
>
> y = starp.ppeval(mymodule.dosomething,x)
>
>
> instead of
>
>
> for i in range(0,n):
>     y[:,:,i] = mymodule.dosomething(x[:,i])
>
>
> Where again in the former example the iterations are spread out over the
> available CPUs (note the abstraction - user need not worry regarding the
> number of CPUs) on the Star-P server using Python and in the latter the
> looping is doing in serial on the client using Python.
>
>
> We are looking for real Python application that you would be willing to
> share with us that  we can port to Star-P. We want to use this experience as
> a basis for further improvements and development of our Python client.
>
>
> Thanks,
> Ronnie
>
>
>
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>
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