Dnia 2011-03-17 13:09 Andreas Kloeckner napisał(a):
On Tue, 15 Mar 2011 23:25:32 +0100, "=?UTF-8?B?VG9tYXN6IFJ5YmFr?="
> I attach patch containing code that is supposed to initialise Sobol32
> direction vectors.
> Initially I wanted to implement it myself based on article, but after
> looking at CUDA 4.0
> (and new functions that would also need to be reimplemented) I decided
> to call existing
> function in library.
> Few remarks about implementation:
> 1) I have added new option to configure.py and new configuration variable
> It might not be ideal for CURAND, but I am also thinking about additional
> libraries that are
> available in CUDA 4.0 in cudatoolssdk_4.0_linux_64.run.
> I believe that it might be possible to include CURAND in the PyCUDA core
> (and hence
> add dependency on libcurand), but I also believe that dependency on e.g.
> libcupti should be optional.
> In such case I would propose changing name from HAVE_LIBRARIES to
> and changing
> patch not to surround CURAND-related code with ifdefs.
> 2) I have added enum direction_vector_set; currently it has only one
> but it will have more
> in CUDA 4.0 - so please leave it as is.
> 3) Although there is ability to call function get_direction_vectors32 and
there is no code that joins those two. I am thinking whether this code
should be in C or in Python
- so for now please just apply patch to curand branch, and after I have
I will send it to the list.
4) Sorry - no documentation for C code yet.
Thanks for the patch!
A few comments/requests:
- Don't error out on 'import pycuda.curandom' if CURAND wasn't
found. The old MD5 RNG is still there and will work even if nothing
I have also changed definition of classes depending on CURAND so
now they are created only if proper CURAND version is present.
Same goes for have_libraries()--I'd prefer get_curand_version() in
[None, (3,2), ... ] etc.
Use (0, 0, 0) instead of None
- Make the HAVE_* options more fine-grained, i.e. HAVE_CURAND.
- Compile a separate shared library for every extension. _driver.so is
called that because it's supposed to contain the wrapper for the
driver interface, and nothing else.
My suggestion would be _curand.so. (Just add another Extension object
All done - attaching patch for analysis.