elodw <a...@pdauf.de> writes:
> with
>
> import pycuda.gpuarray as gpuarray
> import pycuda.driver as drv
> import pycuda.autoinit
> import numpy
> import sys
>
> from pycuda.tools import mark_cuda_test
> from pycuda.characterize import has_double_support
>
> from pycuda.compiler import SourceModule
> .....
> ....
> zzz=gpuarray.sum(pow(yyy-xxx,2)) -------Error statement
> ....
> ....
>
> i get the following error message:
>
> Traceback (most recent call last):
> File "/home/brust/PyCUDA/matmul17.py", line 36, in <module>
> zzz=gpuarray.sum(pow(yyy-xxx,2))
> File "/usr/lib/python2.7/dist-packages/pycuda/gpuarray.py", line 623,
> in __pow__
> func = elementwise.get_pow_kernel(self.dtype)
> File "<string>", line 2, in get_pow_kernel
> File "/usr/lib/python2.7/dist-packages/pycuda/tools.py", line 404, in
> context_dependent_memoize
> result = func(*args)
> File "/usr/lib/python2.7/dist-packages/pycuda/elementwise.py", line
> 549, in get_pow_kernel
> "pow_method")
> File "/usr/lib/python2.7/dist-packages/pycuda/elementwise.py", line
> 165, in get_elwise_kernel
> arguments, operation, name, keep, options, **kwargs)
> File "/usr/lib/python2.7/dist-packages/pycuda/elementwise.py", line
> 151, in get_elwise_kernel_and_types
> keep, options, **kwargs)
> File "/usr/lib/python2.7/dist-packages/pycuda/elementwise.py", line
> 75, in get_elwise_module
> options=options, keep=keep)
> File "/usr/lib/python2.7/dist-packages/pycuda/compiler.py", line 262,
> in __init__
> arch, code, cache_dir, include_dirs)
> File "/usr/lib/python2.7/dist-packages/pycuda/compiler.py", line 252,
> in compile
> return compile_plain(source, options, keep, nvcc, cache_dir)
> File "/usr/lib/python2.7/dist-packages/pycuda/compiler.py", line 134,
> in compile_plain
> cmdline, stdout=stdout.decode("utf-8"), stderr=stderr.decode("utf-8"))
> pycuda.driver.CompileError: nvcc compilation of /tmp/tmpKjK3Px/kernel.cu
> failed
> [command: nvcc --cubin -arch sm_20
> -I/usr/lib/python2.7/dist-packages/pycuda/cuda kernel.cu]
> [stderr:
> /usr/lib/python2.7/dist-packages/pycuda/cuda/pycuda-complex.hpp(553):
> warning: a __host__ function("pycuda::complex<float>::complex")
> redeclared with __device__, hence treated as a __host__ __device__ function
>
> kernel.cu(19): error: calling a __host__ function("std::pow<long, long>
> ") from a __global__ function("pow_method") is not allowed
>
> 1 error detected in the compilation of
> "/tmp/tmpxft_00000c21_00000000-6_kernel.cpp1.ii".
> ]
>
>
>
> zzz=gpuarray.sum((yyy-xxx)*(yyy-xxx))
>
> works well.The issue is that you're passing integers. Cast to floating point before you call the function. > And another question: > > Is there a sqrt-Function? http://documen.tician.de/pycuda/array.html#pycuda.cumath.sqrt Andreas
pgpimLx7Hchbb.pgp
Description: PGP signature
_______________________________________________ PyCUDA mailing list PyCUDA@tiker.net http://lists.tiker.net/listinfo/pycuda
