[PyCUDA] a beginner wants help

[elodw]

Hello,

i want to start with pycuda and had a very beginner question:

ok, the header lines are clear,
same to_gpu statement and the get statement,
thats it.

What is the problem defined in Python:

a=array[1000,100]

for i in range(1000-1):
for j in range(i+1,1000):
calculate euclidean difference between a[i] and a[j]

can i do this without using an extra kernel
if i need a kernel how looks it

thanks in advance
Ernst

[Andreas Kloeckner]

Dear Ernst,

Post by elodw
ok, the header lines are clear,
same to_gpu statement and the get statement,
thats it.
a=array[1000,100]
calculate euclidean difference between a[i] and a[j]
can i do this without using an extra kernel
if i need a kernel how looks it

I'm afraid, PyCUDA's arrays are not currently smart enough to do this,
so you'll need to write your own kernel. I unfortunately can't write
that for you, but you should be able to take a look at the CUDA docs and
give it a shot.

Hope that helps,
Andreas
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[elodw]

Thank You very much Andreas,

Your hint helps me very much.
I know now, where i have to go on
and where not.

Ernst

Post by Andreas Kloeckner
Dear Ernst,

Post by elodw
ok, the header lines are clear,
same to_gpu statement and the get statement,
thats it.
a=array[1000,100]
calculate euclidean difference between a[i] and a[j]
can i do this without using an extra kernel
if i need a kernel how looks it

I'm afraid, PyCUDA's arrays are not currently smart enough to do this,
so you'll need to write your own kernel. I unfortunately can't write
that for you, but you should be able to take a look at the CUDA docs and
give it a shot.
Hope that helps,
Andreas